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GEOLOGICTAI, SURVEY PROFESSmNAL f*APEm 1090
Historical Survey of

U.S. Seismograph Stations

By BARBARA B. POPPE

GEOLOGICAL SURVEY PROFESSIONAL PAPER 1096

A listing of seismograph stations, 

including information on operating 

organizations, instrumentation, 

and availability of seismograms

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON 1979
UNITED STATES DEPARTMENT OF THE INTERIOR 

CECIL D. ANDRUS, Secretary

GEOLOGICAL SURVEY 

H. William Menard, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office

Washington, D.C. 20402 

Stock Number 024-001 -03111 -6
CONTENTS

	Page

Abstract ................................ 1

Introduction .............................. 1

Explanation of Station Listings. .................... 2

Acknowledgments............................. 3

References ............................... 3

Glossary of Abbreviations. ....................... 3

Station Listings by State

Alabama. ............................... 5

Alaska ................................ 8

Arizona. ............................... 32

Arkansas ............................... 44

California .............................. 50

Colorado ............................... 101

Connecticut. ............................. 113

Delaware ............................... 117

District of Columbia ......................... 118

Florida. ............................... 121

Georgia. ............................... 123

Hawaii and the Pacific ........................ 126

Idaho. ................................ 135

Illinois ............................... 144

Indiana. ............................... 148

Iowa ................................. 150

Kansas ................................ 153

Kentucky ............................... 156

Louisiana. .............................. 160

Maine. ................................ 162

Maryland ............................... 166

Massachusetts. ............................ 168

Michigan ............................... 170

Minnesota. .............................. 172

Mississippi. ............................. 175

Missouri ............................... 178

Montana. ............................... 183

Nebraska ............................... 194

Nevada ................................ 196

New Hampshire. ............................ 211

New Jersey .............................. 215

New Mexico .............................. 217

New York ............................... 225

North Carolina ............................ 242

North Dakota ............................. 245

Ohio ................................. 246

Oklahoma ............................... 251

Oregon ................................ 257

Panama Canal Zone. .......................... 266

Pennsylvania ............................. 267

Puerto Rico. ............................. 277

Rhode Island ............................. 282

South Carolina ............................ 283

South Dakota ............................. 288

Tennessee. .............................. 292

Texas. ................................ 299

Utah ................................. 313

Vermont. ............................... 322

Virgin Islands ............................ 324

Virginia ............................... 325

Washington .............................. 333

West Virginia. ............................ 345

Wisconsin. .............................. 347

Wyoming. ............................... 351

APPENDIXES

Appendix 1. Organizations operating in more than one state. ...... 361

2. Response curves ...................... 363

3. Alphabetic listing of station codes ............ 367

4. Regional maps of stations ................. 383

III

HISTORICAL SURVEY OF U.S. SEISMOGRAPH STATIONS

By Barbara B. Poppe

ABSTRACT

Although catalogs of seismograph stations 

have been compiled in the past, there has been 

no comprehensive modern record of the nearly 

1500 stations in the United States. This survey 

contains the vital information about the stations: who runs them, where they are, what 

instruments are used, and where the records are 

kept. For historical interest, information 

about closed stations that can no longer contribute records to the seismological community is 

nevertheless included. This survey will be 

useful for detailed study only in the few years 

after its release, because the data are constantly in flux. However, significant operators 

and stations do remain the same, and this information should make station research easier in 

the next decades.

INTRODUCTION

This publication is a compilation of detailed information about seismograph stations in 

the United States, the trust territories, Panama, and the Commonwealth of Puerto Rico current 

to June 1977. Its principal purpose is to 

provide information on availability of records. 

Stations no longer offering data are included if 

specifics about them were available; all information that was available was included, even if 

incomplete. Not listed are stations about which 

no information existed beyond a simple reference.

The majority of the information contained 

in this catalog was obtained from questionnaires 

sent to each station operator. Much updating 

and completing of these files was carried on by 

telephone. The U.S. Geological Survey and Coast 

and Geodetic Survey (NOAA) files that extend 

back to the 1930's were helpful in finding 

information on older stations. References that 

were of invaluable help are listed at the end of 

this publication.

The data are presented alphabetically by 

state and then by the operating institution. In 

the upper right-hand corner of each page is the 

State name and the city in which the operating 

organization is located. Pages are arranged 

alphabetically, first by in-State addresses and 

then by out-of-State addresses. Although most 

networks are confined to one State, those networks that overlap more than one have been split 

so that the address of the network operator is 

listed in each State with tho'se stations of the 

network that are in that State. A listing of 

the states in which each organization operates 

stations is included in Appendix 1.

Appendix 2 contains response curves for 11 

instrument systems that are broadly used. Each 

curve is typical of a particular seismometer 

response, plotted as period vs. relative magnification. Each is normalized to T . Appendix 3 

is a cross-reference of stations in alphabetic 

order, and includes station name, state, operating organization, and page reference. The 

stations coded by NEIS (National Earthquake 

Information Service) are plotted on region maps 

in Appendix 4.

A critical point of confusion might arise 

in the use of station codes. The NEIS maintains 

a list of internationally recognized codes, 

which must not be confused with codes that have 

local validity but conflict with the established, assigned codes. Therefore, all assigned 

codes are written with no parentheses. Any 

station that has never contributed data to the 

NEIS and has consequently never had a code 

assigned by the NEIS has its local code listed 

within parentheses. Also in parentheses are 

codes of stations that have been properly registered and reserved but have not yet submitted 

data to the NEIS. All codes in parentheses are 

nonetheless included because they are valuable 

to anyone wanting to obtain data from a particular station or read published station reports. 

In some cases both an assigned code and one used 

by the operating organization exists. When this 

duplication occurs, both codes are listed, the 

second being in parentheses.

1
EXPLANATION OF STATION LISTINGS

General information.--Every effort was made 

to discern the individual or organization involved with each station. Stations and networks 

are listed under the operating organization, so 

that contact can be made directly with that 

organization for current information and answers 

to any questions. The records generally are 

available from the station, except where the 

data are transferred to a data center. The 

National Geophysical and Solar-Terrestrial Data 

Center in Boulder, Colo., is equipped to respond 

to data requests by supplying copies of the 

records kept on file; the originals usually 

reside at the station.

The address and telephone number listed in 

most cases refer to the operating organization's 

central location; sometimes this is the address 

of a station. The different offices of the USGS 

are treated as separate organizations because 

the responsibility is distinctly segregated. 

The Telex number is listed when applicable.

Site information.--"Code" is the three- or 

four-letter code assigned, either by NEIS or the 

operator at each location. (The codes does not 

change in the event of a change in instrumentation or controlling organization; however, a 

location change of more than 1 km necessitates a 

new code.) As mentioned above, any code not 

assigned by NEIS will be in parentheses; if both 

assigned and local codes exist, they will both 

be listed. The station name is generally the 

town closest to the station. Latitude and 

longitude are listed in degrees and decimal 

degrees. The four decimal places give the 

significance of minutes and seconds, but are not 

always truly significant to that level. Conversion to the four decimals was made from whatever 

form was supplied by the stations. "Elevation" 

generally is the elevation of the seismometer. 

Leaders (---) indicate no data. "Data opened" 

is the date that the site was occupied and 

started recording, regardless of which instrument system was involved or which organization 

was responsible. "Date closed" is the date 

recording ceased or when the instruments were 

removed. When no date, not even the year, could 

be found, the "Date closed" column is merely 

noted "Closed." Foundation and geologic age are 

listed whenever this information was available. 

The information listed under foundation ranges 

from formation and series names to generic 

descriptions.

Instrumentation.--Following the code, which 

is listed again in the instrumentation section, 

are type (make or design) of seismometer and, if 

listed, the model number. Most of the types 

listed are conventional enough to be readily 

identified. However, some makes may not be 

familiar; if further information is desired, it 

should be requested from the operating organization.

"Seismometer component" is most generally 

listed as Z for vertical, NS for horizontal in a 

north-south direction, and EW for horizontal in 

an east-west direction. Conventionally, first 

motion is N and E on horizontal instruments, and 

thus, when written as NS and EW, the first 

letters imply a first-motion direction. When 

the reverse orientation is known, the component 

is listed as SN or WE. Unfortunately, the more 

conventional listing cannot imply absolutely 

that the convention for first motion is followed. No mention is made of polarity changes 

that have occurred during a station's operation. 

Orientations other than these are listed with 

their compass orientation. If the only information known is that there was a horizontal instrument, it is listed simply as horizontal.

"Seismometer T " is the free period of the 

seismometer, listed in seconds. "Galvo Tg" is 

the period of the galvanometer. For instrument 

systems that do not use a galvanometer, the 

filter characteristics are given, either in 

seconds or, where noted, in hertz (Hz).

"Type recording" refers to the mode of 

recording (Helicorder, Develocorder) or the type 

of records (film, smoked paper).

Magnification of the record is measured at 

the free period of the seismometer (T ) unless 

noted under "Remarks" as measured at another 

period. Though the magnification can often 

change, the stated magnifications refer to the 

most common settings used for a system. High 

noise level requires lower magnification; low 

noise level allows higher magnification.

Leaders imply no data available, or in the 

case of Galvo Tg may indicate that a solid-state 

amplifier with a filter is used instead of a 

galvanometer.

Listed under remarks is a variety of data 

about the particular station's instrumentation. 

A station recorded off-site is noted as telemetered to another station or location. Newer 

communications systems, however, now enable 

various types of transmissions such as microwave, radio, and hard-wire; and these special 

systems are not delineated from telemetering. 

Particular standard-instrument networks such as 

WWSSN (World-Wide Standard Seismograph Network) 

and SRO (Seismic Research Observatory) are 

noted.

"Timing system" refers to the clock used 

and how or if drift is checked. Virtually all 

currently operating stations now use the National Bureau of Standards broadcast WWV to check 

times, or WWVB to record directly on the records. In some cases the accuracy may be noted. 

The NEIS generally requires accuracy to a tenth 

of a second.
System response curves are presented in 

Appendix 2. The curves were prepared from those 

sent by the station. Because the electronics of 

a system can be easily changed, these curves may 

not reflect the characteristics of a system at 

any future time.

Short history.--Information about the station's origin, development, or role in particular research is listed. This history is 

occasionally quite detailed, but may be only 

anecdotal. Some information about station 

reports and records may also be included under 

history. If no information was available for a 

history, this heading was omitted.

ACKNOWLEDGMENTS

I am indebted to several individuals for 

their help during various phases leading to the 

publication of this volume. Much of the initial 

data gathering was done by Pamela A. Covington; 

without her constructive beginnings, I would 

never have completed this project. Carl W. 

Stover contributed the computer plots of stations and, along with John S. Derr, provided 

invaluable support and suggestions. Debbie A. 

John, Paula K. Smith, Kathleen Gentille, and Jan 

M. Nevin assisted in the volumes of compilation 

and cross-checking inherent in this type of 

work. Helen E. Hodgson maintained unflagging 

interest in the editorial form of this publication, and I am most appreciative of her efforts.

Additionally, several individual station 

operators spend generous amounts of time with me 

clarifying information about their own stations, 

as well as about other local stations, and this 

assistance was greatly appreciated.

REFERENCES CITED

University of Michigan Institute of Science and 

Technology, 1965, Handbook World-Wide 

Standard Seismograph Network: Ann Arbor, 

unpaged.

£harlier, Ch. and van Gils, J. M. , 1953, Liste 

des stations seismologiques mondiales: 

Brussels, Observatoire Royal de'Belgique, 

unpaged.

Covington, P. A. , 1974, Seismograph station 

abbreviations and coordinates: U.S. Geological Survey National Earthquake Information Service, MS 967, Box 25046, Denver 

Federal Center, Denver, CO 80225, 72 p.

McComb, H. E. , and West, C. J. , 1931, List of 

seimological stations of the world, 2d ed.: 

Nat'1. Research Council Bull., 119 p.

Wood, H. 0., 1942, A chronological conspectus of 

seismologic stations: Seismol. Soc. America Bull., v. 32, no. 2, p. 97-159.

GLOSSARY OF ABBREVIATIONS

AFTAC Air Force Technical Applications Center.

ARPA Advance Research Projects Agency.

CIRES Cooperative Institute for Research in 

Environmental Science, University of 

Colorado.

C.I.T. California Institute of Technology. 

Do., do Ditto.

HGLP High-Gain Long-Period standard instruments developed at Lamont-Doherty 

Geological Observatory and currently 

maintained by the USGS.

Hz Hertz (cycles per second).

IGY International Geophysical Year.

IQSY International Year of the Quiet Sun.

IRIG-C A format for time signals, represented 

in binary-coded decimal (BCD).

K Thousand. (Magnification of 10 K is 

the same as 10,000.)

LASA Large-Aperture Seismic Array.

LRSM Long-Range Seismic Measurement an 

AFTAC project.

M.I.T. Massachusetts Institute of Technology.

NEIS National Earthquake Information Service .

NOAA National Oceanic and Atmospheric Administration.

sec Second (unit of time).

SRO Seismic Research Observatory standard 

USGS instruments.

USC&GS U.S. Coast and Geodetic Survey.

Many stations and projects run under 

the USC&GS were eventually transferred 

within the U.S. Department of Commerce 

and finally to the U.S. Department of 

the Interior, as follows:

USC&GS (U.S. 

Department of 

Commerce) to July 1965
USC&GS--Continued USGS

Enviromental 

Science Services 

Administration 

(part of the 

USC&GS)

National Ocean 

Survey (within 

NOAA)

Environmental 

Research Laboratories (within 

NOAA)

USGS (U.S. 

Department of 

the Interior)

July 1965-October 

1970

October 1970-July 

1971

July 1971-September 1973

September 1973- 

present

VELAUniform

WWSSN

WWV and 

WWVB

The NETS is an example of an office 

that evolved through this system, previously being called the National 

Earthquake Information Center in the 

U.S. Department of Commerce.

U.S. Geological Survey. 

Prior to 1973 the USGS was doing 

seismic research primarily in the 

National Center for Earthquake Research (NCER) at Menlo Park, Calif. 

NCER and NE1S, as well as research 

branches from both Departments, 

merged to form the Office of Earthquake Studies.

A project funded by ARPA under which 

several seismic monitoring projects 

(LRSM, TFO, CPO, etc.) were conducted.

World-Wide Standardized Seismograph 

Network standard instruments developed by the USC&GS and currently 

maintained by the USGS.

Call letters of radio stations of the 

National Bureau of Standards that 

continually broadcast time signals. 

They broadcast at different frequencies and WWVB also includes a time 

code consistent with Coordinated 

Universal Time that can be recorded 

directly on magnetic tape.

Use of brand names in this report Is for descriptive purposes only 

and does not constitute endorsement by the U.S. Geological Survey
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Spring Hill College

Seismic Observatory 

Spring Hill College 

Mobile, AL 36608

205-460-2315

Address to obtain records:

Prior to 1952:

None available. 

Pen and ink, since 1952:

Spring Hill College 

Mobile, AL 36608

SITE INFORMATION

ALABAMA 

Mobile, AL

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code _. . . Latitude Station name ,, _, .. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

SHA Spring Hill College——— 30.6944 88.1428 61 12/1910 Open-- Unconsolidated clayey sand.

INSTRUMENTATION

Seismometer

Code

SHA

Type

Benioff 1051 — — — ——

Benioff 1101 ———————

—do —— —— —— —— — ——

Eisele AC transducerComponent

Z 

NS.EW 

Z

NS.EW 

Z,NS,EW

Tjsec)

1.0 

1.0 

15.0

15.0 

15.0

Galvo 

Tg (sec)

0.76 

.74 

100

100

Type Magnification 

recording at T

Photo paper

--do — ———

--do ----- ——

--do ———— ———

Pen and ink

6. 

6. 

1.

5

25 K 

25 K 

5 K

75 K 

K

Remarks

WWSSN. 

Do. 

WWSSN. Magnification at 

30 sec. 

Do. 

Nonstandard instruments.

Timing system: WWSSN standard used for all instruments at this station. 

System response curves: See figure 1, p. 363. 

SHORT HISTORY

The Spring Hill College Seismic Observatory began operations in December 1910 with the installation of a Wiechert horizontal 

instrument. This instrument was operated continuously until 1935, with the exception of 1926. The observatory reopened in 1939 

with a Wood-Anderson and, later, acquired a pair of McComb-Rombergs. These latter instruments and the Wiechert were continuously 

operated from 1941 until 1952, with the exception of the academic year 1947-48. In 1952, with the invention of a novel pick-up 

and recording system, three new seismometers were constructed—vertical and horizontals. These pen-and-ink units replaced all the 

previous instruments. After an initial installation in March 1962, WWSSN equipment was relocated in a new thermally insulated 

structure in June 1963.
ALABAMA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

r . „ . Latitude Longitude Elev Date Code Station name /-j »T \ /-j t , \ /• •> j (deg N.) (deg W.) (meters) opened

(AX2AL) --do ————————— -

(BO-AL) Brewton —————— -

(EU-AL) Eutaw ———————— -

(EU2AL) —do ————————— -

. ————— 32.8356 86.1764 183 12/03/65

. ————— 32.7772 86.1300 183 3/24/66 

1/19/68

. ————— 31.1697 86.8597 76 12/02/65

. ————— 32.7964 87.8847 43 11/12/66 

8/27/69

Date 

. , Foundation; geologic age

12/13/65 Sand clay.

1/16/67 

1/19/68

12/13/65 

11/22/64

1/16/67 

11/10/69

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(AX2AL), (EU-AL),

(EU2AL): Benioff —————— Z,NS,EW 1.0

Sprengnether —— Z,NS,EW 20.0

(AX-AL), (AX2AL)

(2d oper.),

(BO-AL), (EU2AL)

(2d oper.): Geotech S-13 —— Z,NS,EW 1.0

Geotech —————— Z,NS,EW 20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape, (EU-AL): 70 K 

35-mm film.

-do——— .... ———

—— Magnetic tape (AX-AL): 180 K Portable system.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in I960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.
ALABAMA

Menlo Park, CA

GENERAL INFORMATION 

Operated by:

Address:

U.S. Geological Survey and 

Alabama Geological Survey

National Center for Earthquake Research 

U.S. Geological Survey 

345 Middlefield Road 

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2526 

Address to obtain records:

As above. 

SITE INFORMATION

Alabama Geological Survey 

P.O. Drawer "0" 

University of Alabama 

Tuscaloosa, AL 35486

205-349-2852

Code

(DLC) 

EMA 

FLT 

(HIT)

LCA 

(LOG)

(LDG) 

(PEA)

PTR 

(PET)

RHA 

(RHD)

(UOA)

Station name

Elm (South Holt) ------

UA! *-

Log Cabin (Lake Nichol — 

Rd.).

Pea Ridge (Pea Ridge —— - 

Rd.).

Reichold (East Holt) ———

University of Alabama —— 

(Fox) .

Latitude 

(deg N.)

33.2608 

33.2210 

33.2580 

33.2223 

33.3067

33.2905 

33.2553

33.2172 

33.2417 

33.2110

Longitude 

(deg W.)

87.4448 

87.4738 

87.4095 

87.5077 

87.4683

87.5350 

87.4943

87.4333 

87 . 4660 

87.5433

Elev Date 

(meters) opened

137 3/10/71 

92 1/09/71 

128 1/09/71 

95 1/09/71 

132 1/09/71

95 1/09/71 

107 1/09/71

122 1/09/71 

83 1/09/71 

67 1/09/71

, , Foundation; geologic age

Open — —— 

— do— 

— do— 

— do— 

— do—

— do— 

— do—

— do— 

— do— 

— do-­

INSTRUMENTATION

Seismometer

Code

All stat

Type Component To (sec)

1.0

Galvo

Tg (sec) re

Type Magnification Remarks 

cording at T

—— Develocorder —— Telemetered to University of Alabama.

Timing system: Not available.

System response curves: See figure 2, p. 363.

SHORT HISTORY

Ten stations were originally set up to monitor seismic activity near a deep disposal well.
ALASKA 

Adak, AK

GENERAL INFORMATION 

Operated by:

Address: 

Telephone:

National Oceanic and Atmospheric Administration 

National Weather Service

Adak Observatory, NOAA 

U.S. Naval Station, Box 51 

FPO Seattle, WA 97891

907-579-3250 or -3251

Address to obtain records:

Helicorder records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Develocorder records:

CIRES

University of Colorado

Boulder, CO 80302

SITE INFORMATION

Code

ADK

„. . . Latitude Longitude Elev Date Date _ , . . , Station name , , „ , ,•,,,•, , -, . T . Foundation; geologic age (degN.) (degW.) (meters) opened closed ' 6 6 *

Adak ——————————————— 51.8837 17(3.6844 116 1/66 Open-- Basalt, tuff breccia; Tertiary.

INSTRUMENTATION

Code

ADK 

Remote

Four

Seismometer

Type Component

M/N6480A.

Benioff 1051 —————— Z

Benioff 1101 —————— NS.EW

M/N6480A.

remote sites located 1.609 km north, south,

Galvo Type

T (sec) T (sec) recording

1.25 —— Helicorder 

1.0 —— Helicorder

Develocorder 

1.0 —— Helicorder 

Develocorder 

20.0 —— Helicorder

Develocorder 

1.0 .2 Develocorder

1.25 .2 —do —————— 

or filtered

east, and west, respectively, of the

Magnification 

atTo

2.5 K 

12.5 K

50 K, 1.25 K 

5 K 

1 K 

500 K

50 K 

50 K

50 K 

main vault.

Remarks

Magnification also at 

1 K, 100, and 10.

Magnification variable 

with earthquake. 

Do. 

Located at one of the 

remote sites. 

Magnification at 1 sec. 

Three instruments located at three remote 

sites.

Timing system: Geotech TG-110 and Geotech 5400. 

System response curves: Available from station. 

SHORT HISTORY

ADK was started in early 1966 with instrumentation from an LRSM van. The station records data by telemetry from SMY and 

from the CIRES array.
ALASKA 

Anchorage, AK

GENERAL INFORMATION 

Operated by: 

Address:

Alaska Methodist University

Alaska Methodist University--Closed

Anchorage, AK

(Obsolete)

Address to obtain records:

National Geophysical and Solsr-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

AMU Anchorage- 61. 1917 149.8050 53 2/65 12/05/75 GraveIs; Qua te rna ry.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec) 

o

Galvo 

T (sec)

Type Magnification „ . 

, . _ Remarks recording at T

AMU Benioff- Z.NS.EW 1.0 0.2 Helicorder 20 K

Timing system: Sprengnether TS-100. 

System response curves: Not available. 

SHORT HISTORY

AMU was established at Alaska Methodist University to aid in 1964 aftershock work. It ran intermittently until December 

1975. The records that are archived are complete from March 1965 through May 1967. The intermittent recordings are complete 

through the end of 1971. The rest of the records were kept at the Geology Department of the University and are now lost.
ALASKA

Clear Mews, AK

GENERAL INFORMATION 

Operated by: 

Address:

Department of the Air Force

13th Missile Warning Squadron (ADC) 

Clear Mews, AK 99704

Telephone: 907-522-3333 

Address to obtain records:

Unknown. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CMA Clear Mews- 64.2900 149.1800 181 1964 1/74 Unconsolidated, glaciofluvial, 

sandy gravel; late Pleistocene.

INSTRUMENTATION

4

Code Type

CMA Geotech 4681 ——— •

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at TQ Kcmarus

the warning system; one, 

a monitor subsystem.

Timing system: Oven-controlled, quartz-crystal frequency standard and Stroboscope, Model 5504. 

System response curves: Not available. 

SHORT HISTORY

CMA was activated in 1964 in order to give warning of seismic disturbances that might require radar-antenna realinement. 

Poor location, difficulty in obtaining parts, and excessive maintenance led to deactivation of the station in January 1974.

10
GENERAL INFORMATION 

Operated by: 

Address:

ALASKA 

College, AK

U.S. Geological Survey

College Observatory 

Yukon Drive on West Ridge 

College, AK 99701

Telephone: 907-479-6146 

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

COL College Outpost——————— 64.9000 147.7933 320 1/64 Open— 

CMO College (Fairbanks)——— 64.8600 147.8350 180 1949 1977

Schist; Precambrian. 

Do.

INSTRUMENTATION

Seismometer

Code

COL

Type

Rom- r,ff MP-- —— ____

Component

_-- 7

T (sec)

1.0 

1.0 

15.0

i r\

Galvo 

Tg (sec)

0.75 

.75 

100.0 

*o

Type Magnification 

recording at T

Photo paper

—do —————

—do —————

--stn-------

100 K 

100 K 

15 K 

-*^r\ v

Remarks

WWSSN. 

Do. 

Do.

CMO Wilson-Lamison 

Wenner — - ——— --

Z

NS

1.1 1 . 1

11.8

Pen and ink

--do —————

Not producing quality 

records.

Timing system: WWSSN standard.

System response curves: COL, see figure 1, p. 363.

SHORT HISTORY

The earliest magnetic and seismic monitoring began in 1935 in the Eielson Memorial Building on the campus of the University 

of Alaska, as a cooperation between the University and the USC&GS. The College Magnetic Observatory was started in 1948 and has 

been operated by a succession of Government agencies since that time.

CMO has been located on the campus of the University of Alaska since 1949. It housed the Benioff MC, as well as the 

Wilson-Lamison and Wenner; it also operated several strong-motion instruments from 1965 to 1977. The Wenner was used in the 

Tsunami Warning System until 1976. CMO records (photo paper) are on file in Boulder, Colo. , through 1972.

COL was established as a WWSSN station.

11
ALASKA 

College, AK

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

Barrow Observatory—Closed 

c/o College Observatory 

College, AK 99701 

(Obsolete)

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code

RRU

„ . Latitude Station name ,, ... (deg N.)

RavvsM.i__ ________________ 71 -3(1 -3 -3

Longitude 

(deg W.)

IR£ ii. a/.

Elev 

(meters)

_i R

Date 

opened

1 /AR

Date 

closed

£/7R

Foundation; geologic age

INSTRUMENTATION

Code

RPU

Seismometer Galvo Type Magnification _ ,

Type Component T (sec) T (sec) recording at T

background noise level.

Timing system: Sprengnether frequency standard. 

System response curves: Not available. 

SHORT HISTORY

The seismic program was initiated at the Barrow Observatory by the USC&GS in the fall of 1957, although the records 

presently available date back only to 1965. The program terminated in April 1975, the instruments finally being shut down 

in June.

12
GENERAL INFORMATION

ALASKA 

Fairbanks, AK

Operated by: University of Alaska

Address: Seismology Laboratory 

Geophysical Institute of 

the University of Alaska 

Fairbanks, AK 99701

Telephone: 907-479-7320 

Address to obtain records: 

As above. 

SITE INFORMATION

Code

AGI 

ANY 

(AUF) 

(AUK) 

(AUM) 

(AUP) 

BDP 

BI1 

BI2 

BI3 

BI4 

(BUT) 

BRH 

CCB 

(CDA) 

(CHI) 

(CHO) 

CNA 

DDM 

DMA 

(DMB) 

ELV 

ENG 

(FLP) 

FYU 

FY1 

FY2 

vv*

Station name

—— do ————————————

—— do ————————————

—— do ————————————

—— do ————————————

——— do ——————————————————

—— do - — — — — — — - —

Birch Hill ————————

—— do ————————————

—— do ——-«-- —— - — —

___Hr,_______________-

Latitude 

(deg N.)

—— 59.3800 

—— 64.5655

—— 59.3710

—— 59.3622

—— 70.1318

—— 69.6235

—— 69.5847

—— 69.5202 

—— 58.0467

—— 64.8648

—— 64.6480

—— 58.9553

—— 64.8603

—— 64.7352

—— 57.7012 

—— 66.5660

—— 67.2657

—— 67.1193

.___ t.a M.f.c\

Longitude 

(deg W.)

153.4200 

165.3717 

153.4590 

153.4270 

153.3528 

153.4205 

149.2593 

143.6417 

145.8952 

144.3707 

142.9800 

158.3367 

147.6403 

147.8053 

153.5295 

155.5797 

156.7117 

148.9450 

145.8617 

164.5220 

153.9605 

147.8487 

147.0460 

156.2650 

145.2317 

148.9755 

147.1163 

i/.t; 6O07

Elev 

(meters)

580 

330 

166 

259 

106 

1033 

709 

10 

1100 

690 

745 

550 

330 

183 

390 

250 

250 

700 

920 

240 

300 

180 

220 

485 

137 

1040 

670 

i/. An

Date 

opened

8/71 

8/76 

9/75 

9/75 

9/75 

9/75 

8/71 

9/75 

9/75 

9/75 

9/75 

1975 

7/9/70 

2/25/71 

1974 

8/75 

1974 

8/71 

9/77 

8/77 

10/75 

8/71 

9/7/71 

10/75 

2/9/72 

9/75 

9/75

Q /7R

, a e . Foundation: geologic age closed

1/76

--do—

--do——

— do— 

— do— 

9/76 

Open-- --- 

--do—

— do—

— do— 

--do— 

8/10/72 

1/1/75

—do—

--do— 

9/76 

Open-- --- 

--do—

— do—

8/72 

6/76 

Open-- --- 

--do— 

--do— 

--do--
SITE INFORMATION- -Continued

Code

FY4 

FY5 

GIA 

GKC 

GLM 

(HDA) 

(HOM) 

HPP 

HUR 

KTA 

LVY 

(MAA) 

MCB 

MCK 

(MCN) 

MCR 

MIK 

(MMC) 

NEA 

NRA 

(OPT) 

PAX 

PJD 

(PNM) 

(PUB) 

(RAI) 

RDS 

(RED) 

RON 

(SCF) 

SCM 

SCT 

(SHU) 

(SII) 

( svsl

Station name

—— do — — ----- — - —— -- —

Geophysical Institute- —

Hepp ————————————————

McKinley —— — — —— —— ——

Sheep Creek Facility —— 

Sheep Creek Mountain— —

Latitude 

(deg N.)

67.4545 

67.1418 

64.8600 

64.1787 

64.9873 

64.4058 

59.6583 

64.7905 

62.9788 

66.8572 

64.2167 

57.8567 

64.7283 

63.7323 

59.1010 

63.9852 

64.8723 

57.3333 

64.5892 

63.8918 

59.6527 

62.9708 

65.0350 

56.8050 

57.7733 

58.0605 

64.8265 

60.4190 

62.6912 

61.9947 

61.8333 

62.3192 

58.6280 

56.5600 

^•7 it./.')

Longitude 

(deg W.)

146.2117 

143.2403 

147.8350 

147.9347 

147.3890 

146.9538 

151.6433 

147.9592 

149.6462 

162.6112 

149.2533 

153.0803 

147.2100 

148.9350 

154.1998 

149.0503 

147.8280 

154.6350 

149.0657 

160.5143 

153.2297 

145.4687 

147.5083 

157.5833 

155.5167 

153.1592 

148.1447 

152.7720 

150.2037 

150.0392 

147.3277 

150.2972 

152.3488 

154.1820 

tut nono

Elev 

(meters)

790 

560 

158 

490 

720 

450 

198 

170 

510 

25 

230 

131 

200 

610 

273 

456 

160 

340 

400 

105 

625 

1130 

740 

442 

280 

520 

510 

1067 

470 

67 

1020 

140 

34 

500

i ot

Date 

opened

9/75 

9/75 

6/69 

7/76 

8/68 

9/77 

8/76 

11/9/71 

8/71 

8/76 

7/72 

5/20/77 

9/68 

12/64 

1975 

9/71 

5/70 

1975 

8/71 

8/76 

1974 

7/69 

1/67 

1974 

1974 

10/75 

6/77 

1974 

8/71 

8/71 

6/66 

8/71 

1974 

10/75

O /I 1 111

ALASKA— Continued 

Fairbanks, AK

1 , Foundation; geologic age

Open — --- 

—do— 

1/71 

Open — - — 

—do— 

—do— 

— do— 

6/76

6/75 

Open-- --- 

— do— 

— do— 

9/71

—do—

7/75 

3/75 

Open — --- 

— do— 

— do— 

—do— 

—doll/71 

Open — - — 

— do— 

— do— 

— do— 

— do— 

10/74 

6/75 

Open— 

6/75 

Open— 

— do—

A^--. _ _

14
SITE INFORMATION- -Continued

., . r.^ ... Latitude Longitude Code Station name ,, „ , , , 6 „ , (deg N.) (deg W.)

(SPL) Spiridon Lake ———————— 57.7592 153.7713

SSH Sunshine ———————————— 62.1667 150.0777

TNA Tin City ———————————— 65.5617 167.4367

THN Tanana ————————————— 65.2567 151.9117

(UKL) Utashik Lake ————————— 57.4017 156.8550

(YCB) Yellow Creek Bluff ———— 56.6483 158.6817

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

AGI, (AUF), 

(AUK), (AUM), 

(AUP), (MAA), 

(MCH), (OPT),

RED, (SHU): Mark L-4C ————————— Z 1.0

ANV: Geotech 18300 —————— Z 1.0

Geotech SL-210 ————— Z Long

BDP, ENG, 

HPP, HUR, 

MCR, RON, 

(SCF), SCT,

TNA, TNN: Geotech S-13 —————— Z 1.0

BI1, BI2, 

BI3, BI4, 

FY1, FY2, 

FY3, FY4, 

FY5, FYU: Geospace HS-l-l-B —— Z 1.0

(BMT), (CDA), 

(CHO), (MMC), 

(PNM), (PUB), 

(YCB): Geotech 18300 —————— Z 1.0

BrJH, ELV: Geotech S-13 —————— Z 1.0 

CCB, LVY,

MCB, PJD: Geotech 18300 —————— Z 1.0

(CHI), (DMB), 

(FLP), (HOM), 

(RAI), (SII), 

(SKS), (SPL),

(UKL): Ranger ——————————— Z 1.0 

CNA: Geotech 18300 —————— Z 1.0

DDM, DMA, 

GKC, (HDG), 

KTA, MCK, 

NEA, NRA, 

PAX, RDS,

CTM. ___H«-____-_-________ 7 in

Elev Date Date 

(meters) opened closed

600 10/75 Open— 

100 8/71 9/72 

50 8/76 Open504 1/65 —do— 

410 10/75 —do— 

320 1974 — do-­

Gal vo Type

T (sec) recording

Develocorder 

—— Develocorder

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

--- Magnetic tape

ALASKA—Continued 

Fairbanks, AK

Foundation; geologic age

——

Magnification Remarks 

o

—— Telemetered to HOM.

Do. 

Do.

Telemetered to HOM.

15
INSTRUMENTATION- -Continued

Seismometer

Code Type Component T (sec)

GIA: Geotech 18300 —————— Z 1.0 

GLM, MCK,

___H^---___-_______ - 7 we Tru on n

ALASKA- - Cont inued 

Fairbanks, AK

Galvo Type Magnification _ ,

T (sec) recording at T

short-period Z and EW. 

GLM and MCK are telemetered to Fairbanks.

Timing system: Tracer Inc. Model 05 crystal clock referenced to WWV. 

System response curves: Available from station. 

SHORT HISTORY

BLR and SVW were originally owned by the University of Alaska and were transferred to the Alaska Tsunami Warning Center 

on September 4, 1971, and August 24, 1972, respectively. See ALASKA, Palmer, for the listing of these stations.

BIG was originally owned and operated by the University of Alaska and was transferred to the USGS at Menlo Park, Calif., 

on July 31, 1972. See ALASKA, Menlo Park, for the listing.

The Institute plans to publish a quarterly bulletin of Alaskan earthquakes starting in November 1977.

16
ALASKA 

Palmer, AK

GENERAL INFORMATION

Operated by:

Address:

Telephone:

National Oceanic and Atmospheric Administration 

National Weather Service

Alaska Tsunami Warning Center (formerly Plamer Observatory) 

P.O. Box Y 

Palmer, AK 99645

907-745-4212

Address to obtain records:

Helicorder records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Develocorder records:

Alaska Tsunami Warning Center 

P.O. Box Y 

Palmer, AK 99645

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

BLR Black Rapids————————— 63.5017 145.8450 809 3/65 Open—

(CDA) Cold Bay———————————— 55.2700 162.8961 —— 8/70 11/70

CSA Cape Sarichef———————— 54.5944 164.8750 152 11/28/70 5/18/71

GIL Gilmore Creek———————— 64.9750 147.4950 350 10/13/67 Open—

GMA Granite Mountain—————— 65.4286 161.2319 858 9/17/70 --do—

IMA Indian Mountain—————— 66.0683 153.6786 1380 8/05/71 —do—

KDC Kodiak————————————— 57.7478 152.4917 13 4/02/64 —do—

MID Middleton Island—————— 59.4278 146.3389 37 4/10/64 —do—

NIK Nikolski———————————— 52.9743 168.8528 207 5/17/71 —do—

PMA Port Moller—————————— 55.9786 160.4972 314 9/06/72 —do—

PMR Palmer————————————— 61.5922 149.1308 100 9/01/67 —do—

PMS Palmer South————————— 61.2447 149.5606 716 5/25/67 —do— 

	(Arctic Valley).

PWA Palmer West————————— 61.6508 149.7133 137 5/23/67 —do— 

	(Houston).

SMY Shemya————————————— 52.7308 174.1031 E. 58 11/17/70 —do—

SVW Sparrevohn—————————— 61.1081 155.6217 762 8/67 —do—

TOA Tolsona————————————— 62.1047 146.1722 909 9/15/71 —do—

TTA Tatalina———————————— 62.9300 156.0219 914 8/10/72 —doSchist; Devonian. 

Undifferentiated; Quaternary. 

Volcanics; Quaternary. 

Schist; Precambrian. 

Granite; Cretaceous.

Andesitic volcanics; Late JurassicEarly Cretaceous.

Surficial gravels; Jurassic and (or) 

Cretaceous.

Mudstones, siltstones, and sandstones 

of Yakataga Formation; Miocene to 

Holocene.

Metamorphics and plutonics; Tertiary. 

Volcanics; Pliocene. 

Tuff; Mesozoic.

Metaclastics and metavolcanics of the 

McHugh Complex; Late Jurassic and 

(or) Cretaceous.

Shallow glacial debris (Holocene), 

underlain by shales, sandstones, 

and coal beds (Tertiary).

Basement rocks (siliceous rock, 

argillite, and conglomerates); 

Tertiary.

Shale and sandstones; Cretaceous. 

Sandstone; Tertiary. 

Granitic intrusive; Tertiary.

17
INSTRUMENTATION

ALASKA — Continued 

Palmer, AK

Seismometer Galvo Type

Code Type

(CDA) 

CSA

GMA --do —————————

KDC Geotech 4681A —— —— 

MID —do —— — — ———— —

MLP 

NIK Geotech S-13 —— ———

PMA --do —— — — —— — — —

PMR Geotech 4681 — —— -

Geotech 7505A — —— -

PMS Geotech S-13 —— ——

PWA --do ——— — — — — —

--do ——— —— —— — —

SVW --do —— — ——— ———

Component T (sec) T (sec) recording

Helicorder

Helicorder

Helicorder

Helicorder

Helicorder

Helicorder

SN,WE 1.0 —— Helicorder

Z 20.0 —— —do —— ——

Helicorder

Z 1.0 —— --do —— —— —

Helicorder

Magnification

at T 

o

50 K

200 K 

100 K

200 K 

50 K

200 K

50 K 

12.5 K

6 K 

1.6 K

12 K 

6 K

6 K

10,000 K 

.01, .1, 1 K 

1 K 

.1, 1 K 

.1, 1 K

100 K 

100 K

12 K 

3 K 

.01, .1, 1 K

100 K 

50 K

200 K 

100 K

Remarks

Telemetered to PMR.

Telemetered to PMR. 

Do.

Do. 

Do.

Do.

Do. 

Do.

Do. 

Do.

Telemetered to PMR. 

Do.

Do.

Telemetered to PMR. 

Do.

Do. 

Do. 

Do.

Do. 

Do.

Do. 

Do.

Timing system: Geotech 19000.

System response curves: See figure 4, p. 364.

SHORT HISTORY

PMR records all the stations in the Alaska Tsunami Warning System and is the headquarters for the Alaska Regional 

Seismological Network.

BLR was previously equipped and operated by the University of Alaska Geophysical Institute and was transferred to Palmer 

on September 4, 1971.

SVW Sparrevohn was previously operated by the University of Alaska and was transferred on August 24, 1974.

18
GENERAL INFORMATION 

Operated by:

Address:

Petersburg Public School 

Geology students

Petersburg Public School 

P.O. Box 289 

Petersburg, AK 99833

Telephone: 907-772-4434 

Address to obtain records:

As above. 

SITE INFORMATION

ALASKA 

Petersburg, AK

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(PSA) Petersburg- 56.8083 133.9533 17 12/75 Open-­ Slate, phyllite, graywacke; 

Cretaceous.

INSTRUMENTATION

Code

rpsil

Seismometer

Type Component T (sec)

fienl-oi-Vi <?- 1 3__--_____ 7 1 f\

Galvo

Tg (sec)

Type

recording

Magnification

at T 

o

Id V Ma.

Timing system: Geotech TG-120.

System response curves: Not available.

SHORT HISTORY

(PSA) was started as a high school project under the direction of Paul Bowen, an instructor at the school.

19
ALASKA 

Sitka, AK

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

U.S. Geological Survey

U.S. Geological Survey

Box 158

Sitka, AK 99835

907-747-3332

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BIO

CTT Cit-lra_____--.._-

————— 56.8517 135.5583 61

____-__- s.^ r\s.f.a its. •}•>/./. 10

6/08/67 

lo/.n

5/70 Hornblende-biotite granodiorite ; 

Cretaceous.

Early Cretaceous.

INSTRUMENTATION

Seismometer

Code

BIO 

SIT

Type

Benioff 4681A ———

Component TQ (sec)

1.0

1.0 

7.0

Galvo 

Tg (sec)

0.2

.2 

15.0

Type 

recording

Helicorder

Pen and ink 

Photo paper

Magnification D , 

. T Remarks at o

50 K Telemetered to SIT and 

PMR.

25 K Telemetered to PMR. 

Uncalibrated ---

Timing system: Sprengnether TS-100 Crystal Chronometer. 

System response curves: SIT--see figure 4, p. 364. 

SHORT HISTORY

Recording in Sitka began in 1904 at the Astronomical Observatory using a two-component horizontal Bosch-Omori. Wenner 

horizontal components replaced the Bosch-Omori in 1932; they were refurbished in 1941-42. The instruments were moved to the 

present SIT location in September 1940. A Wilson-Lamison short-period vertical instrument was added in 1956. The Benioff 

mentioned above was installed in January 1972 and is recorded concurrently at the Alaska Tsunami Warning Center.

BIO was founded in 1967 to enhance the regional capabilities of Sitka, but it proved to be too noisy.

20
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

University of Colorado

CIRES

University of Colorado

Boulder, CO 80309

303-492-8028

Address to obtain records:

CIRES

University of Colorado

Boulder, CO 80309

ALASKA 

Boulder, CO

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

AD1 Great Sitkin————————— 52.0233 176.1517

AD2 Umak——————————————— 51.9033 176.0183

ADS Kagalaska——————————— 51.7428 176.3569

AD4 Hidden Bay—————————— 51.6986 176.6325

ADS Yakak—————————————— 51.6289 176.9252

AD6 South Kanaga————————— 51.7083 177.2417

AD7 North Kanaga————————— 51.9000 177.0900

ADS Adagdak————————————— 51.9806 176.6003

AK1 West Kanaga—————————— 51.6650 177.6417

AK2 South Tanaga————————— 51.6633 177.9300

AK3 North Tanaga————————— 51.8067 177.8200

INSTRUMENTATION

_____________Seismometer__________ 

Code Type Component

All stations Mark L-4C———————— Z 

--do————————————— EW

244

381

198

213

152

137

244

259

61

99

351

1974

1974

1974

1974

1974

1974

1974

1974

1975

1975

1975

Open--

—do--

—-do--

— do—

—do-

—do--

—do--

—do--

—do--

—do--

—do—

Basalt; Tertiary. 

Volcanics; Tertiary.

Do.

Do.

Do.

Do. 

Basalt; Tertiary.

Do. 

Volcanics; Tertiary.

Do.

Do.

T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

1.0 

1.0

Develocorder 

—do——————

Timing system: Geotech Model TG-110 and 5400. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations constitute a micro-earthquake network, centered on Adak, installed under a USGS grant to study earthquake 

prediction in an active subduction zone.

All the AK stations were previously known as AT's and were changed as of October 1976.

21
ALASKA 

Garland, TX

GENERAL INFORMATION

Operated by: Teledyne Geotech

Address : Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394

Address to obtain records: 

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

,, , „.. . . Latitude Longitude Code Station name ,, ... /-,,,•> (deg N.) (deg W.)

(AC-IS) Amchitka ———————————— 51.3894 179.3425 E.

(AD-IS) Adak Island —————————— 51.8750 176.6792

(BQ-AK) Bethel —————————————— 60.7789 161.8836

(FB2AK) --do ———————————————— 64.9100 147.4464

(SP-IS) St. Paul ———————————— 57.1542 170.2181

(SQ-IS) Shemya —————————————— 52.7269 174.1092

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(AA-IS), (BQ-AK), 

(SP-IS), (SQ-IS): Geotech S-13 ——— Z,NS,EW 1.0

(AC-IS): Geotech S-13 ——— Z,NS,EW 1.0

(AD-IS), (FB-AK): Benioff ——————— Z,NS,EW 1.0 

Sprengnether ——— Z,NS,EW 20.0

fP"R9AKt • Qnvonnnot hov---- 7 VQ TTU On f\

Elev Date Date „ , .. . , 

, ^ i , , , Foundation; geologic age (meters) opened closed

6 7/12/67 9/08/67 

61 7/06/67 9/10/67 

61 7/24/64 3/22/66 Glacial drift. 

46 7/06/67 9/10/67 

716 9/03/68 10/10/68 Schist. 

343 6/09/70 6/14/71 

10 7/02/67 9/10/67 

61 7/14/67 9/10/67

Galvo Type Magnification _ ,

T (sec) recording at T Remarks 

8 °

--- Magnetic tape --- Portable system.

—— Magnetic tape, AD-IS: 40 K —— 

35 -mm film.

22
ALASKA--Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

23
GENERAL INFORMATION

ALASKA 

Las Vegas, NV

Operated by: U.S. Geological Survey

Address: U.S. Geological Survey 

3060 South Highland Dr. 

Las Vegas, NV 89109

Telephone: 702-734-3416 

Address to obtain records: 

As above . 

Available only on 16-imn film on a limited basis. 

SITE INFORMATION

Code

ACA 

ACB 

ACC 

ACD 

ACE 

ACF 

AMA 

ANA 

ANB 

AND 

ASB 

ASC 

ASD 

LSI 

RAT 

SSI

Station name

--do ——————————— ——

—do —————— ———————

--do —— — — — — —— —— ——

Little Sitkin Island----

Semisopochnoi Island — —

Latitude Longitude 

(deg N.) (deg W. )

51.4809 179.1193 

51.4626 179.0909 

51.4843 179.0431 

51.4282 179.1366 

51.4005 179.1728 

51.5258 178.9941 

51.2884 179.1093 

51.6277 178.6564 

51.6062 178.7917 

51.5623 178.9534 

51.3604 179.2474 

51.4631 179.1583 

51.3907 179.3421 

51.9197 178.5338 

51.7991 178.3301 

51.8924 179.5883

Elev Date Date Foundation; geologic age 

(meters) opened closed

42 5/08/71 12/11/72 Hardrock. 

47 5/08/71 6/31/72 Do. 

26 5/08/71 6/31/72 Do. 

37 5/08/71 6/31/72 Do. 

9 5/08/71 6/31/72 Marsh. 

62 5/08/71 6/31/72 Hardrock. 

503 10/09/70 4/30/73 Do. 

133 8/25/69 4/30/73 Do. 

160 10/14/70 4/30/71 Do. 

186 7/18/70 4/30/73 Do. 

34 5/25/69 4/30/73 Marsh. 

40 7/28/69 12/11/72 Hardrock. 

61 5/29/69 4/30/73 Marsh. 

10/20/70 6/30/72 Hardrock. 

226 10/14/70 ft/30/73 Do. 

178 10/17/70 4/30/73 Do.

INSTRUMENTATION

Seismometer

Code

ACA 

ACB 

Arr

Type

Mark L-4C — —— —— -

--do — — — — —— ---

Component T (sec)

Z 1.0

__ 7 in

Galvo Type Magnification R.mar.k<=

T (sec) recording at TQ KemarKs

DC to 16 Hz Develocorder —— — - 

DC to 34 Hz Magnetic tape —— ——

24
INSTRUMENTATION— Continued

Seismometer

Code

ACD 

ACE 

ACF 

AMA

ANA 

ANB 

AND

ASB 

ASC 

ASD 

LSI 

RAT

SSI

Type

Mark L-4C ——————— •

Hall-Sears HS-10 —— -

W/T* o i

Mark L-4C ——————— •

wrr* o i

Component

Z

Z

Z

To (sec)

1.0 

1.0 

1.0 

1.0 

1.0 

1.0 

1.0 

1.0

1.0 

1.0 

1.0

1.0 

1.0

1.0 

1.0

Galvo

T (sec) 

g

DC to 34 Hz 

--do —————

--do —————

DC to 16 Hz 

--do —————

--do ————————

—do —————

—do ————— 

— do —————

--do —————

--do —————

DC to 16 Hz

--do ————————

--do —————

--do —————

ALASKA — Continued 

Las Vegas, NV

Type Magnification 

recording at T

Magnetic tape — - 

--do ———————

--do ——————————

Helicorder, -— 

Develocorder . 

--do ——————

--do ——————

Develocorder ---

Develocorder . 

—do ——————

—do ——————

—do ——————

Helicorder, -— 

Develocorder.

--do —————————

--do ——————

--do ——————

Remarks

——

Timing system: Automatic recording of WWV. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

All these stations were established to monitor the seismicity of the area in order to assess what effect, if any, 

nuclear testing had on the seismicity.

25
ALASKA

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

Alaska Seismic Project

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2510 or 2579 

Address to obtain records:

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

SITE INFORMATION

Code

(BAL) 

(BCS) 

(BGA) 

BIG 

(BLY)

CFI 

(CGB) 

CHX 

CKK 

CVA 

(DSB) 

DSK 

ERN 

FID 

FIS 

(GLB) 

(GLC) 

(GYO) 

HIN 

HQN 

ILM 

KLU 

rKMPi

Station name

(Canada) .

Chaix Hills —————— •

Chekok —————————— -

VimKall Pace--------

Latitude 

(deg N.)

- —— 61

- —— 59

- —— 61

- —— 59 

- —— 61

- —— 61

- —— 61

- —— 60

- —— 59 

- —— 60

- —— 60

- —— 60

- —— 61 

- —— 60

- —— 61

- —— 61 

- —— 60

- —— 60.

- —— 60

- —— 60.

.____ f.1

.0362 

.9483 

.2223 

.3890 

.3725

.1827 

.0690 

.0667 

.9597 

.5465 

.0767 

.5020 

.4442 

.7288 

.1442 

.4418 

.8907 

.1463 

.3968 

.4517 

.1820 

.4928 

i i; 1 /. -J

Longitude 

(deg W.)

142 

139 

150 

155 

139

147 

151 

141 

154, 

145, 

139 

147. 

145, 

146, 

150, 

143. 

147. 

141. 

146. 

138. 

152. 

145.

1/.C.

.3445 

.6167 

.9658 

.2170 

.0260

.7665 

.4525 

.1183 

.2332 

.7493 

.5450 

.6468 

.1123 

.5965 

.2185 

.8105 

.0725 

.4715 

.5017 

.8770 

.8162 

.9202 

noon

Elev 

(meters)

1300 

10

20 

567 

799

3 

160 

793 

732 

90 

640 

15 

570 

488 

76 

845 

3 

183 

611 

372 

550 

1012 

1 i r\i

Date 

opened

8/24/73 

6/25/76 

10/08/75 

1966 

7/22/74

7/31/74 

10/08/75 

9/04/74 

7/29/72 

8/31/71 

9/08/74 

7/27/74 

9/16/71 

10/07/74 

9/24/74 

8/25/73 

7/24/72 

6/01/76 

10/03/74 

10/01/74 

8/07/71 

7/22/72

, , Foundation; geologic age closed

Open— 

— do—

3/25/76 

Open — 

— do—

— do— 

3/25/76 

Open— 

—do— 

—do— 

6/08/76 

10/18/75 

8/29/73 

Open— 

5/04/76 

Open— 

— do— 

—do— 

— do— 

— do—

— do— 

— do—

——

_-.

26
SITE INFORMATION- -Continued

Code

KNK

KTM

KYK

MLA (MLS)

(URN)

MPA (MSP)

MTG

NGL

NIN

NKA

NNL

NTK

(PCL)

PCA (PIN)

PNL

PTE (PRG)

(PTR)

PWL

RDT

(RGD)

(RIU)

SML (SAW)

(SEG)

(SGA)

SKL

SKT (SKN)

SLV

SPU

Station name

Knik —————————

Katmai ———— ——— ——

Kayak Island ——— ——

Malaspina —--———-

Martin River- ------

Moose Pass ——— -----

Montague Island -----

North Gasline -------

Ninilchik One —— —— -

Nikishka —— ———— ——

Ninilchik —— —— —— —

Nunatak — —— ________

Point Campbell-- — —

Pinnacle ——————— —

Peninsula —————— - —

Portage -------------

Potter --------------

Port Wells — — —— ——

Redoubt -------------

Ragged Mountain — ---

Riou---- ------------

Sswmill- —— ----- — —

Seven Egg River-- — -

Sherman Glacier -----

Skilak —— —— —— —— —

Skwentna — — ——— - —

Seldovis-- ——— ------

Spurr ——— ——— --- — —

Latitude 

(deg N.)

—— 61.

—— 58.

—— 59

—— 59.

—— 60.

—— 60.

—— 59.

—— 60.

—— 60.

—— 60.

—— 60.

—— 59.

—— 61.

—— 60.

—— 59.

—— 60.

—— 61.

—— 60.

—— 60.

—— 60.

—— 59.

—— 61.

—— 60.

—— 60.

4125

3247

.8683

7633

5350

4892

9118

8208

0112

7430

0422

8777

1428

0967

6687

8645

0575

8593

5738

2192

8783

8082

9577

5012

——— 60.5143

—— 61.

—— 59.

—— 61.

9803

4713

1817

Longitude 

(deg W.)

148.

155,

144.

140,

144.

149

147.

149

151

151,

151

139

150

140

139

149

149

148

152

144.

141

148

150

145

150

151

151

152,

.4557

.3765

.5232

.1500

.0083

.3607

.4970

.9982

.5355

.2380

.2963

.0352

.0155

.2567

.3970

.0237

.7292

.3348

.4062

.5457

.2283

.3330

.6773

.2070

.2152

.5297

.5805

.0543

Elev 

(meters)

595

945

375

46

957

150

31

122

110

100

366

1050

90

975

579

55

695

549

930

610

15

740

3

424

660

564

91

800

Date 

opened

8/11/73

7/27/73

10/02/74

9/04/74

8/22/75

8/05/73

10/03/74

9/26/74

8/28/71

9/10/71

8/24/72

10/31/75

9/04/73

9/05/74

9/02/74

8/29/72

8/12/73

8/03/74

8/09/71

9/30/74

8/03/76

8/31/73

10/08/75

8/16/76

9/09/71

8/08/72

9/30/72

8/10/71

ALASKA — Continued 

Menlo Park, CA

, e . Foundation; geologic age closed

Open — ——

8/24/75

Open — ——

—do—

1/15/76

Open — ——

— do—

3/25/76

8/24/72

Open — ——

— do—

— do—

9/15/74

Open — ——

— do—

— do—

9/15/74

Open —

— do—

— do—

— do—

— do—

10/23/75

Open-- - —

— do—

— do—

— do—

—do—

27
SITE INFORMATION—Continued

ALASKA—Continued 

Menlo Park, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

SUA (SSN) Susitna————————————— 61.4638 150.7433

SNH (SSP) Sunshine Point——————— 60.1800 142.8383

SST Susitna One————————— 61.4342 150.7803

SGA (STG) Stephens Glacier————— 61.4207 146.3948

STY Stony River————————— 61.1445 154.2018

SUK Suckling Hills——————— 60.0767 143.7833

SEW (SWD) Seward————————————— 60.1037 149.4493

TLK Talkeetna Mountains---- 62.4938 147.8780

(TSI) Tsina—————————————— 61.2262 145.3373

VLZ Valdez————————————— 61.1315 146.3320

VZS Valdez South———————— 61.0442 146.3053

VZW Valdez West————————— 61.0590 146.5540

(WAX) Waxell Ridge———————— 60.4500 142.8517

WLM Willow Mountain---——— 61.7736 145.1981

WRG White River Glacier——— 60.0378 142.0317

YAH Yahtse————————————— 60.3633 141.7450

YKT Yakutat———————————— 59.4517 138.8770

(YKG) Yakataga———————————— 60.0700 142.4222

(YTT) Yakutat Wa—————————— 59.5793 139.5120

INSTRUMENTATION

_____________Seismometer_____________

Code Type Component T (sec)

o

All Stations Mark L-4C—————————— Z 1.0

1297

732

780

1326

1047

427

55

1719

1113

10

668

796

975

988

550

2135

372

60

15

8/15/72

9/10/74

8/24/71

7/11/74

7/24/72

10/02/74

8/22/72

7/10/74

9/02/71

7/22/72

7/17/72

8/22/75

2/29/72

9/10/74

9/05/74

10/06/72

10/08/72

9/14/73

—do—

—do—

8/15/72

1/28/76

1/29/75

Open—

—do—

11/11/75

Open—

—do—

3/27/76

Open—

—do—

6/14/72

Open—

—do— 

9/30/74 

Open— 

9/30/73

Galvo 

Tg (sec)

Type Magnification 

recording at T

Remarks

GLB, RDT,

SKN, and VLZ

also have: Hall-Sears HS-10- NS.EW 2.0

Develocorder, 

magnetic tape.

-doBLY records on heatsensitive paper.

NKA, PRG, and SSP also 

had horizontals at one 

time.

28
ALASKA—Continued 

Menlo Park, CA

Timing system: Geotech 19000.

BLY uses an Electronics Research digital chronometer with WWV signals superimposed on the trace at the beginning 

and end of the record.

System response curves: See figure 2, p. 363. 

SHORT HISTORY

BIG was previously operated by the University of Alaska and was transferred on July 31, 1972 to the USGS.

YKT was renamed HQN on October 1, 1974.

YKG was closed from September 11, 1974, to June 2, 1976.

29
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

Menlo Park, CA

Address to obtain records:

UNA:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

ALASKA

Menlo Park, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

ADA Adak (Finger Bay)-

MFA Mitchell Field——-

SBY Sand Bay———————-

UNA Unalaska——————-

51.8633 176.6550

51.9350 176.5917

51.9976 176.0920

53.8733 166.5333

7/49 4/54

7/49 after 1952

8/48 after 1951

4/06/54 9/10/56

INSTRUMENTATION

Seismometer

Code

ADA 

MFA 

SBY 

UNA

Type

HVO ———————————— -

Component

NS.EW

To (sec)

7.5 

?, 1.2, 0.7

1.0

T (sec) recording at T 

g °

--- Smoked paper --- ---

--- Pen and ink --- --- 

--- Photo paper ---

Tilling system: Not available.

System response curves: Not available.

SHORT HISTORY

UNA was installed by the USGS with a seismometer on loan from the USC&GS.

These stations were installed and operated by Austin Jones until his departure from Alaska.

30
ALASKA 

Palisades, NY

GENERAL INFORMATION

Operated by:

Address:

Lamont-Doherty Geological Observatory 

of Columbia University

Department of Seismology 

Lamont-Doherty Geological Observatory 

Columbia University 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

Photo records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Digital output:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery St. 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

FBK Fairbanks —— — — — —

INSTRUMENTATION

Code Type

FBK Geotech-7505A--

rf lt»^ ^ngluUf , El6V , "^^ ^^H Foundation; geologic age 

(deg N.) (deg W.) (meters) opened closed

Seismometer Galvo Type Magnification „ . ^

Component T (sec) T (sec) recording at T 

o g o

———— NS.EW 30.0 100.0 Magnetic tape

Timing system: Specific Products Model WVTR. 

System response curves: Available from station. 

SHORT HISTORY

FBK was part of a long-period seismological research program sponsored by ARPA and contrafted to Columbia University.

31
ARIZONA 

Flagstaff, AZ

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

Center of Astrogeology 

601 E. Cedar Ave. 

Flagstaff, AZ 86001

Telephone: 602-774-5261 

Address to obtain records:

July-September 1972:

Department of Geology 

Box 6030

Northern Arizona University 

Flagstaff, AZ 86001

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

FLG Flagstaff- 35.2932 111.7024 2445 11/66 9/72 Volcanic flows and ash beds.

INSTRUMENTATION

Code Type

Seismometer

Component TQ (sec)

Galvo 

T (sec)

Type Magnification „ . 

,. ,. „ Remarks recording at T

FLG Sprengnether 5007——— 

PS-100-4S.

Z,NS,EW 20.0 Pen and ink

Timing system: Sprengnether TS-100. 

System response curves: Not available. 

SHORT HISTORY

The station was originated in an effort to study planetary bodies in conjunction with the lunar seismic system.

32
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

ARIZONA 

Flagstaff, AZ

Sunset Crater National Monument

Supervisory Park Ranger 

Sunset Crater National Monument 

Tuba Star Route 

Flagstaff, AZ 86001

602-526-0586

Address to obtain records:

As above.

Recording erratic; a few tapes are on file for display purposes only. 

SITE INFORMATION

Code Station name

latitude 

(deg N.)

longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

SCN Sunset Crater National-- 35.3689 111.5425 2121 7/20/70 OpenMonument .

Bonita lava flow.

INSTRUMENTATION

Code Type

SCN Benioff — — — ——

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

Timing system: Kinemetrics TS-1. 

System response curves: Not available. 

SHORT HISTORY

SCN was installed and equipped by Willard L. Groene. It is not manned by a seismologist, has encountered many maintenance 

difficulties, and is mainly used for display purposes.

33
ARIZONA 

Payson, AZ

GENERAL INFORMATION 

Operated by: 

Address:

Air Force Technical Applications Center

Tonto Forest Seismological Observatory-Closed 

P.O. Box F 

Payson, AZ 85541 

(Obsolete)

Address to obtain records:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

TFO Tonto Forest Array- 34.2678 111.2703 1492 1963 3/75 Sandstones and limestones; Cambrian

and Devonian.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo 

Tg (sec)

Type 

recording

Magnification 

at T

Remarks

TFO Johnson MathesonGeotech 7505A——

Geotech 8700CZ 

Z

NS.EW

1.25

20.0

20.0

0.32 Film, 1,000 K

magnetic tape. 

110.0 —do——————— 100 K

30.0 -do- 100 K

Thirty-seven instruments

in an array. 

One component of the

three-component system

at each of seven

stations. 

Two components of the

three-component system

at each of seven

stations.

Timing system: Hyperian model HI-155.

System response curves: Available with records.

SHORT HISTORY

The Tonto Forest Seismological Observatory, built in 1963, was designed to record seismic events and to be used as a 

laboratory for seismograph equipment. The instrumentation was assembled, installed, and operated until April 30, 1965, by 

United Electrodynamics (UED)—later Earth Sciences, Teledyne Company. In March 1964, the LRSM program provided eight mobile 

seismic-recording vans to extend the existing arrays. On May 1, 1965, Geotech assumed the operation. During 1965, a 37-element 

short-period array and a 7-element long-period array were designed and installed. Recording of 17 of these instruments (shortperiod) was discontinued in October 1971.
GENERAL INFORMATION 

Operated by: 

Address:

Willard L. Groene—Deceased

Mummy Mountain Observatory—Closed 

8102 N. Mummy Mountain Road 

Scottsdale, AZ 85251 

(Obsolete)

Address to obtain records:

Department of Geology 

Arizona State University 

Tempe, AZ 85281

ARIZONA 

Scottsdale, AZ

Tonto Hills Observatory—Closed 

115 HO-HO-Kam Lane 

Tonto Hills 

Carefree, AZ 85331 

(Obsolete)

SITE INFORMATION

Code Station name

Latitude Longitude Kiev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

MMA Mummy MountainTHO Tonto Hills----

33.5544 111.9579 426 5/17/71 1/18/73 

33.8753 111.8763 1134 2/04/73 7/74

Conglomerate overlying igneous 

rocks.

Decomposed granite.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec) 

o

Galvo 

Tg (sec)

Type Magnification _ . 

yv 4. T Remarks recording at T

Both stations Sprengnether S-7000— 1.0 Pen and ink 100 K

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

MMA was started with private monies by Mr. Willard L. Groene. He moved the Mummy Mountain Observatory in 1973 because of 

noise problems. He established the Tonto Hills Observatory with the equipment from his original site. Upon his death in 1974, 

his equipment and records were donated to Arizona State University.

35
ARIZONA 

Tempe, AZ

GENERAL INFORMATION 

Operated by: 

Address:

Arizona State University

Department of Geology 

Arizona State University 

Tempe, AZ 85281

Telephone: 602-965-5081 

Address to obtain records:

Seismograph Station 

Department of Geology 

Arizona State University 

Tempe, AZ 85281

SITE INFORMATION

Code „. . Latitude Station name , , „ , (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

University.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo

T (sec) 

g

Type Magnification 

,. 4. T- Remarks recording at T

ASU Sprengnether- 13.0 Pen and ink Uncalibrated

Timing system: Sprengnether TS-100 since January 1, 1976. 

System response curves: Not available. 

SHORT HISTORY

ASU was opened in November 1971 with equipment borrowed from Willard L. Groene (see MMA) in a corner basement office in 

the Geology Department at the University. It operated continuously to mid-1976. Mrs. Willard Groene donated all of the late 

Mr. Groene's seismic equipment to the Geology Department in late 1975. His TS-100 timing system was then incorporated in 

January 1976. The station is expected to be operational in 1978.

36
GENERAL INFORMATION

Operated by:

Address:

Los Alamos Scientific Laboratory 

and Navajo Community College

Navajo Community College 

c/o Prof. Ray Barreras 

Tsaile, RPO, Chinle, AZ 86503

Telephone: 602-724-3311 ext. 266 

Address to obtain records:

Los Alamos Scientific Laboratory

Group G-2

P.O. Box 1663, MS 676

Los Alamos, NM 57454

505-667-7165

SITE INFORMATION

ARIZONA 

Tsaile, AZ

Code

TST

,,.. ... Latitude Station name , , „ .. (deg N.)

Tc-oi 1 o___________-_-____ If. "3799

Longitude 

(deg W.)

i no 9/.QA

Elev 

(meters)

9mo

Date 

opened

S. /99 /7";

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

Ranger SS-1- Helicorder 580 K Magnification at 10 Hz.

Timing system: Sprengnether TS-250.

System response curves: Available with records.

SHORT HISTORY

TSL is a cooperative venture between the Los Alamos Scientific Laboratory and the Navajo Community College. The station 

is located near the Upper Greasewood Trading Post; the data are telemetered to the Navajo Community College campus at Tsaile.

37
ARIZONA 

Tucson, AZ

GENERAL INFORMATION

Operated by:

Address:

Arizona Bureau of Mines for 

the U.S. Geological Survey

Tucson Observatory 

U.S. Geological Survey 

7290 E. Tanque Verde Rd. 

Tucson, AZ 85715

Telephone: 602-792-6420 

Address to obtain records

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

— 32.3097 110.7822 986 12/06/62 Open-- Gneiss

32.2467 110.8350 770 1909 --do— Silt, 

Quat

It -JQ^n llfl 70QQ 1A-5Q 1/fl^/^R 1/A9

; Precambrian.

sand, and gravel; 

ernary.

INSTRUMENTATION

Seismometer

Code

TUC 

TUO

Type

Benioff 1051 — — —

Benioff 1101 — — —

Component

WO

To (sec)

1.0

1.0 

15.0

7.6 

7.8 

1.0

Galvo 

Tg (sec)

0.75

.75 

100.0

.247 

85.

Type 

recording

Photo paper

--do — —— — 

--do — —— —

—do —— — —

—do —— —— - 

—do — —— —

Photo paper,

Magnification 

at T

0

200 K

200 K 

1.5 K

466 K 

457 K 

Uncalibrated 

--do —— —— —

Remarks

WWSSN; telemetered to the 

University of Arizona. 

Do. 

Do.

TUT .98

visible.

Pen and ink

Timing system: TUC uses a WWSSN standard system. TUO has a Standard Electric Co. pendulum clock. 

System response curves: TUC—see figure 1, p. 363. 

SHORT HISTORY

TUO was originally a USC&GS magnetic installation, having been moved to Tucson from Baldwin, Kans., in 1909. Original 

instrumentation consisted of two Bosch-Omori's (NS and EW). These were discontinued in 1925 when two Wood-Anderson 1 s (NS and 

EW) were installed. The Benioff was added in the 1940's.

TUC was started with the installation of the WWSSN system. The station is now telemetered to the University of Arizona.

38
GENERAL INFORMATION 

Operated by: 

Address:

University of Arizona

Department of Geosciences 

laboratory of Geophysics 

University of Arizona 

Tucson, AZ 85721

Telephone: 602-884-2417 

Address to obtain records:

As above. 

SITE INFORMATION

ARIZONA 

Tucson, AZ

Code Station name

latitude 

(deg N.)

longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

UOA University of Arizona—— 32.2331 110.9528 741 4/72 Spring 74 Alluvium.

INSTRUMENTATION

Seismometer

Code Type

__________________ Galvo Type Magnification

Component T (sec) T (sec) recording at T

o g o

UOA Sprengnether- NS,EW

Remarks

20.0 Pen and ink

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

UOA was operated sporadically as an instructional station.

39
ARIZONA 

Denver, CO

GENERAL INFORMATION

Operated by:

Address:

Telephone: 

Telex:

U.S. Geological Survey for 

the Bureau of Reclamation

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

303-234-3994 

45-509

Bureau of Reclamation 

Region 3 Office 

Boulder City, NY 89005

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

Prior to 1976:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code

BDA 

GCA 

PFA

Station name

Latitude 

(deg N.)

—— 36.0154

—— 36.9736

Longitude 

(deg W.)

114.7366 

111.5931 

114.0047

Elev 

(meters)

237 

1339 

417

Date 

opened

4/41 

8/60 

10/40

Date 

closed

1961 

Open 

6/52

Foundation; geologic age

Volcanic tuff. 

Sandstone .

Terrace gravel overlying fine playa 

silt with gypsum cement.

INSTRUMENTATION

Seismometer

Code

BDA 

GCA

PFA

Type

Benioff 4681A -----

Benioff 6102A -----

Component T (sec)

Z 1.0

Galvo Type Magnification „ , 

„, , -, .. ~, Remarks T (sec) recording at T

--- Photo paper --- --- 

--- Develocorder 150 K Telemetered to GLD.

--do —————— 150 K Do. 

--- 35-mm film --- ---

Timing system: Time added at GLD (TG-120 precise time). BDA used a Seth Thomas clock. 

System response curves: GCA--available with records. 

SHORT HISTORY

BDA was located in the Arizona abutment of Boulder Dam (Hoover Dam) in an abandoned grouting gallery approximately 10 km 

ENE of Boulder City, Nev. The Wood-Anderson instrument originally operated at BCN. BDA was used only as a check for local 

earthquakes.

GCA was established near the present Glen Canyon Dam in order to monitor seismicity of the area before and particularly 

after the filling of the reservoir. Telemetering began in 1976. Prior to that, the station recorded on 35-mm film.

PFA was located 5 km west of the lower entrance to the Grand Canyon. The Benioff equipment was installed in 1942, replacing two USGS-type vibration meters.

40
ARIZONA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(FS-AZ)

(GE-AZ)

(HR-AZ)

(JR-AZ)

(KG-AZ)

(KH-AZ)

(LG-AZ)

(NL-AZ)

(NL2AZ)

(PY-AZ)

(SF-AZ)

(SG-AZ)

(SN-AZ)

(SV-AZ)

(WM-AZ)

(WO-AZ)

Station name

Flagstaff ------------

Globe — — —— — — —— —

Heber —— —— — —— — ——

Jerome — - ————— -----

Kingman — ------------

Kohls Ranch- — - — ----

Long Valley----- - — —

Nazlini --------------

--do---- ——— ------ ---

Payson (ARY) ———— ——

Snow Flake —— - ———— --

Seligman-------------

Sunf lower- ---------- -

Springerville--------

Wi 11 iams-- -----------

Wins low-- ------------

Latitude 

(deg N.)

—— 35.0692

—— 33.7756

—— 34.6697

—— 34.8256

—— 35.6417

—— 34.4833

—— 34.4078

—— 35.9014

—— 35.8069

—— 34.2542

—— 34.4386

——— 35.6408

—— 33.8636

—— 34.1756

—— 35.4178

—— 34.8814

Longitude 

(deg W.)

111.3094

110.5281

110.7664

111.9903

113.9078

111.0342

111.5458

109.5694

109.6286

111.3269

110.5144

113.2608

111.6928

109.1469

112.2150

110.6208

Elev 

(meters)

1890

1475

1875

1311

1067

2286

1768

1768

1920

1516

1981

1676

884

2134

1920

1585

Date 

opened

10/14/61

2/27/66

4/09/64

7/10/64

3/30/64

4/19/63

4/10/68

4/02/64

4/02/64

3/31/64

2/10/65

1/26/67

12/03/61

4/06/64

3/29/64

11/25/61

12/12/61

4/01/64

Date 

closed

5/12/63

3/12/66

10/04/65

10/04/65

10/04/65

7/11/63

4/26/68

6/18/64

10/04/65

1/25/65

10/04/65

4/06/67

5/03/62

10/04/65

10/04/65

5/03/62

5/03/62

10/04/65

Foundation; geologic age

Limestone and sandstone; Paleozoic

Altered shale.

Limestone.

Do.

Granite.

Residual soil.

Tuff and basalt.

Clays tone.

Alluvium.

...

Limestone.

Sandy limestone.

Granite.

Sandstone.

Limestone.

Sandstone.

41
INSTRUMENTATION—Continued

ARIZONA—Continued 

Garland, TX

Seismometer Galvo Type Magnifi

Code

(FS-AZ),

(HR-AZ) ,

(KG-AZ),

(LG-AZ),

(NL2AZ),

(SN-AZ),

(WM-AZ),

Type

(GE-AZ),

(JR-AZ),

(KH-AZ),

(NL-AZ),

(SG-AZ),

(SV-AZ),

(WO-AZ): Benioff ——— -

Component T (sec) T (sec) recording at

V

• —— Z,NS,EW 1.0 —— Magnetic tape, (FS-AZ)

35-mm film. (GE-AZ)

(HR-AZ)

(JR-AZ)

(KH-AZ)

(LG-AZ)

(NL-AZ)

(NL2AZ)

(SG-AZ)

(SN-AZ)

(SV-AZ)

(WM-AZ)

(WO-AZ)

cation n . 

_ Remarks

o

: 180 K

: 350 K

: 400 K

: 250 K

: 100 K

: 250 K

: 260 K

: 350 K

: 440 K

: 200 K

: 145 K

: 360 K

: 310 K

Sprengnether---- Z,NS,EW

(FS-AZ) (2d oper.),

(KG-AZ) (2d oper.): Geotech S-13——— Z.NS.EW 

Geotech——————— Z,NS,EW

(PY-AZ): 

(SF-AZ):

Geotech S-13- 

Benioff———-

Z.NS.EW 

Z.NS.EW

20.0

1.0 

20.0

20.0 

1.0

Magnetic tape 

--do——————

-doPortable system. 

Do.

Do.

Magnetic tape, 

35-mm film.

(SF-AZ): 250 K

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

42
GENERAL INFORMATION

Operated by:

Address:

U.S. Geological Survey and

California Institute of Technology

U.S. Geological Survey 

Seismological Laboratory 

California Institute of Technology 

Pasadena, CA 91125

Telephone: 213-795-2956 

Address to obtain records:

As above.

ARIZONA 

Pasadena, CA

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BPK Black Peak——————————— 34.1247 114.2097

(FTM) Fortuna Mine————————— 32.5548 114.3335

(LGA) Laguna Mountains—————— 32.7597 114.4928

(SLU) San Luis———————————— 32.5017 114.7773 

(YMD) Yuma Desert—————————— 32.5547 114.5447

INSTRUMENTATION

_____________Seismometer_______________

Code Type Component T (sec)

o

All stations Mark L-4C————————— Z 1.0

504 4/74 11/09/76 Basaltic rocks; Quaternary. 

263 7/75 Open-- Gneiss; Mesozoic.

68 7/75 --do-- Nonmarine sediments; Quaternary or

Tertiary.

41 3/73 --do-- Alluvium; Quaternary.

76 7/75 —do— Nonmarine sediments; Quaternary.

Galvo 

Tg (sec)

Type Magnification 

recording at T

Remarks

0.062 Develocorder BPK: 12,000 K All magnifications at 

(FTM): 6000 K 0.071 sec. Tele- 

(LGA): 3000 K metered to Pasadena. 

(SLU): 24,000 K 

(YMD): 6000 K

Timing system: WWVB radio signal received and recorded as the top and bottom photographic traces. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

BPK was removed because of access-road maintenance costs.

CIT and the USGS publish frequent reports on the data collected through their several networks.
ARKANSAS 

Fayetteville, AR

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

University of Arkansas

Department of Geology 

University of Arkansas 

Fayetteville, AR 72701

501-575-3355

Address to obtain records:

As sbove. 

SITE INFORMATION

Code Station name

FAY --do ———————————— -

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date ,, . . , . 

,.„,. /j ,, •> / •> j T j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

- —— 36.0911 94.1911 404 1/52 7/69 Do.

Seismometer Galvo Type Magnification n __u_

Component T (sec) T (sec) recording at T

- ———— NS,EW 1.0 .2 —do ————— 50 K, 25 K, 

respectively

Timing system: IBM electrically-wound invar-pendulum type. Accuracy limits generally within 0.1 sec. 

System response curves: Available from station. 

SHORT HISTORY

The station was opened under the code FAY in January 1952. Owing to highway planning, the station was relocated in July 

1969, and the code name was changed to FAV.

A seismograph bulletin is published by the University of Arkansss on a biannual basis. Copies of the bulletin for previous 

years may be obtained from the Department of Geology upon request.

44
ARKANSAS 

Mountain Home, AR

GENERAL INFORMATION

Operated by: Elmer E. Rexin

Address: Elmer E. Rexin

Route 5, Kingswood Estates

P.O. Box 216

Mountain Home, AR 72653

Telephone: 501-425-3057 

Address to obtain records:

As above. 

SITE INFORMATION

„ , „ Latitude Longitude Elev Date Date ,, , . . ,

Code Station name /•..», \ fJf, \ , \ i -, j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed ° e °

(MHA) Mountain Home———————— 36.4056 92.3347 213 1/69 Open-- Cotter Formation; Ordovician.

INSTRUMENTATION

_____________Seismometer_____________ Galvo Type Magnification _ , 

Code Type Component T (sec) T (sec) recording at T

(MHA) Sprengnether—————-- Z 5.0 —— Pen and ink —— ——

Timing system: Manually checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

MHA is the avocation of the owner. Time is considered good to 5 sec.

45
ARKANSAS 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(BK-AR) 

(CW-AR)

(IK-AR) 

(MP-AR) 

(MY-AR) 

(MZ-AR) 

(PV-AR) 

(WR-AR)

Station name

Ink ———————————— -

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed

- ——— 35.3567 91.6450 122 7/06/62 7/11/62 

2/12/63 4/10/63

- ——— 35.1356 91.9778 152 11/15/61 12/16/61 

5/09/62 6/09/62

- ——— 34.6194 94.1025 305 11/10/62 12/13/62

- ——— 34.6017 93.1458 183 11/20/61 6/03/63

- ——— 35.3511 91.0797 61 7/16/62 8/03/62

- ——— 34.5586 93.6578 213 12/20/62 1/31/63

- ——— 34.9294 92.6700 213 6/15/62 6/28/62

- ——— 36.0583 91.2219 122 12/05/61 12/16/61

Foundation; geologic age

Sandstone; early Paleozoic.

INSTRUMENTATION

Code

(BK-AR) 

oper.) , 

(IK-AR) 

(PV-AR)

(MP-AR)

Type

, (1st 

(CW-AR), 

, (MY-AR),

, (MZ-AR): Benioff---

Seismometer Galvo Type

Component T (sec) T (sec) recording 

o g

35-mm film.

• ———— Z,NS,EW 1.0 —— —do ——--- — —

,«v-__-_ 7 WC ITU On n ___ __r1n----------

Magnification _ . 6 Remarks

o

(BK-AR): 150 K 

(CW-AR): 170 K 

(IK-AR): 220 K 

(MY-AR): 30 K 

(PV-AR): 210 K 

(WR-AR): 90 K

(MP-AR): 180 K 

(MZ-AR): 340 K
ARKANSAS--Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM progrsm began in 1960 ss part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

47
GENERAL INFORMATION 

Operated by: 

Address:

St. Louis University

Department of Earth & Atmospheric Sciences

St. Louis University

P.O. Box 8099, Laclede Station

St. Louis, MO 63156

Telephone: 314-535-3300 

Address to obtain records:

As above. 

SITE INFORMATION

ARKANSAS

St. Louis, MO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(HCI) Hatchie Coon Island——— 35.6950 90.3450

LRA Little Rock——————————— 34.7783 92.3517

PGA Paragould———————————— 36.0600 90.6200

POW Powhatan- ——————— ——— 36.1520 91.1850 

WLA Wittsburg Lake---------- 35.1860 90.7200

INSTRUMENTATION

_______________Seismometer______________ 

Code Type Component T (sec)

(HCI) Mark L-4C—————————— Z 1.0

LRA 1931-1954————————— NS.EW 2.5

Wood-Anderson.

1954-1960 Reef————— NS,EW 1.0 

1960-1967————————— Z 1.5

Wilson-Lamison. 

1960-1967————————— NS,EW 2.5

Wood-Anderson.

67 11/76 Open--

150 2/02/31 7/27/67

152 12/28/74 Open--

156 6/19/74 --do--

116 10/73 10/28/75

Alluvium (sandy clay). 

Sandstone; Ordovician.

Claiborne Group (clay-gravel); 

Eocene.

Everton Formation (limestone); 

Ordovician.

Jackson Group (cherty clay); 

Eocene.

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

PGA

POW 

WLA

Mark L-4CGeospace HS-10-1—---

1.0

1.0 

1.0

1.0 

1.0

Develocorder, 

magnetic tape.

Photo paper

Develocorder, 

magnetic tape.

1.0

--do —————— 

Photo paper

182 K

2.5 K

15 K 

50 K

2.5 K

238 K

1570 K 

50 K

Magnification at 10 Hz; 

telemetered to Saint 

Louis.

Magnification at 10 Hz; 

telemetered to Saint 

Louis.

Do.

48
ARKANSAS—Continued 

St. Louis, MO

Timing system: LRA used a Howard-Gaertner pendulum clock. WLA used a Sprengnether TS-100. All other stations have timing 

added in St. Louis.

System response curves: Available with records. 

SHORT HISTORY

LRA was founded as the third station in Saint Louis University's network. It ceased operation when St. John's Seminary 

was closed.

The other stations are part of the New Madrid network.

The University publishes the "Southeast Missouri Regional Seismic Network Quarterly Bulletin."

49
GENERAL INFORMATION 

Operated by: 

Address:

University of California, Berkeley

University of California 

Seismograph Station 

475 Earth Sciences Bldg. 

Berkeley, CA 94720

Telephone: 415-642-3977 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

Berkeley, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

ARC Arcata————————————— 40.8767 124.0750

BKS Byerly————————————— 37.8767 122.2350

BRK Berkeley———————————— 37.8733 122.2600

CLS Calistoga——————————— 38.6367 122.5850

CNC Concord (Diablo—————— 37.9667 122.0717 

	Valley).

FHC Fickle Hill—————————— 40.8017 123.9850

FRE Fresno————————————— 36.7683 119.7697

FRI Friant————————————— 36.9917 119.7083

GCC Granite Creek———————— 37.0300 121.9967

HRC Harris Ranch————————— 36.7650 121.4133

JAS Jamestown——————————— 37.9467 120.4383

LLA Llanada————————————— 36.6167 120.9433

MHC Mount Hamilton——————— 37.3417 121.6417 

	(Lick Observatory).

MIN Mineral————————————— 40.3450 121.6050

MLC Manzanita Lake——————— 40.5367 121.5617

PAC Palo Alto (Branner)——— 37.4167 122.1817

PCC Pilarcitos Creek—————— 37.5000 122.3817

PRC Point Reyes—————————— 38.0800 122.8667

PRI Priest————————————— 36.1417 120.6650

PRS Paraiso————————————— 36.3317 121.3700

59 2/27/48 Open276 6/08/62 — do—

81 1887 —do--

457 1961 12/21/64 

36 9/12/60 12/06/66 

610 12/10/68 Open-- 

88 11/28/35 3/02/71 

119 3/09/71 Open-- 

122 2/65 —do— 

228 3/17/66 7/11/66 

457 8/28/64 Open-- 

475 9/08/61 —do—

1282 4/24/1887 --do—

1495 1/02/39 —do—

1800 6/56 —do—

83 11/21/27 5/31/65 

91 4/02/65 Open-- 

404 9/09/61 12/21/64 

1187 9/15/61 Open— 

363 7/07/61 —doSandstone; Quaternary.

Claremont Shale (cherts and 

shales); Miocene.

Franciscan Formation (sandstone); 

Jurassic to Eocene.

Alluvium (Quaternary) overlying 

volcanic flows.

Alluvium overlying Franciscan 

Formation (sandstone).

Siltstone (Jurassic/Cretaceous) 

over Franciscan Formation 

(graywacke); Jurassic to Eocene.

Alluvium; Quaternary.

Alluvium (Quaternary) overlying 

granite.

Granite; Jurassic.

Alluvium; Pliocene.

Metamorphic rocks; pre-Cretaceous.

Alluvium (Quaternary) overlying 

sandstone.

Franciscan Formation (graywacke 

and greenstone); Jurassic to 

Cretaceous.

Volcanic debris; Pliocene.

Volcanic pyroclastic rocks; 

Quaternary.

Sandstone; Quaternary. 

Granodiorite; Jurassic. 

Alluvium underlain by granite. 

Altered serpentine; Jurassic. 

Granodiorite: Jurassic.

50
SITE INFORMATION—Continued

CALIFORNIA--Continued 

Berkeley, CA

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

SAO San Andreas Geological-- 36.7650 121.4450 

Observatory.

SCC Santa Cruz——————————— 37.0067 121.9967 

SFB San Francisco———————— 37.7667 122.4667

SHS Shasta (Shasta Dam)——— 40.6950 122.3883 

(USF) San Francisco———————— 37.7667 122.4500

VIN Vineyard———————————— 36.7500 121.3850

VIT Vineyard Telemeter———— 36.7500 121.3883

WDC Whiskeytown Dam——————— 40.5800 122.5400

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

ARC Wood-Anderson—————— SN,WE 0.8

BKS Benioff——————————— Z,NS,EW 1.0

Sprengnether——————— Z,NS,EW 15.0

--do————————————— N45°E 100.0

BRK Benioff——————————— Z 1.0

--do————————————— Z 1.0 

Press-Ewing—————— Z 15.0

--do————————————— Z,N45°E, 30.0 

N45°W

CLS Benioff—————————— Z 1.0

CNC --do- —— --- —— ------- z 1.0

FHC —do————————————— Z 1.0

FRE Sprengnether——————— Z,NS,EW -2.0

350

128

100

7/11/66 Open--

6/11/61 2/65

4/31 11/35

312 1942 5/30/64

100 11/35 12/17/64

330 2/03/59 3/09/66

360 5/31/61 2/10/65

300 3/08/73 Open-­

Granite; Jurassic/Cretaceous.

Sandstone; Pleistocene.

Franciscan Formation (sandstone); 

Jurassic to Eocene.

Metavolcanics; Devonian.

Franciscan Formation (sandstone); 

Jurassic to Eocene.

Alluvium (Quaternary) overlying 

weathered granite.

Dolomite (pre-Cretaceous) intruded 

by granite (Jurassic/Cretaceous).

Metavolcanics; Devonian.

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

0.75

100.0

300.0

.2

8.0

30.0

Photo paper

--do—————

--do—————

--do—————

2.8 K

25 K

3 K

230, 640

Develocorder 25 K

--do-------- Variable

--do—————— 1 K

Magnetic tape ---

FRI 

GCC 

HRC

JAS

Benioff--- —— -- ——— -

--do— —— —— — —— — —

_- do —————— ——— _ ——

--do—— ———— --- —— —

--do— —— —— —— —— ——

--do- ——— --- — —— — - 

Willmore-—----------

Z 

Z 

Z 

Z 

Z

Z.NS.EW 

N45°E

1.0 

1.0 

1.0 

1.0 

1.0

1.0 

3.0

.0 

.2 

.2 

.2 

.2

.75 

.2

Develocorder

--do—————— 

_- do —— — ——

Photo paper

- do—— —— -

Helicorder 

Develocorder

--do-----——

60 K 

58 K 

80 K

Z: 4.5 K

NS: 2.9 K

EW: 2.3 K

8 K 

64 K 

50 K 

25 K

WWSSN. 

Do.

Two instruments. Ultralong-period.

Broadband.

Telemetered to BRK. 

Do. 

Do.

Develocorder, 760 K

magnetic tape, 

--do———————— 250 K 

Magnetic tape ---

Telemetered to BRK.

Telemetered to BRK.

51
CALIFORNIA—Continued 

Berkeley, CA

INSTRUMENTATION—Continued

Seismometer

Code

LLA 

MHC

MIN

MLC 

PAC

PCC

PRC 

PRI

PRS

SAG

sec

SFB

SHS 

USF

VIN

VIT 

WDC

Timing system: 

System response 

SHORT HISTORY

Type

_. do —————————————

--do —————————————

—do —————————————

Sprengnether S-7000-- 

Sprengnether S-5007-- 

Sprengnether S-7000--

Component

Z 

Z

SN,EW 

N45°E

SN,EW 

Z

NS.EW

NS,EW 

Z

Z

Z 

Z

Z

Z 

Z 

Z,NS,EW 

Z

Z

NS,EW 

Z

Z,NS,EW

NS.EW 

Z

Z 

SN.WE 

Z,NS,EW

Z 

Z

WWSSN standard checked with WWVB. 

curves: BKS--see figure 1, p. 363.

Galvo

T (sec) T 

o g

1.0 0 

1.0

.8 

3.0

.8 

1.0

6.0

.8 

1.0

1.0

1.0 

1.0

1.0

1.0 

.2 20 

30.0 10 

.2 20

1.0

.8 

1.0

1.5

.8 

1.0

1.0 

.8 

2.0

1.0 

40.0

Others available

(sec)

.2 

.2

.2 

.4

.4 

.2

.2 

.2

.2

.2 

Hz 

Hz 

Hz

.2

.28 

.45

.28 

.2 

.2

.2

from

Type Magnification Remarks 

recording at T

Develocorder

Develocorder , 

magnetic tape. 

Photo paper 

Magnetic tape

Photo paper 

Develocorder

Smoked paper

Photo paper 

--do —————

Develocorder, 

magnetic tape.

Develocorder

Develocorder, 

magnetic tape.

— do ———————

--do ——————— 

--do ———————

--do ——————— 

magnetic tape

Develocorder 

Photo paper

--do —————— 

35-mm film

Photo paper 

--do —————

Develocorder

-- do —————————

Develocorder, 

magnetic tape.

Develocorder

Develocorder, 

magnetic tape.

station.

75 K 

85 K Telemetered to BRK. 

2.8 K

2.8 K 

60 K

250

2.8 K 

10 K

50 K Telemetered to BRK.

50 K Do. 

80 K Do.

75 K Do.

75 K Do. 

800 K

--- A microearthquake array 

of three instruments.

10 K

2.8 K 

10 K

50 K

7.8 K

36 K Do.

500 K Magnification at 1 sec, 

filtered. 

Broadband.

ARC and FHC were established by the University in cooperation with Humboldt State College. 

BKS was established as a WWSSN station at its inception in 1962. 

BRK and MHC are the oldest seismograph stations in North America.

CNC was established by Diablo Valley College in cooperation with the University. Total operational responsibility for the 

station was assumed by Diablo Valley College in 1966.

52
CALIFORNIA--Cont i nued 

Berkeley, CA 

SHORT HISTORY—Continued

FER was established by the University and then transferred to the City of Ferndale in 1962. (See California, City of 

Ferndale.)

FRE operated until 1971, with a hiatus from December 30, 1966, to March 30, 1967, and then was moved to station FRI.

FRI was established in cooperation with the U.S. Bureau of Reclamation.

GCC was established in cooperation with Richard E. Randolph.

JAS was established and is run in cooperation with the California Department of Water Resources.

MIN, established in 1939 by the University and Lassen Volcanic National Park, is in nearly the same location as the site 

established in 1926 by the USGS at the Lassen Volcano Observatory. This earlier station used a seismometer made by the Hawaiian 

Volcano Observatory.

MLC was established in cooperation with the National Park Service. It is in service only during the summer months.

ORV, owned and operated by the California Department of Water Resources, is also recorded at the University.

PAC was established by Stanford University in cooperation with the University of California at the Branner Seismograph 

Station. The University of California assumed total operation of the station 1947.

PRC and PRI were established in cooperation with the Federal Aviation Agency.

SCC was established in cooperation with the City of Santa Cruz.

SFB was established in cooperation with the California Academy of Sciences. It was later moved to USF. \

SHS was established by the U.S. Bureau of Reclamation and transferred to the University in 1952.

VIN and VIT were established in cooperation with W. A. Taylor and Co.

YER was established in cooperation with the City of Yerington.

53
GENERAL INFORMATION

Operated by:

Address:

Telephone:

Tera Corporation for

Pacific Gas and Electric

Tera Corporation 

2118 Milvia St. 

Berkeley, CA 94704

415-845-5200

Address to obtain records:

Stuart W. Smith 

Geophysics Program 

202 ATG Building, AK-50 

University of Washington 

Seattle, WA 98195

CALIFORNIA 

Berkeley, CA

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev 

(meters)

Date Date 

opened closed Foundation; geologic age

(BRY) Barry Ridge—————————— 40.7250 123.9739 790

(BZD) Buzzard Peak————————— 40.5297 124.2189 427

(DIA) Diamond Ranch———————— 40.4139 123.7575 534

(EKR) Elk River——————————— 40.6953 124.1394 49

(FKH) Fickle Hill————————— 40.7908 123.9744 633

(FOX) Fox Creek——————————— 40.5211 123.9922 113

(GWS) Gas Wells——————————— 40.6206 124.1314 221

(HAH) Hanson Hill—————————— 40.5608 123.8139 1092

(HRS) Horse Mountain——————— 40.8750 123.7322 1510

(JBY) Jacoby Creek————————— 40.8167 124.0278 49

(LOL) Loleta————————————— 40.6689 124.2286 122

(MMR) Monument Ridge——————— 40.4233 124.0975 967

(MVR) Mountain View Ranch——— 40.6764 123.8614 461

(PTK) Port Kenyon————————— 40.6044 124.2744 4

(RYN) Ryan Slough—————————— 40.7856 124.1197 6

(TIT) Squaw Tit——————————— 41.0739 123.9803 642

WKC Walker Ridge————————— 40.3900 124.2900 976

6/18/74 Open—

1/15/75 —do—

6/18/74 —do—

6/20/74 

6/02/74

6/19/74 

6/02/74 

5/31/74

— do—

—-do —

—do—

—do—

—do—

8/06/74 —do—

8/13/74 — do—

6/20/74 —do—

7/19/74 —do—

6/18/74 —do—

6/20/74 — do—

8/13/74 —do—

8/15/74 —do—

10/28/74 —do-­

Franciscan Formation; 

Eocene.

Jurassic to

Eel River sediments; Tertiary.

Franciscan Formation; Jurassic to 

Eocene.

Eel River sediments; Tertiary.

Franciscan Formation; Jurassic to 

Eocene.

Eel River sediments; Tertiary. 

Do.

Franciscan Formation; 

Eocene.

Do. 

Do. 

Eel River sediments;

Franciscan Formation; 

Eocene.

Jurassic to

Tertiary. 

Jurassic to

Do.

Eel River sediments; Tertiary. 

Do.

Franciscan Formation; 

Eocene.

Do.

Jurassic to

54
CALIFORNIA—Continued 

Berkeley, CA 

INSTRUMENTATION

_____________Seismometer_____________ Galvo Type Magnification R , 

Code Type Component T (sec) T (sec) recording at T

All stations Mark L-4C————————— Z 1.0 —— Film Variable Telemetered to Eureka,

Calif.

Timing system: Time-code generator with WWVB recorded directly. 

System response curves: See figure 11, p. 366. 

SHORT HISTORY

These stations were established to help determine which faults are active in the area.

55
GENERAL INFORMATION 

Operated by: 

Address:

California State University, Chico

Department of Geological and Physical Sciences 

California State University 

Chico, CA 95926

Telephone: 916-895-5262 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

Chico, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CCO Chico- 39.0642 121.0094 60 2/23/72 Open-­ Alluvium; Quaternary.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

CCO Geotech SL-220- Long Visible 4 K

Timing system: Geotech TG-110.

System response curves: Not available.

56
GENERAL INORMATION 

Operated by: 

Address:

Telephone:

City of Ferndale

Ferndale Seismograph Station 

c/o Smith and Scalvini 

425 Main Street 

Ferndale, CA 95536

707-786-4575

Address to obtain records:

Records since 1965: 

As above.

SITE INFORMATION

CALIFORNIA 

Ferndale, CA

Records before 1962:

Seismograph Station 

University of California 

475 Earth Sciences Bldg. 

Berkeley, CA 94720

Code

TTFR

„, , . Latitude Station name ,, ., , (deg N.)

TTo r-n H Q 1 a -------_________ /. fl £ 7 £ 7

Longitude 

(deg W.)

1 O /. 9 f, 1 7

Elev 

(meters)

i c

Date 

opened

1 /-5Q

Date 

closed Foundation; geologic age

.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

FER Bosch-Omori- NS.EW 10-15 Smoked paper 50

Timing system: Weight-powered timepiece. 

System response curves: Not available. 

SHORT HISTORY

FER was established by the University of California, Berkeley, in 1933. It was given to the City of Ferndale in 1962 

and is now used as an educational museum piece.

57
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

College of Marin

Geology Department 

College of Marin 

Kentfield, CA 94940

415-454-3962 ext. 291

CALIFORNIA 

Kentfield, CA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

RFC Kentfield- 37.9550 122.5528 1/66 Open-- Franciscan Formation (sandstone); 

Jurassic to Eocene.

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

Remarks

RFC UED Ranger SD-214- 0.981 Visible 35 K Magnification at 0.25 sec.

Timing system: Sprengnether TS-100 synchronized with WWV. 

System response curves: Available from station. 

SHORT HISTORY

RFC was opened with the above-mentioned equipment.

58
GENERAL INFORMATION 

Operated by:

Address:

Lawrence Livermore Laboratory 

of the University of California

Seismic Research Group, L-42 

Lawrence Livermore Laboratory 

P.O. Box 808 

Livermore, CA 94550

Telephone: 415-447-1100 ext. 3475 

Telex: 34-6407 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

Livermore, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

LAC Landers- 34.3898 116.4115 792 8/68 Open- Gneiss; Precambrian.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

Tg (sec)

Type Magnification Remarks 

recording at T

LAC Sprengnether-

-do20.0

NS,EW 40.0

Magnetic tape Variable

—do-- — -—— --do- — -

Maximum magnification 

100 K. Telemetered to 

Livermore and Menlo 

Park. 

Do.

Timing system: IRIG time codes B and C synchronized to WWV. 

System response curves: See figure 5, p. 364. 

SHORT HISTORY

The principal interest of the Laboratory is to monitor nuclear explosions. LAC is located underground in a mine shaft.

59
CALIFORNIA

Los Angeles, CA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

City of Los Angeles

Griffith Observatory and Planetarium 

2800 E. Observatory Road 

Los Angeles, CA 90027

213-664-1181

Code

GOC

0 . . . Latitude Station name ,, „ x (deg N.)

Griffith Observatory —— 34.1130

Longitude 

(deg W.)

118.3017

Elev 

(meters)

348

Date 

opened

6/65

Date 

closed

Open--

Foundation; geologic age

Quartz monzonite; Cretaceous.

INSTRUMENTATION

Seismometer

Code

Galvo Type Magnification

Type Component T (sec) T (sec) recording at Remarks

GOC Benioff 1051- 1.0 0.2 Visible 300 K

Timing system: Crystal-controlled oscillator synchronized with WWVB. 

System response curves: Not available. 

SHORT HISTORY

GOC is operated as a public demonstration.

60
GENERAL INFORMATION

CALIFORNIA 

Los Angeles, CA

Operated by: University of Southern California

Address: Geophysical Laboratory 

855 W. 37th Street 

University of Southern California 

Los Angeles, CA 90007

Telephone: 213-746-6124 

Address to obtain records: 

As above. 

SITE INFORMATION

Code

(BHR)

(DHS)

(DHT)

(FMA)

(GFP)

(HCM)

(IPC)

(JBF)

(LCL)

(LCM)

(LNA)

(TPR)

use

Station name

Baldwin Hills —— ------

Reservoir.

Downhole Seismometer—--

Baldwin Hills.

Downhole Seismometer— —

Terminal Island.

Fort MacArthur — - —— -- —

Griffith Park —— — — — —

Holy Cross Mausoleum —— -

ing-Lewooci *arK p

Cemtery.

Junior Blind---- — - -----

Foundation.

Rancho Los Cerritos -----

Los Angeles County- -----

Museum.

Air Station. 

Recreation Park — ----- —

Trippett Ranch ——— ———

Los Angeles (UniversityLatitude 

(deg N.)

34.0085

34.0175

33.7510

33.7737

33.7075

33.0178

33.9940

33.9707

33.9930

33.8333

34.0178

34.7777

34.0889

34.0178

Longitude 

(deg W.)

118.3620

118.3855

118.2208

118 . 2167

118.2912

118.3098

118.3830

118.3345

118.3447

118.2068

118.2870

118.0545

1 1 ft 1 '}'}'} I lo . I J j j

118.5867

118.2870

Elev 

(meters)

149

-1425

-856

1

14

245

56

59

79

8

50

1 

4

380

50

Date 

opened

2/71

3/73

3/76

o 770 Qf 1 Z

5/72

4/75

2/71

3/71

2/71

8/72

8/71

5/72

2/71 

7/75

2/71

Date 

closed

Open—

— do—

— do—

3/74 

Open—

— do—

— do —

— do—

4/75

Open—

— do—

— do—

--do—

— do—

8/71

Foundation; geologic age

Palos Verdes Sand; Pleistocene.

Pliocene.

Do.

Late Pleistocene.

Monterey Shale; Miocene and Pliocene.

Granite.

Late Pleistocene.

Early Pleistocene.

Late Pleistocene.

Early Pleistocene.

Alluvium; Quaternary.

Do.

Late P leis tocene .

Miocene.

Alluvium; Quaternary.

of Southern Calif.).

61
CAIIFORNIA—Continued 

los Angeles, CA

INSTRUMENTATION

Code

Most stations

DHS 

TPR

Type

Mark L-4C ————— -

Seismometer

Component To (sec)

1.0

6.0 

1.0

Galvo Type Magnification 

T (sec) recording at TQ

—— Magnetic tape, 10 K Magnification at 1 sec. 

strip chart.

—do ——————— 100 K 

--do ———————

Timing system: Eldorado 1710 time-code generator checked with WWV. 

System response curves: Available from station. 

SHORT HISTORY

The seismotectonic study of the Los Angeles Basin and its offshore area includes seismic-hazard assessment, effect of 

water-injection into oil fields on earthquake occurrence, and detection of precursory phenomena.

62
GENERAL INFORMATION 

Operated by: 

Address:

University of California, Los Angeles

Lookout Mountain Observatory

Institute of Geophysics and Planetary Physics

University of California

Los Angeles, CA 90024

Telephone: 213-825-3123 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA

Los Angeles, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

LMO Lookout MountainObservatory.

LMS -do34.1086 118.3878

34.0692 118.4403

392 2/12/71 6/03/73 

131 4/11/74 Terrace deposits and Palos Verdes 

Sand; Pleistocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

Both stations Sprengnether S-5007V-- 15.0 100.0 Photo paper 750

Timing system: Sprengnether TS-100 crystal chronometer. 

System response curves: Not available. 

SHORT HISTORY

LMO was the original station; it operated until 1973 when it was moved to the current location, LMS. Two other 

instruments are operating at LMS: a LaCoste-Romberg earth-tide gravimeter and a Sprengnether horizontal pendulum, both 

serving as seismic instruments.

63
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Center of Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2822 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

Menlo Park, CA

Code

New Alternate Local Station name

Latitude 

(deg N.)

Longitude Elev Date 

(deg W.) (meters) opened

Date 

closed

Foundation; 

geologic age

AARM

ABJM

ABRM 

ADWM 

AFDM 

AFHM 

AFRM 

AGIM 

AHDM 

AHRM 

ALNM 

AODM 

AOHM 

APRM 

ARJM 

ARRM 

ARWM 

ASRM 

AVRM 

BAVM 

BBGM 

BBNM 

BCGM 

BCHM

64

ADC

SET

(AARS) 

(ABAB)

(ABJS)

(ABP)

(ABRS)

(ADWD)

(AFHD)

(AFHS)

(AFID)

(AGRI)

(AHDR)

(AHFR)

(ALIN)

(AOTD)

(AOHO)

(APHR)

(ARWJ)

(ARRA)

(ARPW)

(ASHR)

(AVRS)

(ANV)

(BGM)

(BEN)

(CNR)

(BCH)

Airport Road- 39.2762

Bureau of Reclamation—— 38.8793 

Building.

Bob Jauregui Ranch------- 39.1653

Abalone Point--- ——— -—— 37.9392

Brophy Road——-——————— 39.1352

Drytown Water District-— 38.4392

Forest Hill Divide————— 38.9448

Forest Hill Site—————— 39.0418

Fiddyment Ranch——————— 38.7923

Gold Rush Inn————————— 38.8447

Hacienda Drive———————— 39.0483

Harold F. Ross———————— 38.8543

Lincoln—————————————— 38.9297

Outingdale——————————— 38.6148

Oregon House————————-- 39.3753

Poppy Hill Road——————— 38.8770

Robert W. Jensen--————— 38.6865

Rickey Ranch————————— 38.7653

Richard P. Wilkes—————— 38.9563

Slough House Road—————— 38.4977

Valley Road Site——————— 39.0248

Antelope Valley—————— 37.6458

Big Mountain————————— 36.5913

San Benito----- —— ———— - 36.5100

Cienega Road----------—— 36.7092

Black Canyon North------- 36.0543

121.0255

121.0675

121.1912

122.7588

121.4868

120.8482

120.9683

120.7913

121.3485

120.9813

121.0765

121.0705

121.2878

120.7285

121.2560

121.2172

120.9563

121.1718

121.1622

121.2048

121.2680

121.0293

121.0253

121.0755

121.3433

117.7282

930

420

457

140

24

251

524

1064

31

305

483

354

54

520

457

133

460

127

320

52

91

620

1216

448

305

1265

7/20/76 Open——

10/29/76 2/14/77

7/27/76 Open——

11/04/71 10/31/74

2/14/77 Open——

7/21/76 --do——

2/72 --do——

7/20/76 —do——

12/02/76 —do——

1/28/76 --do——

10/28/76 --do——

1/29/76 —do——

12/02/76 —do—-

10/19/76 —do—-

2/14/77 —do——

7/15/76 —do—-

12/02/76 —do——

12/02/76 --do—-

1/29/76 

7/21/76 

7/15/76 

7/02/75 

3/03/72 

1/28/71 

5/29/69 

9/26/75

—do——

--do—-

--do——

—do——

—do——

—do——

--do——

--do——
SITE INFORMATION—Continued

CALIFORNIA—Continued 

Menlo Park, CA

Code

New Alternate Local Station name

Latitude 

(deg N.)

Longitude Elev Date 

(deg W.) (meters) opened

Date 

closed

Foundation; 

geologic age

BEHM EKH 

BEMM EMT

BHSM

BJCM JHC

BJOM

BLRM

BMCM

BMHM

BMSM

BPCM 

BPFM 

BPIM 

BPPM 

BRMM

BRVM 

BSBM 

BSCM 

BSGM 

BSLM 

BSRM 

BVLM

PNC

LRV

SHG

BVL

BVYM

CACM

CADM ADR

CAIM AGC

CALM CVR

CAOM ARN

CBHM

CBRM BGC

(ELK) Elkhorn Ranch- 

(EMM) Emmet——————-

(BGU) 

(HST) 

(JHC) 

(JON) 

(LWR) 

(MCP) 

(MTH) 

(MRS) 

(BUT) 

(PNQ) 

(PFP) 

(PIN) 

(PNP) 

(RBM) 

(BRO) 

(LRV) 

(SWB) 

(STQ) 

(SHG) 

(SLV) 

(SRQ) 

(BVL)

(VYD) 

(ACH) 

(AND) 

(ANG) 

(CAL) 

(ARN) 

(CBH) 

(BOL)

Bear Gulch Road------

Hastings State Park-­ 

Johnson Canyon———- 

Mt. Johnson—- — —— - 

Lewis Ranch---——— - 

McPhails Peak------

Mt. Harlan----------

Mercey Hot Springs — - 

Black Mountain— — — - 

Pine Canyon-——-----

Pfieffer Point-------

Pinnacles—-—-----—

Pinyon Peak——------

Rolling Bench Mark- — 

Mt. Brow—————-----

Little Rabbit ValleySwanson's Bluff———- 

Stone Canyon---——--- 

Shirt Tail Gulch-----

Silva Ranch——— — --

Salinas Radio Site- — 

Bear Valley——---- —

Vineyard--——---- 

Antioch- — —— -__. 

Anderson Dam--—- 

Angel Island- — -- 

Calaveras- —-- — 

Arnold Ranch——- 

Coso Basin NorthBollinger Road—-

36.6647

36.6613

37.3423

36.3558

36.5470

36.6283

36.6660

36.6567

36.6863

36.6580

37.3158

36.5650

36.2300

36.4900

36.1687

36.8345

38.0080

36.4243

36.7378

36.6330

36.4138

36.7755

36.6675

36.5752

36.7462

36.9762

37.1623

37.8613

37.4512

37.3493

35.9882

37.8162

121.1742

121.0960

122.3385

121.5398

121.3922

121.3133

121.2727

121.3652

121.4133

120.7937

122.1638

121.6358

121.7717

121.1685

121.3780

120.8237

120.4153

121.0180

121.2868

121.2342

121.2537

121.3493

121.5193

121.1890

121.4182

121.7603

121.6242

122.4295

121.7992

121.5327

117.7500

122.0620

342

488

158

646

207

232

1022

811

769

170

268

349

329

1591

372

387

555

398

357

192

155

396

510

753

74

244

223

265

628

890

610

2/01/71 Open—— 

8/14/70 --do—-

3/01/70 11/02/71

9/04/75 Open—-

6/18/69

1/31/74

2/15/73

1/26/75

1/29/75

—do——

—do——

—do——

—do——

—do—— 

12/06/73 —do—— 

10/27/66 9/23/68 

2/14/76 Open—— 

12/18/73 —do—— 

7/03/75 —do—— 

12/19/73 --do—— 

12/03/73 --do—— 

4/19/72 7/12/76 

11/26/69 Open—— 

6/25/75 —do- — 

10/06/76 —do---

6/18/69 

7/16/75 

3/09/77 

9/03/70

--do——

-do——

--do——

--do——

12/11/75 --do—-

10/26/73 —do—-

8/25/67 --do---

8/08/69 --do---

10/19/67 —do——

10/19/67 —do——

9/26/75 —do——

8/23/69 —do——

Franciscan Formation 

(limestone); Jurassic 

to Eocene.

Granite; Mesozoic.

Granite; Mesozoic. 

Do. 

Do.

Marine sediment; 

Miocene.

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do.

65
SITE INFORMATION--Continued

CALIFORNIA—ContinuedMenlo Park, CA

New

Code

Alternate Local

Latitude i name , ,. (deg N.)Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed

Foundation; 

geologic age

CBWM 

CCNM 

CCOM 

CCYM 

CDOM 

CDSM 

CDUM

CMCM 

CMHM 

CMJM 

CMOM 

CMRM 

CNCM 

CPLM 

CPTM 

CRAM

CRPM 

CSCM 

CSHM

CSSM

BKC 

CYC 

COE

DOO 

DUC

CFWM 

CGSM 

CLCM LKC

MHR 

MSJ 

MTC 

MNR

PLC

CRC

SVC 

CSH

DKNM 

DTEM

CYH 

DIR

EGR

(BWR) 

(CCQ) 

(COE) 

(CYO) 

(DOO) 

(DSR) 

(DUR)

(CFW) 

(CGS) 

(LCH) 

(CLO) 

(MIL) 

(MHR) 

(MSJ) 

(MOR) 

(MNR) 

(NCR) 

(PAL) 

(CPT) 

(SRA) 

(CRK) 

(RUS) 

(SVC) 

(CSH)

(CSS) 

(CCR) 

(CYH) 

(DIR) 

(DKN) 

(DTE) 

(EGR)

Brookwood ReservoirCrow Canyon Road—-- 

Coe Ranch—---------

Coyote Hills —------

Doolan Road—------

Don Santos Ranch—-- 

Durate Ranch—------

Cactus Flat West-- — - 

China Gardens South-­ 

Lake Chabot—— —- —- 

Calero Reservoir—— - 

Mills College—————- 

Mt. Hamilton Road- — - 

Mission San Jose-- —- 

Morgan Territory-—-- 

Mines Road------—---

Norris Canyon Road—- 

Palomares------------

Cactus Peak West—— - 

San Ramon— —--------

Castle Rock——————— 

Russellman Park------

Silver Creek----—---

California State- — • 

College, Hayward.

Coso Hotspring--—--- 

Crow Canyon Road----- 

Coyote Hills ———— — 

Diamond Ranch----—-- 

Devils Kitchen NorthDunmovintown East—— 

Empire Grade Road——

37.9242

37.7915

37.2577

38.5517

37.7300

37.9663

38.0297

36.2083

36.1900

37.7380

37.1908

37.7813

37.3595

37.5208

37.8113

37.5947

37.7560

37.6313

36.0710

37.7672

37.2417

37.9125

37.2852

37.6575

36.0272

37.7917

37.5590

36.3363

36.0510

36.0975

37.0352

122.1067

121.9482

121.6725

122.0908

121.8353

122.2528

122.0008

117.9037

117.6237

122.0638

121.7652

122.1758

121.7563

121.8705

121.8025

121.6370

121.9900

121.9562

117.8498

121.9375

122.1303

121.9055

121.7725

122.0533

117.7673

121.9500

122.0937

120.3763

117.8088

117.9258

122.1042

221

219

366

67

198

109

168

1384

1689

312

230

90

518

498

792

500

306

463

1494

171

607

331

128

170

1170

207

38

496

1347

1152

442

It/28/71 Open--- Marine sediment; Miocene

2/05/76 --do——

10/03/67 —do——

5/01/75 --do——

7/29/70 --do——

11/15/73 --do——

4/28/71 --do——

9/26/75 --do——

9/26/75 --do——

11/21/72 --do——

11/68 10/16/68

7/20/71 Open——

3/04/69 --do——

7/01/72 --do——

4/17/69 —do——

4/17/69 —do——

9/02/76 --do——

6/27/69 —do——

9/26/75 —do——

9/02/76 --do——

3/01/66 6/01/77

9/18/70 Open——

6/10/67 --do——

1972 —do——

9/26/75 —do——

7/29/70 12/31/75

12/15/66 4/29/75

11/07/73 6/16/75

9/25/75 Open—

9/26/75 —do——

3/04/69 4/27/76

Do. 

Do. 

Do. 

Do. 

Do.

Volcanics —rhyolite to 

andesite, pyroclastics; Pliocene.

66
CALIFORNIA—Continued 

Menlo Park, CA

SITE INFORMATION—Continued

Code

New Alternate

——

——

GAFM

GAXM

GBGM

GBOM

GCMM

GCVM

GDCM

GGLM

GGPM

GHCM

GHGM

GHLM

GMCM

GMKM

GMOM

GPMM

GRMM

GRTM

GSGM

GSMM

GSNM

GSSM SKG

HAZM ANZ

HBTM

HCAM CDC

HCBM CBC

HCC

HCOM

HCRM CSR

HCZM

Local

(FOR)

(FWL)

(AAF)

(ALX)

(BGG)

(BKO)

(CMT)

(CVD)

(DRY)

(GLV)

(GYP)

(HOC)

(HOG)

(HLS)

(MCL)

(MKI)

(MOF)

(PNM)

(RDM)

(RTM)

(SGM)

(SCR)

(SNO)

(SKG)

(ANZ)

(BTT)

(CAN)

(CBC)

(HCC)

(CCC)

(CHR)

(CZD)

Forsyt he — ------------

Fowler Lookout- —— — —

Point Arena AFB ——— —

Alexander Valley-- —— -

Boggs Mountain- —— — -

Black Oak ——————————

Cobb Mountain — — ———

Clove rdale— - — — — -—

Dry Creek--- — --------

Glenview- —— - — --- — --

Geyser Peak — ---------

House Creek —— -- — - ——

Hog Mountain —————— —

Highland Springs —— ——

McLaughlin Ranch-- ——

Mt. Konoctai— — ------

Moffitt Ranch —— -- ———

Pine Mountain-- — -----

Round Mountain — ——— -

Round Top Mountain——

Seigler Mountain- — — -

Socrates Mine — -------

Snow Mountain- — -- — —

Skaggs Springs--- — — -

Anzar Road- —————— —

San Juan Bautista-— —

Canada Road-------- — -

Chamberlin Ranch-- — —

Holy Cross---- — -- — —

Corn Cob Canyon —————

Chase Ranch- — —— - — —

Cordoza Dairy —— - — - —

Latitude

(deg N.)

—— 36.7910

—— 38.0195

—— 38.8932

—— 38.7108

—— 38.8140

—— 38.8243

—— 38.8058

—— 38.7690

—— 38.7672

—— 38.8967

—— 38.7647

—— 38.6060

—— 39.1283

—— 39.0405

—— 38.7927

—— 38.9695

—— 38.7102

—— 38.8475

—— 38.0205

—— 38.9387

—— 38.8667

—— 38.7692

—— 38.9405

—— 38.7020

—— 36.8847

—— 36.8502

—— 37.0253

—— 36.9313

—— 36.9814

—— 36.8865

—— 36.9588

—— 36.9090

Longitude

(deg W.)

121.4547

120.5833

123.5380

122.7550

122.6793

122.8428

122.7552

123.0148

123.2395

122.7763

122.8442

123.1968

122.8245

123.0187

123.1300

122.7870

123.1432

122.9453

122.5843

122.6697

122.7100

122.7812

123.1917

123.0135

121.5909

121.5507

121.4837

121.6605

121.7225

121.7033

121.5847

121.8003

Elev

(meters)

433

880

710

379

1125

879

1286

150

772

893

1054

518

903

956

439

906

802

762

469

619

...

1017

870

282

122

98

332

219

159

104

241

30

Date

opened

9/25/67

4/19/72

1/22/75

9/21/73

6/26/75

6/20/75

4/23/75

5/07/75

5/07/75

4/18/75

4/18/75

5/07/75

4/18/75

6/75

5/07/75

4/18/75

5/07/75

9/21/73

6/26/75

6/26/75

7/02/74

7/18/75

6/20/75

1/22/75

6/29/67

6/05/75

10/13/67

1969

5/02/67

11/19/75

10/05/67

11/13/75

Date Foundation;

closed geologic age

4/27/71

7/12/76

2/04/75

Open--- ---

—do ——

_- do ——

—do ——

--do ———

--do ——

--do ———

--do ——

--do ——

--do ——

—— do ———

.-do ———

--do ———

—do ——

--do ——

—do ——

--do ——

--do ——

--do ———

—— do ———

--do ———

—— do ———

--do ——

--do —— ,

—— do ———

10/12/75 Marine sediment; middle

Miocene.

Open- —

--do ——

—do ——

67
CALIFORNIA—Continued 

Menlo Park, CA

SITE INFORMATION—Continued

New

HDLM

HFEM

HFHM

HFPM

HGSM

HGWM

HJGM

HJSM

HKRM

HLTM

HMOM

HORM

Code

Alternate

DIL

SFL

——

FRP

GHS

——

——

——

——

LTR

MTR

OCR

Local

(DIL)

(FEL)

(FTH)

(FRP)

(GHS)

(GRW)

(SJG)

(JSR)

(KNR)

(LTR)

(MON)

(OCR)

Station name

Billion Ranch- —— -- — - ——

San Felipe— — ---- — — — -

Flint Hills ——————————

Fremont Peak State —————

Park.

Gilroy Hot Springs----- —

Gilroy West- ———— —— -- —

San Juan Grade —— —— -- ——

John Smith Road ————— — -

Kincaid Ranch —————— ——

Lone Tree Road ————————

Monterey— -- ——————— - —

O'Connell Ranch ———————

Latitude 

(deg N.)

36.8353

36.9833

36.8882

36.7537

37.0958

37.0170

36.7980

36.8165

36.9017

36.8845

36.6117

36.9172

Longitude 

(deg W.)

121.

121.

121.

121.

121.

121.

121.

121.

121.

121.

121.

121.

6440

4015

4688

4905

4472

6532

5738

2987

4260

3082

9162

5077

Elev 

(meters)

204

323

101

705

778

131

171

215

66

183

0

98

Date 

opened

8/09/67

10/14/71

12/10/75

9/02/70

9/03/71

10/02/75

6/21/67

6/75

7/03/75

8/17/70

11/27/70

6/26/67

Date 

closed

Open ——

—do ——

—do ——

--do ——

—do ——

—do ——

—do ——

—do ——

—do ——

—do ——

—do ——

—do ——

Foundation; 

geologic age

——

——

——

Metamorphic rock;

Precambrian.

——

——

——

——

——

Marine sediment; Late

Cretaceous.

Granite; Mesozoic.

Nonmarine terrace

deposits; Quaternary.

HPHM

HPLM

HPRM

HQRM

PKH

PCL

PKC

QSR

(PKH)

(PCL)

(PMR)

(QSR)

Parkhill ————————————

Pacheco Lake ——————————

Peckham Road ——————————

Quien Sabe Road--- —— ——

36.8563

37.0522

36.9532

36.8337

121.

121.

121.

117.

4062

2900

6950

2127

122

152

94

536

8/17/70

5/10/68

6/23/67

5/29/69

—do ——

—do ——

—do ——

—do ——

——

——

——

Volcanic — rhyolite to

basalt, pyroclastics;

HSFM

HSLM

HWSM

JALM

JBCM

JBGM

JBLM

JBMM

JBZM

JCBM

JECM

JEGM

JHLM

JLTM

——

——

——

AMC

——

BGH

——

——

——

CBO

EUC

——

——

LTW

(STF)

(SL8)

(HWS)

(ALM)

(BCR)

(BGH)

(CBL)

(BAM)

(BUZ)

(CBO)

(EUC)

(ELG)

(HLM)

(LTW)

Saint Francis Retreat — —

San Luis Dam —— ------- ——

Haiwee Spring South — ----

Almaden- — - —— ———— ----

Bear Creek Road ———————

Bear Gulch ———————————

Camp Ben Lomond- ——————

Black Mountain-- ——————

Buzzard Lagoon Road — - — -

Chesbro Reservoir- — --- —

Eureka Canyon ——— — - —— -

El Granada —————— —— ——

Holstrom Ranch ——————— -

Los Trancos Woods ——————

36.8120

37.0802

36.1050

37.1583

37.1603

37.3420

37.1278

37.3182

37.0178

37.1118

37.0507

37.5140

37.1093

37.3537

121.

121.

117.

121.

122.

122.

122.

122.

121.

121.

121.

122.

121.

122.

4995

0942

7607

8470

0262

3390

1663

1527

7858

6888

8093

4623

8325

2042

340

122

1436

244

660

158

792

820

213

192

438

202

908

270

11/13/75

3/02/74

9/26/75

10/16/68

5/21/69

11/02/71

4/27/76

2/24/75

10/07/75

8/24/67

5/28/69

2/10/75

10/02/75

12/15/66

--do ——

—do ——

—do ——

—do ——

--do ——

—do ——

—do ——

—do ——

—do ——

—do ——

—do ——

--do ——

—do ——

—do ——

Miocene.

——

——

——

——

——

——

——

——

——

Franciscan Formation

Jurassic to Eocene

——

——

——

Franciscan Formation

.

j

Jurassic to Eocene.

68
SITE INFORMATION--Continued

CALIFORNIA—Continued 

Menlo Park, CA

New

Code

Alternate Local

Latitude i name ,, ,. -. (deg N. )Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed

Foundation; 

geologic age

JLXM 

JMGM 

JPLM 

JPPM 

JPRM 

JPSM 

JRGM 

JRRM 

JRWM 

JSAM

JSCM 

JSFM 

JSGM

JSJM 

JSMM 

JSSM 

JSTM 

JTGM 

JUCM

JWSM 

LCFM

LMZM 

LRDM 

LSLM

MBFM 

MCHM

MCSM 

MCUM

LXR 

MGA 

PEV

PSD

SAC

SEC 

SFT 

SGC

SJH 

SOS

WDS 

LAS

CRH

(LEX) 

(MGA) 

(PLV) 

(POR) 

(PRO) 

(PES) 

(RGR) 

(RDR) 

(JRW) 

(SAC)

(STV) 

(SFT) 

(SGC)

(STJ) 

(SAW) 

(SOS) 

(SNT) 

(TGR) 

(UCS)

(WDS) 

(LAS) 

(CCF) 

(LHD) 

(MZL) 

(RED) 

(SLA) 

(LTP) 

(BFS) 

(CRH)

(MCM) 

(CNS) 

(COP)

Lexington ReservoirMiligra Ridge-------

Pleasant Valley-—-- 

Portola State Park-­ 

Presidio---———--- 

Pescadero-----------

Rodeo Gulch Road — -- 

Redwood Retreat — --- 

Joshua Ridge West--- 

San Andreas Lake—--

37.2018

37.6370

36.9770

37.2645

37.7950

37.1990

37.0370

37.0545

35.9943

37.5825

Stevens Creek——- —— --—— 37.2845 

Stanford Telescope---——— 37.4052

Saratoga Golf/Country——— 37.2827 

Club.

St. Joseph's Seminary-—— 37.3338 

Sawmill Road—————————— 37.2123 

Soda Springs—————————— 37.1695 

Santa Teresa Hills—--- 

Trout Gulch Road———-•

Univ. of Calif.,- 

Santa Cruz.

37.2068

37.0285

37.0012

Woodside—------

Mt. Lassen- —— - 

Crescent CliffsLa Honda —------

Manzanita Lake-­ 

Reading Peak—-- 

South Lassen- — -

37.4180

40.4752

40.4863

37.3313

40.5443

40.4642

40.4337

Las Trampas Ridge————-- 37.7943

Blanchard Fire Station—— 37.6785

Carson Hill—————————— 38.0187

McCormick MineCentral Site—— 

Copperopolis——

37.8862

37.9388

37.9727

121.9862

122.4738

121.8322

122.2130

122.4750

122.3483

121.9645

121.7268

117.8215

122.4172

122.1237

122.1758

122.0500

122.0913

122.1677

121.9307

121.7973

121.8763

122.0485

122.2722

121.5082

121.5240

122.2803

121.5643

121.4612

121.5362

121.9940

120.3633

120.5095

120.5067

120.5293

120.6170

244

201

158

186

107

84

213

408

1366

207

357

143

198

122

262

946

149

253

177

280

2650

840

226

329

859

1060

256

309

475

362

373

336

2/04/75 

8/31/71 

7/01/72

--do——

--do——

--do ——

12/22/66 --do——

9/26/68 2/11/69

11/25/70 Open——

1/28/76 --do——

1/09/76 --do——

9/25/75 --do——

10/01/73 --do--- Franciscan Formation; 

	Jurassic to Eocene.

12/23/66 --do——

12/13/66 --do——

1/22/75 —do ——

12/23/66 --do——

7/14/71 —do——

1/22/75 --do——

10/02/75 --do——

10/02/75 —do——

1/29/75 —do——

12/21/66 —do——

10/01/73 7/16/73

11/12/76 Open——

12/18/66 5/01/70

11/12/76 Open——

11/12/76 —do——

11/12/76 --do——

9/02/76 6/01/77

11/03/76 Open——

4/19/72 --do—— Metavolcanics; preCretaceous.

4/19/72 11/03/75

4/19/72 Open——

4/19/72 —do——

69
SITE INFORMATION—Continued

CALIFORNIA—Continued 

Menlo Park, CA

Code

New Alternate Local Station name

Latitude 

(deg N.)

Longitude Elev Date 

(deg W.) (meters) opened

Date 

closed

Foundation; 

>ic age

MFSM 

MMWM 

MNHM

MOYM 

MRFM

MSTM

NBPM

NBRM

NCDM

NCFM

NFIM

NFRM

NGVM

NHBM

NHMM

NLNM

NMCM

NMHM/

NMTM

NMWM

NMXM

NOLM

NSHM

NSPM

NTMM

NWRM

MDC

MFS

MOB

MTB

BBR 

CRD

FTR 

GVR

HMR 

LOG

NMC

MAC 

MIX

SNT

(MDC)

(MDO) 

(MFS) 

(MWV) 

(NHR) 

(MOB) 

(OBF) 

(RFR) 

(STN) 

(MTB) 

(BRP) 

(BBR) 

(CDR) 

(CAR) 

(FAR) 

(FTR) 

(GVR) 

(HLB) 

(HMR) 

(LNS) 

(NMC) 

(SHQ) 

(MDT) 

(MWS) 

(MIX) 

(OLQ) 

(SHR) 

(SPT) 

(TUN) 

(NUT) 

(WHW) 

(OAR)

Mt. Diablo-

-doMcCloud Flat South-­ 

Mi Wuk Village-----

New Hogan ReservoirMenlo Park——------

O'Byrne Ferry-----—

Railroad Flat Road— 

S^ent——— ————— ----

Montebello Ridge----

Berryessa Peak------

Beebe Ranch— — - — — 

Cavedale Road-------

Canfield Road-------

Farallones Islands-­ 

Fort Ross ————— — -- 

Green Valley Ranch— 

Heraldsburg-——----

Hamilton Ranch— — — 

Lincoln School------

Nine Mile Canyon—-- 

Mt. Saint Helena — — 

Middletown—— — ——

Mark West Spring- — - 

Mix Canyon— — — — —

Olema---------—- —-

St. Helena Road—- — 

Sears Point- — — — —

Taylor Mountain-----

Nutting Ranch- — — — 

Wright Ranch- — - — — 

Oak Ridge— —— — -- —

37.8817

37.8673

36.1172

38.0638

38.1458

37.4502

37.9000

38.2453

37.9045

37.2907

38.6678

38.2608

38.3698

38.3213

37.6983

38.5227

38.2807

38.5893

38.1547

38.1525

35.8440

38.6695

38.8057

38.5505

38.4113

38.0397

38.5200

38.1827

38.3858

36.8243

38.4570

37.4653

121.9142

121.9282

117.8550

120.1815

120.8137

122.1833

120.5673

120.5207

120.4048

122.0905

122.1933

122.5498

122.4617

122.7955

123.0000

123.1610

122.2148

122.9090

121.8003

122.7125

117.9073

122.6338

122.4460

122.7228

122.0573

122.7925

122.6072

122.4533

122.6805

121.4573

122.8877

121.7343

1173

719

1524

1411

219

21

176

799

366

347

67

137

620

98

107

528

257

165

65

120

1080

1311

422

134

177

30

328

88

105

128

50

964

5/27/67 6/01/74 Franciscan Formation; 

Jurassic to Eocene.

5/27/70 7/29/70

9/25/75 Open---

7/12/76 --do——

3/77 --do——

9/22/67 9/11/76

4/19/72 Open——

7/12/76 —do——

4/19/72 --do---

2/07/75 12/23/76

5/10/74 Open——

8/14/70

3/08/71

8/14/70

5/05/71

1/22/75

4/30/71

2/21/75

4/29/71

8/14/70

9/25/75

1/20/77

6/26/75

8/14/70

6/12/71

2/23/77

8/14/70

2/03/71

8/14/70

-do——

--do——

-do—-

--do——

--do---

--do——

--do——

--do——

--do——

--do——

--do——

--do——

--do——

-do——

--do——

-do—-

--do——

--do—— 

12/10/75 197? 

8/14/70 Open—— 

6/10/70 6/12/70

70
SITE INFORMATION—Continued

CALIFORNIA—Continued 

Menlo Park, CA

Code

New Alternate Local Station name

Latitude 

(deg N.)

Longitude Elev Date Date 

(deg W.) (meters) opened closed

Foundation; 

geologic age

OBHM

OCHM

OGOM 

OHCM

ORAM

OSTM 

OSUM 

OTBM 

OwYM 

FARM 

PBWM 

PCAM 

PCRM

PGHM 

PHCM 

PHRM 

PIVM 

PJRM

PLOM 

PMPM

OLC

BTW 

CTM

GHC 

HVC

JOL

LRC 

MOP

(OBLO) 

(OBID) 

(OCAM) 

(OCOR) 

(OCOX) 

(ODAM) 

(OFIG) 

(OFOR) 

(OGOO) 

(OHON) 

(OKAT) 

(OLC)

(OLON)

(OLUV)

(ORAT)

(OSHP)

(OSTI)

(OSUT)

(OTAB)

(OWYN)

(ATR)

(BTW)

(CAS)

(CRY)

(PEM)

(PER)

(GDH)

(HEC)

(HER)

(IND)

(JOL)

(LOR) 

(MOP)

Bloomer Hill—--- 

Bidwell Canyon—- 

Camarillo Hill—- 

Cohasset Ridge—- 

Cox Road— — — — -

Oroville Dam— — - 

Fine Gold Gulch-­ 

Foreman Creek- —- 

Van Goodin RanchHoncut---------—

Katskill Hills — - 

Olema-——-------

Lone Tree Road——-- 

Olive Highway--—--- 

Rattlesnake Point--- 

Shippee--- — — — —— -

Stimpson Lane-------

Sutter Buttes —— --- 

Table Mountain—- — - 

Wyandotte-----------

Anticline Ridge— — - 

Bitterwater---------

Castle Mountain—--- 

Curry Mountain------

Permanente Quarry 1- 

Permanente Quarry 2- 

Gold Hill———————- 

Hearst Castle---—-- 

Hernandez-----------

Indian Valley- — — — 

Jolon Road---------

Lone Oak RoadMonarch Peak--

39.6517

39.4882

39.5240

39.8758

39.3800

39.5310

39.4117

39.5925

39.6537

39.3357

39.4018

38.0397

39.4445

39.5118

39.4687

39.5562

39.3688

39.2712

39.5457

39.4530

36.2492

36.3150

35.9317

36.0938

37.3247

37.3243

35.8310

35.6822

36.3730

35.9065

36.0837

36.2465

36.2152

121.4617

121.4523

121.6233

121.7655

121.5435

121.4775

121.4762

121.4492

121.6120

121.4840

121.4207

122.7925

121.5712

121.5118

121.4135

121.7175

121.5970

121.8523

121.5610

121.4868

120.3420

120.9292

120.3370

120.4347

122.1055

122.1102

120.3528

121.1525

120.8188

120.6823

121.1692

121.0425

120.7948

914

305

122

530

37

293

152

384

158

79

250

30

54

168

588

40

28

67

219

168

485

381

1189

296

466

488

433

514

750

497

336

308

784

9/06/75

9/06/75

8/05/75

12/17/76

11/04/75

9/06/75

9/06/75

9/06/75

12/28/76

8/05/75

8/05/75

12/22/66

8/05/75

10/22/75

8/05/75

9/06/75

8/05/75

4/01/76

9/06/75

8/05/75

9/05/75

1/27/72

12/15/70

9/04/75

5/08/70

5/24/71

3/21/68

12/17/73

11/26/69

9/24/75

6/18/69

8/14/70 

8/14/70

Open---

11/04/75

9/01/76

Open---

9/01/76

11/04/75

9/01/76

9/01/76

Open——

--do—— 

9/01/76 

2/23/77

9/01/76 

9/01/76 

Open--- 

10/17/75 

Open—-

-do—— 

11/04/75 

Open——

-do——

-do——

-do——

--do—— 

5/28/70 

8/28/71 

Open- —

--do ——

--do——

--do——

--do——

Franciscan Formation; 

Jurassic to Eocene.

Marine sediment; 

Miocene.

71
CALIFORNIA—Continued 

Menlo Park, CA

SITE INFORMATION--Continued

New

PPFM

PPTM 

PSMM 

PTYM

PWKM

RCWM 

RVCM

SMWM 

VPEM

Code

Alternate

PNC 

PKF

PTV 

TRC 

WKR

SFR 

SHC

___

SRC 

STC

TWN

Local

(PNC) 

(PKF)

(PTV) 

(SMM) 

(TAY) 

(PVR) 

(WKR) 

(QRY) 

(RCW) 

(RVC) 

(SAL) 

(SCZ) 

(SFR)

(SHC)

(SL1) 

(SL2) 

(SL3) 

(SL4) 

(SL5) 

(SL6) 

(SL7) 

(SMR) 

(SMW) 

(SRS) 

(STC)

(TWN) 

(TYL) 

(VPE)

fUARI

Station name

Parkfield ----------------

San Francisco (Rincon)---

San Luis Reservoir i----- 

San Luis Reservoir 2-----

San Luis Reservoir 4----- 

San Luis Reservoir 5----- 

San Luis Reservoir 6 — — -

Sugarloaf Mountain West-­

Observatory.

Unit o>- Runr-h-------------

Latitude 

(deg N.)

36.5622 

35.8818

36.1083 

36.0697 

35.9455 

37.4292 

35.8145 

37.3250 

35.9502 

36.0080 

37.5760 

37.0140 

37.7880

38.6703

37.0812 

37.0312 

37.1147 

37.0043 

37.0710 

37.0283 

37.0297 

36.3820 

36.0193 

36.6685 

36.6350

36.0527 

38.1470 

35.9495

•3R AR^n

Longitude 

(deg W.)

121.6363 

120.4135

120.7212 

120.5947 

120.4742 

121.7425 

120.5112 

122.1047 

117.6473 

117.8900 

122.4233 

122.0345 

122.3895

122.6338

121.0612 

121.0553 

121.1382 

121.1150 

121.1560 

121.0920 

121.1402 

120.9695 

117.8458 

121.5188 

121.2333

121.5075 

121.5625 

117.8167 

199 ~inin

Elev 

(meters)

305 

469

506 

988 

552 

975 

503 

453 

954 

1067 

335 

137 

8

1200

116 

293 

189 

219 

180 

302 

219 

503 

1116 

399 

259

148 

1 

1463

1 1 1

Date 

opened

9/24/67 

1/11/68

4/16/70 

9/24/75 

1/12/67 

7/12/68 

1/11/68 

2/07/75 

9/26/75 

9/26/75 

7/13/67 

1/01/69

12/07/73

2/28/74 

2/28/74 

2/28/74 

2/28/74 

2/28/74 

2/28/74 

2/28/74 

7/26/71 

9/25/75 

5/09/69 

1/22/67

12/17/73 

7/07/72 

9/26/75 

R/no/7n

Date Foundation; 

closed geologic age

2/17/67

Open--- Marine sediment; 

middle Miocene.

--do —— 

--do —— 

--do ——

5/07/70 

Open--- --- 

1977 

Open--- --- 

--do —— 

9/27/72 

3/04/69

4/07/76 Franciscan Formation; 

Jurassic to Eocene.

1/20/77 Nonmarine terrace 

deposits; Quaternary.

1/17/75 

1/17/75 

1/17/75 

1/17/75 

1/17/75 

1/17/75 

1/17/75 

1/18/72 

Open--- --- 

3/04/77

10/06/76

9/04/75 

10/24/72 

Open--- --- 

i/m /7i ——

72
INSTRUMENTATION

CALIFORNIA—Continued 

Menlo Park, CA

Code

Seismometer

Type Component T (sec)

Galvo 

Tg (sec)

Type 

recording

Magnification 

at T

Remarks

Most stations

BJCM, BJOM, BSGM, 

HDLM, HFPM, HJGM, 

HQRM, JALM, JPLM, 

JSFM, JSGM, 

(OBID), (OCOX), 

(ODAM), (OFIG), 

(OLUV), OTBM, SRC, 

and STC:

AFDM

Mark L-4C- 1.0 Develocorder

Mark L-4C————— Z,NS 

Geotech S-13—— Z,NS,EW

BVLM, CRC, (OLON),

and OWYM: Mark L-4C————— Z,NS,EW

JBMM Mark L-4CWilmore—- NS

1.0 

1.0

1.0

1.0 

5.0

A few stations are 

also recorded on 

Helicorder.

—do——————

—-do——————

—do——————

Operated only

April-August 1975.

Timing system: WWVB and IRIG signals recorded directly. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

Coding of these stations is somewhat unusual. Local codes had been assigned that often conflicted with other international 

codes; therefore, when data were contributed to NEIS, alternate three-letter codes were assigned. To identify the networks and 

to obtain unique station names that would not conflict with existing codes, a system of four-letter codes was designed. These 

are the codes ending with M, listed in the column headed "New." The "Alternate" codes are those which were assigned by NEIS and 

are still valid. The "Local" codes are those which had been used by Menlo Park in cataloging data and which may still be useful 

in locating old records.

The first letter of the four-letter codes signifies the network that contains the station. 

Therefore, A—M belongs to the network Auburn

B--M Bear Valley 

C--M Calaveras 

G--M Geysers 

H--M Holister 

J--M San Jose 

L--M Lassen 

M—M Melones 

N--M Napa 

0--M Oroville 

P—M Parkfield

The Coso network does not conform to this system. Its members include BCHM, CBHM, CFWM, CGSM, CPTM, CSSM, DKNM, DTEM, 

HWSM, JRWM, MFSM, NMCM, RCWM, RVCM, SMWM, VPEM.

Recording of seismicity near Auburn began in February 1972, with the installation of the station ADC; it is owned by the 

Bureau of Reclamation and operated by the USGS, Albuquerque. A horizontal Wood-Anderson began operating there in April 1973. 

On January 28, 1976, the operation of the station was turned over to USGS, Menlo Park, which expanded the network to include 

20 stations.

HORM was not operated from May 9, 1968, to December 3, 1969. 

JPPM was not operated from April 5, 1971, to August 20, 1975. 

JBCM, (LHD), (MDO), NFIM, CSHM, (FOR), and HCBM operate intermittently.

The Center publishes a quaterly report entitled, "Catalog of Earthquakes along the San Andreas Fault system in Central 

California."

73
CALIFORNIA 

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U. S. Geological Survey

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2321 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

(DFCC) Cottonwood Creek —— •

(DFHR) Hanging Rock ————— -

(DFHT) Horse Thief —————— -

(NRUB) Ubehebe Crater ——— -

INSTRUMENTATION

Code Type

Latitude 

(deg N.)

- —— 37.2250

- —— 37.3777

o f on i o

Seismometer

Component

Longitude 

(deg W.)

117.9365 

117.7313 

117.8300 

117.8963 

117.5040

To (sec)

Elev Date 

(meters) opened

1682 

1268 

1634 

1079 

1414

T

3/09/70 

5/26/70 

5/06/70 

5/26/70 

10/24/71

, Foundation; geologic age

1/71 

1/71

1/71

1/71 

12/73

Galvo Type Magnification Remarks 

(sec) recording at T

Timing system: WWVB and IRIG-C recorded directly. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

(DFCC), (DFHR), (DFHT), and (DFVC) are part of the Death Valley-Furnace Creek network; the other part is in Nevada. 

(NRUB) is part of the regional network; the other stations of this network are in Nevada.

74
GENERAL INFORMATION

CALIFORNIA 

Pasadena, CA

Operated by: California Institute of Technology

Address: Seismological Laboratory 252-21 

California Institute of Technology 

Pasadena, CA 91125

Telephone: 213-795-8806 

Address to obtain records: 

As above. 

SITE INFORMATION

Code

(ADL) 

BAR 

BBC 

(BLU)

(BTL) 

(CFT) 

CHP 

CIS 

(CKC)

CLC 

(COQ) 

(COY) 

CPE 

CPT

(CRE) 

CWC 

(DB2) 

DHS 

DLT 

EGA 

ECC 

FTC 

r.bv

Station name

Latitude 

(deg N.)

— 34.4053

--- 35.8167

n Q£nc

*5 O QQf\f\

--- 33.3025

--- 33.7350

--- 33.9667

--- 34.1700

•-- 32.8000

.__ •?/, noo^

Longitude 

(deg W.)

117.4170 

116.6717 

116.9083 

117.7253

117.0033 

117.1110 

119.0117 

118.4033 

117.1747

117.5967 

117.5097 

116.3105 

117.1000 

117.3395

117.2617 

118.0783 

117.0620 

116.5000 

117.8100 

116.9500 

115.5483 

118.8933

117 ^10-5

Elev 

(meters)

900 

510 

2060 

1880

671 

1590 

485 

550

766 

1634

213 

61

1430 

1620 

625 

330 

523 

135 

-15 

990 

oeo

Date 

opened

2/75 

1/17/52 

6/21/51 

2/75

11/75 

1/75 

1952 

7/01/71 

4/75

7/08/49 

1/76 

1/76 

11/72 

1/75

5/19/49 

10/13/65 

4/75 

1948 

7/20/50 

1949 

11/28/56 

11/21/52

Date 

closed

Open— 

—do— 

9/20/57

--do — 

— do — 

11/52 

Open— 

— do—

— do— 

— do — 

— do — 

— do— 

— do—

8/31/50 

Open-- 

--do— 

3/49 

8/29/59 

Closed 

9/30/70 

9/30/70

Foundation; geologic age

Alluvium; Quaternary. 

Granodiorite; Cretaceous.

Igneous and raetaraorphic complex 

(Precambrian) , intruded by 

tonalite (Mesozoic) .

Granite; Mesozoic. 

Nonmarine sediments; Pleistocene.

Ultrabasic intrusive; Mesozoic.

Nonmarine sediments; middle or 

early Pliocene.

Quartz diorite; Cretaceous. 

Metamorphics; Jurassic, Triassic. 

Metamorphics ; pre-Cretaceous . 

Conglomerate; Eocene.

Nonmarine terrace deposits; 

Quaternary.

Quartz diorite; Cretaceous. 

Gabbro; Mesozoic.

Volcanic; Miocene. 

Alluvium; Quaternary.

75
CALIFORNIA—Continued 

Pasadena, CA

SITE INFORMATION--Continued

Code

GLA

GSC

HAI

HAV

HAY

(HOT)

IKP

IRC

ISA

(KEE)

KNO

KRC

LGC

LJC

(LRR)

(MDA)

(MLL)

MWC

PAS

(PCF)

(PEM)

PLM

(POB)

POM

PRR

(PSP)

PVR

(RAY)

(RDM)

RVR

Station name

Glamis- —— ————— — - ——

Goldstone------ — —— — —

Haiwee — -- —— ——————— -

Havilah ————————————

Hayfield ———————————

Hot Springs-------- — ——

Inkopah- — -- —— - ———— —

Iron Canyon---- — -------

Isabella------- — ——— --

Keen Camp-- ———————— —

Maintenance Station.

Knox Ranch- — - — --------

King Ranch- — — ---------

Lakewood Golf Course-- —

La Jolla — -- — ------- — -

Little Rock Reservoir- —

Mount Davis- — — ———— —

Mill Creek — —— —— —— ——

Mount Wilson- ——— ---- ——

Pasadena — —— -- — ---- ——

Pomona-- — -- — ------- — -

Pine Mountain--------- —

Palomar--- --------------

Polly Butte -- —— —— — ——

Pomona ------------------

Perris-------- ----------

Palm Springs------- —— --

Palos Verdes---- — — — --

Raywood Flat — — — ---_ —

Round Mountain- — ---- — -

Riverside-- — -- —— --- — -

Latitude 

(deg N.)

33,

35.

36.

35.

33

33.

32.

34,

35.

33.

35

35,

33,

32,

34,

33.

34.

34.

34.

34,

34,

33.

33.

34.

33.

33.

33.

34.

34.

33.

.0525

.3017

.1367

.5100

.7083

.3140

.6488

.3900

.6633

.6383

.4833

.3267

.8358

.8633

.5260

.9130

.0913

.2238

.1483

.0532

.1673

.3534

,6867

,1000

.7800

,7938

,7583

.0363

.4000

,9933

Longitude 

(deg W.)

114.

116.

117.

118.

115.

116.

116.

118.

118.

116.

118.

119.

118.

117.

118.

116.

116.

118.

118.

117.

117.

116.

116.

117.

117.

116.

118.

116.

117.

117.

8265

8046

9467

5167

6383

5815

1080

4000

4733

6532

5283

7450

1503

2533

0277

9995

9363

0577

1717

7907

8697

8617

9233

7167

2333

5488

3567

8112

1850

3750

Elev 

(meters)

627

990

1150

990

439

——

957

580

835

1366

1090

680

17

8

——

845

1513

1730

295

——

——

1692

——

350

440

195

340

——

1426

260

Date 

opened

12/20/66

11/07/61

9/11/29

7/52

6/20/56

1/76

11/72

11/01/71

1/06/54

2/75

7/52

10/16/52

5/71

5/04/27

5/76

1/75

12/74

4/23/28

3/17/27

1/76

2/76

9/07/39

5/76

1949

1949

3/75

3/21/56

11/75

12/76

10/19/26

Date 

closed

Open —

— do—

10/27/65

9/04/52

Open—

--do—

— do—

— do—

— do—

— do—

11/10/52

12/03/65

3/15/74

11/30/75

Open —

— do—

— do—

—do—

— do—

— do—

— do—

— do—

--do-­

Closed

—do ——

Open—

Closed

Open —

— do—

--do-­

Foundation; geologic age

Basalt; Tertiary.

Granite; Cretaceous.

——

——

Quartz monzonite; Cretaceous.

Granite; Mesozoic.

Quartz diorite; Cretaceous.

Shallow alluvium (Quaternary)

over gneiss.

Quartz diorite; Cretaceous.

Tonalite; Mesozoic.

._-

——

Alluvium; Quaternary.

.

Alluvium.

Nonmarine sedimentary rocks;

Pliocene.

Igneous and metamorphic rock

complex; Precambrian.

Granodiorite; Cretaceous.

Granitic gneiss; pre-Cretaceous.

Volcanics; Miocene.

Metamorphics; pre-Cretaceous.

Quartz diorite; Cretaceous.

Granite; Mesozoic.

——

——

Mylonitized metasedimentary rocks;

Mesozoic.

Shale; Miocene.

Gneiss .

Marine metasediments;

Carboniferous.

Granite; Cretaceous.

76
SITE INFORMATION—Continued

CALIFORNIA—Continued 

Pasadena, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

2/75 --doll/75 —do—

SBB Saddle Back Butte————— 34.6883 117.8250 832 1/03/74 Open—

SBC Santa Barbara———————— 34.4417 119.7133 90 5/10/27 —do—

SCI San Clemente Island——— 32.9800 118.5467 219 11/71 —do—

SCY Stone Canyon Reservoir-- 34.1062 118.4542 287 2/75 —do—

(SOW) Sidewinder Mine—————— 34.6092 117.0742 1184

(SIL) Silver Peak————————— 34.3478 116.8267

SJQ San Joaquin Reservoir—— 33.6200 117.8450 165 7/71 Closed

(SHE) Santa Rosa Mine——————— 33.8227 117.3553 494 2/75 Open—

(SMO) Santa Rosa Mountain——— 33.5358 116.4617 —— 6/76 —do—

SNC San Nicolas Island———— 33.2483 119.5233 275 7/24/57 1/24/68

SNS San Onofre——————————— 33.4322 117.5488 152 1/75 Open—

(SSK) Sunset Peak—————————— 34.2162 117.6887 —— 1/76 — do—

(SSV) San Sevaine—————————— 34.2170 117.4890 1609 1/76 —do—

SWM Sawmill————————————— 34.7183 118.5817 1220 3/07/66 12/08/70

SYP Santa Ynez Peak——————— 34.5267 119.9783 1305 6/67 Open—

TCC Turnbull Canyon—————— 33.9945 118.0128 299 11/76 Closed

(THE) Three Sisters———————— 34.5532 117.7183 —— 11/12/75 Open—

TIN Tinemaha———————————— 37.0550 118.2283 1195 9/04/29 —do—

TPC Twentynine Palms—————— 34.1058 116.0488 720 5/72 —do—

(TPO) Tropico Hill————————— 34.8788 118.2277 —— 5/76 --do—

TWL Twin Lakes—————————— 34.2783 118.5945 390 11/71 —do—

(VGR) Vista Grande————————— 33.8375 116.8088 1484 12/75 —do—

VPD Villa Park Dam——————— 33.8160 117.7622 183 7/71 —do—

(VST) Vista—————————————— 33.1567 117.2317 —— 1/75 —do—

WDY Woody—————————————— 35.7000 118.8433 500 8/05/52 8/27/70

WRC Williams Ranch——————— 35.2983 118.6117 430 1952 1953

(WWR) Whitewater—————————— 33.9918 116.6560 702 1/75 Open-­

Quartz monzonite; Cretaceous. 

Alluvium; Quaternary.

Shallow terrace gravels over 

basalt; Quaternary.

Metavolcanic rocks (JurassicTriassic) intruded by quartz 

monzonite (later Mesozoic).

Granite; Mesozoic.

Marine metasediments; 

Carboniferous.

Sandstone; Tertiary.

Tonalite; Mesozoic.

Granite; Mesozoic.

Marine; Eocene.

Marine sandstone; Eocene.

Metamorphics; pre-Cretaceous.

Granite; Mesozoic.

Metamorphics; pre-Cretaceous.

Sandstone; Eocene.

Siltstone; Miocene.

Basic intrusive; Mesozoic.

Basalt; Quaternary.

Quartz monzonite; Cretaceous.

Volcanic intrusives; Tertiary.

Sandstone; Cretaceous.

Granite; Mesozoic.

Terrace gravels; Quaternary.

Granite; Mesozoic.

Granitic rock.

Coachella Fanglomerate (lower 

member); Miocene (?).

77
INSTRUMENTATION

Seismometer

Code

(ADL) 

BAR

BBC 

(BLU)

(BTL)

(CFT) 

CHP 

CIS

(CKC)

CLC 

(COQ) 

(COY) 

CPE

CPT 

(CRE) 

CWC

(DB2) 

DHS 

DLT 

ECA 

ECC

FTC 

GAV 

GLA

GSC

Type

Mark L-4C ———————— •

—do ———————————— •

Mark L-4C ———————— •

Mark L-4C ———————— •

Mark L-4C ———————— •

Mark L-4C ———————— •

instruments only.

Mark L-4C ———————— -

--do ———————————— -

Component

Z

Z

Z

Z

Z

Z

Z

Z 

Z

7 WC FU

T (sec)

1.0

1.0 

1.0

1.0 

1.0

1.0

1.0 

1.0 

1.0

1.0

1.0 

1.0 

1.0 

1.2

1.0 

1.0 

1.0

1.0 

1.0 

1.0 

1.0

1.0 

1.0 

1.0

1.0 

1.0

inn

Galvo 

T (sec) 

g

0.062

90.0 

.2

.2 

.062

.062 

.062

.033-10 

.062

.2 

.062 

.062 

.2

.2 

.2 

.2

.062 

.2

.2 

.062 

.2

.2 

.75

inn n

CALIFORNIA— Continued 

Pasadena, CA

Type Magnification 

recording at T

Develocorder 

Photo paper

—do ————— 

--do —————

Develocorder

—do —————— 

—do ——————

Photo paper, 

pen and ink

Develocorder

Photo paper 

Develocorder 

—do ——————

Photo paper, 

pen and ink

Pen and ink 

Photo paper 

Develocorder

Develocorder

Photo paper, 

pen and ink

—do ——————

Photo paper

,!„_______

6000 K

3 K 

300 K

1200 K 

3000 K 

1500 K

430 K 

1500 K

500 K 

1200 K 

1200 K 

87 K

80 K

400 K 

6000 K

1200 K 

360 K

480 K

1 R V

Remarks

Magnification at 14 Hz 

on Geotech viewer.

Also has a torsion meter

Magnification at 14 Hz 

on viewer screen.

Magnification at 14 Hz 

on viewer screen.

Do.

Telemetered to Pasadena.

Magnification at 14 Hz 

on viewer screen.

Telemetered to Pasadena.

Telemetered to Pasadena 

and the University of 

California, San Diego.

Also has torsion meters 

and strong-motion 

instruments .

Also has a torsion meter 

Telemetered to Pasadeni

Telemetered to Pasadena. 

WWSSN station.

n~

78
INSTRUMENTATION—Continued

Seismometer

Code

HAI

HAV 

HAY

(HOT) 

IKP

IRC 

ISA

(KEE)

KNO 

KRC 

LGC 

LJC 

(LRR) 

(MDA)

(MIL) 

MWC

PAS

(PCF) 

(PEM) 

PLM

(FOB) 

POM 

PPR 

(PSP)

PVR

CPAVl

Type

—do ————————

Mark L-4C — —— ——

—do „ —— __——___.

Mark L-4C ——— ———

--do — — — — — —————

Mark L-4C — ——— ——

Mark L-4C —— —— ——

--do ————————

—— do —— ————— — — — —

--do — — — ——— — ————

—do ————————————

— do ——— ————— ———————

Benioff —— —— - — ---

Mark L-4C —— — ——— 

Mark L-4C -------

Benioff - — —— ------

Mavb- T _/,r___ —— _____

Component

, No ,HW

z 

z

7

TQ (sec)

1.0 

.8

1.0 

1.0

1.0 

1.0

1.0 

1.0

1.0

1.0 

1.0 

1.0 

1.0 

1.0 

1.0

, i.o

1.0

1.0

1.0 

.8 

.8

30.0

1.0 

1.0 

1.0

1.0 

1.0 

1.0 

1.0

1.0

i n

Galvo 

Tg (sec)

0.2

•2, 

90

.062 

.2

.2 

.2

.062

0.2 

.033-10 

.2 

.062 

.062

.062 

.2

.2 

90.0

90.0 

Ultra-long 

.062 

.062 

.2

.062

.062

.2 

n£o

CALIFORNIA— Continued 

Pasadena, CA

Type Magnification Remarks 

recording at T

Photo paper

Develocorder

Photo paper, 

pen and ink

Photo paper

Photo paper, 

pen and ink

Develocorder

Photo paper 

Develocorder

--do —— — ——

—do — —— ---

Photo paper, 

pen and ink

Photo paper

--do ——— —— ———

--do —— — —— 

--do ------

Photo paper, 

pen and ink

Develocorder 

--do ------

Photo paper, 

pen and ink

Develocorder 

Develocorder

400 K, 

3 K

1200 K 

166 K

234 K 

240 K

6000 K

30 K

1200 K 

3000 K

1500 K 

237 K

3 K

4, 

100 

2000, 

25

1200 K 

1200 K 

480 K

1200 K 

6000 K

t inn v

Signal filtered two ways

Telemetered to Pasadena.

Do.

Also has torsion and 

strain meters.

Magnification at 14 Hz 

on viewer screen.

Telemetered to Pasadena.

Magnification at 14 Hz 

on Geotech viewer.

Do. 

Telemetered to Pasadena.

Z telemetered to 

Pasadena.

——

Also has torsion and 

strong-motion meters.

Magnification at 14 Hz 

on Geotech viewer.

79
INSTRUMENTATION— Continued

Seismometer

Code

(RDM)

RVR

SBB

SBC

SCI

SCY

(SOW)

(SIL)

SJQ

(SME)

(SMO)

SNC

SNS

(SSK)

(SSV)

SWM

SYP

TCC

(THR)

TIN

TPC

(TPO)

TWL

(VGR)

VPD

(VST)

80

Type

Mark L-4C ———————

Benioff ——————

__ do _______________

Wood-Andersen- — ——

Lehner-Griffith ———

Ranger —— — - — - — -

Geotech S-13 —— ——

Benioff —————————

Wood-Anderson- — - —

Lehner-Griffith ———

Benioff ------------

__ do ——_____.___——

Mark L-4C —— —— ——

——do — ——— ——— —— ——— —

——do ——— ——— ——— ——— ———

—— do ——— ——— —— ———— ———

Mark L-4C —— —— ——

Benioff ——-- — — —

__ do ———— —— —— ——

Wood-Anderson--- — -

Benioff —— ----- ——

Mark L-4C — —— — ——

--do ——— ——— - — --- ———

Benioff —— —— —— --

--do —— — — — — — —

Mark L-4C — — —— ——

--do —— —— ——— ——— —————

Benioff ----------

—do ——— — ———— —

Wood-Anderson-- ——

Electrotech--- — ---

Mark L-4C —— —— ——

Electrotech --------

Geotech S-13— — ——

Mark L-4C —— —— ——

Mark L-4C —— —— ——

Geotech S-13 ——— —

Ranger--- —— - —— —

Component

Z

Z

— Z.NS.EW

NS.EW

— Z.NS.EW

Z

— Z,NS,EW

Z

NS,EW

— Z,NS,EW

Z

Z

Z

_, *J

Z

Z

Z

Z

Z

EW

Z

Z

Z

Z

Z

Z

Z

Z

— Z.NS.EW

NS,EW

Z

Z

Z

-- Z.NS.EW

Z

Z

— Z,NS,EW

Z

To (sec)

1.0

1.0

1.0

.8

.8

1.0

1.0

1.0

.8

.8

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.8

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

.8

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Galvo 

Tg (sec)

0.062

.2

90.0

——

___

.2

90.0

.2

___

.2

.2

.062

.062

.033-10

.062

.062

.2

90.0

___

.2

.062

.062

.2

.2

.033-10

.062

.2

90.0

——

.2

.062

.2

90.0

.062

.2

90.0

.2

CALIFORNIA— Continued 

Pasadena, CA

Type Magnification Remarks 

recording at T

Develocorder

Photo -paper

Pen and ink

Photo paper

-_ do —— ——

Photo paper,

pen and ink

Photo paper

Photo paper

—do —— ——

—do —— ——

Photo paper

——

Develocorder

--do —— — ——

Photo paper

Develocorder

Develocorder

——

——

Develocorder

—do —— —— —

—do —— — —

——

Photo paper,

pen and ink

Photo paper

Develocorder

Photo paper

—do —— ——

—do —— ——

Photo paper,

pen and ink

Develocorder

Photo paper

Pen and ink

Develocorder

Photo paper

Pen and ink

Develocorder

1200 K

240 K

3 K

2.8 K

100 NS component also record'

ed at magnification 4.

800 K

3 K

20 K

2.8 K

100 NS component also record'

ed at magnification 4.

90 K

——

——

1200 K

110 K

6000 K Magnification at 14 Hz

on Geotech viewer.

1200 K

—— ——

—— ——

——

——

1200 K

1200 K

——

90 K

110 K

1200 K

60 K

3 K

2.8 K

376 K

1200 K

117 K

3 K

1200 K

220 K

3 K

—— ——
CALIFORNIA- -Continued 

Pasadena, CA 

INSTRUMENTATION— Continued

Seismometer

Code

WDY

Type Component

tt

--- V\J

TQ (sec)

1.0 

ft

Galvo Type Magnification Remarks 

T (sec) recording at T

. 2

WRC —— Z 1.0

(WWR) Mark L-4C ————————— Z 1.0 .062 Develocorder 3000 K Magnification at 14 Hz

on Geotech viewer.

Timing system: Custom crystal clock and WWVB radio signal.

System response curves: GSC--see figure 1, p. 363. Others available from station.

SHORT HISTORY

Along with the extensive network noted above, C.I.T. shares responsibility with the USGS for nearly 100 other stations in 

southern California region. C.I.T and USGS efforts are closely coordinated; and, occasionally, funding and operational responsibilities for various stations are exchanged.

Most of the stations currently operating belong to one of three networks: I. A. Basin, C.I.T. Telemetered, and San 

Bernardino.

L. A. Basin network comprises: CIS, IRC, MWC, PAS, SCY, SJQ, SNS, SWM, TCC, TWL, and VPD.

C.I.T. Telemetered network is composed of: CIC, CPE, GLA, GSC, IKP, ISA, PLM, RVR, SBB, SCI, SYP, TPC and (VST).

San Bernardino network comprises: (ADL) , (BIU) , (BTI) , (CFT), (CKC), (COQ) , (COY), (DB2), (DVL) , GAV, (HOT), (KEE) , (LRR) , 

(MDA), (Mil), (PCF), (PEM), (POB) , (PSP), (RAY), (RDM), (SDW), (SII), (SME), (SMO) , (SSK) , (SSV), (TPO) , (VGR) , and (WWR).

BAR replaced IJC, part of the original C.I.T. network.

CIC was installed as a temporary station but later was made permanent.

CPE was installed by the University of California, San Diego. Telemetering was added by C.I.T.; the station is now shared 

by both institutions.

(CRE) was destroyed by fire and was subsequently replaced by BBC.

CHP, DHS, ECA, HAV, KNO, POM, PRR and WRC were all temporary stations.

CWC replaced HAI , which was razed to enlarge the Haiwee Dam.

ECC established instruments in the same room with USC&GS strong-motion instruments in order to compare the magnitude determination of the instruments.

GLA was one of the original telemetered stations.

GSC was started as a temporary station; it was then equipped with the permanent WWSSN equipment that was moved from Palomar.

HAY was originally installed in a building constructed for the purpose of housing the instrument, but was later moved to a 

cave-vault 330 m from the building.

IKP is located in Inkopah Park, San Diego County.

IRC started as a temporary installation after the San Fernando earthquake in 1971. The instruments later were transferred 

to a permanent, insulated steel vault.

ISA was installed following the 1952 Tehachapi earthquake. It moved to a more permanent location at Isabella Dam and later 

to a tunnel at Frenchman's Gulch.

PAS was established by Carnegie Institution of Washington, D. C. In 1937, its operation was assumed by C.I.T. and it has 

since become the headquarters for the C.I.T. network. Several instrument changes have been made since 1937.

PLM originally had a Beniof seismometer (t =1.5 sec) and a 35-mm film recorder, which were replaced after World War II with 

a variety of instruments installed for a microseism study. The WWSSN equipment, now at GSC, was originally installed here.

RVR recorded on-site for many years; the torsion meters still do record on-site. The three- component Benioff system was 

added when telemetering began.

SBB and TPC are powered by solar panels.

SBC was recorded for years on paper drums, with the exception of a period when recording was done on 35-mm film for economic 

reasons. The Lehner-Griffith instruments were added in the 1950' s. The station was maintained by the Santa Barbara Museum of 

Natural History.

SCI was installed with the help of the U.S. Navy, although the installation was not completed at the time and was "reestablished" 2 years later.

SNC was established in cooperation with the U.S. Navy; it was later replaced by SCI.

TCC was operated in cooperation with the USGS.

TIN operated with the above-stated instruments from its inception. Except for the three-component Benioff 's, which were 

added in the late 1940' s. Telemetering was used for only a short period, and currently the station records on-site and is 

maintained by the Department of Water and Power for the City of Los Angeles.

TWL was installed after the 1971 San Fernando earthquake with a Benioff seismometer, which was later replaced with an Electrotech. The three-component instruments have been recently installed and are telemetered to PAS.

VPD was originally part of the C.I.T. -USGS L. A. Basin network; it is now operated by C.I.T., which has added the threecomponent instruments.

81
GENERAL INFORMATION 

Operated by

Address:

U.S. Geological Survey and

California Institute of Technology

U.S. Geological Survey 

Seismological Laboratory 

California Institute of Technology 

Pasadena, CA 91125

Telephone: 213-795-8806 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

Pasadena, CA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Kiev Date 

(meters) opened

Date 

closed Foundation; geologic age

(ABL) Mount Abel—————— 34.8508 119.2208 1981 6/76 Open—

AIC (SBAI) Anacapa Island——— 34.0133 119.4372 113 2/23/73 —do—

AMS Amos——————————— 33.1413 115.2542 140 3/73 —do—

(BC2) Big Chuckwalla——— 33.6570 115.4612 1185 11/74 --do-­ 

	Mountains, No. 2.

BCC (SBCC) Colson Canyon———— 34.9413 120.1720 610

BCD (SBCD) Casitas Dam—————— 34.3687 119.3438 213

(BCH) Branch Mountain—— 35.1850 120.0842 1140

BCL (SBCL) Casitas Lake————— 34.4125 119.3612 111

(BCM) Big Chuckwalla——— 33.6553 115.4480 1135 4/74 

	Mountains.

BFC Brooks Farm—————— 32.7248 115.0440 43 3/73 Open—

(BHM) Bighorn Mountains— 34.2788 116.6152 1850 4/74 11/74

BLG (SBLG) Laguna Peak—————— 34.1145 119.0642 415 11/69 Open—

BLP (SBLP) Lompoc—————————— 34.5603 120.4005 134 11/69 —do—

BUM Big Maria Mountains 33.7567 114.5857 564 4/74 10/76

(BMT) Bear Mountain———— 35.1358 118.5968 1237 8/76 Open—

(BON) Bonds Corner————— 32.6945 115.2685 14 3/73 —do—

BSC (SBSC) Santa Cruz Island-- 33.9947 119.6332 457 11/69 —do—

BSM (SBSM) San Miguel Island— 34.0375 120.3498 172 11/69 —do—

BSN (SBSN) San Nicolas Island- 33.2450 119.5067 259 3/70 —do—

(CAM) Camarillo Hills—— 34.2545 119.0333 268 6/15/73 —do—

(CEM) Cemetery———————— 32.7160 115.5012 -1 1/74 1/75

Undivided metamorphic rocks, gneiss; 

Precambrian.

Volcanic basalt; Miocene.

Igneous and metamorphic rock complex; 

Precambrian.

Granitic gneiss; Precambrian.

11/24/69 —do— Marine sediments; middle Miocene.

11/71 --do-- Nonmarine sediments; Oligocene.

6/76 --do-- Marine sediments; Late Cretaceous.

11/24/69 8/05/71 Nonmarine sedimentary rock; 

Oligocene.

11/74 Granitic gneiss; Precambrian.

Dune sand over alluvium; Quaternary.

Quartz monzonite or related rock; 

Mesozoic(?).

Marine sediments; middle Miocene. 

Marine sediments; Late Cretaceous. 

Granitic rock; Precambrian.

Granite, tonalite, and diorite; 

Mesozoic.

Alluvium or lake deposits; 

Quaternary.

Marine sediments; middle Miocene.

Do. 

Marine sediments; Pleistocene.

Nonmarine sediments; PliocenePleistocene.

Lake deposits; Quaternary.

82
SITE INFORMATION—Continued

CALIFORNIA--Continued 

Pasadena, CA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

(CJP)

(CLI)

(CLP)

CMH

C02

COA 

(COK)

COT 

(COX) 

(CPU)

(CRG) 

CRR

(DAH) 

(DBB) 

(DVL) 

EAG 

(ECF) 

(EGG) 

(ELR)

(FNK) 

FTC 

(GRP) 

(HDG)

(HSP)

ING 

(INS)

(IRN) 

(KEY) 

(KUB)

Conejo—————————— 34.1820 118.9865 314 6/18/73 10/75

Calipatria—————— 33.1408 115.5273 -59 11/76 Open—

Clark 1 s Peak————— 34.0888 118.9642 545 6/18/73 10/75

Chemehuevi—————— 34.5530 114.5720 940 2/75 Open-­ 

Mountains .

Coxcomb Mountains— 33.8472 115.3447 276 11/74 

No. 2.

Coachella——————— 32.8635 115.1227 34 3/73 —doCook Ranch—————— 32.8492 115.7268 -15 4/73 —doChocolate Mountain- 33.3048 115.3533 293 3/73 --doCoxcomb Mountains— 33.8725 115.3280 884 4/74 11/74 

Copper Mountain—— 34.1540 116.1967 937 6/74 Open—

Crocker Grade———— 35.2422 119.7233 1204 6/76 — do— 

Carrizo————————— 32.8863 115.9683 98 3/73 --doDahlia Canal————— 32.7345 115.5578 -6 1/74 5/76 

Double Butte————— 33.7350 117.0620 625 4/75 Open-­ 

Devil Canyon————— 34.1998 117.3282 598 12/74 11/76 

Eagle Mountain——— 33.8490 115.4732 366 11/74 OpenEcho Falls—————— 34.4580 119.0907 1000 11/75 --do-­ 

Egg Ranch——————— 34.1325 119.1470 —— 6/16/73 7/04/73 

Elmore Ranch————— 33.1473 115.8325 -63 11/76 Open—

Frink—————————— 33.3830 115.6377 12 11/76 --do-­ 

Fort Tejon—————— 34.8733 118.8933 924 8/76 --do-­ 

Granite Pass————— 34.8043 115.6045 1238 4/74 --do-­ 

Hidalgo Mountain—— 34.4288 116.3050 1347 4/74 --do-­ 

Imperial Valley—— 32.7468 115.5618 -6 1/74 5/76 

Hospital.

Ingram Ranch————— 32.9883 115.3102 2 3/73 Open-­ 

Inspiration—————— 33.9356 116.1943 1700 4/74 —do-­ 

Iron Mountains----- 34.1600 115.1840 980 9/74 —do— 

Kobayashi Ranch—— 33.0402 115.7010 -51 2/75 5/76 

Kubber Ranch————— 32.6868 115.5810 -2 1/74 1/75

Lake deposits; Quaternary. 

Volcanic basalt; Miocene. 

Granitic rock; Precambrian.

—do-- Metasedimentary rock; Mesozoic.

Alluvium; Quaternary. 

Lake deposits; Quaternary. 

Granitic rocks; Quaternary. 

Metasedimentary rocks; Mesozoic.

Quartzite aplite(?); Paleozoic/ 

Mesozoic(?).

Marine sediments; middle Miocene.

Terrace deposit (Quaternary) over 

nonmarine sedimentary rocks 

(Pliocene).

Lake deposits; Quaternary. 

Basic intrusive; Mesozoic. 

Metamorphic rocks; pre-Cretaceous. 

Alluvium; Quaternary. 

Marine sediments; Eocene. 

Alluvium; Holocene.

Sedimentary lake deposits; 

Quaternary.

Do.

Alluvium; Holocene. 

Granitic rock; Mesozoic.

Quartz monzonite or related rock; 

Mesozoic.

Lake deposits; Quaternary.

Do.

Undivided granitic rock (Mesozoic) 

and gneiss (Precambrian).

Metasedimentary rock; Mesozoic. 

Lake deposits; Quaternary. 

Do.

83
SITE INFORMATION--Continued

CALIFORNIA—Continued 

Pasadena, CA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

(KYP) 

(LED) 

(LHU)

Key Point——— 

Lead MountainLake Hughes——

LPC (SBLC) La Cumbre Peak34.1018

34.4677

34.6710

34.4965

(LTC)

LTM

(MDA)

(NWR)

OBB

OCB

(PIC)

(PIU)

(PKM) 

PLT

(PNM) 

(PTD) 

(RMR)

(ROD) 

(RSE)

RUN 

(RVM)

RVS

(RYS)

(SAD)

SGL

(SHH)

(SIP) 

SNR 

SPH

Little Chuckwalla-- 33.4890 

Mountains.

Little MariaMountains .

Mount DavisNew RiverObsidian ButteOcean Bottom—- 

Picacho Peak—-

33.9150

33.9130

33.1017

33.1673 115.6367

34.0367 119.1835

32.9142 114.6432

Piute Mountains—— 34.7403

Peak MountainPilot Knob——

34.8958 119.8188

32.7312 114.7293

Pinto Mountains—— 33.9773 115.8008

Point Dume—————— 34.0042 118.8063

Rimrock————————— 34.2128 116.5753

Rodman Mountain—— 34.6297 116.6048

Rose Pump——————— 32.9255 115.4992

Ruthven————————— 32.9722 114.9772

Rio Vista Mine——— 34.1802 114.2003

Riverside Mountains 34.0347 114.5180

Reyes Peak—- 

Saddle Peak-­ 

Mount SignalSheep Hole—- 

Mountains.

34.6433

34.0810

32.6492

34.1877

Simi Peak——————— 34.2040

Schaffner Ranch—— 32.8618

San Pedro Hill——— 33.7467

118.8795 700 6/73 Open-- Volcanic basalt; Miocene.

115.9365 853 4/74 --do-- Andesitic rock; Miocene.

118.4113 1036 6/76 --do-- Granite and adamellite; Mesozoic.

119.7135 1190 11/69 —do— Marine rocks; Eocene.

115.0700 458 4/74 --do-- Granitic rock; Precambrian.

114.9183 744 4/74 —do— Metasedimentary rock; Mesozoic.

116.9995 845 1/75 --do— Nonmarine sedimentary rocks;

Pliocene.

115.6835 -69 11/76 --do-- Sedimentary lake deposits;

Quaternary.

-59 4/73 --do-- Rhyolite; Holocene.

-75 6/73 10/75 Sea-floor mud.

263 7/75 Open— Nonmarine sediments; Pleistocene.

115.0940 1209 4/74 10/76 Gneiss and granitic rock;

Precambrian.

1704 8/76 Open— Marine sediments; Eocene.

61 3/73 —do— Granitic and metamorphic rocksj,

pre-Cenozoic.

1148 4/74 —do— Metasedimentary rock; Mesozoic. 

40 6/73 —do— Marine sediments; late Miocene.

1702 11/74 —do— Quartz monzonite or related rock;

Mesozoic.

1292 5/76 —do— Nonmarine sediments; Pleistocene.

-41 2/75 —do— Lake deposits; pre-Cenozoic.

151 3/73 —do— Nonmarine sediments; Pleistocene.

243 5/77 —do— Basaltic rocks; Quaternary.

677 4/74 —do— Igneous and metamorphic rock

complex; Precambrian.

119.3513 1841 6/76 —do-- Marine sediments; Eocene.

118.6650 732 8/73 —do— Intrusive basalt; Tertiary.

115.7253 110 3/73 —do-- Nonmarine sediments; Pliocene.

115.6545 1122 4/74 --do-- Metamorphic reck; pre-Cretaceous.

118.7990 700 6/73 --do— Marine rocks; Late Cretaceous.

115.4368 -30 3/73 --do-- Lake deposits; Quaternary.

118.3347 445 7/71 3/74 Marine sediments; middle Miocene.

84
CALIFORNIA—Continued 

Pasadena, CA

SITE INFORMATION--Continued

Code

SPM 

STP

(SUF) 

(SUP)

(TMB) 

TTM 

(WEL) 

WH2

(WHP)

(WIS) 

WLK 

(WML) 

(YEG)

INSTRUMENTATION

Station name

Mountains.

Mountain. 

Temblor Range SE —— 

Turtle Mountains — -

Whipple Mountains-­ 

No. 2.

Whipple Mountains —

Yeguas Mountain— —

Latitude 

(deg N.)

34.4720 

34.5712

34.4097 

32.9552

35.0873 

34.3353 

32.7160 

34.3145

34.3070

33.2760 

33.0513 

33.0152 

35.4363

Longitude Elev Date Date 

(deg W. ) (meters) opened closed

115.4027 

114.8480

119.2025 

115.8238

119.5347 

114.8275 

115.5578 

114.4092

114.4958

115.5930 

115.4907 

115.6225 

119.9593

Seismometer

Code

All stations

Type Component To (sec)

1.0

915 4/74 Open628 4/74 10/76

7/13/73 8/24/73 

220 3/73 Open-- 

1021 6/76 — do— 

1098 4/74 — do— 

-4 1/74 10/75 

1245 10/74 Open606 4/74 10/74

-68 11/76 Open— 

-52 3/73 — do— 

-44 11/76 — do— 

939 8/76 --do—

Galvo Type 

T (sec) recording

0.062 Develocorder

Foundation; geologic age

Granitic rocks; Mesozoic.

Igneous and metamorphic rock complex; 

Precambrian.

Marine sediments; middle Miocene. 

Granitic rocks; Mesozoic.

Marine sedimentary rock; middle Miocene 

Basaltic rock; Tertiary. 

Lake deposits; Quaternary. 

Gneiss; Precambrian.

Gneiss (Precambrian) intruded by 

andesite dikes (Tertiary) .

Lake deposits; Quaternary. 

Do. 

Do. 

Alluvium; Holocene.

Magnification _ . ° _ Remarks at o

Variable Telemetered to Pasadena.

Timing system: WWVB recorded directly on Develocorder. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

The USGS and C.I.T. cooperate in funding and operation of the above-mentioned stations. C.I.T. also maintains another large 

network in this area. The responsibility for the different networks occasionally shifts between C.I.T. and C.I.T.-USGS.

These stations are grouped into five networks; Mojave, Imperial Valley, Carrizo Plain-Palmdale, Dos Cuadros, and Santa 

Barbara-Pt. Mugu.

Mojave network comprises (BC2), CMH, C02, (CPM), EAG, (GRP), (HDG), (INS), (IRN), (LED), (LTC), LTM, (PNM), (RMR), (ROD), 

(RVM), RVS, (SHH), SPM, TTM, and WH2.

Imperial Valley network is composed of AMS, (BON), (CLI), COA, (COK), COT, CRR, (ELR), (FNK), ING, (NWR), OBB, PLT, RUN, SGL, 

SNR, (SUP), (WIS), WLK, (WML), and (FTM) Arizona, (LGA) Arizona, (SLU) Arizona, and (YMD) Arizona.

Carrizo Plain-Palmdale network consists of (ABL), (BCH), (BMT), (CRG), FTC, (LHU), (PKM), (RYS), (TMB), and (YEG).

Santa Barbara-Pt. Mugu network comprises AIC, BCC, BCD, BLG, BLP, BSC, BSM, BSN, (CAM), (ECF), (KYP), LPC, (PTD), (SAD), and 

(SIP).

FTC began operation in November 1952. This station ran until it was closed in the 1960's. The present location is nearly 

identical to that of the old station.

C.I.T. and the USGS publish frequent reports on the data collected through their several networks.

85
CALIFORNIA 

Point Loma, CA

GENERAL INFORMATION 

Operated by: 

Address:

Theosophical University

Theosophical University—Closed

Point Loma, CA

(Obsolete)

Address to obtain records:

Unknown. 

SITE INFORMATION

« j 0 . . . Latitude Longitude Code Station name ,, .... /•_. tl \ (deg N.) (deg W. )

Point Loma —————————— 32.7167 117.2500

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

West astatic pendulum NS,EW 

Custom instrument- —— Z ---

Elev Date Date Foundation; geologic age 

(meters) opened closed

Galvo Type Magnification Remark.!

T (sec) recording at T

——

Timing system: Unknown.

System response curves: Not available.
GENERAL INFORMATION 

Operated by: 

Address:

California Department of Water Resources

California Department of Water Resources 

Earthquake Engineering Office, Rm 216-4 

1416 9th Street 

Sacramento, CA 95814

Telephone: 916-445-8064 

Address to obtain records:

As above.

SITE INFORMATION

CALIFORNIA 

Sacramento, CA

SLD records for 1965-70 also available from:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

,, , Code „. . . Station name

Latitude 

,, ,. , (deg N.)

Longitude 

, , 6 ,. , (deg W.)

Elev /•..-. (meters)

Date

j opened

Date

-, j closed

,, , . . , . Foundation; geologic e age 

CED 

(CSL) 

CSP 

FEA 

KRK 

MGL 

(MRD) 

ORV 

PAM 

PEC 

PYR

SLD

Cedar Springs-—- 

Crestline----- — -

Cedar Springs- —- 

Feather Falls —-- 

Kanaka Peak-——- 

Magalia—- — -- — - 

Mojave River DamOroville-—------

Palermo----------

Perris—---------

Pyramid----—----

San Luis Dam34.2772

34.2497

34.2980

39.6191

39.5833

39.8117

34.6757

39.5556

39.4488

33.8919

34.5680

37.0747

117.3342

117.2783

117.3574

121.2457

121.3053

121.5575

117.2408

121.2167

121.5197

117.1607

118.7411

121.2206

1067

1490

1268

1227

889

1010

969

362

130

616

1247

443

3/65 

4/71 

7/69 

6/66 

1/69 

6/66 

1/72 

8/63 

1/76 

1/70 

7/69

11/65

7/67 

Open—

—do—

1/69

Open—

—do—

—do—

—do—

—do—

—do—

—do—

—-do-­

Granitic rock; Mesozoic.

Do.

Metavolcanics; Triassic. 

Granitic rock; Mesozoic. 

Ultrabasic intrusive rock; Mesozoic-. 

Granitic rock; Mesozoic. 

Metavolcanics; Mesozoic.

Granitic rock; Mesozoic.

Granitic rock, tonalite, diorite; 

Mesozoic.

Franciscan Formation; Jurassic to 

Eocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

CED

(CSL), KPK, 

MGL, (MRD):

CSP 

FEA

BenioffTeledyne SD-210———— 

Sprengnether S-7000— 

Ranger—--- —— ---- — -

1.0

1.0 

1.0 

1.0

Photo paper

Develocorder

Photo paper

Telemetered to Sacramento.

87
INSTRUMENTATION--Continued

Code

ORV

PEC, PYR:

Seismometer

Type Component

Benioff 1051, 1101 —— Z,NS,EW

Geotech 7505, 8700A-- Z,NS,EW

Sprengnether S-7000-- Z,NS,EW

Benioff 4681A —————— Z

Benioff 6102A —————— NS,EW

T o (sec)

1.0

20.0

1.0 

1.0

1.0

1.0

CALIFORNIA— Continued 

Sacramento, CA

Galvo Type Magnification 

T (sec) recording at T

--- Develocorder ---

--do ——————

--do —————— 

--do ——————

.2 --do —————— 100 K

Remarks

Telemetered

Do. 

Do.

Do.

to Sacramento.

Two instruments run at

different magnifications

Timing system: All telemetered stations use an Astrodata 6190 time-code generator and WWVB, recorded directly. 

System response curves: Available from station. 

SHORT HISTORY

FEA, MGL, ORV, and SLD were initiated by the U.S. Bureau of Reclamation in conjunction with dam-building at each of the 

sites. The UGC&GS installed the equipment under a special arrangement with the Bureau. The USC&GS continued to run the stations 

until the Bureau no longer required the stations, at which time the stations were given to the California Department of Water 

Resources in 1968. Telemetering of these stations began at that time.

JAS is funded by the Department of Water Resources and is run jointly with the University of California, Berkeley.
GENERAL INFORMATION 

Operated by: 

Address:

San Bernardino Valley College

Department of Geology 

San Bernardino Valley College 

701 South Mt. Vernon Ave. 

San Bernardino, CA 92403

Telephone: 714-885-0231 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA

San Bernardino, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(SBVC) San Bernardino- 34.0881 117.3105 319 1/72 Open-- Alluvium; Quaternary.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

(SBVC) Geotech 4681, 6102—— Z,NS,EW 1.0 Pen and ink 3.5 K

Timing system: Sprengnether TS-100 checked with WWVB. 

System response curves: Not available. 

SHORT HISTORY

Interest in seismology at the College was sparked by the proximity of the campus to the San Jacinto and San Andreas faults.

89
CALIFORNIA 

San Diego, CA

GENERAL INFORMATION 

Operated by: 

Address:

San Diego State University

Department of Geological Sciences

5300 Campanile Drive

San Diego State University

San Diego, CA 92182

Telephone: 714-286-5586 

Address to obtain '"ecords:

As above. 

SITE INFORMATION

Code

cum

_.. . . Latitude Station name , , ., , (deg N.)Longitude 

(deg W.)

11-7 nAai

Elev 

(meters)

1 OC

Date 

opened

a /(./.

Date 

closed Foundation; geologic age

Tertiary.

INSTRUMENTATION

Code

SND

Seismometer

Type Component

—do ————————————— Z

To (sec)

1.0 

1.0

Galvo 

T (sec) 

g

90 

.2

Type 

recording

Helicorder 

--do — —— -

Magnification

at T 

o

230 K 

7.5 K

Remarks

Magnification at 

Magnification at

40 sec. 

1 sec.

Timing system: Custom quartz crystal clock with WWV recorded on the records. 

System response curves: Not available. 

SHORT HISTORY

SND was established as a teaching station as well as a serious scientific tool.

90
GENERAL INFORMATION 

Operated by: 

Address:

University of California, San Diego

Institute of Geophysics and Planetary Physics 

University of California, San Diego 

San Diego, CA 92110

Telephone: 714-452-2890 

Address to obtain records:

As above. 

SITE INFORMATION

CALIFORNIA 

San Diego, CA

Code „. . . Latitude Station name ,-, .. .. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

(LJC) La Jolla———————————— 32.8633 117.2533 8 1927 Open-- 

(PFO) Pinyon Flat Observatory- 33.6092 116.4553 1280 3/71 --do-­

Consolidated alluvium; Eocene. 

Granite; Mesozoic.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

LJC

PFO

Press-Ewing-

-doZ,NS,EW 10.0 

Z,NS,EW 10.0

Pen and ink-­

Magnetic tape

Station run mainly for 

demonstration.

Timing system: Custom clock checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

LJC was established by Carnegie Institution of Washington and Scripps Institute of Oceanography with two horizontal WoodAnderson's. The station ran under the auspices of C.I.T. until May 1952. It was reinstated at a slightly different location 

and is currently run by the University of California, San Diego.

PFO also operates a three-component laser strainmeter, modified LaCoste-Romberg gravimeter, superconducting gravimeter, 

and several tiltmeters.

91
CALIFORNIA

San Francisco, CA

GENERAL INFORMATION 

Operated by: 

Address:

Golden Gate Park

Natural Science Curator

Josephine D. Randall Junior Museum

199 Museum Way

San Francisco, CA 94114

Telephone: 415-863-1399 

Address to obtain records:

As above. 

SITE INFORMATION

Code

C1TM

„. . . Latitude Station name ,, ... (deg N.)Longitude 

(deg W.)

m /. -JAO

Elev 

(meters)

i m

Date 

opened

1 OAO

Date 

closed Foundation; geologic age

•

Jurassic to Eocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

SFM Bosch-OmoriWilson-Lamison------- NS

Smoked paper

Pen and ink

Telemetered to San 

Francisco State University and recorded 

on Helicorder.

Do.

Timing system: Chronometer checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

The instruments are used principally for display.

92
CALIFORNIA 

Santa Clara, CA

GENERAL INFORMATION 

Operated by: 

Address:

University of Santa Clara

Ricard Memorial Observatory—Currently closed 

University of Santa Clara 

Santa Clara, CA 95053

Telephone: 408-984-4533 

Address to obtain records:

As above. 

SITE INFORMATION

Code

SCL

„. . Latitude Station name , , .. , (deg N.)

Santa Clara (Ricard)---- 37.3500

Longitude 

(deg W.)

121.9500

Elev 

(meters)

28

Date 

opened

1909

Date 

closed

mid-1950's

Foundation; geologic age

Sand and gravel.

INSTRUMENTATION

Seismometer

Code

SCL

Type Component T (sec)

NS,EW 1.0

Galvo Type Magnification p , 

m /• -v j • *. rri i\emarK& T (sec) recording at T

--- Photo paper --- --- 

--do ————— 

--do —————

Timing system: Weichert clock.

System response curves: Not available.

SHORT HISTORY

The station had only the Weichert instruments when it began under the direction of Jerome S. Ricard. Data were contributed 

to the Jesuit Seismological Association Bulletin. The station is currently inoperative, although it still has the instruments. 

Scientific research is no longer conducted in the building where the instruments are kept.

93
CALIFORNIA 

Ukiah, CA

GENERAL INFORMATION 

Operated by:

Address: 

Telephone:

National Oceanic and Atmospheric Administration 

for the U.S. Geological Survey

Latitude Observatory 

432 Observatory Avenue 

Ukiah, CA 95428

707-462-2208

Address to obtain records:

Records through 1974:

National Geophysical and Solar-Terrestrial

Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Records since 1974: *

National Earthquake Information Service 

Stop 967, Box 25046, Denver Federal Center 

Denver, CO 80225

SITE INFORMATION

Code Station name

UKI Ukiah ---- —— —— ------

Latitude 

(deg N.)

—— 39.1372

Longitude 

(deg W.)

Elev 

(meters)

199

Date 

opened

9/31

Date 

closed Foundation; geologic age

INSTRUMENTATION

Seismometer Galvo Type Magnification »«,„,,, ..to

Code

UKI

Type Component T (sec) T (sec) recording at T

NS.EW 11 1.652 Photo paper

Z —— —— __ do —————

Timing system: Quartz crystal chronometer checked with WWV daily. 

System response curves: Not available. 

SHORT HISTORY

Latitude Observatory was originally equipped with Bosch-Omori instruments installed by the USC&GS. In 1953, the McCombRomberg instruments were installed; they were followed by installation of the Wilson-Lamison in 1956. The University of California 

at Berkeley assisted in these installations and, in 1965, installed a Benioff vertical instrument; it was removed in 1973.

94
GENERAL INFORMATION 

Operated by: 

Address:

Sandia Laboratories

Sandia Laboratories 

Albuquerque, NM 87115

Telephone: 505-264-1468 

Address to obtain records:

Not generally available. 

SITE INFORMATION

CALIFORNIA 

Albuquerque, NM

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

DAC Darwin- 36.2770 117.5937 1433 6/60 Open-- Keeler Canyon Formation (limestone); 

Pennsylvanian and Permian.

INSTRUMENTATION

Code

DAC

Type

Benioff 1051 —— --

Benioff 1101 -----

XT/-1 /"1 0017

Seismometer

Component T (sec)

——— Z 1.0 

—— 54°, 144° 1.0

—— - 53.5°,143.5° .8

Galvo 

Tg (sec)

0.2 

.2

Type Magnification „ , **.. s _ Remarks recording at T

Magnetic tape 

--do ———————

--do ——————— 

--do ———————

--do —— 

__ do ———

— do ———

Timing system: IRIG recorded directly at central recording site. 

System response curves: Not available. 

SHORT HISTORY

This station is part of a network surrounding the Nevada Test Site. It is used for recording scheduled explosions and 

does not operate all the time. It is controlled remotely from the test site and is sometimes recorded by the USGS in Las Vegas. 

Data are not available to the public.

95
GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

CALIFORNIA 

Garland, TX

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(BF-CL) Bakersfield—————————— 35.6481 118.8575 567

(BP-CL) Bishop—————————————— 37.3600 118.6903 2317

(CP-CL) Campo——————————————— 32.7289 116.3711 1189

(DV-CL) Death Valley—————————— 35.8333 116.1017 792

(KM-CL) Kramer————————————— 34.8811 117.2567 853

(ML1CL) Mono Lake——————————— 37.8806 118.8494 2512

(ML2CL) --do———————————————— 38.0806 119.2442 2987

(ML3CL) --do———————————————— 37.5494 118.8153 2512

(ML4CL) --do———————————————— 38.3058 119.5536 2195

(MV-CL) Marysville———————————— 39.2131 121.2931 183

(ND-CL) Needles————————————— 34.5992 115.5514 366

(TF-CL) Taft——————————————— 35.1636 119.9675 793

(TN-CL) Twentynine Palms---——- 34.1983 115.9500 533

(YR-CL) Yreka——————————————— 41.6353 122.7539 914

10/28/61 11/06/61

1/08/62 ft/23/62

4/19/63 7/09/63

4/15/68 4/26/68

4/16/63 

8/27/66 

4/13/68 

8/29/69 

5/08/73

10/10/61

10/26/65

2/26/66

8/01/67

4/18/68

7/18/63

9/09/66

ft/26/68

10/10/69

5/22/73

3/01/64

11/13/65

3/12/66

8/06/67

ft/26/68

12/29/61 1/20/62

4/29/63 

1/14/64 

2/25/66 

4/15/68

8/22/66 

8/24/66 

8/25/66 

8/23/66

10/18/61 

3/01/66

4/17/63 

4/11/68

5/23/62 

10/24/65

7/10/63 

3/21/64 

3/12/66 

ft/26/68

8/26/66 

9/09/66 

9/09/66 

9/09/66

3/10/64 

3/12/66

6/07/63 

4/26/68

5/12/63 

11/13/65

2/01/62 5/03/62

10/25/65

8/01/67

8/30/68

11/13/65 

10/06/67 

9/09/68

Granite.

Metamorphics.

Granitic batholith; Mesozoic.

Metamorphics. 

Dolomite.

Shale. 

Sandstone. 

Granodiorite. 

Volcanics.

Metamorphics.

Folded sandstone; Cretaceous.

Limestone.

96
INSTRUMENTATION

CALIFORNIA—Continued 

Garland, TX

Seismometer Galvo Type Magnifi

Code Type

(BF-CL), (BP-CL),

(CP-CL) (1st, 2d,

and 4th oper. ) ,

(KM-CL), (MV-CL),

(ND-CL), (TF-CL),

(YR-CL): Benioff-- —— -

Component T (sec) T (sec) recording at

• —— Z,NS,EW 1.0 —— Magnetic tape, (BF-CL)

35-nun film. (BP-CL)

(CP-CL)

(KM-CL)

(MV-CL)

(ND-CL)

(TF-CL)

oper. )

(YR-CL)

cation n , 

_ Remarks

o

: 450 K

: 120 K

: 215 K

: 500 K

: 225 K

: 150 K

(2d

: 120 K

: 246 K

(BF-CL) (2d 

oper.), (DV-CL), 

(TN-CL):

(BF-CL) (4th 

oper.), (BP-CL) 

(last 3 oper.), 

(CP-CL) (3d and 

5th oper.), 

(KM-CL) (last 2 

oper.), (MV-CL) 

(2d oper.), 

(ND-CL) (2d 

oper.), (YR-CL) 

(3d oper.):

Sprengnether---- Z,NS,EW

Benioff- Z,NS,EW

20.0

1.0

-do-

-doGeotech S-13——— Z,NS,EW

Geotech-

(BP-CL) (2d

oper.), (ML1CL),

(ML2CL), (ML3CL),

(ML4CL): GeotechZ,NS,EW

Z,NS,EW

1.0

20.0

1.0

Magnetic tape

-do-

(DV-CL): 440 K 

(TN-CL): 250 K

(BF-CL): 

(CP-CL): 

(KM-CL): 

(MV-CL): 

(ND-CL):

450 K 

215 K 

500 K 

225 K 

150 K

(ML2CL): 280 K

(ML3CL): 300 K

(ML4CL): 250 K

Portable system.

Do.

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

97
CALIFORNIA 

Palisades, NY 

GENERAL INFORMATION

Operated by: Lamont-Doherty Geological Observatory 

of Columbia University

Address: Department of Seismology

Lamont-Doherty Geological Observatory 

Columbia University 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

Code

OBS

Station name

Seismometer.

Latitude 

(deg N.)

Longitude 

(deg W.)

124.9067

Elev 

(meters)

-3840

Date 

opened

1966

Date „ , . 

, Foundation; geologic age closed

1972

INSTRUMENTATION

Code

OBS

Seismometer

Type Component

Z,NS,EW

Z,NS,EW

Galvo Type Magnification

T (sec) T (sec) recording at T

0 g 0

1.0 —— —— ---

15.0

Remarks

Recorded on shore.

Do.

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

This experimental ocean-bottom system was operated remotely from shore.

98
CALIFORNIA 

Reno, NV

GENERAL INFORMATION 

Operated by: 

Address:

University of Nevada

Seismology Laboratory 

Mackay School of Mines 

University of Nevada 

Reno, NV 89507

Telephone: 702-784-4975 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed

„ , . . , . Foundation; geologic age

(AVC) Adobe Valley —— —— -

HBM Hobart Mills ————————— 39.4017 120.1533 1804 —— 4/73 Volcanics.

———— 39.4267 120.1633 1804 4/73 Open-- Do.

———— 39.5068 120.2118 2079 4/73 --do-- Do.

———— 39.2957 120.0302 2484 4/73 --do-- Granite.

———— 39.2675 120.2358 2438 4/73 --do-- Do.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

All stations Mark L-4C- 1.0 Magnetic tape Variable Telemetered to Reno.

Timing system: Sprengnether TS-210 digital chronometer. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations are used for local seismicity studies.

99
GENERAL INFORMATION

Operated by:

Address:

U.S. Coast and Geodetic Survey for 

the U.S. Bureau of Reclamation

U.S. Coast and Geodetic Survey

Washington, DC

(Obsolete)

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

CALIFORNIA 

Washington, DC

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

SHS Shasta Dam- 40.6950 122.3883 312 7/42 1953 Copley Greenstone (meta-andesite); 

Devonian.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

Tg (sec)

Type Magnification _ , 3 * , m Remarks recording at T

SHS Benioff- Z,NS,EW 1.5 35-mm film

Timing system: Chronometer with WWV, automatically checked several times a day. 

System response curves: Not available. 

SHORT HISTORY

SHS was part of the U.S. Bureau of Reclamation's "Central Valley" project. It is just below the confluence of the 

Sacramento and Pit Rivers near Reading, Calif.

100
COLORADO 

Boulder, CO

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

National Oceanic and Atmospheric Administration

NOAA/EDS, D62 

Boulder, CO 80302

303-499-1000

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 968, Box 25046, Denver Federal Center

Denver, CO 80225

SITE INFORMATION

„ , _ Latitude Longitude Code Station name . - /•_• ,7 -v (deg N.) (deg W. )

(ALC) Alamosa —————————————— 37.4800 105.8500

CGC Craig ———————————————— 40.5233 107.5500

TDC Trinidad ————————————— 37.2536 104.3347

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

All stations Sprengnether or------ Z 1.0 

Johnson-Ma the son.

Elev Date Date _ , . 

, , , Foundation; geologic age (meters) opened closed

1925 1970 11/72 - — 

2340 1970 11/72 —— 

2010 1970 11/72 

1790 1970 11/72 —— 

1750 1970 11/72 ---

Galvo Type Magnification Remarks

T (sec) recording at T 

g °

--- Pen and ink --- Three stations telemetered to Boulder.

Timing system: Sprengnether TS-110. 

System response curves: Uncalibrated. 

SHORT HISTORY

This array was used to study the crustal and upper mantle structure of Colorado.

101
COLORADO 

Boulder, CO

GENERAL INFORMATION 

Operated by: 

Address:

University of Colorado

Department of Geology 

University of Colorado 

Boulder, CO 80302

Telephone: 303-492-8141 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

—— 40..0083

Longitude 

(deg W.)

105.2708

Elev 

(meters)

1654

Date 

opened

12/53 

10/65

Date 

closed

1959 

1968

Foundation; geologic age

Pierre Shale; Cretaceous.

INSTRUMENTATION

Code

BOU

Seismometer

Type Component T (sec) 

o

Benioff MC ————————— Z.NS.EW 1.0

UED ——————————————— Z.NS.EW 1.5

Galvo Type Magnification

T (sec) recording at T 

g °

Remarks

When station reactivated, 

used photo paper. 

Operated only for a short 

time.

Timing system: Sprengnether TS-100.

System response curves: Available with records.

SHORT HISTORY

BOU operated from 1954 to 1959; it was then reactivated in 1965 to monitor the Derby earthquakes. The Benioff seismometer 

is not the standard variable-reluctance type, but is a moving coil version developed by Benioff before he developed the instrument commonly called the "Benioff" seismometer.

The NEIC also ran a station across the street from BOU from mid-1972 to August 1974.

102
GENERAL INFORMATION 

Operated by: 

Address:

Regis College

Regis College 

50th and Lowell 

Eenver, CO 80221

Telephone: 303-433-8471 

Address to obtain records:

As above.

Until 1964, only records with earthquakes on them were preserved. 

SITE INFORMATION

COLORADO 

Denver, CO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

DEN Denver- 39.7917 105.0333 1655 8/1909 Open-­ Partially consolidated shale 

(Denver Formation).

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

DEN Sprengnether-

-doZ,NS,EW

Z.NS.EW

1.0

25.0

1.0 Photo paper

30.0 --do-------

40 K

4 K

Also recorded on Helicorder (magnification 

80 K). 

Do.

Timing system: Sprengnether TS-100 Chronometer timed with WWVB. 

System response curves: Not available. 

SHORT HISTORY

The Jesuit Seismological Association started DEN in 1909 with a Wiechert. Long-period Sprengnethers were installed in 

1946 (20-sec NS,EW). Newer models (long- and short-period) were installed in 1963. The station contributes data to the 

Jesuit Seismological Association Report.

103
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Earthquake Information Service

Stop 967, Box 25046

Denver Federal Center

Denver, CO 80225

Telephone: 303-234-3994 

Address to obtain records:

GLD records kept at:

National Earthquake Information Service 

Stop 967, Box 25046 

Denver Federal Center 

Denver, CO 80225

RBC records kept at:

Environmental Research Laboratories 

3060 South Highland Drive 

Las Vegas, NV 89109

COLORADO 

Denver, CO

U.S. Geological Survey 

Engineering Geology Branch 

Stop 903, Box 25046 

Denver Federal Center 

Denver, CO 80225

303-234-3721

SIG records kept at:

Colorado School of Mines 

Green Center 

Golden, CO 80401

SMC records kept at:

U.S. Geological Survey 

Engineering Geology Branch 

Stop 903, Box 25046 

Denver Federal Center 

Denver, CO 80225

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

GLD

RBC 

SIG 

SMC

GoldenRio Blanco---- 

South IngallsSomerset—----

39.7506 105.2214 1762 1974 Open--

39.8425 108.3922 1996 1/73 12/73

39.6878 105.0647 —— —— 8/65

38.9333 107.4578 1905 7/69 Open-­

Denver and Arapahoe Formations; 

Cretaceous and Tertiary.

Mesaverde Formation (sandstone); 

Late Cretaceous.

INSTRUMENTATION

Code

r*T n

RBC

SIG

SMP

Seismometer

Type Component T (sec)

EV-300 ——————————— Z 15.0

Ma»-lr T -A---- —— —— —— —— - 7 1 £

Galvo Type Magnification v-mxr-k*

T (sec) recording at T

—do ———— 540

--- --- --- Temporary stations set 

up in an array.

--- Pen and ink --- ---

104
COLORADO—Continued 

Denver, CO

Timing system: GLD uses a Teledyne-Geotech TG-120 digital timing system. SMC uses an electronic chronometer synchronized 

with WWV.

System response curves: GLD--available from station. 

SHORT HISTORY

NE1S moved from Boulder to Golden, Colo., in August 1974 and established the GLD site using instruments from the 

Boulder site. (See Colorado, Boulder, CO Short History).

Colorado School of Mines also runs instruments at GLD; they are used chiefly for display. 

RBC was instituted as an array to monitor an atomic explosion designed to release natural gas. 

SIG was operated informally by Jerry Eaton, a USGS employee, in his back yard. 

NEIS telemeters data from selected stations run by the following organizations:

California Department of Water Resources

California Institute of Technology

Delaware Geological Survey

Ford Aerospace and Communications Corporation

Lamont-Doherty Geological Observatory

Lawrence Livermore Laboratory

St. Louis University

University of California, Berkeley

University of Connecticut

University of Nevada

University of Utah

University of Washington

U.S. Air Force, Patrick AFB

USGS in Arizona, California, New Mexico, South Carolina, Texas, Utah, and Washington

Weston Observatory

105
GENERAL INFORMATION 

Operated by: 

Address:

Colorado School of Mines

Geophysics Department 

Colorado School of Mines 

Golden, CO 80401

Telephone: 303-279-0300 ext. 262 

Address to obtain records:

As above. 

SITE INFORMATION

COLORADO 

Golden, CO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

COL Golden (Bergen—————— 39.7003 105.3711 

Park).

HDQ Headquarters———————— 39.5583 105.0792 

HLR Highlands Ranch—————— 39.5372 104.9744

(TLD) Tule Lake Drive—————— 39.6139 105.0497

WTC (MMV) Waterton (Martin————— 39.5143 105.1375 

Marietta Vault).

(WTN) Waterton——————————— 39.4994 105.0875

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

GOL Benioff 1051—————— Z 1.0

Benioff 1101——————— NS.EW 1.0 

Sprengnether--------- Z,NS,EW 30.0

Wood-Anderson-- —— —— NS,EW .8 

HDQ Geotech 18300—————— Z 1.0

HLR --do————————————— Z 1.0

TLD --do————————————— Z 1.0

WTC __<j 0 ________—————— i i o

WTN --do————————————— Z 1.0

2359 12/21/61 Open—

1683 1/73 11/30/76

1782 1/73 11/30/76

1663 1/73 11/30/76

1987 1/73 11/30/76

1668 1/73 11/30/76

Schists and gneiss, Idaho Springs 

Formation; Precambrian.

Alluvium; Quaternary.

Denver and Arapahoe Formations; 

Cretaceous and Tertiary.

Do.

Schist and gneiss, Idaho Springs 

Formation; Precambrian.

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

0.75 Photo paper 200 K

.75 --do————— 200 K

100.0 --do————— 1.5 K

	--do————— 2.8 K 

.0625 Microfilm 500 K

.0625 --do——— 1500 K

.0625 —do——— 1500 K

.0625 —do——— 2500 K

.0625 --do——— 250 K

WWSSN. Magnification 

increases to 400 K 

during the summer. 

Do.

WWSSN. Magnification at 

15 sec.

Nonstandard instrument.

Telemetered to GLD. Magnification at 0.1 sec.

Do. 

Do. 

Do. 

Do.

106
COLORADO—Continued 

Golden, CO

Timing system: GOL uses a WWSSN standard. All other stations used a General Radio Corporation type 1103B Synchronometer 

in conjunction with a modified Sprengnether TS-100 clock.

System response curves: GOL--see figure 1, p.363.(Note: Long-period WWSSN instrument not standardized to 15.0-sec period.) 

Others available from station.

SHORT HISTORY

GOL was started with the establishment of the WWSSN System. The station possesses the most inclusive library available 

for the earthquakes in the vicinity of the Rocky Mountain Arsenal Disposal Well in northeast Denver (Derby).

HDQ, HLR, TLD, WTC, and WTN were all part of the Chatfield Network, which was constructed under contract with the 

U.S. Army Corps of Engineers beginning in September 1972.

107
GENERAL INFORMATION 

Operated by: 

Address:

Chevron Oil Company

Chevron Oil Company 

Rangely Oil Field 

Rangely, CO 81648

Telephone: 303-675-2244 

Address to obtain records:

As above. 

SITE INFORMATION

COLORADO 

Rangely, CO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

RGC Rangely- 40.1042 108.9270 1610 2/1/75 Open-- Mancos Shale; Cretaceous.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

RGC Mark L-4- 1.0 Pen and ink An array of three instruments within a 

radius of 5 km.

Timing system: Clock set daily by WWV. 

System response curves: Not available. 

SHORT HISTORY

Field seismometers were installed in Rangely by the USGS for experiments. When the tests were completed, Chevron 

installed the present recording equipment.

108
COLORADO 

Trinidad, CO

GENERAL INFORMATION

Operated by: Trinidad State Junior College

Address: Department of Science and Mathematics 

Trinidad State Junior College 

Trinidad, CO 81082

Telephone: 303-846-5516 

Address to obtain records:

As above. 

SITE INFORMATION

„ , „ Latitude Longitude Elev Date Date „ , . . , .

Code Station name /•_,„•» fJ ,, >, / > . -, j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

TJC Trinidad State——-—---- 37.2169 104.6912 2103 10/65 Open— Poison Canyon Formation (lower 

Junior College. beds); Paleocene.

INSTRUMENTATION

Seismometer

Code

TJC

Type Component T (sec)

Galvo 

Tg ( S ec)

5.0 

5.0 

30.0

Type Magnification _ . Jr „ Remarks recording at T

35-mm film 100 K ---

--do — —— -

--do —————

Timing system: Geotech model 5400A.

System response curves: Available from station.

SHORT HISTORY

TJC opened in Boncarbo, Colo., under supervision of the USGS Seismology Branch, headquartered in Denver. Operating and 

maintenance personnel were then and are still supplied by Trinidad State Junior College, located in Trinidad. Funding for 

the project was supplied by Colorado School of Mines, located at Golden, for the first 2 years. Present funding is received 

from the State of Colorado.

109
COLORADO 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(DR-CO) 

(FK-CO)

Station name

Latitude 

(deg N.)

—— 37.4647

OO C Q£ "7

Longitude 

(deg W.)

107.7833 

104.4617

Elev 

(meters)

2225 

1803

Date 

opened

10/01/61 

11/17/66

Date 

closed

12/30/64 

6/26/67

Foundation; geologic age

Granitic basement; Precambrian.

INSTRUMENTATION

Code

(DR-CO), (FK-CO):

Seismometer

Type Component T (sec)

Benioff —————— Z,NS,EW 1.0

Cnvonnnoi-hoT----- 7 XTC I?U OO f\

Galvo Type Magnification _ , 

a. i i j. ^ a. Remarks T (sec) recording at T

—— Magnetic tape, DR-CO: 350 K — — 

35 -mm film.

--- __<4 n -_-------- --- ---

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

110
GENERAL INFORMATION

COLORADO 

Menlo Park, CA

Operated by: U.S. Geological Survey

Address: U.S. Geological Survey 

National Center for Earthquake Research 

345 Middlefield Road 

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2632 

Address to obtain records: 

As above . 

SITE INFORMATION

Code

(COB) 

(DDG) 

(DHV) 

(DHS) 

(DPN) 

(DPS) 

(HDW) 

(LCD) 

(MEL) 

(ONE) 

(RAD) 

(RDG) 

(RVR) 

(SEC) 

(SHV) 

(SIX) 

(SWC)

(TYC\

Station name

Dead Dog ————————— -

--do ————————————— -

Melon Hill ———————— -

Latitude 

(deg N.)

--- 40.0987

•-- 40.1445

•-- 40.0975

•-- 40.0935

•-- 40.0612

•-- 40.0117

•-- 40.0737

--- 40.0903

•-- 40.1552

•-- 40.0845

•-- 40.1270

•-- 40.1042

•-- 40.0813

•-- 40.0983

•-- 40.0160

•-- 40.0878 

•-- 40.0975

. __ /. n noAo

Longitude 

(deg W.)

108.8995 

108.8215 

108.8735 

108.9037 

108.7837 

108.7787 

108.9567 

108.7278 

108.9395 

108.8962 

108.9492 

108.9270 

108.9222 

108.9143 

108.8975 

108.8775 

108.8735

mo QQoi;

Elev 

(meters)

1643 

1831

1661 

1795 

1725 

1868 

1679 

1722 

1652 

1856 

1768 

1649 

1687 

1916 

1616 

1617

i AQO

Date 

opened

11/69 

10/69 

5/70 

5/71 

9/69 

9/69 

10/69 

6/69 

5/70 

9/69 

9/69 

9/69 

9/69 

9/69 

10/69 

9/69 

5/70

o / £n

a e . Foundation; geologic age

11/73

12/72 

11/73 

3/74 

11/73 

3/74 

3/74 

11/73

3/74 

3/74 

3/74 

12/72 

3/74 

3/74 

11/73

111
COLORADO--Cont inued 

Menlo Park, CA 

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification

T (sec) recording at TQ

magnetic tape.

Timing system: Custom clock with WWVB also recorded. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

This network was established to monitor the effect of fluid injection on the Rangely Oil Field. A small part of the 

network was turned over to Chevron Oil Company when the study was complete.

(DHV) also had a horizontal seismometer which was recorded under the code DHH.

(MEL) and (RDG) were also recorded at low gain and these records were designated by MHL and RDL, respectively.

112
CONNECTICUT 

Hartford, CT

GENERAL INFORMATION

Operated by: Trinity College V

Address: Science Department 

Trinity College 

Hartford, CT

Telephone: 203-527-3151 

Address to obtain records:

Unknown 

SITE INFORMATION

„ , _ Latitude Longitude Elev Date Date „ , -

Code Station name , . xr . , , ,, ^ , -, j ., _, Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

HAR Hartford———————————— 41.7500 72.6833 —— 1947 1954 —-

INSTRUMENTATION

__________________Seismometer__________________ Galvo Type Magnification

Code Type Component T (sec) T (sec) recording at T

o g o

HAR Linehan-Arringdale—- Z.NS.EW --- —— —— ---

Timing system: Not available.

System response curves: Not available.

Remarks

113
CONNECTICUT 

New Haven, CT

GENERAL INFORMATION 

Operated by: 

Address:

Yale University

Seismograph Station--Closed

Peabody Museum

Yale University

New Haven, CT

(Obsolete)

Address to obtain records:

No longer exist. 

SITE INFORMATION

Code

uur

_ . Latitude Station name , . (deg N.)Longitude 

(deg W.)

T> annn

Elev 

(meters)

Date 

opened

1 QO^

Date 

closed Foundation; geologic age

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo 

Tg (sec)

Type Magnification 

recording at T

Remarks

NHC Bosch-Omori- NS,EW

Timing system: Not available.

System response curves: Not avsilable.

114
CONNECTICUT 

Weston, HA

GENERAL INFORMATION 

Operated by: 

Address:

Weston Observatory, Boston College

Weston Observatory 

Concord Road 

Weston, HA 02193

Telephone: 617-899-0950 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

APT

BCT

BPT

CPL

ECT

HDM

NSC

THT

UCT

Avery Point -----------

Brookfield ————————

Bridgeport ——— —— ————

Chaplin -----------------

Ellsworth —————-——-

Haddam —————————

North Stonington --------

Talcott Mountain --------

University of -----------

Connecticut (Storrs).

41 .3160

41.4933

41

41

41

41

41

41

41

.2221

.7890

.8346

.4858

.4807

.8114

.8317

72.

73.

73.

72.

73.

72.

71.

72.

72.

0639

3839

2422

1073

4113

5232

8516

7989

2506

3

69

83

161

342

24

110

290

149

1/07/72

6/10/75

1/07/72

1/19/72

1/28/76

12/23/74

6/27/77

1/07/72

11/05/74

6/10/77

Open —

6/10/77

7/23/74

Open —

— do—

— do—

6/10/77

Open —

Stonington Gneiss of Martin

(1925) l ; Paleozoic.

Brookfield Diorite Gneiss of

Gregory (1906) 2 ; early Paleozoic.

Straits Schist; Paleozoic.

Eastford Gneiss; Devonian or Silurian.

Granite schist; Paleozoic.

Haddam Granite Gneiss; Paleozoic.

Metavolcanics and gneiss; Ordovician

Holyoke Basalt; Triassic.

•

Brimfield Schist; Ordovician or older.

Martin, L. H. 1925, Geology of the Stonington region, Connecticut: Connecticut Geol. and Nat. History Survey Bull. 33, 70 p. 

2Gregory, H. E., 1906, The Crystalline rocks of Connecticut: Connecticut Geol. and Nat. History Survey Bull. 6, p. 39-156. 

INSTRUMENTATION

Code

tjrT

DPT

rpt

vn

I

Type

Geotech S-13 ——— -

—do ————————— - 

__ do ————————— .

—— An —— ——— ———————— -.

Seismometer

Component

z

TQ (sec)

1.0

1.0

1.0

1.0

1.0 

i n

Galvo Type ^

T (sec) recording

_- do ——————

__ do ________

— do ——— — ———

—do —— ——

___ __sln_----_--

lagnification Remarks

o

1

SQ V

100 K

75 K Do.

130 K Do. 

-\^n v n«

115
CONNECTICUT—Continued 

Weston, MA

INSTRUMENTATION—Continued

Seismometer

Code

HDM

NSC 

TMT 

UCT

Type

Geotech S-13 —— ——

Hall-Sears 10 —— —

__ do ——————————

Component To (sec)

1.0 

1.0 

1.0 

1.0

Galvo Type Magnification 

T (sec) recording at T

--- Develocorder 

—do — —— ——

—do - ——— —

--do — — ——

100 K 

100 K 

100 K 

100 K

Remarks

Telemetered to WES. 

Do. 

Do. 

Do.

Timing system: WWSSN standard added at WES. 

System response curves: Available from station. 

SHORT HISTORY

This network was owned and operated by the University of Connecticut and was temporarily based at Avery Point between 

January 1977 and June 1977. The ownership and operation of the network were assumed by Weston Observatory in June 1977. 

APT had minor instrument changes throughout its operation.

BPT was moved less than 30 m in June 1975 to reduce the higher frequency background noise. 

CPL was moved slightly in January 1973 and burned down on July 23, 1974. 

TMT is located at Talcott Mountain Science Center. 

The Observatory contributes data to the Northeastern United States Seismic Network bulletin.

116
DELAWARE 

Newark, DE

GENERAL INFORMATION 

Operated by: 

Address:

Delaware Geological Survey

Delaware Geological Survey 

101 Penny Hall 

University of Delaware 

Newark, DE 19711

Telephone: 302-738-2833 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Forest.

INSTRUMENTATION

Code Type

(BED) Hall-Sears ——— - 

GTD —do ———————— -

Latitude Longitude 

(deg N.) (deg W.)

- ——— 39.3461 75.6767

• ——— 38.7414 75.4144 

- ——— 39.7042 75.7082

Seismometer

Component T (sec) 

o

Elev Date Date , . . , . 

, . . Foundation; geologic age (meters) opened closed

18 1/01/77 Open-- Columbia Group; Pleistocene. 

15 1/01/77 --do-- Do.

Galvo Type Magnification ,

T (sec) recording at T

--- Pen and ink Uncalibrated "~

Helicorder 15 K

Timing system: Teledyne Geotech 110, transistorized, quartz-crystal controlled. Operates from a 12-V DC battery maintained by 

a trickle charger.

System response curves: NED—available from station. 

SHORT HISTORY

NED began with a vertical-component instrument in November 1970 at 101 Penny Hall. About a year later, the sensor was 

moved approximately 3 km away and telemetered to the University. Telemetry equipment was converted to solar power and batteries 

in November 1974. The station was out of operation for several weeks in late summer-early fall 1974 due to lightening damage.

117
DISTRICT OF COLUMBIA 

Washington, DC

GENERAL INFORMATION 

Operated by: 

Address:

Georgetown University

Physics Department 

Room 506, Reiss Science 

Georgetown University 

37th & 0 Streets, N.W. 

Washington, DC 20057

Telephone: 202-625-4144 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

GEO Benioff 1051---

Benioff 1101---

Latitude Longitude Elev Date Date ,, , . _ , . 

,. „- /• , i r \ j -i j Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed ' 5 6 5

Seismometer Galvo Type Magnification „ ,

Component T (sec) T (sec) recording at T 

o g o

- ———— Z 1.0 0.75 Photo paper 25 K WWSSN.

- ———— NS.EW 1.0 .75 —do ————— 25 K Do.

- ———— Z,NS,EW 15.0 100.0 --do ————— 750 Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

The founder and first director was Rev. Francis A. Tondorf, S.J., who initiated the station's operation in 1911. GEO 

joined WWSSN in 1961.

118
GENERAL INFORMATION 

Operated by: 

Address:

DISTRICT OF COLUMBIA 

Washington, DC

Carnegie Institution of Washington

Carnegie Institution of Washington 

5241 Broadbranch Road, N.W. 

Washington, DC 20015

Telephone: 202-966-0863 

Address to obtain records:

Unknown. 

SITE INFORMATION

Code

uirn

Latitude Station name , . „ .. (deg N.)

RoiH i?o«i o------__- ____ QR Bonn

Longitude 

(deg W.)

T? nnoa

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

DTM Carnegie Institute————— 38.9567 77.0644 67 --do--

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo 

Tg (sec)

Type Magnification 

recording at T

Remarks

Both stations

Tiaing system: Not available.

System response curves: Not available.

119
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

National Earthquake Information Center (NEIC)

National Earthquake Information Center—Closed 

Washington Science Center 

Rockville, MD 

(Obsolete)

None

Address to obtain records:

NRL records not available.

SITE INFORMATION

DISTRICT OF COLUMBIA 

Rockville, MD

WAS records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed

Foundation; geologic age

WAS

Naval ResearchLaboratory.

Washington38.8333 77.0833

38.8925 77.0331

1953

1909

1972

1969

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

Tg (sec)

Type Magnification „ . 

,. „ Remarks recording at T

Both stations Johnson-Matheson----- Helicorder Uncalibrated NRL telemetered to WSC.

Timing system: Sprengnether clock checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

NRL was owned and operated by the U.S. Bureau of Standards. In 1967, NEIC began telemetering this station and recorded 

it on Helicorder. The U.S. Bureau of Standards recorded their stations on Develocorder film, but this set of records was subsequently discarded.

WAS was located in the Commerce Building, 14th and Constitution, and was on display in the lobby. It closed when the 

USC&GS moved its headquarters to the Washington Science Center. (See WSC).

120
FLORIDA 

Garland, XX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(BE-FL) Belleview ----------

(OR-FL) Orlando —— —— ——— ——

Latitude 

(deg N.)

—— 28.9053

—— 28.4669

Longitude 

(deg W.)

82.0644

81.2214

Elev Date 

(meters) opened

21 10/07/65

1/17/68

8/21/69

9/23/71

5/07/73

20 5/14/63

Foundation; geologic age

1/16/67 Limestone.

1/19/68

10/10/69

11/09/71

5/22/73

9/15/63 Unconsolidated sand.

INSTRUMENTATION

Seismometer

Code

(BE-FL), (OR-FL):

(BE-FL) (last 4 

oper . ) :

(OR-FL):

Type

Sprengnether---- 

Geotech S-13----

Benioff ---------

Component

Z,NS,EW 

Z,NS,EW

Z,NS,EW 

Z,NS,EW

Z,NS,EW

To (sec)

1.0 

20.0

1.0 

20.0

1.0

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape, (BE-FL): 25 K 

35-mm film.

--do ———————

—— Magnetic tape —— Portable system. 

--- .-do--------- —— Do.

Magnetic tape, (OR-FL): 40 K 

35-mm film.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3. p. 364.

SHORT HISTORY

i

The LRSM program began in I960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

121
FLORIDA 

Washington, DC

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Department of the Navy

Office of Naval Research 

U.S. Department of the Navy 

Washington, DC 20375

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

MIA Miami --------- ————

Latitude 

(deg N.)

—— 30.4167

—— 25.9167

Longitude 

(deg W.)

81.6500

80.3000

87.0167

Elev 

(meters)

9

Date 

opened

1950

1945

1949

Foundation; geologic age

1956

1956 

1956

INSTRUMENTATION

c

Code Type

--do —————————— -

Seismometer

Component T

0

1. 

6.

(sec)

0-2.0

0-10.0

Galvo Type Magnification D ,

T (sec) recording at T

Timing system: Unknown.

System response curves: Not available.

SHORT HISTORY

The Navy was interested in trying to track hurricanes by monitoring microseisms. Data from this network through 1956 are 

on file as stated above; MIA records only date back to 1949, however, even though the station began operating in 1945.

122
GENERAL INFORMATION 

Operated by: 

Address:

Georgia Southwestern College

Physical Science Department 

Georgia Southwestern College 

Americus, GA 31709

Telephone: 912-928-1245 

Address to obtain records:

As above. 

SITE INFORMATION

GEORGIA 

Americus, GA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

AMG Americus- 32.0594 84.2177 106 9/01/73 Open— Unconsolidated clayey sand; 

late Eocene.

INSTRUMENTATION

Seismometer

Code

AMG

Type

Benioff 1051 ———— -

Component T (sec)

1.25 

15.0 

15.0

Galvo Type Magnification n . 

n, , ^ ,. ^T Remarks T (sec) recording at T

0.75 Heat-sensitive

--do --------

--do --------

20 K

2 K

Timing system: Geotech TG-110.

System response curves: Available from station.

SHORT HISTORY

AMG started with the vertical short-period seismometer, and the NS and EW long-period instruments were added in 

September 1974. The vertical long-period seismograph became operational in September 1975.

123
GENERAL INFORMATION 

Operated by: 

Address:

Georgia Institute of Technology

School of Geophysical Sciences 

Georgia Institute of Technology 

Atlanta, GA 30332

Telephone: 404-894-2860 

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

GEORGIA 

Atlanta, GA

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

ATI

CDG 

CHS

CH6

AtlantaCarters Dam33.4333 84.3375

34.6108

Clark Hill Reservoir——— 33.7333 

No. 5.

Clark Hill Reservoir—— 33.8792 

No. 6.

84.6713

82.3250

82.5194

273 6/21/63 Open351

132

146

1/01/75 —do12/75 —do12/75 --do-­

Unseamed granite gneiss; 

Precambrian.

Metamorphic rock: Paleozoic. 

Mafic metavolcanics.

Granite.

INSTRUMENTATION

Code

rT\f*

plTC

CH6

Seismometer

Type Component

Benioff 1051 —————— Z

Benioff 1101 ——————— NS,EW

--do ————————————— NS,EW

Mark L-4C ————————— Z

--do ————————————— Z

Galvo Type

T (sec) T (sec) recording

1.0 .75 --do ------

15.0 100.0 --do -----

15.0 100.0 --do —— — —

1.0 —— --do -------

1.0 —— --do —— ———

Magnification D .

at T 

o

50 K WWSSN.

50 K Do.

3 K Do.

3 K Do.

sec.

25-200 K

Timing system: WWSSN standard is used at ATL, Sprengnether TS-300 is used at CDG, and the TS-250 is used for the Clark Hill 

Reservoir network.

System response curves: ATI—see figure 1, p. 363. Others available from stations. 

SHORT HISTORY

ATL was constructed and maintained by the Engineering Experiment Station at Georgia Institute of Technology until 

June 1973 when it was transferred to the School of Geophysical Sciences.

124
GEORGIA 

Garland, TX

GENERAL INFORMATION

Operated by: Teledyne Geotech

Address: Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

„ , . Latitude Longitude Elev Date Date . .

Code Station name /-,,«•> r* ,, i /• *. i j i -, Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

(LA-GA) Lafayette--------------- 34.8572 85.4500 610 12/03/65 12/13/65 ——

INSTRUMENTATION

Seismometer

Code

(LA-GA) :

Type

Geotech S-13 ———

Component

Z.NS.EW 

Z,NS,EW

T (sec) 

o

1.0 

20.0

Galvo Type Magnification

T (sec) recording at T 

8 °

--- Magnetic tape ---

--do ———————

Remarks

Portable system. 

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

125
HAWAII AND THE PACIFIC 

Ewa Beach, HI

GENERAL INFORMATION

Operated by:

Address:

Telephone:

National Oceanic and Atmospheric Administration 

National Weather Service

Pacific Tsunami Warning Center 

NOAA/National Weather Service 

91-270 Fort Weaver Road 

Ewa Beach, HI 96706

808-689-8207

Address to obtain records:

As above for most records. 

HGLP records:

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center

NOAA/EDS, D62

Albuquerque Seismological Laboratory Boulder, CO 80302 

USGS, Bldg. 10002, Kirtland AFB 

Albuquerque, NM 87115

SITE INFORMATION

Code Station name

BAH (BAR) Barrette ——— — ---

HON Honolulu - — —— ——

KKH Kailua Kona ——— —

KPH Kaena Point —— ——

MOK Mokapu — —— —— ——

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date _ , . , . 

, , XT , /,,, s /^ ^ . , j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

———— 21.3397 158.0772 —— —— 1970 Basalt.

———— 21.3217 158.0083 2 1902 --do-- Coral; Holocene.

Pliocene(?) and Pleistocet

Pleistocene(?) .

———— 19.8267 155.4725 4180 1975 Open-- Laupahoehoe Volcanics; 

Quaternary.

le. 

le. 

and

———— 21.4565 157.7365 90 4/65 --do-- Koolau Volcanic Series; 

Pliocene(?) and Pleistocene.

———— 21.6906 158.0119 150 4/65 --do— Do.

———— 21.6472 158.0278 —— 1960 1965

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

0 g 0

BAH

126
HAWAII AND THE PACIFIC—Continued 

Ewa Beach, HI

INSTRUMENTATION--Continued

Seismometer

Code

HON 

KIP

KKH 

KPH 

MKH 

MOK 

OPA 

PUP

Type

--do ——————————— -

--do ——————————— -

Benioff 4681 ————— -

Benioff 4681 ————— -

--do ——————————— -

--do ——————————— -

Component

Z

NS.EW

To (sec)

1.0 

1.0 

1.0 

15.0

1.0 

1.0 

15.0 

30.0

30.0 

30.0

1.0 

1.0 

1.0 

1.0 

1.0 

1.0

Galvo 

Tg (sec)

——

.2 

30.0

.75 

.75 

100.0 

100.0

100.0 

100.0

.3

.3 

.3 

.3

Type 

recording

Helicorder 

--do ————

--do ————

--do ——————

Photo paper

--do ————— 

--do ————— 

Photo paper, 

Magnetic tape 

--do ——————— 

--do ———————

Helicorder

Helicorder, 

16-mm film. 

Helicorder

--do ————

-_ do ————————

—do —————

Magnification Remarks

at 1 

o

1 K, 10 

1 K, 10 

12.5 K 

1 K, 100 K

12.5 K WWSSN. 

12.5 K Do. 

750 Do. 

45.9 K, 665 HGLP.

37.8 K, 761 Do. 

33.5 K, 611 Do.

1 K 

11 K 

1 K 

11 K 

6.2 K 

12.5 K

Timing system: WWSSN standard.

System response curves: KIP--see figure 3, p. 364, and figure 6, p. 365. Others available from stations.

SHORT HISTORY

The Tsunami Warning System detects and locates major earthquakes in the Pacific region, determines whether they have 

generated tsunamis, and provides timely and effective tsunami information and warnings to the countries that might be 

affected. New instrumental techniques were developed to permit visible recording of earthquakes and triggering of alarms 

for events above a certain magnitude. The first of these instruments were installed at USC&GS observatories in 1947 and 

1948, and the alarms were added in 1950. The initial participating seismic observatories were College and Sitka, Alaska; 

Tucson, Ariz.; and Honolulu, Hawaii. In addition to the four original stations, the system now includes Adak and Palmer, 

Alaska; Berkeley and Pasadena, Calif.; Newport, Wash., and numerous stations throughout the Pacific region.

HON, established in 1902, has been in three locations in the southwest Oahu area: 1902-47—southwest 3 km of Ewa, 

1947-60--at Barbers Point, 1960-present--Ewa Beach.

KIP was started when the WWSSN system was installed.

PUP's instrumentation was moved to OPA when PUP closed in 1965.

127
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

HAWAII AND THE PACIFIC 

Hawaii National Park, HI

U.S. Geological Survey

U.S. Geological Survey 

Hawaii Volcano Observatory 

Hawaii National Park, HI 96718

808-967-7328

Address to obtain records:

As above.

Archives are complete from 1958 to the present. Records before that were kept sporadically. 

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

AHA (AHU)

AIN 

(ALO)

CPH (CAC)

CPK 

(DAN)

DES 

(EKO)

ESR 

(GLN)

HIL

HLK (HAL)

HLP

HPU 

(HSS)

HUH (HUA)

HVO

KAE

KEA (KMO)

KHU 

(KII)

KKU

KLH (KPR)

KLK

KML

KNH (KPN) 

128

Ahua-------------

Ainahou----------

Aloi —————————— - 

Captain Cook-----

Cone Peak--------

Dandelion--------

Desert-----------

East Koae--------

Escape Road------

Glenwood---------

Hilo—————————- 

Haleakala--------

Hilina Pali------

Hale Pohaku------

Humuula----------

Hualalai---------

Hawaiian VolcanoKaena------------

Kealakomo--------

Kahuku-----------

Kaneikii---------

Keanakolu--------

Kapapala Ranch--- 

Kealakekua-------

Kamuela------- — -

Kipuka Nene-—---

19.3733 155.2650 1070 1958 Open-- Basalt; Quaternary or Tertiary.

19.3750 155.4603 1524 4/26/73 --do-- Do.

19.3667 155.2133 963 5/69 4/15/70 Do.

19.4882 155.9182 323 9/20/73 Open-- Do.

19.2950 155.3283 1038 11/67 --do-- Do.

19.3570 155.6673 3003 4/29/76 --do-- Do.

19.3367 155.3883 815 7/58 --do-- Do.

19.3695 155.2498 1009 5/69 9/24/71 Do.

19.4113 155.2388 1177 9/71 Open-- Do.

19.4950 155.1650 732 4/68 4/30/70 Ash (firm soil); Quaternary or Tertiary.

19.7200 155.0883 20 1922 Open-- Basalt; Quaternary or Tertiary.

20.7667 156.2500 2090 9/58 --do-- Do.

19.2993 155.3105 707 9/70 --do-- Do.

19.7808 155.4583 3396 8/18/69 --do-- Volcanic ash.

19.6052 155.4855 2445 7/07/75 --do-- Basalt; Quaternary or Tertiary.

19.6875 155.8387 2189 5/6/71 --do-- Do.

19.4233 155.2933 1240 1912 --do-- Do.

19.2892 155.1325 37 5/8/73 --do-- Pahoehoe basalt; Quaternary or Tertiary.

19.3083 155.1600 201 9/27/66 1969 Do.

19.2483 155.6183 1939 8/26/69 Open-- Basalt; Quaternary or Tertiary.

19.5093 155.7650 1841 7/06/75 --do-- Do.

19.8898 155.3430 1863 3/23/71 --do-- Do.

19.2733 155.4450 610 10/2/69 --do-- Do.

19.5220 155.9203 505 4/65 1/74 Do.

20.0317 155.7000 740 1962 10/30/71 Volcanic ash; Quaternary or Tertiary.

19.3350 155.2900 924 9/21/67 Open-- Pahoehoe basalt; Quaternary or Tertiary.
SITE INFORMATION—Continued

HAWAII AND THE PACIFIC—Continued 

Hawaii National Park, HI

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

KNW 

KOH 

KUH (KAA)

(LUA) 

M12

MKA (MPR) 

MLH (MLO) 

MLX

MVH (MTV) 

MWH (MOK) 

NAA (NAL) 

NBH (NGY) 

NGH (NAG) 

NPH (NPT) 

OUT (OTL) 

PAH (PHA)

(PAX) 

PHH 

PHO 

PPL

PUH (PAU) 

PWH (POL) 

RIM

(SCA) 

SPT

(SWR)

(TAN) 

UWE 

WHA

(WHA) 

WHI 

WLG 

WPH (WPT)

Konawaena-------

Koha1a----------

Ka apuna---------

Kalalua —------

M12 ————— ——— - 

Makaopuhi----—-

Mauna Loa—— — - 

Mauna Loa (2) — - 

Mountain View—- 

Mokuaweoweo-- —- 

Naalehu---------

North Bay— — — - 

National Guard-­ 

North Pit—— —- 

Outlet—- — — — - 

Pahoa —— — — ---

Pahoa x—------

Puu Huluhulu—-- 

Puu Honuaula —-- 

Puu Pili-- ——— - 

Pauahi- ———--- 

Poliokeawe PaliRim-----————— -

Summit Cabin----

South Point—— - 

Southwest Rift-­ 

Tangerine— — —- 

Uwekahuna—----- 

Wahaula-----—--

Waiohinu--------

Whitney—-—----

Waldron Ledge--- 

West Pit—————-

19.5133 155.9183 495 1922 12/60 Basalt; Quaternary or Tertiary.

20.1282 155.7795 1166 5/25/71 Open-- Ash (firm soil); Quaternary or Tertiary.

19.2663 155.8713 524 1/04/72 --do-- Basalt; Quaternary or Tertiary.

19.4092 155.0708 622 12/09/75 --do— Do.

19.3948 155.3075 1116 12/72 6/73 Pahoehoe basalt; Quaternary or Tertiary.

19.3678 155.1642 881 3/64 Open-- Basalt; Quaternary or Tertiary.

19.4967 155.3883 2010 7/58 --do-- Do.

19.4600 155.3450 1475 9/21/66 --do-- Basalt; Quaternary or Tertiary.

19.5042 155.0625 409 3/71 --do-- Do.

19.4880 155.5997 4104 5/22/71 --do-- Pahoehoe basalt; Quaternary or Tertiary.

19.0633 155.5867 205 1958 1/01/69 Volcanic ash; Quaternary or Tertiary.

19.4950 155.5800 4005 3/64 7/05/68 Basalt; Quaternary or Tertiary.

19.7020 155.0287 18 6/14/73 Open— Pahoehoe basalt; Quaternary or Tertiary.

19.4150 155.2833 1115 7/58 --do-- Basalt; Quaternary or Tertiary.

19.3897 155.2823 1038 7/58 --do-- Do.

19.4950 155.9467 205 1958 1/01/69 Do.

19.4850 155.9300 213 4/24/70 4/15/70 Do.

19.3750 155.2083 1021 7/69 11/73 Do.

19.4817 154.8900 215 4/70 Open-- Do.

19.1583 155.4645 35 2/71 --do-- Do.

19.3770 155.2183 994 3/74 --do-- Pahoehoe basalt; Quaternary or Tertiary.

19.2837 155.2245 169 5/23/73 --do-- Do.

19.3983 155.2767 1128 5/73 --do-- Volcanic ash; Quaternary or Tertiary.

19.4700 155.5847 4048 8/74 —do-- Basalt; Quaternary or Tertiary.

18.9818 155.6653 244 3/10/71 --do-- Volcanit ash; Quaternary or Tertiary.

19.4543 155.6050 4046 8/74 --do-- Basalt; Quaternary or Tertiary.

19.4632 154.9752 351 Open-- --do-- Do.

19.4233 155.2933 1240 1930 --do— Do.

19.3317 155.0487 29 3/02/71 --do-- Pahoehoe basalt; Quaternary or Tertiary.

19.0600 155.6100 274 5/01/68 9/01/70 Basalt; Quaternary or Tertiary.

19.4317 155.2617 1210 1961 1961 Do.

19.4248 155.2615 1067 9/71 Open-- Pahoehoe basalt; Quaternary or Tertiary.

19.4117 155.2917 1115 10/31/62 9/24/71 Do.

129
INSTRUMENTATION

HAWAII AND THE PACIFIC—Continued 

Hawaii National Park, HI

Seismometer

Code Type Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

AHA, (ALO), CPH,

DES, (EKO), ESR, 

(GLN), HLP, HPU,

HUH, HVO, KAE,

KEA, KHU, KKU,

KLH, KLK, KNH,

KNW, KOH, KUH,

M12, MVH, MWH,

NAA, NBH, NGH, 

(PAX), PAH, PHH,

PHO, PPL, PWH,

RIM, SPT, (TAN),

WHA, (WHA), WHI,

WLG, WPH:

AIN, CPK, (HSS), 

(KII), MIX, PUH:

(DAN), (LUA), MKA,

Electrotech EV-17 Z 1.0

Mark L-4——————— Z,NS,EW 1.0

15.0 Filmstrip--

-doHIL, HLK:

KML: 

MLH: 

OUT:

UWE:

Electrotech EV-17 

Wood-Anderson----

TJT/n -1

Electrotech EV-17 

Electrotech EV-17

—— do —————————

Electrotech EV-17

HVO-1 —————————

Z 

NS,EW

Z 

Z,NS,EW

Z 

horizontal

Z,EW 

Z 

Z 

Z,NS,EW

1.0 

1.0

1.0 

1.0

1.0 

1.0

1.0 

1.0 

.8 

15.0

15.

2. 

15, 

15.

1. 

15. 

1. 

90.

.0

.0 

.0 

.0

,5 

.0 

.5 

.0

—— do ———— 

—— do ————

—— do ————

—— do ———— 

—— do ————

—— do ————

Photo paper --- --- 

—— do ————

Photo paper --- ---

Timing system: Most stations use a USGS-built solid-state crystal-controlled clock. HIL and KML use a Sprengnether TS-100. 

System response curves: Available from station. 

SHORT HISTORY

In 1912, Omori seismographs were installed in Whitney Vault at the summit of Kilauea Volcano by Thomas A. Jagger, founder 

of the Hawaiian Volcano Observatory. Seismic signals were recorded on rotating drums with smoked paper. Later in 1912, the 

"Hawaiian type" short-period seismograph developed by T. A. Jagger and A. Romberg was installed at Hilo and tested in other 

parts of the island. Various types of low-magnification instruments were operated during the first half of the century.

From about 1955, sensitive electromagnetic seismographs with peak magnifications of 20 to 40 K at about a 0.2-second period 

were used to replace the less sensitive mechanical instruments. By 1958, highly amplified signals from four stations around the 

summit of Kilauea were telemetered to the Observatory. About that time, standard Wood-Anderson seismometers at Haleakala and 

Hilo and a three-component long-period Press-Ewing system at Uwekahuna were put in operation.

From 1966, single-station drum recordings were supplemented with 16-mm filmstrip records. Cable and FM radio carriers 

were used to expand the telemetry network. Currently a 40-station islandwide telemetry system is maintained by the Hawaiian 

Volcano Observatory. Seismic signals are recorded on smoked and photographic paper, 16-mm filmstrip, and 1-in. magnetic tape.

During the long history of the Observatory, several changes have occurred in the instrumentation and location of the 

stations. Many of the details of these changes can be obtained from the Observatory.

HIL was originally located at St. Mary's School in the summer of 1927. In July 1949 the station was moved to its present 

location at the Catholic school on Ululani Street.

MKA was twiceQmoved from its original location of 19.3667° N., 155.1783° W. (elevation 885 m). In October 1965 it was 

located at 19.3633° N., 155.1675° W. (elevation 866 m). In July 1969 it moved to its current location, listed above.

NBH is telemetered to Mauna Loa Observatory for recording. Many periods of interruption in recording occurred owing to 

lightning damage. No records exist from mid-April to mid-June 1968.

PHH was located at 19.3742° N., 155.2110° W. (elevation 988 m) from June 1971 until November 1973 when the station was 

destroyed by lava flow.

OLT and WPH were destroyed by an eruption on September 24, 1971. OLT was later reinstalled.

130
HAWAII AND THE PACIFIC 

Honolulu, HI

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

University of Hawaii

Hawaii Institute of Geophysics 

University of Hawaii 

Honolulu, HI 96822

808-948-7864

Address to obtain records:

As above (on a limited basis). 

SITE INFORMATION

Code

HIG

HNL 

MDY 

(PON) 

WKE

„. . . Latitude Longitude Elev Date Date 

o tat ion name /• j »T \ , * ,, \ , \ , -, * (deg N.) (deg W.) (meters) opened closed

Hawaii Institute —————— 21.2847 157,

of Geophysics. 

Honolulu (Manoa Valley)- 21.3583 157.

Midway Island ———————— 28.2067 177.

Wake Island ————————— 19.3150 166.

.8194.

.8097 

.3333 

.2000 E. 

.6267 E.

18 5/64 Open

243 5/64 1974 

3 1966 1970 

85 4/72 9/73 

5 1956 1969

Foundation; geologic age

Nepheline basalt; Holocene.

Tholeiitic basalt; Pliocene-Pleistocene. 

Coral atoll. 

Basalt. 

Coral atoll.

INSTRUMENTATION

Code

HIG 

HNG

MDY 

(PON)

WKE

Seismometer

Type Component

Benioff —————————— Z,NS,EW

Sprengnether ——————— Z,NS,EW

—— do ———————————— Z,NS,EW

UC 1 f\ 1 *7

To (sec)

23.0

1.0 

15.0

15.0

1.0 

.1

1.0 

15.0

Galvo Type 

T (sec) recording

Pen and ink--

—— do -------

— - Magnetic tape 

Hot stylus- —

—— do —————— 

—— do ——————

—— do -------

Magnification _ . 

. „ Remarks at T 

o

750

Do.

--- Research station.

100 K

10

Timing system: Sprengnether TS-2000 crystal chronometer synchronized with WWVB. 

System response curves: Available from station. 

SHORT HISTORY

The University of Hawaii has operated a number of stations in the Pacific, as evidenced by stations MDY, WKE, and (PON). 

In addition to these stations, it also operates stations on Marcus Island, a Japanese territory, and on Easter Island, run 

in conjunction with the University of Chile.

(PON) was an unusual station in that it was situated on a high volcanic island with numerous basaltic outcrops. The 

magnification of the system was higher than that of any of the coral atolls, and its operation was considered very useful.

WKE was installed by the U.S. Navy, equipped with a Wilson-Lamison and a short-period Benioff, and transferred to 

the University on October 14, 1965.

131
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

Guam Observatory 

Box 8001 M.O.U. #3 

Agana, Guam 96910

Address to obtain records:

National Geophysical and Solar-Terrestrial

Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

HAWAII AND THE PACIFIC 

Agana, Guam

SITE INFORMATION

Code

GUA 

GUMO 

KOR

PJG 

TRU

Station name

Caroline Islands.

Latitude Longitude 

(deg N.) (deg E.)

--- 13.5878 144.8663

7.3350 134.4850

•-- 13.5878 144.8663

7.4458 151.8556

Elev Date Date „ , , . 

, s , , , Foundation; geologic age (meters) opened closed

230 4/63 Open-- Volcanic tuff; Holocene. 

14 8/75 --do-- Limestone. 

30 1/50 12/58

14 5/57 Open-- Limestone. 

107 3/49 --do— Basalt.

INSTRUMENTATION

Code

GUA 

GUMO

KOR 

PJG

TRU

Type

Benioff----- —— -

Seismometer

Component T (sec)

- —— Z,NS,EW 1.0

Wilson-Lamison------- Z .95

UTT

iiO / . \J

• ---- NS,EW 7.0

• —— —— .5

Galvo Type Magnification p~ma rlf«

T (sec) recording at T

0.75 Photo photo —— 6.25 K WWSSN.

--- Helicorder,--- 20 K SRO. Magnification at 

magnetic tape. 25 sec. A recorded at 

6.25 K at 1 sec. 

Digital data of 120-dB 

dynamic range available 

on tape.

1.5 —— do ———————

.5 —— do ———————

7.0 Pen and ink- — 85 Part of the Tsunami 

Warning System.

.2 Helicorder —— 6.25 K 

.2 Film, paper--- --- ---

7.0 —— do ---------

.5 —— do ———————

Timing system: WWSSN standard for GUA. KOR and TRU used a chronometer checked daily with WWV.

System response curves: GUA—see figure 1, p. 363. GUMO--see figure 7, p. 365. Others available from station.

132
SHORT HISTORY

HAWAII AND THE PACIFIC--Continued

Agana, Guam

The earliest station on Guam was sponsored by the Manila Observatory; recording of a two-component Wiechert began in 1914.

GUA was established in 1947 as part of the Guam Microseismic Project, along with NAH, Naha in the Ryukyu Islands, and SBP, 

Subic Bay in the Philippines. It was run by the Fleet Weather Central Research Laboratory and was located approximately 20 km 

west-southwest of its present location. The project ended on the outlying islands by early 1950 and was terminated on Guam in 

1955. The WWSSN station, GUA, was opened in April 1963.

GUMO is an SRO station located on the main Observatory grounds at Potts Junction and has been in operation since August 1975.

PJG was activated in May 1957 as a Geomagnetic Seismological Station for use in the 1GY Pacific Project, along with KOR and 

TRU. In 1965, PJG became an integral part of the Pacific Tsunami Warning System.

133
HAWAII AND THE PACIFIC 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 314-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(EW-IS) 

(HW-IS) 

(JN-IS) 

(OA-IS)

CPO-TCl

Station name

Latitude 

(deg N.)

-- 11.3972

— 19.9803

-- 16.7339

-- 21.4575

EL QQQl

Longitude 

(deg W.)

162.3753 E 

155.7056 

169.5281 

157.9964

Elev 

(meters)

411 

705 

3 

183

n

Date 

opened

6/28/63 

7/24/63 

3/21/62

3/30/64 

9/29/62

/. /n£ /(.i

, , Foundation; geologic age

9/31/62 Unconsolidated sand and coral pebbles. 

10/22/64 Unconsolidated lava and ash. 

9/02/62

9/03/62 Do. 

11/05/62

o/m/Ao n«

(TG-IS) Tonagareva Island————— 9.0600 158.0356 4/30/62 8/04/62 

9/30/62 11/04/62

Do.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

(EW-IS), (HW-IS): Benioff—————— Z,NS,EW 1.0 

Sprengnether——— Z,NS,EW 20.0

(JN-IS), (OA-IS),

(PR-IS), (TG-IS): Benioff- Z,NS,EW 1.0

Magnetic tape, (EW-IS): 15 K

35-mm film. 

——do——————

-doTiming system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

134
IDAHO 

Boise, ID

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Boise State University

Department of Geology 

Boise State University 

Boise, ID 83725

208-385-3629

Address to obtain records:

As above. 

SITE INFORMATION

Code

R<;p

_. . Latitude Station name ... „ .. (deg N.)

Rr,,- co--______----____--.- A-3 f.s.nn

Longitude 

(deg W.)

1 1 f. no i 7

Elev 

(meters)

Date 

opened

";/7";

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

BSE Sprengnether- 1.0 Pen and ink

Timing system: Sprengnether, calibrated with WWV. 

System response curves: Not available.

135
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Ricks College

Department of Geology 

Ricks College 

Rexburg, ID 83440

208-356-2011

Address to obtain records:

As above. 

SITE INFORMATION

IDAHO 

Rexburg, ID

Code Station name

Latitude Longitude Kiev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

REX Rexburg————————————— 43.8125 111.7833 1532 4/20/72 Open-­ Basalt; Pleistocene.

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

Remarks

REX Benioff 1051- 1.0 Helicorder 50-100 K

Timing system: Geotech TG-110. 

System response curve: Not available. 

SHORT HISTORY

The station operated until September 1976 when it was hit by lightning and damaged. It was repaired and again operational 

by May 1977.

136
IDAHO 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(CL-ID) Challis — —— —— —— ——

(HL-ID) Hailey — — — — —— — — 

(HL2ID) --do — — ——— —— — —

Latitude 

(deg N.)

.4911 

.6472 

.5611

.0719 

.2281

Lonj 

(dej

114. 

114. 

114.

116. 

111.

>itude 

- W.)

3417 

,2506 

,4189

,2656 

,7158

Elev 

(meters)

2256 

1890 

1829

792 

1554

Date 

opened

5/23/66 

10/14/61

3/29/64 

10/07/65 

8/09/67 

8/27/68

11/17/66 

11/07/67

Date 

closed

5/24/66 

3/07/64

7/23/65 

11/15/65 

12/10/67 

9/09/68

6/26/67 

12/10/67

Foundation; geologic age

Limestone; Paleozoic. 

Basalt and limestone.

Sand, silt, and gravel.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

(HL-ID), (HL2ID)

(first 3 oper.),

(MO-ID): Benioff- Z,NS,EW 1.0 Magnetic tape, (HL-ID): 340 K 

35-mm film. (HL2ID)

(2d oper.): 400 K

(CL-ID):

(HL2ID) (4th

oper.), (PQ-ID):

Geotech S-13 —— -

Geotech S-13 -——

Z,NS,EW

Z.NS.EW

1.0

1.0

20.0

Magnetic tape- — - Portable system.

—————————— (PQ-ID): 320 K Do.

Timing system: Geotech crystal clock checked with WWV (50 msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

137
IDAHO

Las Vegas, NV

GENERAL INFORMATION

Operated by:

Address:

U.S. Geological Survey for the U.S. Bureau of Reclamation 

and the U.S. Department of Energy

U.S. Geological Survey 

3060 South Highland Drive 

Las Vegas, NV 89109

Telephone: 702-734-3416 

Address to obtain records:

As above.

On a limited basis. 

SITE INFORMATION

Code

BBI 

DC I 

GMI 

HID 

HPI 

LRI 

MB I 

TMI

Station name

Latitude 

(deg N.)

—— 44.1762

—— 43.9548

—— 43.7065

—— 43.9627

—— 43.7864

—— 43.3064

Longitude 

(deg W.)

111.4288 

111.0958 

111.3425 

112.1576 

113.0992 

112.9483 

111.9706 

111.9203

Elev 

(meters)

1950 

2020 

2630 

1504 

2621 

1509 

1707 

2255

Date 

opened

6/74 

6/74 

6/74 

8/73 

10/72 

12/71 

9/73 

10/72

Date 

closed

Open-- 

--do-- 

--do—

--do-- 

--do-- 

See below 

7/74 

Open--

Foundation; geologic age

Hard rock. 

Do. 

Do. 

Do. 

Do. 

Alluvium. 

Hard rock. 

Do.

INSTRUMENTATION

Code

All

Seismometer

Type Component T (sec)

Movlr T _/.r__________-- t in

Galvo

Tg (sec)

Type

recording

Magnification RPm3rk«i

at T 

o

._- nni TVT HMT toiomotered to Ricks College, 

ID. HID, HPI, DCI, TMI 

telemetered to the 

Idaho National Engineering Laboratory.

Time system: Geotech TG-110.

System response curves: See figure 2, p. 363.

SHORT HISTORY

BBI, DCI, and GMI are owned by the U.S. Bureau of Reclamation and run for that agency by the USGS. They constitute the 

Teton network.

HID, HPI, LRIm and TMI are owned by the Idaho National Engineering Laboratory, Health Services Laboratory, U.S. Department 

of Energy (ERDA) Idaho Operations Office, 550 Second Street, Idaho Falls, ID 83401.

LRI is not routinely recorded, although it is used as a backup system whenever another station is down.

MBI was chosen as an alternative site to HID when initial problems were encountered. Subsequently, the instrument problems 

were eliminated and the instruments moved back to HID. Records for HID begin when MBI was closed in July 1974.

138
IDAHO 

Missoula, MT

GENERAL INFORMATION 

Operated by: 

Address:

University of Montana

Earthquake Research Laboratory 

Geology Department 

University of Montana 

Missoula, MT 59812

Telephone: 406-243-6422 or 243-2341 

Address to obtain records:

As above. 

SITE INFORMATION

„ , „. . . Latitude Longitude Elev Date Date Code Station name ,, „,. /•.,,., , ^ -, . n . (deg N.) (deg W.) (meters) opened closed

BHI Bertha Hill ————————— 46.7640 115.7920 

DEI Dent ——————————————— 46.6400 116.1992

ERI Eureka Ridge ————————— 46.5347 116.2748 

GHI Gilbert Hill ————————— 46.4702 116.3190

HHI Harmony Heights —————— 46.4757 116.1465 

LGM Little Green Mountain —— 46.7330 116.0930 

MAS Mason Butte ————————— 46.6327 116.3578

WBI Whiskey Butte ———————— 46.5826 115.9788

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

1652 10/71 1/14/76

960 10/71 7/25/74 

862 10/71 7/26/74 

920 10/71 1/14/76 

636 10/71 7/25/74 

1455 10/71 7/25/74 

1141 10/71 1/14/76

1341 10/71 1/14/76

Galvo Type 

T (sec) recording

0.06 Develocorder

Foundation; geologic age

Belt Supergroup (argillite, quartzite, 

and limestone); Precambrian.

Basalt; Tertiary. 

Do. 

Do. 

Do. 

Do.

Belt Supergroup (argillite, quartzite, 

and limestone); Precambrian.

Do.

Magnification n . 6 T Remarks 

a c. i 

o

100 K Magnification at 10 Hz.

Timing system: Direct recording of WWVB. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

All these stations belong to the Dworshak Dam Array.

139
IDAHO

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2571 

Address to obtain records:

As above. 

SITE INFORMATION

Code

(YPMF) 

(YPTS)

Station name

Latitude 

(deg N.)

—— 44.4623

Longitude 

(deg W.)

111.2882 

111.3525

Elev 

(meters)

1786 

1926

Date 

opened

10/74 

10/74

Date 

closed

10/76 

10/76

Foundation; geologic age

——

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

Timing system: WWVB recorded with custom-chronometer backup. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations have also been recorded on magnetic tape at various times, and these records are also available. Both 

stations are part of the Yellowstone network.

140
IDAHO 

Newport, WA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Department of the Interior

Geological Survey

Newport Geophysical Observatory

Rt. 4, Box 56A

Newport, WA 99156

Telephone: 509-447-3195 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

NTI Geotech 18300--

Latitude Longitude Elev Date Date „ , .. . , . 

,,„ , /•.,,, i i -, j ij Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

—— 48.6300 116.9633 823 8/27/67 12/08/75 Miocene slates with other Tertiary 

strata .

Seismometer Galvo Type Magnification , ^

Component T (sec) T (sec) recording at T

-- —— Z 1.0 0.2 Visible 100 K

Timing system: WWSSN standard.

System response curves: Available from station.

SHORT HISTORY

NTI was established in August 1967 as a telemetry station for the Newport Geophysical Observatory, Wash.

141
IDAHO

Salt Lake City, UT

GENERAL INFORMATION 

Operated by: 

Address:

University of Utah

Department of Geology and Geophysics

College of Mines and Mineral Industries

University of Utah

717 Mineral Science Building

Salt Lake City, UT 84112

Telephone: 801-581-6201 

Address to obtain records:

As above. 

SITE INFORMATION

Code

BEI 

MLI 

NPI 

STI

„. . . Latitude Longitude Station name ,, „ ,. ,, ,. .. (deg N.) (deg W.)

Bear River Range —————— 42.1167 111.7823

Malad Range —————————— 42.0268 112.1256 

North Pocatello Valley-- 42.1473 112.5183

Star Valley —————————— 42.8023 111.0508

Elev Date Date Foundation; geologic age 

(meters) opened closed ' 6 6

1859 10/74 Open-- 

1896 10/74 --do-- 

1640 4/75 --do-- 

2149 12/76 --do--

INSTRUMENTATION

Code

BEI

MLI 

NPI 

STI

Seismometer

Type Component T (sec)

Mark L-4C ————————— Z 1.0

—— do ———————————— Z 1.0

—— do ———————————— z 1-0

—— do ———————————— Z 1.0

Galvo Type Magnification Remarks

T (sec) recording at T

--- Develocorder 200-800 K Telemetered to the 

University.

—— do ————— 200-800 K Do. 

—— do ————— 200-800 K Do. 

—— do ————— 200-800 K Do.

Timing system: WWVB recorded directly at the University. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations are an extension of the University's network in Utah.

142
IDAHO 

Spokane, WA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Bureau of Mines

Spokane Mining Research Center 

East 315 Montgomery Avenue 

Spokane, WA 99207

Telephone: 509-484-1610 ext. 325 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(BUI)

KGI

MUL 

WAL

Kellogg——————

Mullan ——————— •

and limestone); Precambrian.

. ————— 47.4883 116.0817 1400 1970 --do-- Do.

. ————— 47.4617 115.7817 1300 1968 --do-- Do.

. ————— 47.4600 115.9650 1200 1965 --do-- Do.

INSTRUMENTATION

Code

BUI:

VPT .

MUL, WAL:

Type

Sprengnether

—— do ————— -

Sprengnether

Seismometer

Component

S-6000-- Z,NS,EW

S-6000-- Z,NS,EW

To (sec)

0.5

.5 

.5

1.0

Galvo Type 

T (sec) recording

--- Visual

--do-- 

--do--

--do--

Magnif ication 

at T

0

100 K

100 K

100 K

Remarks

Magnification at 1 sec

Magnification reduced

50 K when necessary

to

for mining background. 

Do.

Timing system: Sprengnether TS-200 with a radio tie to WWV. 

System response curves: Available from station. 

SHORT HISTORY

All four stations primarily monitor rock bursts. Rock-burst reports are furnished to the mining companies and are available.

BUI is located in the Star mine at Burke, 700 m below ground surface.

KGI was closed in 1975 for approximately 6 months and its equipment moved to an adjacent mine within the Sunshine mine.

MUL is at the Lucky Friday mine and originally had a Johnson-Matheson S-10 seismometer on loan from the USGS. It was 

converted to the present equipment in 1971.

WAL is at the Galena mine and originally had a Johnson-Matheson S-10 seismometer on loan from the USGS. It was converted 

to the present equipment in 1970.

143
GENERAL INFORMATION 

Operated by: 

Address:

Loyola University

Loyola University 

6525 Sheridan Road 

Chicago, IL 60626

Telephone: 312-274-3000 ext. 255 or 389 

Address to obtain records:

As above. 

SITE INFORMATION

ILLINOIS 

Chicago, IL

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CHI Chicago-Loyola- 41.9000 87.6333 183 9/1912 Open-­ Hard packed sand.

INSTRUMENTATION

Seismometer

Code

CHI

Type

Sprengnether VR-40-0-

Component

Z 

NS.EW 

NS

T o (sec)

1.0 

7.0 

7.0

Galvo 

Tg (sec)

1.0 

7.0 

7.0

Type 

recording

Photo paper 

—— do ————

Magnification Remarks

0

Uncalibrated --- 

—— do —————

—— do —————

Timing system: Sprengnether TS-100 crystal clock. 

System response curve: Not available. 

SHORT HISTORY

An 80-kg Wiechert horizontal seismometer was set up in September 1912. The first quake was recorded on September 29, 1912, 

and reported on the first page of the Chicago Tribune.

144
ILLINOIS 

Chicago, IL

GENERAL INFORMATION

Operated by:

Address:

U.S. Weather Bureau and 

the University of Chicago

University of Chicago 

Chicago, IL 60637

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

CHK Chicago ------------

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date _ , . , 

,, ,, s /-.!,,•» r x j , j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

Seismometer Galvo Type Magnification _ .

Component T (sec) T (sec) recording at T

0 g 0

———— NS.EW 10.0 —— Photo paper 330

Timing system: Seth Thomas clock. 

System response curves: Not available. 

SHORT HISTORY

CHK was established by the U.S. Weather Bureau and the University of Chicago in cooperation with the USC&GS. The original 

equipment consisted of a two-component Milne-Shaw seismometer and was located in the basement of Rosenwald Hall of the University. 

The above-mentioned equipment was installed in 1939.

145
ILLINOIS 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(PW-IL) Pontiac ——— ———— ——

Latitude 

(deg N.)

—— 40.9161 

—— 40.8656

Longitude 

(deg W.)

88.5853 

87.5864

Kiev 

(meters)

210 

198

Date 

opened

6/29/66

8/23/69 

5/07/73

, , Foundation; geologic age

6/30/66

10/10/69 

5/22/73

INSTRUMENTATION

Seismometer

Code

(PW-IL) 

(WQ-IL)

Type

Geotech S-13 —— - 

Geotech S-13 —— -

Component

Z,NS,EW

Z,NS,EW 

Z,NS,EW

To (sec)

1.0

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

—— Magnetic tape --- Portable system. 

—— do —————— —— Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

146
GENERAL INFORMATION

Operated by: Saint Louis University

Address: Department of Earth and Atmospheric Sciences 

Saint Louis University 

P.O. Box 8099, Laclede Station 

Saint Louis, MO 63156

Telephone: 314-535-3300 

Address to obtain records:

As above.

Address requests to: Director of the Geophysical Observatory. 

SITE INFORMATION

ILLINOIS

Saint Louis, MO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

ELC Elco —————————— -

SMV Samsville —————— -

Late Mississippian.

stone); Late Pennsylvanian.

INSTRUMENTATION

Code

ELC

<3MU

Seismometer Galvo Type Magnification

Type Component T (sec) T (sec) recording at T

Mark L-4 —————————— Z 1.0 16 Hz Develocorder , 1262 K 

magnetic tape.

Remarks

Magnification at 10 Hz. 

Telemetered to SLM.

Timing system: ELC timing added at SLM. SMV has a Sprengnether TS-100. 

System response curve: Available from station. 

SHORT HISTORY

ELC is part of the New Madrid Network. Its instrumentation is a modification of USGS microearthquake equipment. 

SMV was installed near the epicenter of an m, 4.7 earthquake. It operated unattended for 1 month at a time from April 1974 

until December 1976. A telemetry station is planned for that site starting in the fall of 1977.

Saint Louis University publishes a quarterly bulletin of the Southeast Missouri Regional Seismic Network.

147
INDIANA 

Blooaington, IN

GENERAL INFORMATION 

Operated by: 

Address:

University of Indiana

Department of Geology 

University of Indiana 

1005 E. 10th Street 

Bloomington, IN 47401

Telephone: 812-337-1008 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude 

(degN.) (degW.)

jy • 1. 1 ly oQ .j £.£.£.

Seismometer

Component T (sec)

- ———— Z,NS,EW 1.0

Elev Date Date Foundation; geologic age 

(meters) opened closed ' 6 B 6

230 12/61 Open-- Salem Limestone; Late Mississippian.

Galvo Type Magnification Remarks

T (sec) recording at T

—— Photo paper 1200 —— 

—— do ———— 60 K

Timing system: Oven-controlled tuning fork and digital clock made in the laboratory. 

System response curves: Not available. 

SHORT HISTORY

BLO was originally run by Saint Louis University under a U.S. Air Force contract. It was taken over by the University of 

Indiana in 1967.

148
GENERAL INFORMATION 

Operated by: 

Address:

Gerald J. Shea

1105 Springhill Road 

Terre Haute, IN 47802

Telephone: 812-232-6311 ext. 2435 

' Address to obtain records: 

1950-1967:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

INDIANA

Terre Haute, IN

1968-present:

Records available only on a limited basis, and 

records are not retained on a routine basis.

As above.

Code Station name

(THI) Terre Haute ———————

TUT A*

Latitude 

(deg N.)

—— 39.3556

—— 39.4069

Longitude 

(deg W.)

O-7 n££~7

o~7 Q£nn

Elev 

(meters)

160

150

Date 

opened

1/01/49

9/21/62

Date 

closed

9/21/62

Foundation;

Do.

geologic age

INSTRUMENTATION

Seismometer

Code

THI

Type

Electronic Research-­

Component

NS 

EW 

Z

To (sec)

7.0 

10.0 

3.0

Galvo 

Tg (sec)

12.0 

10.0 

5.0

Type Magnification 

,. . „ Remarks recording at T

Pen and ink- 

—— do — — ——

Smoked paper

1000 

1000 

1000

Timing system: Electronic home-crafted crystal clock, manually timed with WWV. 

System response curve: Not available. 

SHORT HISTORY

(THI) was started in 1949 to participate in the IGY. The station, moved to THI in 1962, was funded through the USC&GS until 

1967. During that period, the instruments used were a Milne-Shaw modified, t =12 sec, and a Bosch-Omori, t =14 sec. Since 1955 

the station has also maintained two strong-motion instruments, t =1 sec. Experimental research-type instruments have been in use 

since 1967. °

149
IOWA

Des Moines, IA

GENERAL INFORMATION 

Operated by: 

Address:

Mrs. M. M. Seeburger

Mrs. M. M. Seeburger 

1224 44th Street 

Des Moines, IA

Address to obtain records:

Unknown. 

SITE INFORMATION

,, , o* 4. • Latitude Longitude Code Station name ... ..-. f , ,, \ (deg N.) (deg W.)

DMI Des Moines —————————— 41.6000 93.6833

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

DMI Modified Bosch-Omori NS,EW 9.0

Elev Date Date Foundation; geologic age 

(meters) opened closed ' 6 6 6

296 12/20/34 6/37 Kansan till; Pleistocene.

Galvo Type Magnification poma ,v«,

T (sec) recording at T

—— Smoked paper 15 EW component installed 

3/35.

Timing system: Gilbert Regulator clock checked daily with WWV. 

System response curves: Not available. 

SHORT HISTORY

DMI was the avocation of the owner.

150
IOWA 

Dubuque, IA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Loras College

Department of Physics 

Loras College 

Dubuque, IA 52003

319-588-7154

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date ,, , . . , / JM \ /J.TN t ^ \ j T j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed ' ° ° °

-—— 42.5067 90.6833 244 1962 Open-­

Seismometer Galvo Type Magnification - ,

Component T (sec) T (sec) recording at T

———— Z 1.0 —— —— do ————

Timing system: Westrex chronometer. 

System response curves: Not calibrated. 

SHORT HISTORY

DBQ was started as a VELA-Uniform station. It was operated by St. Louis University until 1967.

151
IOWA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(BY- 10) 

(VO-IO)

Station name

Latitude 

(deg N.)

—— 40.7692

Longitude 

(deg W.)

92.4525 

92.1269

Elev 

(meters)

259 

274

Date 

opened

8/26/69 

9/1/64

Date 

closed

10/10/69 

3/22/65

Foundation; geologic age

Limestone.

INSTRUMENTATION

Seismometer

Code

(BY-lb) 

(VO-IO)

Type

Geotech S-13 ——

Sprengnether----

Component

Z,NS,EW 

Z,NS,EW

Z,NS,EW 

Z,NS,EW

To (sec)

1.0 

20.0

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

--- Magnetic tape-

—— do ——————

--- Magnetic tape, 

35-mm film.

—— do ——————

70 K Portable system. 

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

152
GENERAL INFORMATION 

Operated by: 

Address:

KANSAS 

Lawrence, KS

University of Kansas

Seismograph Station 

Department of Geology 

University of Kansas 

Lawrence, KS 66044

Telephone: 913-864-3242 

Address to obtain records:

As above.

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

LAW Lawrence- 38.9594 95.2500 260 1909 Open-- Shale.

INSTRUMENTATION

Code

T AU

Seismometer

Type Component T (sec)

Galvo

- T (sec) 

g

i n

Type

recording

Magnification

at T 

o

On V 1 n V Monnn

10 K

Timing system: Pendulum clock.

System response curve: Not available.

SHORT HISTORY <

LAW was started in 1909 and run by the Physics Department until about 1930 at which time the Department of Geography took 

it over. The station operated intermittently until about 1933 when it was shut down entirely. Records from this early period 

are lost. New equipment was installed in 1952, and records are virtually complete from then to the present.

153
KANSAS 

Manhattan, KS

GENERAL INFORMATION 

Operated by: 

Address:

Kansas State University

Department of Geology 

Thompson Hall 

Kansas State University 

Manhattan, KS 66056

Telephone: 913-532-6724 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

/"MUT\ A^.

INSTRUMENTATION

Code Type

MHK: Sprengnether

MHT, (MHT): Benioff 4681A 

Beniaff 6102A 

Sprengnether

Latitude Longitude 

(degN.) (degW.)

———— 39.1874 96.5792

———— 39.1997 96.5806

———— 39.1866 96.5790

Seismometer

Component T (sec)

S-5007-- Z,NS,EW 20.0

—————— NS,EW 1.0 

S-5007-- Z,NS,EW 15.0

Elev Date Date _ , . . , . 

, , , , , Foundation; geologic age (meters) opened closed

318 11/19/74 Open-- Americus Limestone Member of Foraker 

Limestone; Early Permian.

339 9/61 6/71 Burr Limestone Member of Grenola 

Limestone; Early Permian.

314 11/12/73 11/74

Galvo Type Magnification D ,

T (sec) recording at T

--- Visible---- --- ---

.75 Photo paper 27 K 

.75 —— do ———— 27 K 

90 —— do ———— 1.4 K

Timing system: Times chronometer TS-3.

System response curves: Available from station.

SHORT HISTORY

MHT was constructed and initially funded by Saint Louis University as part of a project under VELA-Uniform. It closed in 

1971 for lack of operating funds.

(MHT) was opened as a temporary station while the construction of the site of MHK was being completed. 

MHK is a successor to MHT; it is a joint project of Kansas State University and St. Louis University.

154
GENERAL INFORMATION 

Operated by: 

Address:

KANSAS 

Garland, TX

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(EM-KA) Emporia- 38.5247 96.4728 2012 9/14/65 9/16/65

INSTRUMENTATION

Code

(EM-KA)

Seismometer Galvo Type Magnification

Type Component T (sec) T (sec) recording at T

Geotech S-13---- Z,NS,EW 1.0 --- Magnetic tape ——

Remarks

Portable system.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

155
GENERAL INFORMATION 

Operated by: 

Address:

University of Kentucky

Department of Geology 

Seismograph Station 

University of Kentucky 

Lexington, KY 40503

Telephone: 606-257-3758 

Address to obtain records:

As above .

SITE INFORMATION

KENTUCKY 

Lexington, KY

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; ' geologic & 6 age &

(LEX) Lexington- 38.0361 84.5050 299 10/01/74 5/76 Lexington Limestone; Middle and Late 

Ordovician.

INSTRUMENTATION

Seismometer

Code

Gfelvo Type Magnification

Type Component T (sec) T (sec) recording at T 

o g

Remarks

(LEX) Sprengnether S-7000-- 1.0 Visible 80 K Magnification at 5 Hz.

Timing system: Sprengnether TS-300 Chronometer, solid state. 

System response curve: Available from station.

156
GENERAL INFORMATION 

Operated by: 

Address:

KENTUCKY 

Garland, TX

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(RS-KY) Russell Springs- 37.1986 84.8683 274 12/03/65 12/12/65

INSTRUMENTATION

Seismometer

Code

(RS-KY)

Type

Geotech S-13 ——

Component

Z,NS,EW 

Z,NS,EW

To (sec)

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape ---

—— do —— —— --

Portable system. 

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

157
KENTUCKY 

Huntington, WV

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Department of the Army

Huntington District, Corps of Engineers 

P.O. Box 2127 

Huntington, WV 25721

304-529-2281

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

(PIV2) —— do ——————————— -

(PIV3) —— do ——————————— -

INSTRUMENTATION

Code Type

S"^ ^ngiuU?e , El6V , °ate, ?at ^ Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

- —— 37.8250 82.9557 —— 5/75 3/76

Seismometer Galvo Type Magnification „ ,

Component T (sec) T (sec) recording at T 

o g o

Huntington office.

Timing system: Geotech TG-100.

System response curves: Not calibrated.

SHORT HISTORY

This network was located in the vicinity of a projected dam and also near a local fault. It was designed to monitor the 

seismicity of the area prior to construction.

158
GENERAL INFORMATION 

Operated by: 

Address:

Saint Louis University

Department of Earth and Atmospheric Sciences

Saint Louis University

P.O. Box 8099, Laclede Station

St. Louis, MO 63156

Telephone: 314-535-3300 

Address to obtain records:

As above. 

SITE INFORMATION

KENTUCKY

Saint Louis, MO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CRU CrutchfieldWilson Creek36.5950 89.0200 127 7/12/74 Open-- Loess (Pleistocene) of the Wilcox Formation (Paleocene and Eocene).

88.8740 137 7/19/74 --do-- Loess (Pleistocene) over siltstone of

the Wilcox Formation (Paleocene and 

Eocene).

INSTRUMENTATION

Code Type

CRU Mark L-4C ----- -

Seismometer Galvo Type Magnif icatioi

Component T (sec) T (sec) recording at T

magnetic tape.

Remarks

Magnification

Telemetered

at 10 Hz.

to SLM

through Sikeston, Mo.

UrVf ..-An---. ------------ 7 in 1A U-, -.-An--~..--- f.Q^ K Manni fir-al-inn ah Ifl Ut

Telemetered to SLM and 

GLD.

Timing system: Timing added at SLM.

System response curves: Available from station.

SHORT HISTORY

Both stations are part of the New Madrid Network, and the equipment is modified USGS microearthquake equipment. 

Saint Louis University publishes a quarterly bulletin of the Southeast Missouri Regional Seismic Network.

159
LOUISIANA

New Orleans, LA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Loyola University

Nicholas D. Burke Seismic Observatory

Loyola University

New Orleans, LA 70118

504-865-3647

Address to obtain records:

As above . 

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

—— 29.9483

Longitude 

(deg W.)

90.1200

Elev 

(meters)

2

Date 

opened

1910

Date 

closed Foundation; geologic

Thick alluvium (60 m and

age

deeper) .

INSTRUMENTATION

Code

NOL

Seismometer

Type Component T (sec)

—— do ———————————— Z 2.0

Galvo 

Tg (sec)

20.0 

2.0

Type Magnification Remarks 

recording at T

Photo paper

—— do —— ——

20 K 

2 K Magnification at 20 sec.

Timing system: Standard Electric Time Clock, Invar Pendulum, checked by WWV signal. 

System response curves: Not available. 

SHORT HISTORY

NOL was started in 1910 with three Wiechert instruments: 80-kg inverted-pendulum N and E components and a horizontalpendulum Z component. In February 1946, these instruments were replaced by the present Sprengnether instruments.

160
GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

LOUISIANA 

Garland, TX

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(JE-LA) Jena—————- 

(LV-LA) Liddieville31.7847 92.015332.1361 91.8750

46 2/06/64 11/23/64 Sandstone.

11/16/66 1/16/67

15 6/28/63 1/30/64 Alluvium.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

(JE-LA), (LV-LA): Benioff—————— Z.NS.EW 1.0 

Sprengnether——— Z,NS,EW 20.0

Magnetic tape, (JE-LA): 30 K 

35-mm film. (LV-LA): 40 K 

——do——————

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

161
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Colby College

Department of Geology 

Colby College 

Waterville, ME 20230

207-873-1131 ext. 241

MAINE 

Waterville, ME

Code

UTD

„. . . Latitude Station name ,, ... (deg N.)

Uol-OVITi 1 1 *>_______-______ /./. f./.O'i

Longitude 

(deg W.)

£n ^cct

Elev 

(meters)

•70

Date 

opened

i n /£.-!

Date 

closed Foundation; geologic age

-

Formation; Early Silurian.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

T (sec) 

8

Type Magnification Remarks 

recording at T

WTR Wilson-Lamison- 1.0 1.5 Photo paper

Timing system: Sprengnether clock. 

System response curve: Not calibrated. 

SHORT HISTORY

WTR originally operated with a Sprengnether torsion seismometer, mainly used for teaching purposes. In 1961 the USC&GS 

provided the Wilson-Lamison currently in use. The station was inoperative early in 1977 while the system was changed to 

include a visual recording system and an electronic Sprengnether clock.

162
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

Unknown. 

SITE INFORMATION

Massachusetts Institute of Technology

Department of Civil and Sanitary Engineering 

Massachusetts Institute of Technology 

Cambridge, MA 02138

617-253-7796

MAINE 

Cambridge, MA

Code Station name

(Camp Technology).

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

33

Date 

opened

7/32

Date 

closed

after 1940

Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

(EMM) Wenner- NS,EW 7.0 Photo paper

Timing system: Seth Thomas checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

The station at East Machias was located on the property of Camp Technology, owned and operated by M.I.T.. The USC&GS 

installed the system and help to advise the operators in the initial phases of operation.

163
MAINE 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(HN-ME) Houlton —————— ——

Latitude 

(deg N.)

—— 46.1619

Longitude 

(deg W.)

69.2214

Elev Date 

(meters) opened

183 11/04/61

10/21/66

9/27/71

5/10/73

2/20/75

12/11/75

Date 

closed

9/06/66 

2/04/71

11/10/71

5/22/73

12/11/75

Open---

Foundation; geologic age

basement.

INSTRUMENTATION

Seismometer

Code

(BG-ME), (HN-ME):

(HN-ME) (last 4 

oper.):

Type

Sp r engne the r - —— 

Geotech S-13----

Component

Z,NS,EW 

Z,NS,EW

Z,NS,EW 

Z,NS,EW

To (sec)

1.0 

20.0

1.0

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

—— Magnetic tape, (BG-ME): 45 K --- 

35-mm film. (HN-ME): 130 K

——— do ———— —————

Magnetic tape - — Portable system.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

164
MAINE 

Weston, MA

GENERA1 INFORMATION 

Operated by: 

Address:

Telephone:

Weston Observatory, Boston College

Weston Observatory 

Concord Road 

Weston, MA 02193

617-899-0950

Address to obtain records:

As above. 

SITE INFORMATION

Code

AGM 

CBM 

(D1A) 

(D2A) 

(D3A) 

EMM

MIN

TRM

Station name

—— do ————————————

—— do ————————————

Milo —————————————

Latitude 

(deg N.)

—— 47.0817

—— 46.9325

—— 47.0586

—— 47.1304

—— 47.0876

—— 44.7392

___ /./. o=;o7

Longitude 

(deg W.)

69.0233 

68.1208 

69.0989 

69.1502 

69.1669 

67.4894

69.0403

~ir\ ORRI

Elev 

(meters)

238 

250 

305 

402 

259 

20

140 

1 1 Q

Date 

opened

11/75 

10/62 

10/76 

10/76 

10/76

7/75 

i em

Date 

closed

Open-- 

--do--

_-do-- 

--do-- 

--do--

--do--

Foundation; geologic age

Indurated till; Pleistocene. 

Vertically bedded schist; Silurian. 

Metasandstone; Devonian. 

Do. 

Do.

Volcanics and minor granitic intrusives 

Silurian.

Silurian metaquartzite and Devonian 

graywacke.

Silurian.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo Type Magnification ,, ,

T (sec) recording at T

Timing system: WWSSN standard added at WES. 

System response curves: Available from station. 

SHORT HISTORY

AGM, (D1A), (D2A), and (D3A) constitute a subnetwork of the New England Seismic Network, run by the Observatory. 

The Observatory contributes to the Northeastern United States Seismic Network bulletin.

Operation of CBM, EMM, and MIM was interrupted between September 1967 and May 1975, although CBM was reactivated for a 7- 

month period in 1968.

165
GENERAL INFORMATION 

Operated by: 

Address:

MARYLAND 

Cheltenham, MD

U.S. Coast and Geodetic Survey

Cheltenham Magnetic Observatory-Closed

Cheltenham, MD

(Obsolete)

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Bouldei, CO 80302

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CLH Cheltenham-————------- 38.7347 76.8458 72 11/1904 12/1928

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

CLH Bosch-OmoriTiming system: Not available.

System response curves: Not available.

SHORT HISTORY

Cheltenham Magnetic Observatory was principally involved in magnetic observations and incidentally ran a seismograph 

station. The instruments were dismantled in 1928 and only operated for a few months in 1929. The observatory closed in 1956 

and the staff moved to Corbin, Va.

166
MARYLAND 

Rockville, MD

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

National Earthquake Information Center

National Earthquake Information Center—Closed 

Washington Science Center 

Rockville, MD 

(Obsolete)

None.

Address to obtain records:

WSC records: All others not available.

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

NHB National Naval Medical--- 

Center.

VIL Villa Mercy —— —— — —— — — 

WSC Washington Science Center

INSTRUMENTATION

Latitude Longitude 

(deg N.) (degW.)

39.0016 77.0837

39.0324 76.9805 

39.0209 77.1887 

39.0505 77.1237

Seismometer

Code Type Component T (sec)

Elev Date Date foundation; geologic age 

(meters) opened closed

91 1962 1972

114 1962 1972 

0 1962 1972 

120 1965 1972 Pelitic schist.

Galvo Type Magnification Remarks

T (sec) recording at T

--- Helicorder —— Telemetered to WSC.

Timing system: Sprengnether clock checked by hand with WWV. 

System response curves: Not available. 

SHORT HISTORY

NBH, NLM, and VIL were owned and operated by the U.S. Bureau of Standards. In 1967, NEIC began telemetering these stations 

and recorded them on Helicorders. The U.S. Bureau of Standards recorded their stations on Develocorder film, but this set of 

records was subsequently discarded.

WSC was started when the Seismology Division of the USC&GS (later, NEIC) first located in the Washington Science Center in 

mid-1965.

167
MASSACHUSETTS 

Cambridge, MA

GENERAL INFORMATION 

Operated by:

Address:

Massachusetts Institute of Technology and 

Harvard University

Department of Earth and Planetary Sciences 

Building 54, Room 527 

Massachusetts Institute of Technology 

Cambridge, MA 02138

Telephone: 617-253-7796 

Address to obtain records:

As above. 

SITE INFORMATION

Code

CAM 

(DUX) 

GLO 

HRV 

WFM

Station name

Latitude 

(deg N.)

-- 42.3833

— 42.0686

-- 42.6403

— 42.5064

— 42.6106

Longitude 

(deg W.)

71.1167 

70.7678 

70.7272 

71.5583 

71.4906

Elev 

(meters)

5 

27 

15 

180 

88

Date 

opened

1908 

10/76 

8/75 

1933 

5/76

Date 

closed

1930's 

Open— 

— do— 

— do— 

—doFoundation; geologic age

Gneiss; 

Granite 

Gneiss; 

Granite

Devonian. 

; Devonian. 

Devonian. 

; Devonian.

INSTRUMENTATION

Code

CAM

(DUX)

PT n

Type

Mark L-4C —————

—— do ————————

Geotech 7505A ——

Seismometer

Component To (sec)

1.0

1.0

1.0

23.0

1.0

Galvo Type Magnification pQm,^i,o

T (sec) recording at T

—— do —————

—— do —————

—— do —————

Timing system: Sprengnether TS-250 digital timing system; Kinemetrics model WVTR mark IV with time-code stripper. 

System response curves: Not available. 

SHORT HISTORY

CAM was owned and operated by Harvard University. It was located in the Geology Museum, Oxford Street, Cambridge. When the

Observatory was moved from Cambridge to Harvard, Mass., HRV was established. It is still owned by Harvard University but is

operated by M.I.T. under an arrangement made in 1970.

DUX and GLO are temporary stations established for use in the Northeast Seismic Network. \

WFM (Wallace Observatory), located in Westford, Mass., is owned and operated by M.I.T. Underground vault construction was

completed in April 1975, and the station opened May 20, 1975. Data are telemetered to M.I.T. and recorded at the Seismology

Lab in Cambridge. WFM is also equipped with an earth-tide gravimeter and NS, EW tiltmeters.

168
MASSACHUSETTS 

Weston, MA

GENERAL INFORMATION 

Operated by: 

Address:

Weston Observatory, Boston College

Weston Observatory 

Concord Road 

Weston, MA 02193

Telephone: 617-899-0950 

Address to obtain records:

As above. 

SITE INFORMATION

Code

FLR 

QUA 

WES

Station name

Latitude 

(deg N.)

—— 41.7167

—— 42.4566

—— 42.3847

Longitude 

(deg W.)

71.1215 

71.3738 

71.3221

Elev 

(meters)

52 

201 

60

Date 

opened

3/24/75 

5/07/77 

12/1930

Date 

closed

Open-- 

— do-- 

— do--

Foundation; geologic age

Glacial deposits; Pleistocene. 

Fine-grained schist; Ordovician. 

Metavolcanics ; Precambrian.

INSTRUMENTATION

Seismometer

Code

FLR

QUA 

WES

Type

Hall-Sears 10 — ——

--do —— — ———— —

Component T 

o

1 

1

1 

1 

15

(sec)

.0 

.0

.0 

.0 

.0

Galvo 

Tg (sec)

.75 

.75 

100.0

Type Magnification 

recording at T

Develocorder 

—— do ——— —

Photo paper-

—— do ————— 

—— do — —— —

50 

150

50 

50 

3

K 

K

K 

K 

K

Remarks

Telemetered to WES. 

Do.

WWSSN. 

Do. 

Do.

Timing system: WWSSN standard added at WES.

System response curves: WES—see figure 1, p. 363. Others available from station.

SHORT HISTORY

Weston College Seismic Station began operating in 1930 with a Bosch-Omori recorded on smoked paper. The instrumentation 

was changed to a Weichert and then, in 1936, to a three-component Benioff system. In 1949 the station was moved 300 m to the 

newly established Weston Observatory site. The WWSSN equipment was installed in December 1961, and several months later the 

New England Seismic Network was initiated. The Observatory now runs stations in Connecticut, Maine, Massachusetts, and New 

Hampshire. Part of this work is supported by USGS grants.

The Observatory contributes to the Northeastern United States Seismic Network bulletin.

169
MICHIGAN

Ann Arbor, MI

GENERAL INFORMATION 

Operated by: 

Address:

University of Michigan

Seismological Observatory 

Department of Geology and Mineralogy 

University of Michigan 

Ann Arbor, MI 48104

Telephone: 313-763-4069 

Address to obtain records:

As above. 

SITE INFORMATION

Code

AAM 

SUG 

WPM

Station name

Latitude Lonj 

(deg N.) (dej

——— 42.2997 83

—— - 46.5214 84.

- —— 46.7515 89

jitude

I W.)

.6561 

.1383 

.5549

Elev Date Date 

(meters) opened closed

249 1940 Open-- 

190 9/26/69 5/30/70 

193 1973 Open-­

Foundation; geologic age

Gravel . 

Jacobsville Sandstone; Precambrian. 

Copper Harbor Conglomerate; Precambrian

INSTRUMENTATION

Code

AAM

SUG 

WPM

Type

Benioff 1051--'

Benioff 1101--

Geotech 7505A,

Seismometer

Component

- ———— Z

- ———— Z

- ———— Z

8700C- Z,NS,EW

To (sec)

1.0 

1.0 

15.0

30.0 

30.0

1.0 

30.0

Gal vo Type

T (sec) recording

0.75 Photo paper 

.75 —— do ———— 

100.0 ---do ————

100.0 Strip chart 

100.0 —— do ——— -

--- Helicorder, 

magnetic tap

Magnification _ , 6 _ Remarks at T 

o

12.5 K, 6.25 K WWSSN. 

12.5 K, 6.25 K Do. 

1.5 K Do.

55 K HGLP. 

55 K Do.

15 K 

Z: 17.5 K HGLP. 

e. NS: 16.5 K 

EW: 16.5 K

--

Timing system: AAM uses WWSSN standard. SUG used a Sprengnether TG-110 quartz-crystal chronometer. WPM uses a Geotech TG120. 

System response curves: AAM—see figure 3, p. 364. WPM—see figure 6, p. 365. 

SHORT HISTORY

The Seismological Observatory at Ann Arbor was established in 1909 and used a Bosch-Omori and a Weichert. It was located 

at a slightly different location than the present one. AAM was established in 1940 under the direction of Dr. James T. Wilson. 

WWSSN equipment began operating at this station on October 22, 1962.

SUG began operation as the first surface-installation HGLP prototype station, funded by ARPA. The station was dismantled 

following two severe floods.

WPM was established in the White Pine Copper Company mine (89 m deep) during 1973 and 1974 with funds provided by ARPA. 

First installed as an experimental station, it was raised to the status of the eleventh HGLP observatory in 1974.

170
MICHIGAN 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(ED-MI)

(PF-MI) ————— 46,

84.

84..4608

213

259

12/02/65

1/03/63

12/13/65

6/17/63

INSTRUMENTATION

Seismometer

Code

(ED-MI):

Type

Geotech S-13 ——

Component

Z,NS,EW

7 WC FU

To (sec)

1.0 

or\ r\

Galvo Type Magnification 

T (sec) recording at T

--- Magnetic tape ---

___ ___,4n--___---- ___

Remarks

Portable system.

Tlr,

Benioff- Z,NS,EW 1.0 Magnetic tape, 80 K 

35-mm film.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

171
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

University of Minnesota

Department of Geology and Geophysics 

University of Minnesota 

Minneapolis, MN 55455

612-373-3137

Address to obtain records:

As above.

SITE INFORMATION

MINNESOTA 

Minneapolis, MN

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

(CM1) Central Minn. 1—————— 45.9339 93.3546

(CM2) Central Minn. 2—————— 45.9791 93.1696

(CMS) Central Minn. 3—————— 43.8801 93.0162

(CM4) Central Minn. 4—————— 45-7500 93.1033

(CMS) Central Minn. 5—————— 45.7939 93.3279

(CM6) Central Minn. 6—————— 45.8665 93.2073

DUL Duluth————————————— 46.8200 92.0833

MFM Ford Plant, St. Paul—— 44.9141 93.1936

MNM Minneapolis---------—— 44.9740 93.2381

MNN Minneapolis------———— 44.9144 93.1900

INSTRUMENTATION

_____________Seismometer_________________

Code Type Component T (sec)

(CM1-6) Geotech S-13—————— Z 1.0

DUL Wilson-Lamison————— Z 1.1

Modified Sprengnether NS.EW 6.0

MFM Geotech S-13--- ——— - Z 1.0

MNM ——do———————————— Z 1.0

MNN Benioff 1051, 1101—— Z,NS,EW 1.0

Sprengnether—————— Z,NS,EW 15.0

324

323

294

298

298

310

340

226

204

217

1/01/77 Open--

1/01/77

1/01/77

1/01/77

1/01/77

1/01/77

1952

6/76

12/74

1964

-do—

--do--

--do--

--do--

--do--

1961

Open--

1976

1967

Hinckley and Fond du Lac Formations; 

Precambrian.

Do.

Do.

Do.

Do.

Do.

Duluth Complex; Precambrian. 

St. Peter Sandstone; Middle Ordovician.

Do.

Do.

Galvo Type Magnification 

T (sec) recording at T

Remarks

0.58 

6.5

0.75

100.0

Magnetic tape

Pen and ink

——do————

—— do————

Magnetic tape

Photo paper

——do————

Telemetered to MNM.

5 K

WWSSN. 

Do.

Timing system: WWVB directly recorded on tape. MNN uses Accutron one-minute marks with WWVB superimposed once a day. 

System response curves: Available from station.

172
MINNESOTA—Continued 

Minneapolis, MN 

SHORT HISTORY

(CM1-6) is an array funded by the U.S. Department of Energy in the vicinity of the Lake Superior Geologic Province. It is 

of interest because of its proximity to the mid-continent gravity high and to a major fault, and because it is within 150 km of 

the epicenter of the 1975 earthquake.

DUL was run by the University of Minnesota, Duluth. It operated intermittently before 1954 and then operated continuously 

between 1955 and 1956 using one short-period vertical Benioff. In 1956 the USC&GS installed two short-period horizontals. Some 

records were sent to the USC&GS and a few were saved for display. The rest were discarded.

MNM is located on the campus of the University.

MM was started in 1964 as a WWSSN station and ran until 1967. It was abandoned because of flooding problems.

173
MINNESOTA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

214-271-2561 

73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(GP-MN) 

(GY-MN) 

(HT-MN) 

(JO-MN) 

(SE-MN) 

(WF-MN)

Station name

Latitude 

(deg N.)

—— 47.6644

—— 44.5047

—— 44.8528 

—— 44.7069

—— 44.4142

—— 43.8014

Longitude 

(deg W.)

93.4894 

94.0547 

92.8778 

93.5083 

94.6653 

92.3731

Elev 

(meters)

427 

305 

274 

290 

244 

381

Date 

opened

9/02/64 

7/05/62 

8/02/62 

7/13/62 

1/24/62 

8/30/64

Date 

closed

12/01/64 

7/11/62 

10/05/62 

7/30/62 

6/19/63 

11/24/64

Foundation; geologic age

Glacial drift.

Granitic basement; Precambrian. 

Dolomitic limestone.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(GP-MN), (WF-MN): Benioff —————— Z,NS,EW 1.0 

Sp rengnether ——— Z , NS , EW 20.0 

(GY-MN), (HT-MN),

(JO-MN), (SE-MN): Benioff —————— Z,NS,EW 1.0

Galvo Type Magnification R^mar-ir* 

m f \ j • ^ fti KemarKS T (sec) recording at T

--- Magnetic tape, 

35-mm film.

—— do ——————

—— do ——————

(GP-MN) : 

(WF-MN) :

(GY-MN) : 

(HT-MN) : 

(JO-MN) : 

(SE-MN) :

140 K 

120 K

50 K 

50 K 

40 K 

225 K

Timing system: Geotech crystal clock checked with WWV (50 msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing th 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

174
MISSISSIPPI 

University, MS

GENERAL INFORMATION 

Operated by: 

Address:

University of Mississippi

Seismological Observatory--Closed 

University of Mississippi 

University, MS 38677

Address to obtain records:

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

OXF Oxford — — —— — ————

(OXR) --do —— —— —— — — — ——

Latitude 

(deg N.)

—— 34.5118

—— 34.3000

Longitude 

(deg W.)

89.4092 

89.6000

Elev 

(meters)

101 

157

Date 

opened

8/63 

8/67

Date 

closed

5/76 

5/76

Foundation; geologic

Clay; Tertiary. 

Do.

age

INSTRUMENTATION

Seismometer

Code

OXF

Type

Benioff 1051, 1101 - —

Component

Z,NS,EW

7 XTC 1TI.J

To (sec)

1.0

i C r\

Galvo 

Tg (sec)

0.75

i r\r\ r\

Type Magnification 

recording at T

Pho'to paper 50 K

•3 V

Remarks

WWSSN.

Tl~

(OXR) Sprengnether- 30.0 1.5 Pen and ink 1 K Located on campus; run 

infrequently.

Timing system: WWSSN standard.

Response curves: OXF--see figure 1, p. 363.

« 

SHORT HISTORY

OXF was established as a WWSSN station in 1963 and operated as the only permanent station in Mississippi until funding 

was stopped in 1976. Original records are archived at St. Louis University.

175
GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

MISSISSIPPI 

Garland, TX

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(GS-MS) Greenville ——————————— 33.3292 91.0353

(LD-MS) Lucedale ———————————— 30.9500 88.8833

(LD2MS) --do ——————————————— 30.8528 88.5406

(LD3MS) --do ——————————————— 30.6661 89.0436

(LL-MS) -Laurel ————————————— 31.7214 89.3558

(LU-MS) Lumberton ——————————— 31.0389 89.2389

(MB-MS) McComb ————————————— 31.3428 90.2864

(PC-MS) Picayune ———————————— 30.5558 89.7825

•

(PU-MS) Purvis ————————————— 31.1519 89.5489

(RI-MS) Richton ————————————— 31.1978 88.8508

30

70

79

46

91

91

122

12

91

37

8/22/69 10/10/69

11/13/66

1/19/69

4/11/70

1/18/69 

4/14/70

1/18/69 

4/09/70

11/14/66

1/19/69

4/09/70

1/16/69 

4/07/70

11/15/66

1/15/69

4/09/70

11/12/66

1/15/69

4/10/70

12/03/66

2/02/69

4/22/70

2/02/69 

4/22/70

2/02/69 

4/22/70

12/03/66

2/02/69

4/22/70

2/02/69 

4/22/70

12/06/66

2/02/69

4/22/70

12/06/66

2/02/69

4/22/70

2/26/65 4/03/65

Sand, clay, and gravel.

1/14/69 

4/16/70

2/02/69 

4/22/70

176
MlSSISSIPPI'-Continued 

Garland, TX

INSTRUMENTATION

Code

(GH-MS) ,

(LD2MS),

(LL-MS),

(MB-MS) ,

(PU-MS) ,

(LD-MS),

(LD3MS),

(LU-MS),

(PC-MS),

(RI-MS):

Seismometer

Type Component T (sec)

Geotech S-13 ——— Z,NS,EW 1.0

Geotech ——————— Z,NS,EW 20.0

Galvo Type Magnification

T (sec) recording at T 8 o

Magnetic tape (MB-MS): 40 K

—— do ——————

Portable system.

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p.-364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

177
MISSOURI 

Rolla, MO

GENERAL INFORMATION 

Operated by: 

Address:

University of Missouri

Department of Geology and Geophysics 

University of Missouri 

Rolla, MO 65401

Telephone: 314-341-4364 

Address to obtain records:

As above. 

SITE INFORMATION

Code

nnT

„. . . Latitude Station name , , „ , (deg N.)

Ry-,1 1 o__________-_-____-_ T7 Q178

Longitude 

(deg W.)

01 e^on

Elev 

(meters)

onn

Date 

opened

1QAR

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

ROL BenioffSprengnetherZ,NS,EW 1.0

Z,NS,EW 15.0

0.75 Photo paper

90.0

50 K

1500

Recorded at the main 

campus and telemetered 

to SLM. 

Do.

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

ROL is owned and operated by the University of Missouri, Rolla, and receives considerable support from St. Louis 

University, which records this station, along with its own network, in St. Louis.

178
GENERAL INFORMATION

MISSOURI 

St. Louis, MO

Operated by: Saint Louis University

Address: Department of Earth and Atmospheric Sciences 

Saint Louis University 

P.O. Box 8099, Laclede Station 

St. Louis, MO 63156

Telephone: 314-535-3300 

Address to obtain records: 

As above. 

SITE INFORMATION

Code

BRM 

BRR 

CGM 

DON

DWM 

BCD

FLO 

FRM

FVM 

GRV 

LST 

MLD 

(MMM) 

NMM 

PTG 

RMB

SLM

TVc

Station name

Flat River —— —— —— —

Maiden ————————— —

Tlicnr, W-} 1 1 a, T_ --------

Latitude 

(deg N.)

Q r r -50 O

—— 37.3167

—— 37.1760

o£ o t\ t; t\

—— 36.0600

—— 37.9840

—— 36.5587

—— 36.5910

—— 36.4277

O£ O Q£ f\

O Q £O£ 1

_-_ ->a RI Rn

Longitude 

(deg W.)

90.0597 

91.1750 

89.5333 

89.9330

89.4900 

89.9400 

90.3700 

90.4864

90.4260 

90.3950 

89.7310 

89.9698 

91.0400 

89.5282 

89.7037 

90.2780

90.2361 

on c.£an

Elev 

(meters)

109 

250 

134 

165

92 

79 

160 

161

310 

168 

83 

80 

-244 

92 

85 

147

161

1 OR

Date 

opened

1969 

1960 

1938 

7/10/74

11/20/74 

9/25/75 

1928 

1969

9/01/72 

1964 

7/18/74 

11/67 

12/75 

11/67 

11/67 

6/27/74

10/09/09

O / 1 O / 1 1.

Date 

closed

1973 

1962 

Open-- 

--do--

--do-- 

--do-- 

8/31/71 

12/72

Open-- 

1974 

Open-- 

11/69 

Open-- 

11/69 

11/69 

Open--

--do-- 

_ ,)„__

Foundation; geologic age

Clay over gravel; Eocene. 

Gasconade Dolomite; Ordovician. 

Fernvale Limestone; Late Ordovician.

Smithville Formation (cherty dolomite); 

Early Ordovician.

Gumbo, sandy clay alluvium; Pleistocene. 

Sandy clay alluvium; Quaternary. 

Shale; Pennsylvanian.

Bonneterre Dolomite (Cambrian) overlying 

porphyry (Precambrian) .

Bonneterre Dolomite; Late Cambrian. 

Roubidoux Dolomite; Early Ordovician. 

Gumbo sandy clay; Quaternary. 

Sandy clay; Quaternary. 

Granite porphyry; Precambrian. 

Sandy clay; Quaternary. 

Sandy clay; Quaternary.

Roubidoux Dolomite (chert); Early 

Ordovician.

St. Louis Limestone; Late Mississippian.

179
MISSOURI--Continued 

St. Louis, MO

INSTRUMENTATION

Seismometer

Code

BRM

BRR

CGM 

DON

DWM 

ECD 

FLO

FRM 

FVM

GRV 

LST 

MLD 

(MMM)

NMM

PTG 

RMB

SLM

TVS

Type

—— do —————————— • 

—— do —————————— •

Benioff 4861 ———— - 

Benioff 6102 ———— -

Mark L-4C —————— -

Hall-Sears 10 ——— -

Hall-Sears 10 ——— -

Morlr T _Ar_-------_-

Component T (sec)

NS.EW 1.0

Z 1.0

Z 1.0

Z 1.0

--- Z,NS,EW 1.0

, Wo , C.W 1 D . U

NS,EW 1.0

£- * J

. £.£.

NS.EW 1.0

.__ 7 1 t\

Galvo Type Magnification 

T (sec) recording at T

0.5 Photo paper

1.0 —— do ————

.75 —— do ————

16 Hz Develocorder

16 Hz —— do ————— 

16 Hz —— do —————

12.0 Photo paper 

.75 —— do ————

100.0 —— do ————

None Visible, ---- 

magnetic tape.

.75 Photo paper, 

magnetic tape.

.75 —— do ————— 

100.0 —— do —————

.5 Photo paper 

16 Hz Develocorder 

Magnetic tape 

Visible ———

--- Magnetic tape

—— do ——————

16 Hz Develocorder

.75 Photo paper 

.75 —— do ———— 

90.0 —— do ————

30 K

100 K 

15 K 

1200 K

95 K 

206 K

1 K 

50 K 

1500

1500

100 K

100 K 

1500

100 K 

167 K 

50 K 

50 K

50 K

50 K 

1390 K

25 K 

7.5 K 

750

T)f\ V

Remarks

Magnification at 0.3 sec 

Recorded on autocorder

Magnification at 10 Hz. 

Telemetered to SLM.

Do. 

Do.

Original instrumentation 

WWSSN. 

Do.

Strainmeters also recorded. Telemetered to 

SLM. Magnification 25 

K at 1 sec.

WWSSN. Filtered and recorded visibly and on 

magnetic tape. Telemetered to GLD. 

WWSSN. 

WWSSN. Z filtered and 

recorded visibly; 

telemetered to GLD.

Magnification at 0.3 sec 

Autocorder.

Magnification at 10 Hz. 

Telemetered to SLM.

Magnification at 10 Hz. 

Telemetered to PTG.

Magnification at 10 Hz. 

Located in a deep iron 

mine.

Magnification at 10 Hz. 

Telemetered to PTG.

Magnification at 10 Hz.

Magnification at 10 Hz. 

Telemetered to SLM.

Z also recorded with 

pen and ink and 

displayed in the lobby

Sprengnether S-7000 or 

Geospace HS-10-1---

magnetic tape. Telemetered to SLM.

i.O

180
MISSOURI--Continued 

St. Louis, MO 

Timing system: WWSSN standard TS-100, Astrodata TCG.

System response curves: FLO—see figure 1, p. 363. FVM--see figure 1, p. 363, and figure 6, p. 365. Others 

available from station.

SHORT HISTORY

BRM had many instrument problems and, consequently, only intermittent records exist.

BRR was used as an experimental station for testing different kinds of instruments.

CGM was founded in cooperation with Southeast Missouri State Teachers College in 1938. For some periods of a year or more, 

the station has not been in operation.

DON, DWM, LST, and RMB are stations in the SIR array. Their instrumentation is modified USGS microearthquake equipment.

EDD is a station in the PGA array. It uses modified USGS microearthquake equipment.

FLO began operation in 1928 with a Wood-Anderson NS and EW system and a Galitzin-Wilip three-component system. The WWSSN 

equipment was installed on December 1, 1961 and operated until August 1971 when the equipment was moved to FVM.

FRM was closed in 1972 because of the closing of the lead mine in which it was located.

FVM is a remote site buried in a vault near the Missouri Conservation Department firetower site. A temporary system (Mark 

L-4C, helicorder) operated intermittently for 2 years before the WWSSN equipment was installed on October 5, 1974. The portable 

Benioff's were used instead of the larger units because of the difficult access to the vault.

GRV was a temporary station, operating intermittently from its start in 1964 until 1969. It ran continuously from 1969 to 

1974, with one intermittent period from 1972 to 1973.

LST is located in a region of sand blows from the 1811-12 earthquakes.

MLD, NMM, and PTG were part of an early tripartite network, later moved to Tennessee.

SLM was founded in 1909 and has been in continuous operation since that time, having been relocated once in 1926 less than 

1 km from its original site. Unfortunately, some of the older Wiechert records have been lost, over the years, and so continuous 

records do not exist before about 1927. Between 1925 and 1960, the station operated as Central Station of the Jesuit Seismological Association. Presently, it serves as headquarters for the Saint Louis University network of some 25 stations in au 

area of 80,000 km2 .

TYS is located 30 km southwest of St. Louis at the Washington University biological preserve. It is used for testing 

other seismograph systems, and the instruments at TYS are used to test other locations.

Sixteen of the stations in the University's multi-state network are supported by USGS grants.

The University publishes a quarterly bulletin of the Southeast Missouri Regional Seismic Network.

181
MISSOURI 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(EN-MO) Ellsinore —— —— — — —

(KC-MO) Kansas City - — --- — —

Latitude 

(deg N.)

—— 39.3558

Longitude 

(deg W.)

90.5956 

94.6714

Elev 

(meters)

152 

274

Date 

opened

9/15/65 

10/25/65

10/17/65

, , Foundation; geologic age

9/16/65 

2/25/66

1/16/67 Limestone and shale.

INSTRUMENTATION

Code

(EN-MO) (2d ope] 

(KC-MO):

(EN-MO)

(1st oper . ) :

Seismometer Galvo Type Magnification

Type Component T (sec) T (sec) recording at T

r.)

Benioff ——————— Z,NS,EW 1.0 —— Magnetic tape, (KC-MO): 50 1

35-mm film.

Sprengnether---- Z.NS.EW 20.0 --- ---do-- —— -- ——

Geotech S-13---- Z,NS,EW 1.0 --- Magnetic tape ——

Remarks

<

---

Portable system.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

182
GENERAL INFORMATION

Operated by: Ford Aerospace and Communications

Address: 214 North 30th Street 

Billings, MT 59101

Telephone: 406-245-6332 

Address to obtain records:

VELA Seismological Center 

312 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

LAO 

LB1 

LB2 

LB3 

LB4 

LC1 

LC2 

LC3 

LC4 

LD1 

LD2 

LD3 

LD4 

(LEI) 

(LE2) 

(LE3) 

(LE4) 

(LF1) 

(LF2) 

(LF3) 

ri.ir/il

Station name

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA 

LASA

T A"?A

Al

B 

B 

B 

B

C 

C 

C 

C 

D 

D 

D 

D 

E 

E 

E 

E 

F 

F 

F

TT

Ring —— — —— —

Ring —— —— —— -

Ring --------

Ring —— — —— --

Ring —— — — ——

Ring —— —— —— -

Ring —— ——— —

Ring -------

Ring —— —— — --

Ring —— —— ——

Ring — ——— ——

Ring —— — ———

Ring -- ——— ——

Ring — ——— ——

Ring — —— ———

Latitude 

(deg N.)

—— 46

—— 46,

—— 46.

—— 46,

— 46.

— 46,

— 46,

— 46.

— 46,

— 46.

— 46.

—— 47,

—— 45.

—— 45.

.6886 

.7522 

.6350 

.6592 

.7681 

.8394 

.6694 

.5742 

.7353 

.8397 

.5031 

.5497 

.9419 

.1628 

.5128 

.1494 

.7608 

.3708 

.9097 

.9728 

/.iii

Longitude 

(deg W.)

106. 

106. 

106. 

106. 

106. 

106. 

106. 

106. 

106. 

105. 

106. 

106. 

106. 

106. 

105. 

106. 

106. 

105. 

105. 

107.

inf.

2222 

0917 

1628 

3169 

2431 

1275 

0125 

2497 

3739 

8894 

0108 

4803 

3833 

0561 

3647 

3342 

9167 

1875 

4856 

0817 

o/. •*(.

MONTANA 

Billings, MT

Corporation

Elev 

(meters)

744 

754 

694 

723 

717 

719 

779 

682 

764 

759 

661 

800 

713 

685 

610 

761 

803 

740 

754 

837

•70-7

Date 

opened

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66 

1/66

1 /££

Date 

closed

Open-- 

— do— 

— do— 

— do— 

— do— 

— do —

— do— 

— do—

— do—

— do— 

--do— 

— do— 

— do— 

1/74 

1/74 

1/74 

1/74 

1/74 

1/74 

1/74 

i i-ii.

Foundation; geologic age

Fort Union Formation; Paleocene. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

r>~

183
INSTRUMENTATION

MONTANA—Continued 

Billings, MT

Code

Seismometer

Type Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

LAO, LC1-4,

LD1-4, LF1-4,

LF1-4: Hall-Sears 10-1AGeotech 7505ALB1-4 Hall-Sears 10-1AZ,NS,EW

1.0

20.0

1.0

Develocorder, 

digital.

Digital———- 

Digital———-

Each station has 15 additional stations in 

an array within 3.5 km 

of the central station. 

Their instrumentation 

is the same as that of 

the LB stations. LC1 

has only 14 additional 

stations. 

Do.

Do.

Timing system: A WWV synchronized time-of-day Hyperion Industries, Model HI-140, time-code generator and Motorola SLN-6039D 

Master Oscillator.

System response curves: See figure 8, p. 365. 

SHORT HISTORY

LASA was established to explore the possibility of using large arrays for seismic discrimination, specifically 

discriminating between earthquakes and blasts. Experimental work on the dynamics of large arrays continues. The Corporation 

puts out daily teleseismic event reports, weekly near-regional reports, and biweekly strip-mine blast reports.

The central site, LAO, is sometimes coded LA0.

184
MONTANA 

Bozeman, MT

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Montana State University

Earth Sciences Department 

Montana State University 

Bozeman, MT

406-994-0211

Address to obtain records:

WWSSN records:

National Geophysical and SolarTerrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

BZE records:

Sporadic records from operation during winter months. 

Contact the Earth Sciences Department.

SITE INFORMATION

Code

~Df\7

BZM

Station name

Latitude 

(deg N.)

—— 45.6000

—— 45.8060

—— 45.6669

Longitude 

(deg W.)

110.9327

111.0453

Elev 

(meters)

1575

1490

Date 

opened

O /£ O

1974

Date Foundation; geologic age closed

5/77

INSTRUMENTATION

Seismometer

Code

BOZ

BZE 

BZM

Type

Benioff 1051, 1101 ——

J302 —— — —— —— —— ——

Component

Z.NS.EW 

Z,NS,EW

Z

Z 

NS,EW

T (sec)

1.0 

15.0

.25

1.5 

11.0

Galvo Type Magnification 

T (sec) recording at T

0.75 Photo Paper 60 K 

100.0 —— do —— ——

1.5 Photo paper 12 K

8 —— do ———— 8 K

Remarks

WWSSN. 

Do.

Recorded sporadically. 

Magnification at 8 sec.

Timing system: BZM used a Seth-Thomas pendulum clock. BOZ employed the standard WWSSN clock. 

System response curves: BOZ—see figure 1, p. 363. Others available from station. 

SHORT HISTORY

BOZ was established as a WWSSN station and operated efficiently until it encountered funding problems. It ceased operating 

at the end of 1966; its equipment was finally removed in 1968 and sent to Missoula, Mont., a currently operating WWSSN station. 

BZE was established in the mountains near the University to monitor avalanche activity. 

BZM was located on the campus of the University and its operation contracted to the Physics Department by the USC&GS.

185
MONTANA 

Butte, MT

GENERAL INFORMATION

Operated by:

Address:

Montana College of Mineral Science and Technology 

for the U.S. Geological Survey

Montana College of Mineral Science and Technology 

West Park Street 

Butte, MT 59701

Telephone: 406-792-8321 

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

SITE INFORMATION

Code „ . . Station name

Latitude 

... „ , (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

BUT Butte- 112. 1758 10/36 Open-- Rhyolite; Tertiary.

INSTRUMENTATION

Seismometer

Code

BUT

Type

Benioff MC ————————

Wood-Anderson (Henson)

Component

Z 

NS 

NS.EW

T (sec)

1.3 

8.0 

8.0

Galvo 

T (sec)

1.0 

3.8

Type Magnification Remarks 

recording at T

Photo paper 

—— do ———— 

—— do — — —

50 K 

316 

12 K

Timing system: Simplex Time Recorder type 93-2. 

System response curves: Available from station. 

SHORT HISTORY

Operation was started with the Wood-Anderson and an accelerograph. The Benioff was added and operational May 20, 1951. 

Both Wilson-Lamison 1 s were added in June 1954. The original pendulum-type timer was replaced in May-June 1971 by the present 

clock. The station has been run for the USGS (and for its predecessors in the U.S. Department of Commerce) by the Montana 

College (formerly the Montana School of Mines) since 1944.

186
GENERAL INFORMATION 

Operated by: 

Address:

Roy E. Wendt for the U.S. Geological Survey

Roy E. Wendt

Rte. 1A

Columbia Falls, MT 59912

Telephone: 406-892-3715 

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

MONTANA

Columbia Falls, MT

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

HHM Hungry Horse- 48.3494 114.0275 1100 11/10/47 Open-- Belt Supergroup (argillaceous

limestone); Precambrian.

INSTRUMENTATION

Seismometer

Code

HHM

Type Component T (sec)

Z 1.05

liO , CjW J . J

Galvo 

Tg (sec)

0.50 

4.0

Type Magnification „ , 3V ,. 6 _ Remarks recording at T

Photo paper 

—— do —— ——

188 K 

10 K Magnification at 4 sec.

Timing system: IBM clock, HRO-60 National receiver. 

System response curves: Available from station. 

SHORT HISTORY

HHM was established before the Dam was erected to monitor seismic activity of the area. Originally maintained by the U.S. 

Bureau of Reclamation, the NEIS took over the operation in about 1960.

187
MONTANA 

Libby, MT

GENERAL INFORMATION 

Operated by: 

Address:

Department of the Army

Libby Dam Resident Office 

Resident Engineer 

Star Route 2 

Libby, MT 59923

Telephone: In Seattle: 206-764-3711 

Address to obtain records:

Seattle District, Corps of Engineers 

Department of the Army 

P.O. Box C-3755 

Seattle, WA 98124

SITE INFORMATION

Code Station name

RXF Rexford — — —— ————

WM Va at--_--------------

Latitude 

(deg N.)

—— 48.45

—— 48.86

—— 48.86

Longitude 

(deg W.)

115.32 

115.12 

115.71

Elev 

(meters)

838 

1231 

1509

Date 

opened

2/22/70 

10/01/76 

10/01/76

Date 

closed

Open— 

—do— 

--do-­

Foundation;

Calcareous 

Do. 

Do.

geologic age

argillite; Precambrian.

INSTRUMENTATION

Code

TT>MSeismometer Galvo Type Magnification ,. .

Type Component T (sec) T (sec) recording at T

Ron-inff /,A8 1 A-------- 7 1f\ --- Hoi 1 f-rvT-Hov --- Tel eme1-eY-e/1 1-/-> the nnuerRXF, YKM: Ranger SS-1- 1.0 ——do— ——

house at Libby Dam.

Do.

Timing system: Kineraetrics DTS-1 digital timing system. 

System response curves: Uncalibrated. 

SHORT HISTORY

LDM was established to monitor the local seismicity around the Libby Dam before, during, and after the filling of the 

reservoir. Having supported several other stations run by the University of Montana, the U.S. Army Corps of Engineers decided 

in 1976 to operate its own additional stations and thus opened RXF and YKM.

188
GENERAL INFORMATION 

Operated by: 

Address:

University of Montana

Earthquake Research Laboratory 

Geology Department 

University of Montana 

Missoula, MT 59182

Telephone: 406-243-6422 or 243-2341 

Address to obtain records:

As above. 

SITE INFORMATION

MONTANTA 

Missoula, MT

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

BBM Big Bend———————————— 48.3764 115.3275 719

BCB Big Creek Baldy——————— 48.6351 115.5454 1756

BLK Black Butte————————— 48.8547 115.1177 969

CFM Cliffside——————————— 48.2081 115.4583 898

CKM Coopers Lake————————— 47.0666 112.9099 1353

GBM Granite Butte———————— 46.8593 112.4559 2237

HLM Helmville——————————— 46.8894 112.9331 1365

LBM Little Butte————————— 46.5149 111.8537 1524

LFM Lubrecht Forest-—————— 46.8898 113.4527 1256

LHM Lake Helena—————————— 46.6756 111.9434 1117

MSO Missoula———————————— 46.8292 113.9406 1264

PNK Pinkham Creek———————— 48.7677 115.0880 1150

SWP Swamp Creek—————————— 48.6068 114.9850 1157

TEE Teeples Ranch———————— 48.3795 115.5881 805

WCM Warland Creek———————— 48.4583 115.1028 1704

WHM Wild Horse Parks—————— 46.7621 113.1812 1792

YCM YMCA Camp——————————— 46.5256 112.3942 1597

2/71

7/07/72

2/07/71

2/71

8/02/74

10/09/74

9/03/74

10/09/74

8/02/74

7/09/74

10/04/76

10/04/76

7/09/74

10/04/76

10/04/76

10/04/76

10/04/76

10/04/76

10/09/74 10/04/76

11/73 Open—

2/71 7/10/74

2/71 10/04/76

2/71 10/04/76

2/71 7/11/74

9/06/74 10/04/76

8/06/74 10/04/76

Alluvium; Quaternary.

Quartzitic argillite; Precambrian.

Do.

Do.

Do.

Diorite and gabbro; Cretaceous. 

Alluvium; Quaternary. 

Diorite; Tertiary.

Unconsolidated gravel, silt, and 

clay; Tertiary.

Alluvium; Quaternary. 

Quartzite; Precambrian. 

Quartzitic argillite; Precambrian.

Silty glacial lake deposits; 

Quaternary.

Glacial outwash; Quaternary. 

Argillite; Precambrian. 

Volcanic rocks; Tertiary. 

Alluvium; Quaternary.

189
MONTANA--Continued 

Missoula, MT

INSTRUMENTATION

Seismometer

Code

All stations 

MSO

Type

Mark L-4C —————— •

Benioff 1051 ——— •

Benioff 1101 ——— •

Component T (sec)

Z 1.0

Z 1.0

NS,EW 1.0

- —— Z,NS,EW 15.0

Galvo Type Magnification 

T (sec) recording at T

0.06 Develocorder 1000 K

.75 Photo paper 100 K 

.75 —— do ———— 100 K 

100.0 —— do ———— 1.5 K

Remarks

Magnification at 10 Hz 

(approximated) .

WWSSN. 

Do. 

WWSSN. Magnification of 

Z is 3 K.

Timing system: Direct recording of WWVB. MSO uses WWSSN Model 8684 (Geotech) transistorized 60-Hz current source controlled 

by a quartz crystal.

System response curves: MSO--see figure 1, p. 363. Others—see figure 2, p. 363. 

SHORT HISTORY

BBM, BCB, BLK, CFM, PNK, SWP, TEE and WCM belonged to the Libby Dam array. They were originally funded by the USGS and 

later by the U.S. Army Corps of Engineers. The Corps now maintains its own small array in the area. 

CKM, GBM, HIM, LBM, LFM, LHM, WAM, and YCM belonged to the Helena-Ovando array. 

MSO is equipped with instruments from the old WWSSN station at Bozeman (BOZ) and is funded by the USGS.

190
MONTANA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

_ , „. . . Latitude Longitude Code Station name , , „ , , , ,. , (deg N.) (deg W.)

(BS-MA) Billings--

(DI-MA) Dillon -- —

(FR-MA) Forsyth ——

(GI-MA) Glendive--

(HV-MA) Havre — — -

(HY-MA) Hysham -- —

(SW-MA) Sweetgrass

INSTRUMENTATION

Code

(AN-MA), (BS-MA), 

(FR-MA), (GI-MA), 

(HV-MA), (HY-MA), 

(SW-MA) :

(DI-MA):

(HV-MA) (3d oper.), 

(LN-MA):

—————————— 46.7522 106.0917

—————————— 45.7322 108.8922

—————————— 45.1736 112.4478

—————————— 46.1000 106.4403

—————————— 47.1928 104.2194

—————————— 45.9728 107.0817

—————————— 47.2119 109.1489 

—————————— 48.9689 111.9628

Seismometer

Type Component T (sec)

Sprengrether ——— Z,NS,EW 20.0 

Geotech S-13 ——— Z,NS,EW 1.0

Geotech S-13 —— Z,NS,EW 1.0

flant-ar-h--------- 7 MQ PIJ Oft ft

Elev Date Date 

(meters) opened closed

907 11/16/64 6/11/65 

1219 11/28/67 12/10/67 

1859 5/23/66 5/24/66 

823 7/07/63 8/05/64 

732 7/17/63 8/05/64

884 10/25/65 12/31/65 

8/03/67 12/10/67 

8/30/68 9/09/68

975 11/30/64 9/19/65 

1448 11/07/67 12/10/67 

1113 10/.16/65 9/13/66

Galvo Type

T (sec) recording

--- Magnetic tape, 

35-mm film. -

—— do ______

--- Magnetic tape

Magnetic tape

Foundation; geologic age

Sandstone and shale.

Sandstone. 

Siltstone.

Loose sand. 

Sandstone.

Magnification _ . 

„ Remarks

0

(AN-MA): 210 K 

(FR-MA): 50 K 

(GI-MA): 110 K 

(HY-MA): 180 K 

(SW-MA): 70 K

--- Portable system. 

Do.

-__ T\ n

191
MONTANA—Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

192
MONTANA

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 323-8111 ext. 2571 

Address to obtain records:

As above. 

SITE INFORMATION

Code

GCR (YPGC) 

(HL) 

(NE) 

(YPBB) 

(YPDC) 

(YPHB) 

(YPHR) 

(YPRL) 

(YPWY)

Station name

•n,

Latitude Longitude Elev Date Date Foundation; geologic age 

(deg N.) (deg W.) (meters) opened closed

- —— 44.7962 111.

_____ /./. 0-710 111

North East Entrance ——— 45.0053 110.

- —— 44.7510 111.

- —— 45.1617 109.

• —— 44.6058 111.

.1065 

.3382 

.0102 

.1168 

.2397 

.1953 

,3160 

,3017 

.0968

2075 1/73 Open2050 1964 1972 

2257 1964 1972 

2085 1/73 Open2025 1/73 — do— 

2157 10/74 10/76 

2060 1/73 Open-- 

1951 10/74 10/76 

2292 10/74 Open—

INSTRUMENTATION

Code

(NE), (HL) 

GCR

All other 

stations

Type

: EV-17 ——————— - 

Mark L-4C ——— -

—— do —————— -

—— do ——————— -

Seismometer

Component T (sec)

1.0

1.0 

1.0

1.0

Galvo Type Magnification Remarks 

T (sec) recording at T

--- Photo paper --- — - 

--- Develocorder — - Telemetered to MHS.

Timing system: WWVB recorded directly with a custom-chronometer backup. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations are part of the Yellowstone network.

Many of these stations have also been recorded on magnetic tape at various times, arid these records are also available. 

Older data (before 1972) may not be complete in the archives.

193

SITE INFORMATION— continued

Code Station name

SIX Station 2 — — — —— — — ——

WSR Warm Springs Repeater- —

INSTRUMENTATION

NEVADA— Continued 

Las Vegas, NV

Latitude Longitude Elev Date Date _ , . . , 

, , „ -. f , ,, , /• 4. \ j i j Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed

37.1940 116.1613 1632 1964 1970 Hard rock 

37.0837 116.4438 2190 10/75 Open-- Do. 

38.0658 117.2280 1890 1965 1970 Do. 

38.2017 116.1750 1585 1965 1972 Alluvium. 

38.3833 116.1917 1768 1965 1970 Do. 

38.1914 116.3989 1890 1965 1970 Hard rock. 

37.2360 116.5160 —— 1970 1973 Do.

Seismometer Galvo Type Magnification „ __ _,_

Code Type

All stations Mark L-4C, NGC-21,- 

or Geotech S-13.

Component T (sec) T (sec) recording at T

Z 1.0 --- Develocorder 50-200 K ——

Timing system: WWVB and IRIG signals recorded directly. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

This laboratory originally was part of the USC&GS, then run as NOAA's Earth Sciences Laboratory. In May 1973 it became part 

of the USGS.

199
GENERAL INFORMATION

NEVADA 

Reno, NV

Operated by: University of Nevada

Address: Seismology Lab 

Mackay School of Mines 

University of Nevada 

Reno, NV 89507

Telephone: 702-784-4975 

Address to obtain records: 

As above . 

SITE INFORMATION

Code

(ANC) 

BGN 

(BLM) 

BUN 

(BOD) 

(BON) 

(CAN) 

CMN 

CND 

(COL) 

(COR) 

(COT) 

(DOG) 

EKO 

(EST) 

(EXC) 

(FER) 

FPN 

(GAR) 

(GET) 

(GIL) 

(HSP) 

(HVL) 

KVN 

(LBP) 

LDV

LUN 

200

Station name

Elko — — ————— — ——

Gillis — ——— —— — ——

Latitude 

(cleg N.)

—— 41.6761

—— 39.1540

—— 40.4315

—— 38.1097 

—— 40.8160

OO O o Q ~J

—— 38.1447

OQ / / Q O

—— 40.8122

—— 38.0913

—— 39.2028

—— 38.4662

—— 39.0510

—— 38.4320

—— 41.0975

Longitude 

(deg W.)

118.7537 

118.5969 

118.0910 

117.2218 

118.9702 

118.3017 

118.1932 

117.5278 

115.2872 

118.0542 

118.7808 

118.7718 

118.2178 

115.7762 

118.3267 

118.3242 

118.1750 

118.1550 

118.4743 

117,6843 

118.5347 

118.5810 

118.5390 

118.1000 

118.7390 

119.3906 

118.2097

Elev 

(meters)

2249 

1527 

1951 

1500 

2195 

1582 

2015 

1792 

2243 

1835 

3170 

1890 

1914 

1615 

1780 

1823 

1646 

2255 

1585 

2137 

1676 

1810 

1856 

1829 

2280 

1798

Date 

opened

5/76 

3/74

5/76

2/75 

1964 

11/75 

11/74

8/74

12/74 

3/76

7/76 

7/74

3/76 

3/74

, e . Foundation; geologic age

Open-- --- 

8/75 

7/75

—do—

— do— 

1976 

Open-- — - 

—do-- 

1976 

2/76 

8/75 

3/76 

Closed —— 

4/76 

Open — —— 

— do—

7/75

1976 

6/77 

7/75 

4/76 

4/76 

Open-- --- 

— do — 

5/76 

Closed ——
SITE INFORMATION— Continued

Code

LVK 

(MAB) 

(MAM) 

(MAR) 

(MCR) 

(MIL) 

MNA (MIN) 

(MON) 

NRR 

(PAR) 

PNR 

(PPK) 

(PZC) 

QRV 

(QUA) 

REN 

(RYN) 

(SIM) 

(SOD) 

STM 

(SWN) 

(TEE) 

TNP 

UVN 

WCN 

(WLD) 

WMN

Station name

Latitude 

(deg N.)

—— 40.1870

—— 38.4292

—— 37.6060

JO .£.£.£. J

——— 39.5720

——— 38.7707

—— 38.3370

—— 37.9652

—— 41.6972

—— 38.3145

—— 39.5400

oo £OQ o

—— 38.4750

—— 39.1140

—— 40.4423

—— 39.3106

—— 40.9800

Longitude 

(deg W.)

118.5245 

118.3027 

118.9892 

118.2648 

118.9937 

118.1858 

118.1567 

118.7758 

119.8490 

117.8965 

118.7938 

118.0272 

118.5683 

117.9550 

118.5000 

119.8131 

118.5230 

117.7675 

118.2925 

118.2000 

118.0623 

118.4285 

117.2180 

118.1583 

119.7563 

118.5747 

117.9200

Elev Date 

(meters) opened

1225 

2039 

2896 

1844 

2267 

2030 

1525 

2179 

1634 

1774

2255 

2103 

1433 

1951 

1383 

1585 

1899 

1463 

2020 

2298 

2140 

1932 

1926 

1709 

1798 

1524

1970 

5/76

1964 

6/76

7/75 

3/74

1911 

7/76

1972 

10/74

8/31/64 

9/13/64 

1972 

8/74 

3/74

NEVADA— Continued 

Reno, NV

Date ,, , . . , 

, , Foundation; geologic age

11/75 

o nc.

1974 

2/76 

Open-- --- 

3/76

— do — 

— do— 

—doClosed --- 

7/76 

Open — --- 

8/75 

2/76 

2/75 

Open — --- 

— do— 

2/76 

7/75 

7/75 

2/76 

Open— 

12/69 

Open-- --- 

7/75 

7/75

INSTRUMENTATION

Code Type

Seismometer

Component T (sec) T

Galvo Type Magnification Remarks 

(sec) recording at T

Most stations Mark L-4C or Ranger 1.0 Magnetic tape Telemetered to Reno.

201
INSTRUMENTATION— Continued

Code Type

BUN Benioff ------

KVN --do —— — —— —

MNA --do — —— — ——

TNP --do —— — ———

WCN --do — —— —— —

NEVADA— Continued 

Reno, NV

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

————— Z,NS,EW 1.0 —— —do —————— —— Do.

————— Z,NS,EW 1.0 —— --do ——————— —— Do.

————— Z,NS,EW 1.0 —— --do ——————— —— Do.

————— Z,NS,EW 1.0 —— --do ——————— —— Do.

Timing system: Sprengnether TS-210 digital chronometer.

System response curves: Stations with Mark L-4C or Ranger seismometers—see figure 2, p.363. Others available from station.

SHORT HISTORY

REN started in 1911 with a Wiechert and a Ewing duplex and operated through the 1930's. The station was opened again by 

the University of California, Berkeley, in 1948 in cooperation with the University of Nevada. This cooperative station became 

the University of Nevada's responsibility in 1963.

The stations in the Mina area are supported by USGS grants.

202
NEVADA 

Albuquerque, NM

GENERAL INFORMATION 

Operated by: 

Address:

Sandia Laboratories

Sandia Laboratories 

Albuquerque, NM 87115

Telephone: 505-264-1468 

Address to obtain records:

As above. Not generally made available. 

SITE INFORMATION

Code

(BMN)

TDTJ

Station name

Latitude 

(deg N.)

—— 40.4315

—— 39.1313

—— 35.7122 

—— 38.0747

Longitude 

(deg W.)

114.8920

114.8436

117.2225

Elev 

(meters)

1500

2011 

1061

Date 

opened

12/67

10/63

9/61

Date Foundation; geologic age closed

--do--

INSTRUMENTATION

Seismometer

Code

(BMN) 

ELY 

NEL

TPH

Type

Geotech 18300 -----

Geotech 18300 — — -

Benioff 1101 — ———

Component T (sec)

Tf.f.° -If. 0 Q

—— 144.8°, 54.8° 1.0

£j 1 . JJ

—— 142°, 52° .8

. 0

—— 140°, 50° .8

Galvo Type Magnification 

T (sec) recording at T

--- Magnetic tape 

--do —— — — --

--do —— —— --

--do ------

--do, ---- — ——

--do -------

.2 --do —— —— ——

.2 —do — —— —— 

.-do ——— — —

--do ——— — — 

--do — — —— —

.2 --do ——— — — 

.2 --do ————— -- 

--do — — —— - 

--do -------

Variable 

--do ----

--do ——

--do ----

—do — —

--do ——

—do — — 

—do — — 

— do - —— 

--do — —

--do ——

—do — — 

--do —— - 

--do —— - 

--do —— -

Remarks

...

Timing system: IRIG time code imposed at central recording site at the Nevada Test Site. 

System response curves: Not available. 

SHORT HISTORY

These stations are part of a net surrounding the NTS (Nevada Test Site). They are used for recording scheduled explosions 

and do not operate all the time. Stations are remotely controlled from NTS. Data are not available to the public. At times 

data are recorded on a 24-hour basis by the USGS in Las Vegas. The USGS records the short-period vertical channels at high gains 

using their own timing and recording systems.

203
NEVADA 

Berkeley, CA

GENERAL INFORMATION 

Operated by: 

Address:

University of California, Berkeley

Seismograph Station 

University of California 

475 Earth Sciences Building 

Berkeley, CA 94720

Telephone: 415-642-3977 

Address to obtain records:

As above. 

SITE INFORMATION

Code

(FAL) 

(YER)

Station name

Latitude 

(deg N.)

jo . yoo j

Longitude 

(deg W.)

118.7767 

119.1600

Elev 

(meters)

1207 

1335

Date 

opened

7/02/56 

7/03/56

Date 

closed

6/57 

6/57

Foundation; geologic

Alluvium; Quaternary, 

Do.

age

INSTRUMENTATION

<

Code Type

(YER) --do ————————— -

Seismometer

Component T (sec)

Galvo

T (sec) 

8

2.0

2.0

Type Magnification _ ,

recording at T

--do —————

Timing system: Spring-wound chronometer. 

System response curves: Not available. 

SHORT HISTORY

(FAL) was established in the City Hall of Fallon, Nev.

(YER) was established with the cooperation of the City of Yerington, Nev.

REN was also established by the University of California, Berkeley, in 1948, in cooperation with the University of Nevada. 

This station was given to the University of Nevada in 1963. (See NEVADA, University of Nevada.) The early records reside at 

Berkeley.

204
NEVADA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(AT-NV)

(CQ-NV)

(CU-NV)

(EK-NV)

(EY-NV)

(EY2NV)

(FA-NV)

(GF-NV)

(LM-NV)

(LO-NV)

(MN-NV)

(NT-NV)

(NT2NV)

(OB2NV)

(OB3NV)

(RH-NV)

(ST-NV)

(SZ-NV)

(TP-NV)

(WI-NV)

(WZ-NV)

Station name

Austin---------------

Caliente ———— ———— •

Currant — - —————— -•

Eureka-------- —— - — •

£1y ———————————————————————————— .

--do---- -------------

Faultless- —— -------

Goldfield ———————— -

Lake Mead ——— -- —— -•

Lovelock- — — -_--___.

Mina — —— - —— ---- — --

Nevada Test Site —— -

—do ———————————— -

Oak Springs Butte — --

—do ———————————— -

Rawhide Mountain-----

Stillwater ——————— •

Shoal ——————————— •

Tippipah — — —— ————

Winnemucca —— -- — --•

Warm Springa —————— •

Latitude 

(deg N.)

--- 39.4814

— 37.9042

--- 38.6772

— 39.2089

— 39.4100

--- 39.4314

--- 38.6406

— 37.9175

--- 36.5825

--- 39.9353

— 38.4361

— 37.2758

— 37.2533

--- 37.2253

--- 37.2325

— 38.2267

— 39.4381

— 39.2036

•-- 37.2003

— 41.3506

— 38.0628

Longitude 

(deg W.)

117.0739

114.4708

115.4550

115.7103

115.3128

115.3178

116.2230

117.2017

114.5353

118.8394

118.1481

116.4183

116.2853

116.0578

116.0542

116.3814

118.5800

118.3800

116.2261

117.4583

116.4397

Elev 

(meters)

1981

1804

1646

1951

2012

2012

1920

1707

536

1280

1524

1987

2185

1542

1609

1768

1219

1606

2256

1524

2073

Date 

opened

1/15/62

4/23/63

4/13/68

11/01/67

9/09/63

11/11/63

4/21/63

4/19/68

3/01/66

6/03/77

2/08/63

11/25/61

5/09/62

2/23/63

9/19/61

8/26/76

9/10/76

8/16/76

4/20/77

4/21/71

1/30/63

1/05/63

12/06/61

12/10/61

11/07/67

Date 

closed

5/14/62

7/12/63

U/26/68

12/10/67

3/09/64

11/02/64

6/10/63

4/26/68

3/12/66

Open---

3/29/63

12/20/61

5/14/62

3/29/63

1/15/69

4/01/77

4/01/77

Open ——

Open- —

8/02/71

3/29/63

2/08/63

12/16/61

3/03/64

12/10/67

Foundation; geologic age

Metamorphics.

Limestone.

Limestone.

Sandstone.

——

...

...

——

——

——

Limestone and shale; Mesozoic.

——

——

——

——

——

——

——

...

Limestone; Mesozoic.

Porphyritic granodiorite.

205
INSTRUMENTATION

NEVADA--Continued 

Garland, TX

Code

Seismometer

Type Component T (sec)

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

(AT-NV), (EY-NV),

(GF-NV), (LM-NV),

(SZ-NV), (TP-NV): Benioff- Z,NS,EW

(AT-NV) (2d oper.),

(CU-NV, (EK-NV),

(LM-NV) (2d oper.),

(LO-NV), (MN-NV),

(RH-NV), (ST-NV),

(WI-NV): Benioff- Z,NS,EW

Sprengnether—— Z,NS,EW

(AT-NV) (3d oper.),

(CQ-NV), (EY-NV)

(2d oper.),

(WZ-NV): Geotech S-13——

Geotech-

- Z,NS,EW

- Z,NS,EW

(EY2NV), (FA-NV),

(NT-NV), (NT2NV),

(OB2NV): Geotech S-13——— Z,NS,EW

1.0

(OB3NV): Geotech 18300—— Z

1.0

20.0

1.0

20.0

1.0

1.0

Magnetic tape, (AT-NV): 600 K

35-mm film. (EK-NV): 640 K

(SZ-NV): 250 K

(TP-NV): 140 K

-do-

-do-

(CU-NV): 140 K

(EY-NV): 600 K

(MN-NV): 600 K

(WI-NV): 460 K

Magnetic tape (AT-NV): 600 K 

(CQ-NV): 60 K 

(EY-NV): 600 K

--do——————

Magnetic tape (NT-NV): 250 K

(NT2NV): 200 K

(OB2NV): 600 K

-doPortable system.

Do.

Do.

Outrigger site.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance)'. 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

Five additional sites in Nevada ran strainmeters only, and four sites ran accelerometers only. Information on these 

nine sites are not included in this publication but can be obtained from Teledyne Geotech, Garland, Tex.

206
GENERAL INFORMATION

Operated by:

Address:

Lawrence Livermore Laboratory 

of the University of California

Seismic Research Group, L-42 

Lawrence Livermore Laboratory 

P.O. Box 808 

Livermore, CA 94550

Telephone: 415-447-1100 ext. 3475 

Telex: 34-6407 

Address to obtain records:

As above. 

SITE INFORMATION

NEVADA 

Livermore, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

MNV

—————— 40..7448

118.1544

2210

1507

11/68

4/68 --do--

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

ELK

MNV

SprengnetherBenioffZ,NS,EW 20.0

Z,NS,EW 1.0

Magnetic tape 100 K

Magnetic tape Variable

Broadband system. Magnification at 1 Hz. Telemetered to Livermore, Menlo 

Park, and GLD.

Telemetered to Livermore, 

Menlo Park, and GLD. 

Broadband system.

Timing system: IRIG time codes B and C synchronized to WWV. 

System response curves: See figure 5, p. 364. 

SHORT HISTORY

MNV was originally an AFTAC station. A vertical-component broadband system was installed just prior to AFTAC's 

departure.

ELK and MNV acquired their three-component systems in 1977. These stations are intended to monitor underground test explosions and are also used in research.

207
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-232-8111 ext. 2321 

Address to obtain records:

As above. 

SITE INFORMATION

NEVADA

Menlo Park, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(CNBC) 

(CNEC) 

(CNHC) 

(CNHM)

(CNPS)

(DFLM) 

(DFMM) 

(DFOD) 

(NRCE) 

(NRCP) 

(NRGF) 

(NRGM) 

(NRSL) 

(NRWP) 

(NTH) 

(NT12) 

(NT13) 

(NT14)

(NT16) 

(NT17) 

(NT18) 

(N119)

Base Camp——---—--- 

Easy Chair---——-----

Hobble Canyon--------

Halligan Mesa----—--

Hot Creek Ranch------

Pritchards Station--- 

Slanted Butte——----

Lost Mine------------

Magruder Mountain----

Oasis Divide---------

Cedar Pass-----------

Cactus Peak----------

Goldfield————————- 

Groom Range----------

Slate Ridge ——————— - 

Worthington MountainFirst Aid Station----

Pahute Southeast-----

Thirsty----——-------

Stockage Wash--------

Pahute Southwest-----

Airs trip-------------

Buckboard Mesa-------

Grass Spring---------

Dead Horse Flat———- 

Gold Flat Peak—————

38.3113

38.4688

38.5907

38.5047

38.5232

38.7660

38.6280

37.5928

37.4193

37.5530

37.7280

37.7498

37.6810

37.5267

37.3083

37.9458

37.2783

37.2297

37.1570

37.1443

37.2263

37.0925

37.1428

37.4293

37.2833

37.4228

116.2773 

115.9983 

116.2455 

116.1465 

116.3730 

116.2037 

116.1480 

117.9268 

117.5935 

117.7527 

116.3107 

116.8675 

117.2458 

115.8017 

117.4147 

115.6292 

116.4367 

116.4468 

116.6673 

116.2632 

116.5067 

116.3160 

116.3857 

116.3920 

116.3050 

116.!

1591

1682

1811

2210

1786

1942

1960

1661

2170

2173

2170

1920

1942

1963

1890

1999

1990

1628

1737

1891

1667

1524

1649

2135

1603

9/26/69

9/26/69

9/26/69

9/26/69

9/26/69

9/26/69

9/26/69

5/26/70

3/06/70

5/26/70

7/03/71

7/11/71

10/18/71

11/16/71

7/14/71

6/19/71

12/17/68

6/08/69

7/12/69

12/17/68

6/08/69

12/17/68

12/17/68

6/08/69

6/22/69

6/08/69

10/01/70

10/01/70

10/01/70

10/01/70

10/01/70

10/01/70

10/01/70

1/71

1/71

12/73

12/73

12/73

12/73

12/73

12/73

12/73

2/73

2/73

2/73

2/73

2/73

2/73

4/01/71

2/73

2/73

2/73

208
SITE INFORMATION- -Continued

Code

(NT21) 

(N222) 

(NT23) 

(N124) 

NYC (NYCH) 

NYS (NYSR) 

NYJ (NYJT) 

NYM (NYMC) 

NYV (NYVN) 

NYR (NYRS) 

(NYND) 

(NYNC)

Station name

Vern ——————— ———— -

Latitude 

(deg N.)

- —— 37

- —— 37

- —— 37

- —— 37

- —— 37

- —— 37

- —— 37

.3752 

.2135 

.3013 

.2863 

.1550 

.0325 

.0080 

.2313 

.1128 

.0553 

.1327 

.1417

Longitude 

(deg W.)

116, 

116, 

116. 

116. 

116. 

116. 

115, 

116, 

115, 

116, 

116, 

116.

,4342 

.3157 

.6162 

.5145 

.1553 

,1688 

,9747 

.0523 

.9900 

.0917 

.0980 

.0878

Elev 

(meters)

1637 

2198 

1838 

1936 

1695 

1509 

1286 

1603 

1442 

1279 

1094 

1329

Date 

opened

6/08/69 

2/12/70 

6/14/69 

9/05/69 

1/71 

1/71 

1/71 

1/71 

1/71 

1/71 

8/17/71 

4/21/71

NEVADA— Continued 

Menlo Park, CA

Da te 

, , Foundation; geologic age closed

2/73 

2/73 

2/73 

2/73 

1/73 

1/73 

1/73 

1/73 

1/73

1/73 

1/73 

8/16/71

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

(NT14), (N222), 

(N124): EV-17- 1.0 Develocorder Telemetered to Menlo Park.

All other

stations: Mark L-4C- 1.0 Do.

Tilling system: WWVB recorded directly as well as IRIG-C. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

The (CN--) stations constitute the Central Nevada Test Site network.

The (DF--) stations listed above make up part of the Death Valley-Furnace Creek network; four other stations in this network 

are in California.

The (NR--) stations constitute the Regional network, one of the stations being in California.

The (NT--) stations make up the Pahute Mesa network. The numbering sequence on these stations reflects the fact that when 

a station was moved, the new location was given a code which reflected this change: (NT19) became (N119); (NT22) was moved 

twice, the final location being (N222); and (NT24) became (N124). This network also has alias code names for each station which 

can be obtained from the station operator.

The (NY--) stations constitute the Yucca Flat network.

209
NEVADA 

Pasadena, CA

GENERAL INFORMATION 

Operated by: 

Address:

California Institute of Technology

Seismological Laboratory 252-21 

California Institute of Technology 

Pasadena, CA 91125

Telephone: 213-795- 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

RUT Ruth ——————————— -

INSTRUMENTATION

Code Type

^f1 ^ ^ngluUf , El6V , DatC , ?3t% Foundation; geologic age 

(deg N.) (deg W.) (meters) opened closed

to Permian.

Seismometer Galvo Type Magnification Remarks

Component T (sec) T (sec) recording at T

Timing system: Crystal-controlled clock. 

System response curves: Not available. 

SHORT HISTORY

RUT was established by C.I.T. in cooperation with University of California, Berkeley, and Kennecott Copper Corp. The 

station is sometimes referred to as Ely.

210
GENERAL INFORMATION

Operated by:

Address:

New Hampshire Highway Department 

for the U.S. Geological Survey

New Hampshire Highway Department

Box 82

Twin Mountain, NH

Address to obtain records:

Unknown. 

SITE INFORMATION

NEW HAMPSHIRE 

Twin Mountain, NH

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

FNN Franconia Notch- 44.1600 71.6817 1060 1967 1975 Granite.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

T (sec)

Type Magnification Remarks 

recording at T

FNN Texas Instruments---- 1.0 35-mm film Four instruments in an 

array.

Timing system: Sprengnether TS-100. 

System response curve: Uncalibrated. 

SHORT HISTORY

The small array was set up to monitor the activity around the Great Stone Face, so that the State Highway Department could 

evaluate the threat to this natural landmark created by a nearby highway.

211
NEW HAMPSHIRE 

Cambridge, MA

GENERAL INFORMATION 

Operated by: 

Address:

Massachusetts Institute of Technology

Department of Earth and Planetary Sciences 

Building 54, Room 527 

Massachusetts Institute of Technology 

Cambridge, MA 02138

Telephone: 617-253-7796 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

(DNH) Durham ————————— •

(ONH) Oakhill, Concord —— - 

PNH Pitcher Mt. —————— •

(WNH) Whiteface ——————— -

INSTRUMENTATION

Code Type

Latitude 

(deg N.)

Seismometer

Component

Longitude 

(deg W.)

70.8947 

71.5056 

72.1358 

71.3997

To (sec)

Elev Date Date 

(meters) opened closed

24 1/76 Open-- 

280 12/75 — do— 

659 1/76 --do-- 

220 1/76 — do--

Galvo Type

T (sec) recording

Foundation; geologic age

Granodiorite; 

Schist; Early 

Gneiss; Early 

Schist; Early

Magnification 

at T

0

Late Devonian. 

Devonian. 

Devonian. 

Devonian.

Remarks

Timing system: Sprengnether TS-250 digital timing system. Kinemetrics model WVTR Mark IV with time-code stripper. 

System response curves: Not available. 

SHORT HISTORY

(DNH), (ONH), PNH, and (WNH) are temporary stations established for use in the Northeast seismic network. All stations 

operste remotely and are telemetered to the Seismology Laborstory in Cambridge, Mass.

212
NEW HAMPSHIRE 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(LS-NH) Lisbon ————— ————

Latitude 

(deg N.)

—— 43.6208

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

6/14/62

9/27/63 

12/17/66 

1/19/68

, a , Foundation; geologic age

£ / O o /£o _

12/20/66 

1/19/68

INSTRUMENTATION

Seismometer

Code

(LB-NH) : 

(LS-NH) :

(LS-NH) (2d and 

3d oper.) :

Type

Sprengnether---- 

Geotech S-13 ——

Component

Z,NS,EW

Z,NS,EW 

Z,NS,EW

Z,NS,EW 

Z,NS,EW

To (sec)

1.0

1.0 

20.0

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape, (LS-NH): 100 K 

35-mm film.

—— do —————— 

—— do ——————

Magnetic tape --- Portable system. 

—— —— do —————— --- Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

213
NEW HAMPSHIRE 

Weston, MA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Weston Observatory, Boston College

Weston Observatory 

Concord Road 

Weston, MA 02193

617-899-0950

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

BNH Berlin ——————————

HNH Hanover — — —— —— ——

INSTRUMENTATION

Code Type

BNH Benioff 4681A— 

HNH Mark L-4C ————

Latitude Longitude Elev Date Date Foundation; geologic age 

(deg N.) (deg W.) (meters) opened closed

—— 44.5906 71.2564 472 1/63 Open-- Granite; Devonian. 

—— 43.7053 72.2856 180 6/15/75 —do— Metavolcanics ; Ordovician.

Seismometer Galvo Type Magnification R ^^

Component T (sec) T (sec) recording at T

Timing system: WWSSN standard added at WES. 

System response curves: Available from station. 

SHORT HISTORY

BNH has run continuously since its installation with the exception of September-December 1967 and March 1974-February 1975, 

when the station was closed.

HNH is at the same location as a station run intermittently by Dartmouth College.

The Observatory contributes to the Northeastern United States Seismic Network bulletin.

214
NEW JERSEY 

Paterson, NJ

GENERAL INFORMATION 

Operated by: 

Address:

Philip J. Del Vecchio

Philip J. Del Vecchio 

Station PNJ, P.O. Box 266 

971 East 22nd Street 

Paterson, NJ 07513

Telephone: 201-684-4345 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

PNJ Benioff —— —— ——

Latitude Longitude 

(deg N.) (deg W.)

—— 40.9071 74.1548

Seismometer

Component T (sec)

Me o r\ r\

Elev Date Date ,, , .. . , f . , , , , Foundation: geologic age (meters) opened closed ° ° °

31 3/72 Open-- Soft red shale and sandstone; Triassic.

Galvo Type Magnification p pma »-kc

T (sec) recording at T

0.6 Visible 140 K 

.6 --do--- 2.5 K Operates intermittently 

owing to a shortage of 

paper.

50-75 --do —— .5-2 K Do.

Timing system: Chronometer checked against WWV or CHU several times daily. 

System response curves: Not available. 

SHORT HISTORY

PNJ is equipped with instruments originally used in IGY and IQSY operations; it is supported by loans and donations from 

various organizations.

215
NEW JERSEY 

Palisades, NY

GENERAL INFORMATION 

Operated by:

Address:

Lamont-Doherty Geological Observatory 

of Columbia University

Department of Seismology 

Lamont-Doherty Geological Observatory 

Columbia University 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

Code

CNJ 

GPD 

OGD 

PQN 

(PRIN) 

PVN

„. . . Latitude Longitude Station name , ,., fii,\ (deg N.) (deg W.)

Ogdensburg —————————— 41.0875 74.5958

Pahaquarry —————————— 41.0073 75.0858

Princeton ——————————— 40.3669 74.7179

Peters Valley ——————— 41.1957 74.8697

Elev Date Date „ , , . 

, , i -, i Foundation; geologic age (meters) opened closed

351 2/73 7/74 Shale; Ordovician. 

360 8/76 Open — Green Pond Conglomerate; Silurian.

229 2/73 --do-- High Falls Formation; Silurian.

175 2/73 7/74 High Falls Formation; Silurian.

INSTRUMENTATION

Code

CNJ 

GPD 

OGD

PQN 

(PRIN) 

PVN

Seismometer

Type Component T (sec)

Geospace HS 10-2B —— Z 0.5

—— do ———————————— Z .5

Benioff ——————————— Z,NS,EW 1.0

Geotech 7505A, 8700C- Z,NS,EW 30.0 

Geospace HS 10-2B —— Z .5

Geospace HS 10-2B---- Z .5

Galvo Type Magnification Remark.:

T (sec) recording at T

0.02 Develocorder --- ---

.75 Photo paper 50 K WWSSN. 

100.0 —— do ———— 50 K Do. 

Photo paper, 57.9 K, 49.8 K HGLP . 

magnetic tape. 61.3 K

.02 Develocorder 6400 K Magnification at 20 Hz. 1 

.02 Develocorder --- ---

1 To obtain magnification at 1 Hz, multiply by 7.9 x 10

Timing system: Sprengnether TS-200.

System response curves: See figure 9, p. 366.

SHORT HISTORY

Lamont-Doherty publishes a bimonthly bulletin and a yearly bulletin, available from the Observatory.

216
GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

NEW MEXICO 

Albuquerque, NM

U.S. Geological Survey

U.S. Geological Survey

Albuquerque Seismological Laboratory

Bldg. 10002

Kirtland AFB-East

Albuquerque, NM 87115

505-264-4637 

66-0351

Address to obtain records:

As above.

SITE INFORMATION

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

ABQ Albuquerque————————— 34.9425 106.4575

ALQ ——do—————————————— 34.9425 106.4575

AMMO ——do—————————————— 34.9469 106.4569

CCN Cachucha Ranch——————— 36.8333 106.8333

CDN Cerro Del Durzno—————— 35.4546 107.3485

CNM Chama——————————————— 36.9167 106.5689

COH Cochiti————————————— 35.5802 106.3048

DNM Dulce—————————————— 36.9333 1069958

EST Estancia———————————— 34.8645 105.7228

GNM Golden————————————— 35.2496 106.1926

LAD Ladron Mountain—————— 34.4583 107.0375

LPM Los Pinos Mountain———— 34.3076 106.6336

MLM Mesa Lucera————————— 34.8144 107.1450

(VOL) Volcano————————————— 35.1250 106.7675

WMA West Mesa——————————— 35.0722 106.8563

(WTX) Socorro————————————— 34.0722 106.9458

INSTRUMENTATION

	_____________Seismometer_____________ 

Code Type Component T (sec)

ABQ Johnson-Matheson—-—— Z 1.0

1849

1849

1737

2591

1646

2055

2417

1768

1737

2088

1782

1804

1555

1/01/74

11/28/61

8/74

1/76 

1/76

6/76 

1/76 

1/76 

1/76 

1/76 

5/77

6/77

Open--

--do--

--do-- 

Closed 

Open-- 

Closed 

Open-- 

Closed 

Open--

--do--

--do--

--do--

--do--

--do-- 

12/75 

Open—

Gneiss. Precambrian. 

Do. 

Do.

Basalt; Quaternary. 

Basalt; Quaternary.

Limestone; Pennsylvanian.

Do.

Gneiss; Precambrian. 

Granite. 

Basalt; Quaternary.

Do.

Granite; Precambrian.

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

Develocorder 500 K Array of eight elements,

aperture of 2 km. One 

instrument recorded on 

Helicorder.

217
INSTRUMENTATION--Continued

NEW MEXICO—Continued 

Albuquerque, NM

Seismometer

Code

ALQ 

ANMO

Type

Benioff 

Sprengne 

Geotech

Geotech

1051, 1101 ——

7505A, 8700--

36000 — — —— -

Component

Z,NS 

Z,NS 

Z,NS

Z,NS

,EW 

JEW

,EW

T 

o

1 

15 

30

1

(sec)

.0 

.0 

.0

.0

Galvo Type Magnification 

T (sec) recording at T

0.75 Photo paper- — -

—— Photo papery-­ 

magnetic tape.

Helicorder ,---- 

magnetic tape.

200 

3 

106 K 

50

40

K 

K

, 52 K, 

K

K

Remarks

WWSSN. 

Do. 

HGLP. Z telemetered to 

GLD also.

SRO. Magnification at 25 

sec. Z also recorded

All others Johnson-Matheson- 1.0 Helicorder,—— 200 K 

Develocorder.

at 200 K at 1 sec. 

Digital data of 120-dB 

dynamic range available on tape.

Magnification approximate. All stations 

telemetered to ALQ.

Timing system: WWSSN standard used for all stations except ANMO, which uses a Systron-Donner clock.

System response curves: ALQ—see figure 3, p. 364, and figure 6, p. 365. ANMO--see figure 7, p. 365. Others available 

from station.

SHORT HISTORY

In 1961 the USC&GS established its seismic instrumentation laboratory in Albuquerque after evaluating several sites for 

seismic noise, access to other government facilities, and proximity to a large city. The Laboratory has been engaged in instrument development and deployment of the WWSSN, HGLP, SRO, and ASRO networks and the Tsunami Warning System; it continues in 

a supporting role for these networks.

WXT is operated in conjunction with the New Mexico Institute of Mining and Technology.

218
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Sandia Laboratories

Sandia Laboratories 

Albuquerque, NM 87115

505-264-1468

Address to obtain records:

As above.

Not generally available. 

SITE INFORMATION

NEW MEXICO 

Albuquerque, NM

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(ALB) Albuquerque- 34.9750 106.4386 1935 12/59 Open-­ Granite; Precambrian.

INSTRUMENTATION

Seismometer

Code

(ALB)

Type

Benioff 1051, 1101 ---

Component T (sec)

Z,NS,EW 1.0 

Z, 108.3° .8 

Z,NS,EW 20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

0.2 Magnetic tape

—— do ——————

—— do — -----

15.6 K 

1 K

j K

Z also records

Z also records 

EW recorded 

broadband.

visibly.

visibly, 

as a

Timing system: IRIG time code synchronized to WWV. 

System response curves: Not available. 

SHORT HISTORY

The station operates only during the workweek. The magnification of all the instruments is variable.

219
GENERAL INFORMATION 

Operated by: 

Address:

los Alamos Scientific Laboratory

Group J-13

University of California

Los Alamos Scientific Laboratory

P.O. Box 1663

Los Alamos, NM 87554

Telephone: 505-667-7165 

Address to obtain records:

As above. 

SITE INFORMATION

NEW MEXICO 

Lps Alamos, NM

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date Date 

opened closed Foundation; geologic age

BRC Barley Canyon———————— 35.8903 106.7114

CLP Clara Peak—————————— 36.0358 106.2403

(CZL) Cerro Azul—————————— 36.2833 105.9103

(DMPK) Dead Man Peak———————— 36.4264 106.7757

BUM Eureka Mesa————————— 36.0131 106.8439

FCN Frijoles Canyon—————— 35.7719 106.2503

LCV La Cueva———————————— 35.8828 106.6742

LFC Lake Fork Canyon—————— 35.8769 106.6647

LOA Los Alamos—————————— 35.8247 106.2944

MSA Mount San Antonia————— 36.8592 106.0178

MIL Mount Taylor————————— 35.2519 107.5964

(OTZ) Ortiz Mountain——————— 35.7603 106.1728

RIO Rio Grant——————————— 35.7547 106.1756 

	(Caja Del Rio)

SPD St. Peter's Dome Lookout 35.7578 106.3694

TSP Tesuque Peak————————— 35.7853 105.7814

TIP Tetilla Peak————————— 35.6094 106.2064

INSTRUMENTATION

	_____________Seismometer_____________ 

Code Type Component T (sec)

BRC Mark L4-C————————— Z 1.0

CLP Kinemetrics SS-1--—— Z 1.0

(CZL) Geotech S-13—————— Z 1.0

2261 6/76 Open— 

2591 9/73 —do— 

2128 9/29/76 —do— 

2664 11/22/76 —do— 

2914 1/13/76 —do— 

1945 5/07/73 7/73 

2652 9/73 Open-- 

2451 11/04/75 —do— 

2144 1/12/72 —do— 

3322 10/09/75 —do— 

3335 10/15/75 —do— 

2091 9/17/76 —do— 

2073 2/21/75 9/17/76

2566 9/73 Open-- 

3664 10/14/73 —do— 

2103 10/73 --do-­

Cased well below water table; Permian. 

Basalt; Pliocene. 

Quartzite; Precambrian. 

Sandstone; Triassic. 

Sandstone; Permian. 

Tuff; Pleistocene. 

Tuff; Pleistocene.

Cased well near water table; Permian. 

Tuff; Pleistocene. 

Basalt; Pliocene. 

Rhyolite; Miocene. 

Basalt; Pleistocene. 

Do.

Rhyolite; Pliocene. 

Granite; Precambrian. 

Basalt; Pleistocene.

Galvo Type

T (sec) recording

Magnification 

at T

Remarks

Helicorder, 

Develocorder, 

magnetic tape.

—— do———————

——do———————

42 K

40 K 

42 K

220
NEW MEXICO—Continued 

Los Alamos, NM

INSTRUMENTATION--Continued

Seismometer

Code

(DMPK)

BUM 

FCN 

LCV 

LFC 

LOA 

MSA 

MTL 

(OTZ) 

RIO 

SPD 

TSP 

TTP

Type

Mark L4-3D —————— •

Mark L4-3D —————— • 

Mark L4-C ——————— •

Component T (sec)

-- Z,NS,EW 1.0

, JND , IjW I . U

jINb , EiW 1 . U

Galvo Type Magnification Remarks

T (sec) recording at T 

8 o

--- Helicorder, 

Develocorder , 

magnetic tape.

—— do ———————

—— do —————— 

—— do ——————

—— do —————— 

—— do ——————

—— do —————— 

—— do ——————

—— do —————— 

—— do ——————

—— do ——————

—— do ——————

—— do -------

37 K 

58 K

43 K 

42 K 

21 K 

32 K 

34 K 

43 K 

42 K 

43 K 

40 K 

42 K

Timing system: Geotech TG-110.

System response curves: Available from station.

221
GENERAL INFORMATION 

Operated by: 

Address:

New Mexico Institute of Mining and Technology

Campus Station

New Mexico Institute of Mining and Technology

Socorro, NM 87801

Telephone: 505-835-5212 or 835-5426 

Address to obtain records:

As above. 

SITE INFORMATION

NEW MEXICO 

Socorro, NM

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

BBN Black Butte—————————— 34.4078 106.7456

CLN Carlsbad———————————— 32.4027 103.7318

SNM Socorro————————————— 34.0702 106.9435

SRF Snake Ranch Flats————— 34.2033 107.0900

SRM Socorro (La Joya)————— 34.3419 106.8986

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

BBN: ASC-1———————————— Z,NS,EW 1.0

CLN, SRF, SRM: Custom-designed———- Z 1.0

SNM: Benioff—————————— Z,NS,EW 1.0

1524 2/15/70 12/18/71

1094 4/05/74 Open--

1511 7/62 --do--

1768 1/69 6/69

1522 6/25/69 6/30/70

Alluvium; Tertiary. 

Caliche; Tertiary. 

Welded tuff; Tertiary. 

Alluvium; Tertiary. 

Do.

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

Magnetic tape 28 K

70-mm film

Film- 30 K

Peak magnification of 

324 K at 10 Hz.

Peak magnification of 

400 K at 20 Hz.

LRSM system. Peak magnification of 128 K 

at 5 Hz.

Press-Ewing--- 

Wood Anderson18.0

Horizontal

Film————— 1300 

Photo paper 2800

Timing system: CLN uses a quartz clock checked with WWVB every 2 hours. SNM uses a Geotech digital clock checked with WWVB, 

which is also recorded directly.

System response curves: Not available.

222
GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

NEW MEXICO 

Garland, TX

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(GB-NM) Gasbuggy———————————— 36.6869 107.2261

(GN-NM) Gnome (Carlsbad)—————— 32.2625 103.8569

(LC-NM) Las Cruces—————————— 32.4022 106.5994

(ML-NM) Mogollon———————————— 33.4147 108.8364 

(RT-NM) Raton—————————————— 36.7294 104.3603

(TC-NM) Truth or Consequences—— 33.1842 107.4617 

(TD-NM) Tres Piedras————————— 36.6556 106.1717

INSTRUMENTATION

_________Seismometer____________

Code Type Component T (sec)

(GN-NM), (ML-NM),

(RT-NM): Benioff——————— Z,NS,EW 1.0

(LC-NM), (RT-NM)

(2d oper.)

(TC-NM), (TD-NM): Benioff——————— Z,NS,EW 1.0

Sprengnether---- Z,NS,EW 20.0

(GB-NM), (LC-NM)

(last 3 oper.): Geotech S-13——— Z,NS,EW 1.0 

Geotech——————— Z,NS,EW 20.0

2164

1036

1585

5/29/77 

1/08/62

9/20/61 

9/28/65 

8/02/67 

9/01/69 

9/26/69 

3/13/70 

3/16/70 

9/27/71 

5/08/73

Open--- 

2/15/62

7/23/65

11/15/65

7/16/69

9/16/69

10/10/69

3/26/70

3/26/70

11/10/71

5/22/73

Limestone. 

Limestone; Paleozoic.

1646

1951

1524

2926

12/15/61 2/16/62

12/04/61 

8/14/63

12/20/61 

8/22/63

2/15/62 

3/22/65

5/03/62 

11/26/63

Metamorphics. 

Limestone.

Granite. 

Metamorphics.

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

Magnetic tape, (GN-NM): 115 K

35-mm film. (ML-NM): 270 K

(RT-NM): 250 K

—— do——————— (LC-NM): 370 K 

(TC-NM): 280 K 

(TD-NM): 450 K

——do ———————

-Magnetic tape

——do ——————

Portable system. 

Do.

223
NEW MEXICO—Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

224
NEW YORK 

Binghamton, NY

GENERAL INFORMATION 

Operated by: 

Address:

State University of New York at Binghamton

Department of Geological Sciences 

State University of New York 

Binghamton, NY 13901

Telephone: 607-798-2512 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

BNY Benioff ————— -

Latitude Longitude Elev Date Date „ , . , /-., M \ /.. i, ^ r ^ \ j T j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

Devonian sandstone and shale.

Seismometer Galvo Type Magnification „ . ^

Component T (sec) T (sec) recording at T

- ———— Z 1.0 —— Visible 75 K

Timing system: Sprengnether TS-200.

System response curves: Calibration changes to suit particular needs.

SHORT HISTORY

BNY started in 1970 as a research station.

From 1955 to 1967 a station operated at nearly the same location; it was run by a private individual named Charles 

Elleiott, 577 State Street.

225
NEW YORK 

Buffalo, NY

GENERAL INFORMATION 

Operated by: 

Address:

Canisius College

Seismic Observatory 

Department of Physics 

Canisius College 

Buffalo, NY 14208

Telephone: 716-883-7000 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

BUF Buffalo -----------

Latitude 

(deg N.)

Longitude 

(deg W.)

/o . ojUU

Elev 

(meters)

195

Date 

opened

1912

Date 

closed Foundation; geologic age

INSTRUMENTATION

Seismometer

Code

BUF

Type Component T o (sec)

1.0 

1.0 

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

--- Photo paper ---

—— do ————

—— do ————

Timing system: Power-line frequency clock. 

System response curves: Not available. 

SHORT HISTORY

BUF was inaugurated in 1910 as an early Jesuit Seismological Station; it moved to a new location in 1912. Its original 

instruments were the Weichert's and the Galitzin-Wilip described above. In 1930 a new Galitzin-Wilip was added. The 

Sprengnether's were added in 1946. The station is not currently operating but will be refurbished in the academic year 1977-78.

226
GENERAL INFORMATION 

Operated by: 

Address:

Harry H. Larkin, Jr.

Mr. Harry H. Larkin, Jr. 

189 Van Rensselaer Street 

Buffalo, NY 14210

Address to obtain records:

Unknown. 

SITE INFORMATION

NEW YORK 

Buffalo, NY

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BBF Buffalo-Larkin- 42.8475 78.6442 230 3/51 Closed

INSTRUMENTATION

Code

TJT7T?

Seismometer Galvo Type Magnification „ . „

Type Component T (sec) T (sec) recording at T

Timing system: Not available.

System response curve: Not available.

SHORT HISTORY

BFF was privately operated; some of its equipment was loaned by the USC&GS.

227
GENERAL INFORMATION 

Operated by: 

Address:

Victor S. Aiello

Victor S. Aiello 

3 Central Avenue 

Glen Cove, NY 11542

Address to obtain records:

As above. 

SITE INFORMATION

NEW YORK 

Glen Cove, NY

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

GCY Glen Cove- 40.8583 73.6300 43 2/65 Open-­ Alluvium.

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T^ Remarks

GCY Sprengnether- 3.4 17.6 Photo paper 4.4 K Magnification at 15 sec.

Timing system: Pendulum clock with invar pendulum, corrected daily with CHU or WWV. 

System response curves: Available from station. 

SHORT HISTORY

The station is the avocation of the owner.

228
NEW YORK 

Ithaca, NY

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Cornell University

Department of Geological Sciences 

Cornell University 

Ithaca, NY 14850

607-256-5267

Address to obtain records:

As above for INY records. ITH records not available. 

SITE INFORMATION

Code Station name

INY Ithaca —————————— •

ITH Ithaca —————————— •

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date r , . . , 

,, .. , ,_, ,, -v , ^ -v j T j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

- —— 42.4438 76.4836 238 8/05/72 Open-- Ithaca Member of Genesee Formation; 

Late Devonian.

- —— 42.4500 76.4833 243 1909 1940' s Ithaca Member of Genesee Formation; 

Late Devonian.

Seismometer Galvo Type Magnification R ,

Component T (sec) T (sec) recording at T

INY

ITH

Sprengnether S-5007-- Z,NS,EW 25.0

U.E.D. Lehner-Griffith 2 1.5

Bosch-Omori-- —— ——— NS,EW ——

0.1 Visible Z: 11.7 K

NS: 14 K

EW: 11.9 K

.025 Visible 85 K

Magnification at 1 sec. 

Do. 

Do. 

Do.

Timing system: Sprengnether TS-250 used at INY. 

System response curves: Available from station. 

SHORT HISTORY

Two of the Sprengnether's and the Lehner-Griffith instrument began operation when INY opened; the Sprengnether EW was added 

October 15, 1972.

ITH was located in McGraw Hall on the campus of Cornell University in 1909. 

The University published monthly bulletins during the time ITH was operating.

229
NEW YORK 

New York, NY

GENERAL INFORMATION 

Operated by: 

Address:

City College of New York

Babor Seismograph and Weather Station 

City College of New York 

139th Street and Convent Avenue 

New York, NY 10031

Telephone: 212-690-8203 

Address to obtain records:

Lamont-Doherty Geological Observatory 

Columbia University 

Palisades, NY 10964

SITE INFORMATION

Code Station name

CNY City College ————— -

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date _ , . , 

, , „ . /-,,,-, , \ j i j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed ' 6 6 6

- —— 40.8217 73.9533 —— 5/48 Open-­

Seismometer Galvo Type Magnification „ .

Component T (sec) T (sec) recording at T 

o g o

• ———— Z,NS,EW 2.0, 6.0, 2.2, 6.8, Photo paper 

6.0 7.2

Timing system: WWV recorded with an IBM pendulum-clock backup. 

System response curves: Not available. 

SHORT HISTORY

The station was run for over 20 years under the supervision of Daniel T. O'Connell and Arthur T. Pitschi. It became 

inoperative in 1970. The instruments are expected to again be operational in 1978.

230
NEW YORK 

New York, NY

GENERAL INFORMATION 

Operated by: 

Address:

Fordham University

Seismic Station 

Department of Physics 

Fordham University 

New York, NY 10058

Telephone: 212-933-2233 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

FOR Gallitzin-WilipLatitude Longitude Elev Date Date _ , . . , 

,, „ , /^ ,, -> / >. j -, j Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed ' 8 8 8

—— 40.8631 7:

Seismometer

Component

3.8856

To (sec)

i.o'

1.0 

1.0

1.0 

20.0 

1.0

24 1910 8/76 Fordham Gneiss; Precambrian.

Galvo Type Magnification „ , 

T (sec) recording at T

--- Photo paper --- --- 

—— do ———— 

—— do ————

—— do ————

—— do ————

—— do ———— 

—— do ————

Timing system: Standard Electric Time, Invar Pendulum. 

System response curves: Not available. 

SHORT HISTORY

FOR was inaugurated in 1910 but moved in 1921, 1926, and 1934. It was part of the Jesuit Seismological Association.

231
GENERAL INFORMATION

Operated by: Lamont-Doherty Geological 

of Columbia University

Address: Department of Seismology 

Lamont-Doherty Geological 

Columbia University 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records: 

As above. 

SITE INFORMATION

Code

ADN 

ALF

ALX 

APH 

ATT

(BGR) 

(BKH)

BML 

CLY 

CTR 

(DHN)

DNY 

DSN 

EGN 

ELM

GFN 

HMB 

HNY 

(MRH) 

(MSNY)

Station name

Bank Hill —— —— —— — —

Doyle Hill — —— —— — —

Latitude 

(deg N.)

— 44

— 44

— 42,

.8333 

.2253

.3225 

.8413 

.8358

.8271 

.8594

.8680 

.8513 

.8742 

.8256

.8363 

.8443 

.8595 

.8502

.7928 

.6545 

.8318 

.8392 

.9983

Observatory 

Observatory

Longitude 

(deg W.)

76 

77

75 

74 

78

74 

78

74 

74 

74 

78

78. 

78. 

74, 

78,

78. 

78. 

75, 

78. 

74.

.1197 

.7972

.9279 

.4970 

.1942

.3788 

.1522

.4020 

.4490 

.4600 

.1931

.1688 

.1803 

.4818 

.6433

.4153 

.8525 

,5148 

.2400 

,8621

Elev 

(meters)

137 

671

122 

564 

470

329 

366

305 

579 

585 

491

381 

412 

549 

216

518 

290 

500 

448 

55

Date 

opened

11/24/74 

1/71

8/76 

7/74 

7/71

11/76 

1/16/76

9/71 

9/71 

9/71 

1/16/76

7/71 

7/71 

9/71 

7/71

10/71 

9/71 

7/74 

1/16/76 

2/77

Date 

closed

Open — 

—do—

— do— 

— do— 

1/16/76

3/14/77 

6/76

10/73 

Open— 

— do—

7/28/76

Open— 

1/16/76 

Open— 

7/28/76

7/28/76 

7/28/76 

Open— 

4/77 

4/77

NEW YORK 

Palisades, NY

Foundation; geologic age

Limestone, Trenton Group; Middle 

Ordovician.

Java and West Falls Formations; Late 

Devonian.

Gneiss; Precambrian. 

Do.

Java and West Falls Formations; Late 

Devonian.

Potsdam Sandstone; Late Cambrian.

Java and West Falls Formations; Late 

Devonian.

Gneiss; Precambrian. 

Gneiss; Precambrian. 

Do.

Java and West Falls Formations; Late 

Devonian.

Do. 

Do. 

Gneiss; Precambrian.

Java and West Falls Formations; Late 

Devonian.

Cossayuna Group of Fisher 1 , 1962; Early 

Cambrian.

Java and West Falls Formations; Late 

Devonian.

Marcellus and Skaneateles Shales; 

Middle Devonian.

Java and West Falls Formations; Late 

Devonian.

1 Fisher, D. W., 1962, Correlation of the Cambrian rocks in New York State: New York Geol. Survey Map and Chart Ser. 2. 

232
NEW YORK--Continued 

Palisades, NY

SITE INFORMATION--Continued

Code

OAK 

OCN 

PAL 

PNY 

PTN 

SFO 

SKN 

TBR 

TUS 

UWL 

(WLI) 

WND 

WNY

WPR

Station name

Oakfield —— — —— —— --

Latitude 

(deg N.)

—— 43.0570 

—— 43.8848

—— 41.0042

—— 44.8342

—— 44.5725

—— 41.1962

—— 42.9915

—— 41.1417

—— 43.1800

—— 44.3090

—— 44.3910

—— 44.2547

Longitude 

(deg W.)

78.3372 

74.5293 

73.9092 

73.5550 

74.9828 

74.2600 

76.4672 

74.2222 

78.9592 

74.5433 

76.0098 

74.1525 

73.8595

73.5857

Elev 

(meters)

259 

701 

91 

177 

238 

300 

226 

261 

165 

561 

90 

602 

598

152

Date 

opened

9/71 

7/74 

1949 

8/71 

10/71 

1962 

11/74 

7/75 

6/71 

7/74 

8/74 

10/08/76 

10/71

3/71

Date 

closed

11/74

— do— 

— do— 

— do-­ 

Closed 

Open — 

— do— 

3/74 

Open— 

8/16/76 

Open— 

—do—

--do-­

Foundation; geologic age

Lockport Dolomite; Middle Silurian. 

Gneiss; Precambrian. 

Palisade Diabase; Late Triassic. 

Potsdam Sandstone; Late Cambrian. 

Gneiss; Precambrian. 

Gneiss; Precambrian. 

Oriskany Sandstone; Early Devonian. 

Gneiss; Precambrian. 

Clinton Group; Middle Silurian. 

Gneiss; Precambrian. 

Gneiss; Precambrian. 

Kiskatom Formation; Middle Devonian.

Anorthosite in Adirondack Mountains; 

Precambrian.

Gneiss; early Paleozoic or Precambrian.

INSTRUMENTATION

Seismometer

Code

ADN

Type

Geospace HS 10-2B——

ALF

ALX

APH

ATT

(BGR)

(BKH)

BML

CLY

CTR

(DHN)

DNY

— -do- — --------

—— do ——————— •

—— do ——————— •

— -do---------- •

— -do— — — — --•

—— do ——————— •

—— do ——————— •

—— do ——————— •

—— do ——————— •

—— do ——————— -

—— do ——————— -

- ——— Z

- ——— Z

- ——— Z

- ——— Z

- ——— Z

- ——— Z

- ——— Z

- ——— Z

- ——— NS

- ——— EW

- ——— Z

Component T (sec) 

Z 0.5

.5 

.5 

.5

.5

Galvo Type Magnification 

T (sec) recording at T

0.02 Develocorder 6300 K

02

02

02

02

02

02

02

02

02

02

02

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —————

—— do —— ——

3200 K

6400 K

3160 K

6400 K

2300 K

——

14700 K

8000 K

1200 K

1160 K

x To obtain magnification at 1 Hz, multiply by 7.9 x 10

Magnification at 20 Hz 1 . 

Most stations also 

have a Helicorder with 

a 0.04 galvo.

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do.

233
NEW YORK--Continued 

Palisades, NY

INSTRUMENTATION--Continued

Seismometer

Code

DSN

EGN 

ELM 

GFN 

HMB 

HNY 

(MRH) 

(MSNY) 

OAK 

OCN 

PAL

PNY

PTN 

SFO 

SKN 

TBR 

TUS 

UWL 

VCS 

(WLI) 

WND 

WNY 

WPR

Type

Geospace HS-10-2B----

—— do ————————————

—— do ————————————

—— do ————————————

—— do ———————————— 

—— do ————————————

—— do ————————————

—— do ———————————— 

—— do ————————————

—— do ——————— —— —

Geospace HS-10-2B---- 

—— do ————————————

—— do ————————————

—— do ————————————

—— do ———————————— 

—— do ————————————

—— do ————————————

—— do ———————————— 

—— do ————————————

—— do ————————————

—— do ————————————

—— do —— —— — — — — —

Component

Z

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z

Z,NS,EW 

NS,EW 

Z 

NS,EW

Z

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z 

Z

T Q (sec)

0.5

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5

30.0 

.8 

15.0

.5

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5 

.5

Galvo 

T g (sec)

0.02

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02 

100.0 

75.0

.02

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02 

.02

Type Magnification 

recording at T

Develocorder

—— do ————— 

—— do —————

—— do ————— 

—— do —————

—— do ————— 

—— do ————— 

—— do —————

—— do ————— 

—— do —— ----

Photo paper 

—— do — — — 

Pen and ink 

—— do —— ——

Develocorder

—— do ————— 

—— do ————— 

—— do ————— 

—— do ————— 

—— do ————— 

—— do —————

—— do ————— 

—— do —————

—— do —————

—— do —————

—— do — -----

3160 K

4000 K 

9300 K 

9300 K 

2310 K 

5900 K 

2300 K

12800 K

250 

2800 

3 K

1600 K

11800 K 

6300 K 

5900 K 

21400 K

12800 K 

2300 K 

21400 K 

6400 K 

2000 K 

21400 K

Remarks

Magnification at 20 

Most stations also 

have a Helicorder 

a 0.04 galvo.

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Magnification at 25

Magnification at 20 

Most stations also 

have a Helicorder 

a 0.04 galvo.

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do.

Hz 1 , 

with

sec.

Hz 1 , 

with

1 To obtain magnification at 1 Hz multiply by 7.9 x 10

234
NEW YORK—Continued 

Palisades, NY

Timing system: PAL uses a Sprengnether TS-100. All other stations use a Sprengnether TS-200 digital timing system.

System response curves: See figure 9, p. 366.

SHORT HISTORY

ALF is operated jointly with Alfred University.

CLY, CTR, and EGN are part of the Blue Mountain Lake array. BLM was a forerunner of this array.

PNY is operated jointly with the State University of New York at Plattsburgh, Department of Earth Sciences.

Telemetry for the New York stations is funded by the USGS.

Lamont-Doherty publishes a bimonthly bulletin and a yearly bulletin, available from the Observatory.

235
NEW YORK 

Rochester, NY

GENERAL INFORMATION 

Operated by: 

Address:

George E. Mercier

Rochester-Mercier Observatory--Closed 

100 Sandringham Dr. 

Rochester, NY 14610 

(Obsolete)

Address to obtain records:

No longer available. 

SITE INFORMATION

Code Station name

RMO Rochester-Mercier---

Observatory

INSTRUMENTATION

Code Type

RMO Willmore ———— -

Latitude Longitude Elev Date Date _ , . ... 

,, „ N ,, 6 rl . , ^ , , , , Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed ° ° e

- —— 43.1317 77.5386 141 3/22/68 9/71 Limestone and granite.

Seismometer Galvo Type Magnification R , „

Component T (sec) T (sec) recording at T ".-m.. .. «.~

- ———— Z 1.0 0.5 Photo paper 100 K

- ———— NS,EW 60.0 45-60 --do —————

Timing system: Springer pendulum clock timed with WWV daily. 

System response curves: Not available. 

SHORT HISTORY

RMO was started as a high school project. Reports were sent to the USC&GS.

236
NEW YORK 

Rochester, NY

GENERAL INFORMATION 

Operated by: 

Address:

McQuaid Jesuit High School

Odenbach Seismic Observatory 

McQuaid Jesuit High School 

1800 Clinton Avenue, South 

Rochester, NY 14618

Telephone: 716-473-1130 

Address to obtain records:

As above. 

SITE INFORMATION

Code

pnr

„. . . Latitude Station name , , ,. s (deg N.)Longitude 

(deg W.)

T! £QO^

Elev 

(meters)

ice;

Date 

opened

O / 1 1 /^Q

Date 

closed Foundation; geologic age

INSTRUMENTATION

Seismometer

Code

ROC

Type

& Watts 98093).

Component T (sec) 

o

0.75

1.0 

1.0

Galvo 

T (sec)

0.75

1.5 

6.3

Type Magnification „ . 

yv * Remarks recording at T

--do ------

--do —————

Timing system: 60-Hz line clock. 

System response curves: Uncalibrated. 

SHORT HISTORY

ROC was begun in 1959 on the initiative of several students and some faculty. It used two long-period Sprengnether 

seismometers until 1964 when the Benioff's, previously used by Harvard University, were loaned to the school.

The Observatory puts out periodic reports of observed disturbances and special reports of local disturbances, which 

contain observational data and an intensity map if possible.

237
NEW YORK 

Troy, NY

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Rensselaer Polytechnic Institute

Department of Geology 

Rensselaer Polytechnic Institute 

Troy, NY 12181

518-270-6476

Address to obtain records:

As above.

Records for six components (three 0.5-sec instruments and three 22.0-sec instruments) are 

available on photographic paper through 1966.

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

TRY Troy——————————————— 42.7311 73.6669 118 1960 Open-- Troy Shale of Ruedemann 1 (1944);

Cambrian.

1 Ruedemann, Rudolf, and Gushing, H. D., 1914, Geology of Saratoga Springs and vicinity: N.Y. State Mus. Bull. 169, 177 p.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

TRY Press-Ewing- 22.0 Helicorder 3 K Recorded on two recorders with different 

response curves.

Timing system: Tuning-fork clock timed with WWV hourly. 

System response curves: Available from station. 

SHORT HISTORY

TRY records on two recorders with two response curves, one with a lowered response at 7 sec to cut down on microseisms 

caused by storms in the Atlantic.

238
GENERAL INFORMATION

Operated by:

Address:

Woodward-Clyde Consultants 

for Consolidated Edison

Woodward-Clyde Consultants 

1425 Broad Street 

Clifton, NJ 07012

Telephone: 201-471-2000 

Telex: 13-3541 

Address to obtain records:

As above. 

SITE INFORMATION

NEW YORK 

Clifton, NJ

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(BLMY) Blum——————————————— 41.3297 73.9552

(CHRY) Calls Hollow Road————— 41.2082 74.0543

(DBMY) Dunderburg Mountain——— 41.2947 73.9750

(DPLY) Delli Paoli————————— 41.2528 73.9108

(GOBY) Gobbelet———————————— 41.3295 73.9218

(GSCY) Girl Scout Camp—————— 41.2663 74.0040

(OSBY) Osborn————————————— 41.3603 73.9240

(SNPY) Stoney Point————————— 41.2408 73.9713

(SPSY) St. Peter's School———— 41.3020 73.8907

(SRMY) Scherman———————————— 41.2283 74.0137

(STLY) Stiles————————————— 41.1887 74.0037

(WGLY) Wegel—————————————— 41.3588 73.8993

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

All stations Geospace HS-10————— Z 0.5

134

183

27

67

150

110

212

30

168

165

125

152

6/16/75 Open—

6/17/75 —do—

6/17/75 —do—

8/18/75 — do—

10/01/75 —do—

6/17/75 —do—

6/18/75 — do—

6/17/75 —do—

5/30/75 —do—

6/17/75 —do—

6/04/75 —do—

9/16/75 —do-­

Gneiss; Precambrian.

Do.

Do.

Norite; Ordovician. 

Gneiss; Precambrian.

Do.

Do.

Diorite; Ordovician. 

Gneiss; Precambrian.

Do.

Diabase; Triassic. 

Limestone; Devonian.

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

Magnetic tape Telemetered to Clifton. 

Three stations are also 

recorded visibly on 

drum recorders.

Timing system: Sprengnether TS-250 chronometer used for visible recorders. IRIC-C used with tape recorders. WWV checked daily. 

System response curves: See figure 9, p. 366. 

SHORT HISTORY

All stations are part of the Indian Point Seismic Monitoring Network and were installed to determine seismic activity 

near a powerplant site. Operation of the Network was assumed by Woodward Clyde in early 1977 for Consolidated Edison.

239
NEW YORK 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(DH-NY) Delhi ———————— -

(DP-NY) Deposit ——————— -

. ————— 42.2442 74.8883 652 10/28/61 

5/31/66

. ————— 42.0883 75.4522 579 7/07/62

11/15/65 Sandstone; Paleozoic. 

6/03/66

7/17/62

INSTRUMENTATION

Seismometer

Code Type Component

(DH-NY): Benioff ——————— Z,NS,EW 

Sprengnether- —— Z,NS,EW 

(DH-NY) (2d oper.): Geotech S-13 ——— Z,NS,EW

(DP-NY): Benioff ——————— Z,NS,EW

To (sec)

1.0 

20.0

1.0 

20.0

1.0

Galvo Type Magnification D , TM r ^ j- ^ r,, Remarks T (sec) recording at T

Magnetic tape, (DH-NY): 60 K 

35-mm film, 

--do —— —— ——

--- Magnetic tape --- Portable system.

Magnetic tape, (DP-NY): 90 K 

35-mm film.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

240
NORTH CAROLINA 

Chapel Hill, NC

GENERAL INFORMATION 

Operated by: 

Address:

University of North Carolina

MacCarthy Geophysics Laboratory 

Department of Geology 

University of North Carolina 

Chapel Hill, NC 27514

Telephone: 919-933-1212 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

CEH Chapel 

CHC Chapel

Hill — — — — —

Hill --------

Latitude 

(deg N.)

Longitude 

(deg W.)

79.0928 

79.0506

Elev 

(meters)

152 

149

Date 

opened

8/75 

1953

Date 

closed

Open-- 

12/70

Foundation; geologic age

Bouldery saprolite; late Precambrian.

INSTRUMENTATION

Code

PFH

Seismometer

Type Component T (sec)

r,o/\*ar*h i fi^nA___--___ 7 KG FL; i r\

Galvo

Tg (sec)

Type

recording

Magnification

at T 

o

i =; v

CHC Benioff 1051,1101——— Z,NS,EW 1.0 Photographic 25 K

University.

Timing system: Geotech TG-110.

System response curves: Available from station.

SHORT HISTORY

CHC operated on campus from 1953 to 1970. The station was inoperative from 1971 to August 1975 when it was reestablished as 

CEH at a new site 5 km from campus. Signals are telemetered via p"hone lines to the department for visual display.

A compilation of recorded events is available from the Division of Mineral Resources, P.O. Box 27687, Raleigh, NC 27611. 

Request: "A Catalogue of Seismic Events Recorded at Seismograph Station CHC, Chapel Hill, NC, January 1, 1955 to December 31, 

1970," North Carolina Geol. and Mineral Resources Section Spec. Publ. 6, 72 p.

241
GENERAL INFORMATION 

Operated by: 

Address:

Carolina Power and Light Company

Carolina Power and Light Company

First Union National Bank Building, Rm. 411

Wilmington, NC 28401

Telephone: 919-836-6146 

Address to obtain records:

Charles K. Ross

c/o Carolina Power and Light Company

P.O. Box 1551

Raleigh, NC 27602

SITE INFORMATION

NORTH CAROLINA 

Wilmington, NC

Code

uwr

„. . . Latitude % Station name , , „ , (deg N.)

Longitude 

(deg W.)

78 O/.A1

Elev 

(meters)

on

Date 

opened

c; ie\i /7A

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

Remarks

WNC Geotech RF-400- 1.0 16 Hz Develocorder 100 K

Timing system: Geotech TG-210.

System response curve: Available from station.

SHORT HISTORY

WNC is one of seven stations located in a circular array having a diameter of 72 km. WNC is the only one that reports 

data for teleseisms.

242
NORTH CAROLINA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code „. . Station name

Latitude 

, , „ -. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

Albemarle- 80. 183 12/16/66 12/20/66 

1/19/68 1/19/68

INSTRUMENTATION

Seismometer

Code

(AE-NC)

Type

Geotech S-13 ——

Component

Z,NS,EW 

Z,NS,EW

To (sec)

1.0 

20.0

Galvo Type Magnification 

T (sec) recording at T

Magnetic tape ——

--do — —— — —

Remarks

Portable system. 

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

243
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Department of the Navy

Office of Naval Research 

U.S. Department of the Navy 

Washington, DC 20375

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

NORTH CAROLINA 

Washington, DC

Code „. . . Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

Cherry Poir t.9000 76.8833 1/50

INSTRUMENTATION

Code

Seismometer

Type Component T (sec)

1.0-2.0

6.0-10.0

Galvo Type Magnification Remarks

T (sec) recording at T

--do —————

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

This station was part of a network of stations, which were mostly in Florida, run by the U.S. Navy to track hurricanes by 

monitoring microseisms.

244
NORTH DAKOTA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(HH-ND) Hannah — — — — -------

(HH2ND) --do ---------------

(RY-ND) Ryder ---------------

(TS-ND) Trotters -----------

Latitude 

(deg N.)

—— 48.9481

—— 48.9442

—— 48.0972

—— 47.1069

Longitude 

(deg W.)

98.6925 

98.6822 

101.4944

103.6731

Elev 

(meters)

488 

488 

640

816

Date 

opened

7/22/63 

5/23/66

7/22/63 

5/23/66

10/02/64

_ a e . Foundation: geologic age closed

8/05/64 Shale. 

6/03/66

3/22/65 Glacial drift. 

6/03/66

5/14/65

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(HH-ND), (RY-ND): Benioff ——————— Z,NS,EW 1.0 

Sprengnether---- Z,NS,EW 20.0

(HH2ND), (RY-ND) 

(2d oper.): Geotech S-13 ——— Z,NS,EW 1.0

(TS-ND): Benioff ——————— Z,NS,EW 1.0

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape, (HH-ND): 60 K 

35-mm film. (RY-ND): 60 K 

--do —— —— —

--- Magnetic tape --- Portable system.

35-mm film.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

245
GENERAL INFORMATION 

Operated by: 

Address:

Bowling Green State University

Seismological Observatory 

Department of Geology 

Bowling Green State University 

Bowling Green, OH 43403

Telephone: 419-372-2531 

Address to obtain records:

As above. 

SITE INFORMATION

OHIO

Bowling Green, OH

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BGO Bowling Green ———————— 41.3781 83.6592 212 9/63 Open-- Dolostone; Silurian.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

BGO Geotech S-13- Z,NS,EW 1.0 0.75 Photo paper 30 K

Timing system: Sprengnether TS-100. 

System response curves: Not available. 

SHORT HISTORY

BGO started with the installation of one short-period seismometer in 1963.

246
OHIO 

Cincinnati, OH

GENERAL INFORMATION 

Operated by: 

Address:

Xavier University

Seismological Observatory 

Xavier University 

Victory Parkway 

Cincinnati, OH 45207

Telephone: 513-731-2341 

Address to obtain records:

As above. 

SITE INFORMATION

Code

f KPJ

MT T?

Station name

Milford —— —— —— —— —

Latitude 

(deg N.)

—— 39.1450

Longitude 

(deg W.)

84.4967

84.2774

Elev 

(meters)

203

Date 

opened

1927

1963

Date 

closed

1963

Foundation; geologic age

INSTRUMENTATION

Code

CNN

Seismometer

Type Component

Benioff —————————— Z,NS,EW

To (sec)

Short

1.0

Galvo Type Magnification n .

T (sec) recording at T

--do —————

Timing system: Sprengnether crystal clock checked daily with WWV. 

System response curves: Uncalibrated. 

SHORT HISTORY

CNN was established by St. Xavier College (now Xavier University) in 1927.

247
OHIO 

Cleveland, OH

GENERAL INFORMATION 

Operated by: 

Address:

John Carroll University

Seismological Observatory 

John Carroll University 

Cleveland, OH 44118

Telephone: 216-491-4361 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

CLE Cleveland — —— — —— —

Latitude 

(deg N.)

—— 41.4888

Longitude 

(deg W.)

Elev 

(meters)

o o C

Date 

opened

1904

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code

CLE

Type

--do ——————— -

--do ——————— -

Seismometer

Component To (sec)

1.0 

1.4 

1.5 

18.0

Galvo 

Tg (sec)

6.0 

1.3 

1.5 

18.0

Type 

recording

Photo paper 

--do — — —— 

--do — — —— 

--do —— —— -

Magnification 

at T

0

9.6 K 

1250 

1800 

2.2 K

Remarks

Magnification at 1.3 

Magnification at 1.0 

Magnification at 12

sec. 

sec. 

sec.

Timing system: Sprengnether TS 250 digital timing system. 

System response curves: Available from station. 

SHORT HISTORY

CLE was formally inaugurated in 1904 after several years of informal experimentation that began in 1900. In 1908, the 

Jesuit Seismological Service was organized and 16 stations began operating in the United States. Several instruments, in 

addition to those mentioned above, are run experimentally at this site. The station publishes an annual station bulletin.

248
OHIO

Ann Arbor, MI

GENERAL INFORMATION 

Operated by: 

Address:

University of Michigan

Seismological Observatory 

Department of Geology and Mineralogy 

University of Michigan 

Ann Arbor, MI 48104

Telephone: 313-763-3438 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

(AN2) Anna ——————————— •

(AN3) Anna ——————————— -

(AN5) Anna ——————————— •

(AN6) Anna ——————————— •

INSTRUMENTATION

Code Type

Latitude Longitude 

(deg N.) (deg W.)

- —— 40.4314 84.1236

- —— 40.8556 83.7311

- —— 40.5486 83.8122

- —— 40.2219 83.8978

- —— 40.1061 84.1531 

- —— 40.6369 84.4322

Seismometer

Component T (sec)

- ———— Z 1.0

Elev Date Date 

(meters) opened closed

323 1/15/76 Open— 

277 8/01/76 — do— 

326 9/01/76 --do— 

346 9/01/76 —do—

331 8/01/76 — do— 

254 9/01/76 — do—

Galvo Type

T (sec) recording

--- Pen and ink

Foundation; geologic age

Glacial till; Quaternary. 

Do. 

Do. 

Do. 

Do. 

Do.

Magnification _ , 6 Remarks

at 1 

O

Timing system: Geotech TG-120.

System response curves: See figure 2, p. 363.

SHORT HISTORY

These stations make up the Anna, Ohio, array. The array was established in order to monitor the seismicity in the vicinity 

of this relatively active area. Funding has been provided, in part, by the Nuclear Regulatory Commission.

249
GENERAL INFORMATION 

Operated by: 

Address:

OHIO 

Garland, TX

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(GZ-OH) Galion- 40.6600 82.7833 372 8/23/69 10/10/69

INSTRUMENTATION

Seismometer

Code

(GZ-OH) :

Type

Geotech S-13 ——

Component

Z,NS,EW 

Z,NS,EW

To (sec)

1.0 

20.0

Galvo Type Magnification Remarks 

T (sec) recording at T

--- Magnetic tape --- Portable system.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

250
OKLAHOMA 

McAlester, OK

GENERAL INFORMATION 

Operated by: 

Address:

Air Force Technical Application Center

Wichita Mountains Seismological Observatory-Closed

McAlester, OK

(Obsolete)

Address to obtain records:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

r , _. . . Latitude Longitude Code Station name ... ,., /-j t , \ (deg N.) (deg W.)

WMO Wichita Mountain —————— 34.7181 98.5891

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Elev Date Date _ , . . , / .. i , -, , Foundation; geologic age (meters) opened closed

505 —— Closed

Galvo Type Magnification Remarks

T (sec) recording at T

magnetic tape. in an array.

Timing system: Geotech TG-110.

System response curve: Available with records.

SHORT HISTORY

WMO was set up by AFTAC as one of five special-purpose arrays. The others were BMO, CPO, TFO, and UBO.

251
GENERAL INFORMATION 

Operated by: 

Address:

University of Oklahoma

Earth Sciences Observatory 

University of Oklahoma 

P.O. Box 5 

Leonard, OK 74043

Telephone: 918-366-4152 

Address to obtain records:

As above.

SITE INFORMATION

OKLAHOMA 

Norman, OK

TUL records since January 1971:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code Station name

Latitude Longitude Kiev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

CRO Carnasaw Mountain---—— 34.1499 

Lookout Tower.

MZO Mazie Landing———————— 36.1316

NMO Norman—————————————— 35.2056

OLO Oologah————————————— 36.4573

RLO Rose Lookout Tower——--- 36.1672

TUL Tulsa—————————————— 35.9106

WLO Wilson————————————— 34.0648

INSTRUMENTATION

_____________Seismometer_____ 

Code Type Component

CRO Geotech S-13 ———— —— Z 

MZO Geotech S-13——————— Z

NMO Modified JohnsonMatheson----------- Z

OLO Geotech s-13--------- Z

94.5556 302 5/17/77 Open-- Bigfork Chert; Middle Ordovician.

95.3001 182 9/16/76 —do— Weathered limestone, Boone Formation;

	Mississippian.

97.4440 354 mid 75 mid 76

95.7108 196 11/28/76 Open-- Oologah Limestone; Middle Pennsylvanian.

95.0261 384 5/77 --do-- Boone Foundation; Mississippian.

95.7925 261 7/61 --do— Sandstone; Pennsylvanian.

97.3697 284 4/25/77 --do-- Alluvium; Quaternary.

T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

RLO -do1.3

1.3

2.5 

1.3

1.3

Pen and ink 32 K

16 K

Helicorder 

Pen and ink 16 K

Magnification at 1 sec. 

High-pass. Magnification 280 K at 10 Hz.

Magnification at 1 sec. 

High-pass. Magnification 140 K at 10 Hz.

Magnification at 1 sec. 

High-pass. Magnification 140 K at 10 Hz.

252
INSTRUMENTATION—Continued

OKLAHOMA—Continued 

Norman, OK

Code Type

—do —————————

--do —————————

--do —————————

_. do —————————

_- do ——————————————

Seismometer

Component

—— Z

—— Z

—— Z

T 

o

1 

1

1

1

20 

20 

20

(sec)

.0 

.0

.0 

.0

.0 

.0 

.0

Galvo 

Tg (sec)

0.75 

High-pass

1-Hz 

bandpass . 

16-Hz

bandpass . 

100.0

Low-pass

Type 

recording

Photo paper 

Visible, 

16-ram film 

Helicorder, 

16-ram film. 

Helicorder

Photo paper 

16-ram film 

Helicorder, 

16-mm film.

Magnification

at T 

o

100 K 

35.6 K, 

100 K, 10 K 

200 K

2000 K

5 K 

200, 20, 2 

34 K, 53.6 K, 

5.36 K, 536

Remarks

Three instruments.

Magnification at 

16 Hz.

Ten instruments. 

High-gain.

WLO Geotech S-13- 1.3 Pen and ink 16 K Magnification at 1 sec. 

High-pass. Magnification 140 K at 10 Hz.

Timing system: Most stations use a Sprengnether MEQ-800B crystal clock with WWV recorded at the beginning of each record. 

NMO used the 60-Hz powerline corrected by WWV (not to within 1 sec). TUL has a digital system using a 

quartz crystal contained in a proportional oven.

System response curves: Available from station. 

SHORT HISTORY

TUL was established in 1961 by Jersey Production Research Company as a broadly based geophysical observatory. In April 

1965, the complete facility and its record archives were was given to the University of Oklahoma by Humble Oil Company. Since 

December 1961, three short-period and three long-period photo-paper seismograms have been recorded. From 1970 to the present, the 

seismometers have been modified and 17 other seismic recording systems have been added.

NMO was located on the campus in Norman. The timing system was imprecise and the records are currently misplaced. 

A new array of 11 short-period vertical seismographs is being installed throughout the State. RLO and two new stations will 

be telemetered to TUL. MZO, OLO, WLO, CRO, and four new stations will be operated by volunteers who will mail all records to 

TUL.

The new array, of which all the stations listed above except TUL are a part, will eventually contain 11 short-period 

vertical instruments.

253
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Senturion Sciences, Inc.

Senturion Sciences, Inc. 

P.O. Box 15447 

Tulsa, OK 74115

Not available.

OKLAHOMA 

Tulsa, OK

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

ISO Tulsa—————————————— 36.1482 95.8979 210 2/73 4/i9/74 Alluvium overlying terrace 

deposits; Quaternary.

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

ISO Hall-Sears- 0.5 Helicorder Intermittent operation.

Timing system: 60 Hz measured from power signal, with WWV superimposed at beginning and end of record. 

Timing considered imprecise.

System response curve: Not available. 

SHORT HISTORY

TSO was located in downtown Tulsa outside the offices of Senturion Sciences. The site was noisy and only a few large 

teleseisms were recorded.

254
OKLAHOMA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(AK-OK) 

(AL-OK) 

(AM-OK) 

(AP-OK)

(CT-OK) 

(DU-OK) 

(HB-OK) 

(TO-OK)

(WA-OK)

Station name

Latitude Longitude 

(deg N.) (deg W.)

- —— 34.3683 96.0572

- —— 34.3581 95.6125 

- —— 34.0478 97.4114

- —— 34.4881 95.1272 

- —— 34.0364 96.2178

- —— 35.1764 98.9103

- —— 34.3564 96.5681

Elev Date Date 

(meters) opened closed

183 6/17/62 6/28/62 

213 7/04/62 7/11/62 

274 12/08/61 12/20/61

427 9/25/63 12/31/63 

5/05/65 9/19/65 

12/09/65 1/13/66

305 7/14/62 10/05/62 

198 8/14/63 3/09/64 

491 11/09/61 4/10/63

259 11/20/61 12/18/61 

5/09/62 6/09/62

305 10/17/62 10/27/62

Foundation; geologic age

Alluvium and limestone.

Do. 

Clay. 

Clay and limestone; Paleozoic.

Do.

INSTRUMENTATION

Code

(AK-OK) , 

(AP-OK) 

3d oper. 

(HB-OK) , 

(WA-OK) :

Type

(AL-OK) , 

(2d and 

), (CT-OK), 

(TO-OK) ,

Seismometer

Component T (sec)

• ———— Z,NS,EW 1.0

Galvo Type

T (sec) recording

--- Magnetic tape, 

35-mm film.

Magnification _ . T Remarks at i

0

(AK-OK): 150 K 

(AL-OK): 290 K 

(CT-OK): 200 K 

(HB-OK): 85 K

(TO-OK): 290 K

255
INSTRUMENTATION—Continued

OKLAHOMA—Continued 

Garland, TX

Seismometer

Code Type Component T (sec)

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

(AM-OK), (AP-OK)

(1st oper.),

(DU-OK): Benioff- Z.NS.EW 1.0 -doSprengnether—— Z.NS.EW 20.0 -do-(AM-OK): 100 K

(AP-OK): 350 K

(DU-OK): 160 K

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 363. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

256
GENERAL INFORMATION 

Operated by: 

Address:

OREGON 

Ashland, OR

Southern Oregon State College

Geology Department 

Southern Oregon State College 

1250 Siskiyou Blvd. 

Ashland, OR 97520

Telephone: 503-482-6477 

Address to obtain records:

As above.

None usable as yet. 

SITE INFORMATION

Code „ . . . Latitude Station name , , „ .. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

Ashland- 42.2 122.7 3/22/73 Open-- Granodiorite; Late Jurassic.

INSTRUMENTATION

Seismometer

Code Type Component T(sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

(ALO) 1.0 Helicorder 10-20 K

Timing system: Sprengnether TS-100 clock checked with WWV. 

System response curve: Not available. 

SHORT HISTORY

ALO was started by the late Dean Carder upon retirement from Government service in the field of seismology. Dr. Carder 

died before the station was operational, and the lack of expertise has delayed completion of the station. It is hoped it will 

be a contributing station by the end of 1977; the station is currently acquiring data which is troubled by noise that has not 

yet been correlated with any known disturbance.

257
OREGON 

Baker, OR

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

Baker Observatory—Closed 

U.S. Geological Survey 

Baker, OR 97814 

(Obsolete)

Address to obtain records:

1962-1966:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

1966-1975:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

SITE INFORMATION

Code

pMn

„, , . Latitude Station name , , VT x (deg N.)Longitude 

(deg W.)

1 1 "7 1f\C.£.

Kiev 

(meters)

1 1 BO

Date 

opened

1 OAO

Date 

closed

£ /i o /•?<;

Foundation; geologic age

INSTRUMENTATION

Seismometer

Code Type

Benioff 1051 ——————

Johnson-Ma theson 7515

Geotech 7505A, 8700AMelton 10012 ——————

Component

Z

Z

NS,EW

Z,NS,EW

NS,EW 

Z

To (sec)

1.25

1.0

1.25

20.0

2.5 

2.42

Galvo 

T (sec) 

g

0.33

.065

.33

110.0

.64 

.64

Type 

recording

Helicorder

Develocorder

--do ——————

--do ——————

__ do ——————

— do ——————

Magnification

at T 

o

700 K

25 K

360 K

8.5 K,

3.2 K, 4 K

Remarks

Sixteen instruments in 

an array. Magnification 

Located 

farm.

Do.

Do.

Do. 

Do.

at 1 sec. 

at the tank

Timing system: Geotech 11880.

System response curves: Available with records.

SHORT HISTORY

BMO was an array, originally of 10 stations all situated within a 2.5-km radius, set up by AFTAC. The station was turned 

over to the USGS in 1966. Originally, the "tank farm" location had a total of nine instruments run at different gains and 

having different periods.

258
GENERAL INFORMATION 

Operated by: 

Address:

Oregon State University

Seismic Station 

School of Oceanography 

Oregon State University 

Corvallis, OR 97331

Telephone: 503-754-2912 

Address to obtain records:

As above.

COR records until 1962:

Seismograph Station 

University of California 

Berkeley, CA 94720

SITE INFORMATION

OREGON 

Corvallis, OR

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code

COR 

KFO

Station name

Latitude 

(deg N.)

—— 44.5857

—— 42.2667

Longitude 

(deg W.)

123.3032 

121.7450

Elev 

(meters)

121 

1439

Date 

opened

12/50 

1962

Date 

closed

Open-- 

— do-­

Foundation; geologic age

Basaltic deposits; Quaternary.

INSTRUMENTATION

Code

COR 

KFO

Type

Benioff 1051,

Seismometer

Component

1101 —— Z,NS,EW

T (sec)

1.0 

15.0

1.0

Galvo 

T (sec)

0.75 

100.0

Type 

recording

Photo paper 

--do —————

Helicorder

Magnification

at T 

o

25 K 

1.5 K

15 K

Remarks

WWSSN. Magnification 

12.5 K in winter. 

WWSSN. Magnification 

750 in winter.

Timing system: WWSSN Model 8684 Geotech.

System response curves: COR—see figure 1, p. 363. KFO available from station.

SHORT HISTORY

The first seismometer operating at the University was installed in 1944. It was a custom-made instrument located in the

Physics Building. In 1950 the site was moved to its present location and was equipped with a three-component Schlicter, 1.0-sec

system and a Wilson-Lamison 1.0-sec vertical seismometer. In August 1962 the WWSSN equipment was installed.

259
GENERAL INFORMATION 

Operated by: 

Address:

University of Oregon

Seismic Station 

Department of Geology 

University of Oregon 

Eugene, OR 97403

Telephone: 503-686-4573 

Address to obtain records:

As above. 

SITE INFORMATION

OREGON 

Eugene, OR

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

PMT Pine Mountain- 43.7909 120.9449 1924 9/22/69 Open- Volcanic rock; Tertiary.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

PMT Geotech S-13- Z,NS,EW 1.0 Helicorder 60 K

Timing system: Geotech TG-110 (will be replaced owing to malfunction). 

System response curve: Available from station. 

SHORT HISTORY

PMT operated for about a year with six components, then another year with only the vertical component of the short-period 

instrument. From 1972 to late 1976, the station was inactive. The station is again functioning, currently with only the 

short-period vertical component.

260
GENERAL INFORMATION 

Operated by: 

Address:

Oregon Museum of Science and Industry

Oregon Museum of Science and Industry 

4015 S.W. Canyon Road 

Portland, OR 97221

Telephone: 503-248-5900 

Address to obtain records:

Oregon State University 

Seismic Station 

School of Oceanography 

Corvallis, OR 97331

SITE INFORMATION

OREGON 

Portland, OR

Code

PTT1

„. . . Latitude Station name ,., „ , (deg N.)

P/^vH or>rl------- ________ AC CnQI

Longitude 

(deg W.)

1OO 7 1 (. 1:

Elev 

(meters)

one

Date 

opened

c if.r.

Date 

closed Foundation; geologic age

Miocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

PTD Wilson-Lamison- 1.0 1.5 Visible 8 K

Timing system: Pendulum clock, checked each day against WWV. 

System response curve: Not available. 

SHORT HISTORY

PTD is chiefly run for display purposes. The equipment is on loan from the USGS, Albuquerque.

261
OREGON 

Portland, OR

GENERAL INFORMATION 

Operated by: 

Address:

Harold Mason

Harold Mason

c/o Portland State University

Earth Science Department

Box 751

Portland, OR 97207

Telephone: 503-299-3022 

Address to obtain records:

Earth Science Department 

Portland State University 

Box 751 

Portland, OR 97207

SITE INFORMATION

Code

HMD

„. . . Latitude Station name ,, „ , (deg N.)

H Moc-^r,---------------- /,R RT81

Longitude 

(deg W.)

i oo ";7i o

Elev 

(meters)

£./,

Date 

opened

1 Q7R

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code

HMD

Seismometer

Type Component T (sec)

Galvo

T (sec)

Type

recording

Magnification

at T 

o

Timing system: 60-Hz line timer checked with WWV twice daily. 

System response curves: Not available. 

SHORT HISTORY

HMO was established as an avocation of the owner and operator, Mr. Harold Mason.

262
OREGON 

Berkeley, CA

GENERAL INFORMATION 

Operated by:

Address:

Tera Corporation for

Portland General Electric Company

Tera Corporation 

2118 Milvia Street 

Berkeley, CA 94704

Telephone: 415-845-5200 

Address to obtain records:

Stuart W. Smith 

Geophysics Program 

202 ATG Building, AK-50 

University of Washington 

Seattle, WA 98195

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

305

Date 

opened

11/75

Date 

closed Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

FMC Mark L-4C- 1.0 Helicorder Variable Gain adjusted seasonally.

Telemetered to 

Arlington, OR.

Timing system: Sprengnether clock checked with WWVB daily.

System response curve: Curve is slightly different from standard Mark L-4C microseismic system (fig. 2); peaks at 5 Hz.

SHORT HISTORY

This station is part of a three-station array in this area, where there are no other instruments and the seismicity is low. 

Portland General is interested in being able to precisely locate occasional earthquakes when they do occur.

263
OREGON 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(PK-OR) 

(PT-OR) 

(SR-OR) 

(UK-OR) 

(VT-OR)

Station name

Latitude 

(deg N.)

—— 45.3175 

—— 45.6111

—— 44.9403

—— 45.0931

Longitude 

(deg W.)

118.9092 

118.8839 

117.4278 

118.8986 

118.4147

Elev 

(meters)

1036 

411 

1341 

1311 

1341

Date 

opened

6/06/62 

1/26/62 

3/19/63 

2/08/63 

1/16/62

_ , Foundation; geologic age

6/28/62 

7/29/63 Basalt. 

6/03/63 Basalt and granite. 

3/01/63 

5/21/62 Granite.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

(PK-OR), (SR-OR),

(UK-OR), (VT-OR): Benioff-

(PT-OR):

Z,NS,EW 1.0

Benioff-- — ———— Z,NS,EW 1.0 

Sprengnether---- Z,NS,EW 20.0

Magnetic tape, (PK-OR): 190 K

35-mm film. (SR-OR): 180 K

(VT-OR): 330 K

—— do——————— (PT-OR): 200 K

—— do--------

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 3b4. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

264
GENERAL INFORMATION 

Operated by: 

Address:

University of Washington

Geophysics Program 

202 ATG Building, AK-50 

University of Washington 

Seattle, WA 98195

Telephone: 206-543-7010 

Address to obtain records:

As above. 

SITE INFORMATION

OREGON 

Seattle, WA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

HRO 

MFW 

PNO

Hermiston--------

Milton-FreewaterPendleton--------

45.8357 119.3808 172

45.9030 118.4058 384

45.6120 118.7629 402

6/75 Open--

10/71 --do--

6/75 --do--

Volcanics; Miocene. 

Alluvium; Quaternary. 

Volcanics; Miocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

All stations Mark L-4C- 1.0 16 Hz 16-mm film 100-200 K Telemetered to the University.

Timing system: Astrodata Time Code Generator and WWVB. 

System response curves: See figure 11, p. 366. 

SHORT HISTORY

MFW used to belong to the Hanford array run by the USGS. The University took over its operation in June 1975. 

The University publishes a bimonthly hypocenter-location bulletin.

265
GENERAL INFORMATION 

Operated by: 

Address:

Panama Canal Company

Panama Canal Company

280 Administration Building

Balboa Heights, CZ

Address to obtain records:

Before 1962: 

As above.

SITE INFORMATION

PANAMA CANAL ZONE 

Balboa Heights, CZ

WWSSN records (since 1962):

National Geophysical and Solar-Terrestrial

Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code „ . Latitude Station name , , „ ,. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

RHP Tt^lKr,!. Ho,' oVil-c___-----__ Q QAflQ 7Q RRQ1 If. IQIi T/77 Vnl r-a ni r-c • Ter-tiar-w

INSTRUMENTATION

Seismometer

Code

BHP

Type Component

tt j nj , cw

To (sec)

1.0 

15.0

Galvo

T (sec) 

8

0.75 

100.0

Type Magnification 

recording at T

Photo paper

—— do -----

12.4 K 

740

Remarks

WWSSN. 

Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

BHP's original equipment consisted of two Bosch-Omori's; these were replaced in 1931 with two Wood-Anderson instruments. 

In January 1962 the WWSSN system was installed.

266
PENNSYLVANIA 

Kutztown, PA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Kutztown State College

Physical Science Department 

Kutztown State College 

Kutztown, PA 19530

215-683-3511 ext. 368

Code Station name

KTZ Kutztown ———————— •

INSTRUMENTATION

Code Type

KTZ Geotech ————— -

Latitude Longitude Elev Date Date _ , . . , /•j »T \ /-JIT-. r \ j i j Foundation: geologic age (deg N.) (deg W. ) (meters) opened closed 6

- —— 40.5117 75.7800 148 10/67 Open-- Shaly limestone; Ordovician.

Seismometer Galvo Type Magnification _ .

Component T (sec) T (sec) recording at T

- ———— Z,NS,EW 1.0 —— Helicorder 4 K

- ———— Z,NS,EW 20.0 —— —— do ——— 2 K

Timing system: WWV recorded directly on records. 

System response curves: Not available.

267
PENNSYLVANIA 

Millersville, PA

GENERAL INFORMATION 

Operated by: 

Address:

Millersville State College

Department of Earth Sciences 

Roddy Science Center 

Millersville State College 

Millersville, PA 17551

Telephone: 717-872-5411 ext. 726 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

(MVL) Millersville ————— -

INSTRUMENTATION

Code Type

(MVL) Mark L4-C ——— -

Latitude Longitude Elev Date Date „ , . . , . 

,, XT , /-j „ > , *. \ A i A Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

• —— 39.9917 76.3667 91 10/23/74 Open-- Phyllitic marble; Ordovician.

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

Timing system: Sprengnether TS-300 digital clock checked daily with WWV, 

System response curve: Uncalibrated. 

SHORT HISTORY

(MVL) operated in a temporary location in the basement of the building until March 1975. It then was located at a 

permanent site on bedrock. The station is intended to be part of a Pennsylvania-New Jersey-Maryland-Delaware network under 

the supervision of Pennsylvania State University.

268
PENNSYLVANIA

New Kensington, PA

GENERAL INFORMATION 

Operated by: 

Address:

Fred A. Keller

Fred Keller

508 Pershing Drive

New Kensington, PA 15068

(Obsolete)

Address to obtain records:

Unknown. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date _ , . , 

,, „ , /-j ,, •, i 4. ^ -, i j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

- —— 40.5597 79.7542 251 1939 1959 Red shale; Pennsylvanian.

Seismometer Galvo Type Magnification _ . ^

Component T (sec) T (sec) recording at T

. ———— N 15 ° w 10 .o 12.0 Smoked paper 500

Timing system: Seth Thomas pendulum clock checked with WWV. 

System response curve: Not available. 

SHORT HISTORY

NKP was the avocation of the owner and operator. He developed his own seismograph system which he described in various 

papers, one of which was in the "Seismological Observatory Bulletin" of the University of Pittsburgh, 1942.

269
GENERAL INFORMATION 

Operated by: 

Address:

The Franklin Institute

The Fels Planetarium 

The Franklin Institute 

Philadelphia, PA 19103

Telephone: 215-448-1000 

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

PENNSYLVANIA 

Philadelphia, PA

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

PHI Philadelphia- 39.9589 75.1750 7/34 8/28/71 Solid rock.

INSTRUMENTATION

Code Type

Seismometer

Component To (sec)

Galvo 

Tg (sec)

Type 

recording

Magnification Remarks 

o

PHI Wenner- NS,EW 9.0 4.9 Photo paper, 1400 

pen and ink.

Timing system: Pendulum clock checked daily with Dominion Observatory. 

System response curve: Not available. 

SHORT HISTORY

The station was established for the dual purpose of being a display item as well as a scientifically useful installation. 

At one point it housed a McComb-Romberg two-component horizontal system in addition to the Wenner.

270
PENNSYLVANIA 

Pittsburgh, PA

GENERAL INFORMATION 

Operated by: 

Address:

University of Pittsburgh

Department of Earth and Planetary Sciences 

University of Pittsburgh 

Pittsburgh, PA 15260

Telephone: 412-624-4700 

Address to obtain records:

Unknown. 

SITE INFORMATION

Code Station name

PIT Pittsburgh —— — —— ——

INSTRUMENTATION

Code Type

PIT Wenner — — —— ——

Benioff — — —— —

Latitude Longitude 

(deg N.) (deg W.)

—— 40.4450 79.9533

Seismometer

Component T (sec)

——— N30°W,N60°E 12.3

Elev Date Date _ , . . , . 

, -. , Foundation; geologic age (meters.) opened closed

273 1929 1/62 Birmingham Shale Member of Conemaugh 

Formation; Late Pennsylvanian.

Galvo Type Magnification RPma rk<i

T (sec) recording at T

15 Photo paper 200 —— 

—— do ———— 24 K

—— do ————

Timing system: Astronomical clock. 

System response curve: Not available. 

SHORT HISTORY

PIT was considered an excellent station, although it experienced interference from street cars. The station published 

annual reports of seismic activity recorded at the station.

271
PENNSYLVANIA 

University Park, PA

GENERAI INFORMATION 

Operated by: 

Address:

Pennsylvania State University

Geophysical Laboratory 

Pennsylvania State University 

204 Mineral Science Building 

University Park, PA 16802

Telephone: 814-865-2622 

Address to obtain records:

As above. 

SITE INFORMATION

Code

(ABC) 

(BVR) 

(ERP) 

SCP

Station name

State College ----- ——

Latitude 

(deg N.)

—— 40.1167

—— 40.7000 

—— 42.1333

—— 40.7950

Longitude 

(deg W.)

75.1333 

80.3333 

79.9833 

77.8650

Elev Date 

(meters) opened

1975 

1975 

1975

1935

Foundation; geologic age

Open — 

— do--

--do-- 

--do--

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

(ABC), (BVR),

(ERP): Hall-Sears 10-

SCP: Benioff------

SprengnetherZ,NS,EW Z,NS,EW

1.0

1.0 

15.0

--- Pen and ink

.75 Photo paper

100.0 ——do------

WWSSN. 

Do.

Timing system: SCP uses the standard WWSSN system. 

System response curves: Not available. 

SHORT HISTORY

SCP operated from 1935 to 1945 using horizontal Bosch-Omori instruments (T = 6 sec). From 1945 to 1951 the station employed horizontal Galitzin-type instruments with a period of 10 sec. A shorter period vertical instrument began operating in 

1948. In 1952 the station had three components operating fairly consistently; the horizontal instruments had periods of about 

17 sec and a vertical instrument had a period of about 3 sec. In January 1962 the WWSSN equipment was installed. The records 

before the WWSSN installation were on photo paper and are archived at the University.

(ABC), (BVR), and (ERP) are located on the outlying campuses of the University. They will eventually be telemetered to 

SCP and recorded on Develocorder film.

272
GENERAL INFORMATION

Operated by:

Address:

Waynesburg College for Lamont-Doherty Geological Observatory, 

Columbia University

Department of Geology 

Waynesburg College 

Waynesburg, PA 15370

Address to obtain records:

Department of Seismology 

Lamont-Doherty Geological Observatory 

Palisades, NY 10964

PENNSYLVANIA 

Waynesburg, PA

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

WAY Waynesburg- 39.9017 80.1850 329 6/56 1964 Shaly sandstone, thin limestone and 

bituminous coal; Early Permian.

INSTRUMENTATION

Code

WAY

Seismometer

Type Component

Custom, Lamont-type-- NS,EW

To (sec)

15.0 

15.0

Galvo 

Tg (sec)

75.0 

75.0

Type Magnification Remarks 

recording at T

Photo paper — - ——

—do —————

Timing system: Pendulum clock checked with WWV daily. 

System response curve: Not available. 

SHORT HISTORY

This station was installed as part of a study of long-period waves undertaken by Columbia University.

273
GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

PENNSYLVANIA 

Garland, TX

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(AS-PA) Altoona————————————— 40.7331 78.5239

(BB-PA) Bloomsburg—————————— 41.1822 76.5519

(BD-PA) Bedford————————————— 40.1333 78.5078

(BR-PA) Berlin————————————— 39.9242 78.8447

(BV-PA) Belleview——————————— 40.6844 77.6233

(GT-PA) Galeton————————————— 41.6317 77.8111

(HD-PA) Howard————————————— 40.9956 77.5956

(LT-PA) Lewistown——————————— 40.3392 78.0667

(MR-PA) Middleburg—————————— 40.8147 77.1756

(MS-PA) Montrose———————————— 41.7611 75.7975

(PJ-PA) Pottstown——————————— 40.2828 75.5836

(SH-PA) Shamokin- —— ——————— - 41.0136 76.9136

(TU-PA) Tunkhannock---——————-- 41.5714 76.1367

INSTRUMENTATION

__________Seismometer_____________

Code Type Component T (sec)

(AS-PA), (PJ-PA): Geotech S-13—— Z,NS,EW 1.0

Geotech—————— Z,NS,EW 20.0

(BR-PA), (HD-PA): Benioff—————— Z,NS,EW 1.0

Sprengnether—— Z,NS,EW 20.0

469

305

366

665

244

610

369

396

213

457

91

183

366

8/26/69

8/16/62

12/22/62

12/30/62

11/08/62

5/31/62

9/25/64

11/08/62

10/11/62

7/24/62

8/29/69

10/11/62

8/02/62

10/10/69

10/05/62

3/21/63

7/23/65

3721/63

6/28/62

1/25/65

12/12/62

10/27/62

7/27/62

10/10/69

10/27/62

10/05/62

Sandstone and shale.

Sandy clay.

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

Magnetic tape 

--do——————

Portable system. 

Do.

Magnetic tape, (BR-PA): 90 K 

35-mm film. (HD-PA): 100 K 

--do———————

274
PENNSYLVANIA--Continued 

Garland, TX

INSTRUMENTATION—Continued

Seismometer Galvo Type Magnifi

Code Type

(BB-PA), (BD-PA), 

(BV-PA), (GT-PA), 

(LT-PA), (MR-PA), 

(MS-PA), (SH-PA),

(TU-PA): Benioff ——— -

Component T (sec) T (sec) recording at

- —— Z,NS,EW 1.0 —— Magnetic tape, (BB-PA) 

35-mm film. (BD-PA) 

(BV-PA) 

(GT-PA) 

(LT-PA) 

(MR-PA) 

(MS-PA) 

(SH-PA) 

(TU-PA)

cation „ . 

_, Remarks

o

: 140 K 

: 160 K 

: 140 K 

: 140 K 

: 130 K 

: 110 K 

: 80 K 

: 110 K 

: 110 K

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

275
PENNSYLVANIA 

Palisades, NY

GENERAL INFORMATION 

Operated by:

Address:

Lament-Doherty Geological Observatory 

of Columbia University

Department of Seismology 

Lamont-Doherty Geological Observatory 

Columbia University 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

HKP Hidden Lake —————— -

INSTRUMENTATION

Code Type

HKP Geospace HS 10- 

qqr __HO-----_____.

Latitude 

(deg N.)

- —— 41.1612

Seismometer

Component

.__---_ "7

Longitude 

(deg W.)

75.0617 

74.9160

TQ (sec)

0.5

£

Elev Date Date Foundation; geologic age 

(meters) opened closed

337 2/73 7/74 Shale; Silurian. 

259 2/13/73 5/76 Shale; Devonian.

Galvo Type Magnification Remarks

T (sec) recording at T

no __H^___---__ Q7nf> If Maorn' f T r> a H nn ah ^ft Vf 1

J To obtain magnification at 1 Hz multiply by 7.9 x 10-3.

Timing system: Sprengnether TS-200.

System response curves: See figure 9, p. 366.

SHORT HISTORY

Lamont-Doherty publishes a bimonthly bulletin and a yearly bulletin, available from the Observatory.

276
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

San Juan Geophysical Observatory

P.O. Box 936

Cayey, PR 00633

Telephone: 809-738-2281 

Address to obtain records:

U.S. Geological Survey

Branch of Earthquake Tectonics and Risk

Stop 966

Box 25046, Denver Federal Center

Denver, CO 80225

PUERTO RICO 

Cayey, PR

SJG, SJP, and VQS records:

National Geophysical and Solar-Terrestrial

Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

APR Arecibo————————————— 18.4577 66.7295 53

CAG Caguas————————————— 18.2395 66.0353 350

CCA Cerro Cariblanco—————— 18.0697 66.3263 269 

	(Coamo).

CDP Cerro de Punta——————— 18.1752 66.5913 1300

CPD Cerro la Pandura—————— 18.0388 65.9155 370 

	(Yabucoa).

CSB Colonia Sabana——---—— 18.2892 66.1560 480

DOS Dos Bocas——————————— 18.3295 66.6788 400

EYP El Yunque (Luquillo)—— 18.3127 65.7912 1060

IDE Isla Desecheo———————— 18.3865 67.4795 218

IMO Isla Mona——————————— 18.1115 67.9085 84

IMR Isla Mona——————————— 18.0883 67.8472 55

LPR La Peregrina————————— 18.3088 65.8697 580

LRS Lares—————————————— 18.2933 66.8450 440

LSP Las Mesas——————————— 18.1777 67.0862 390

MCP Moca——————————————— 18.4190 67.1107 250

MGP Lajas (Maguayo)—————— 18.0077 67-0892 60

MOV Morovis————————————— 18.2820 66.3667 485

11/14/75 Open—

8/16/74 

2/15/77

7/30/75 

7/30/75

7/30/75 

8/16/74 

7/30/75 

2/15/77

2/15/77

11/14/75

8/10/76

2/15/77 

11/14/75

11/14/75 

11/14/75 

2/15/77

7/17/75 

Open—

—do—

—do—

—do— 

7/17/75 

8/09/76 

Open—

—do—

1/10/77

Open—

—do—

—do —

—do—

—do—

—-do-­

Alluvial deposits; Pleistocene to 

Holocene.

Do.

Plutonic/volcanic rock; Late 

Cretaceous.

Do.

Plutonic rocks; Late Cretaceous to 

Paleocene.

Plutonic/volcanic rock; Late 

Cretaceous.

Plutonic/volcanic rocks; Early 

Cretaceous.

Plutonic/volcanic rocks; Late 

Cretaceous.

Plutonic/volcanic rocks; Late 

Cretaceous to Paleocene.

Limestone; Miocene. 

Do.

Plutonic/volcanic rocks; Late 

Cretaceous.

Plutonic rocks; Late Cretaceous to 

Paleocene.

Sandstone/plutonic rocks; Paleocene 

to Eocene.

Limestone; Miocene. 

Plutonic/volcanic rocks; Cretaceous.

Plutonic/volcanic rocks; Late 

Cretaceous.

277
PUERTO RICO--Continued 

Cayey, PR

SITE INFORMATION--Continued

Code

PNP 

PON 

SJG

SJGC 

SJP 

VQS

Station name

Latitude Longitude Elev Date Date _ , . , . 

,, _ T , /••,,,-> / ^ \ j T j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed ° °

Cretaceous .

Holocene.

Cretaceous .

- —— 18.1117 66.1500 457 2/22/76 --do-- Do.

- —— 18.3817 66.1183 80 12/1925 12/1965

- —— 18.1500 65.4500 20 9/1903 12/1924

INSTRUMENTATION

Code

CCA, CPD, 

CSB, IDE, 

IMO, LPR, 

LRS, MGP, 

MOV, PNP:

APR, LSP, 

MCP:

CAG, DOS, 

PON:

CDP:

EYP: 

IMR:

SJG: 

s.rr,r •

Type

--do ——————— - 

--do ——————— -

(lan+ar-h Q_1Q__.

Seismometer Galvo Type Magnification „ ,

Component T (sec) T (sec) recording at T

Telemetered to the 

Observatory.

- ———— Z 1.0 —— --do —————— 225 K Do.

Observatory.

- ———— Z,NS,EW 1.0 —— --do —————— 225 K, 112.5 K Magnification at 10 Hz; 

horizontals run at half 

magnification of vertical. Telemetered to 

Observatory.

Telemetered to Observatory.

- ———— Z,NS,EW 1.0 —— --do —————— 160 K, 35.2 K Magnification at 5 Hz; 

horizontals run at half 

magnification of vertical. Telemetered to 

Observatory.

- ———— Z,NS,EW 1.0 .75 Photo paper —— WWSSN.

- ———— Z,NS,EW 15.0 100.0 --do ————— —— Do.

Telemetered to the 

Observatory.

278
PUERTO RICO--Continued 

Cayey, PR

INSTRUMENTATION—Continued

Code

VQS:

Type

Seismometer

Component

————— NS.EW

TQ (sec)

12.0 

1.04

25.0

Galvo Type Magnification

T (sec) recording at T

.5 --do —————

Timing system: WWVB and IRIG-E signals recorded directly with a Geotech TG-110 used as a backup. 

System response curves: SJG—see figure 1, p. 363. All Geotech S-13 systems—see figure 10, p. 366. 

SHORT HISTORY

This network is used principally to determine the regional and local seismicity of Puerto Rico and to assess the seismic 

hazard.

The San Juan Magnetic Observatory was established by the USC&GS in 1903, first at VQS and then at SJP.

VQS was established in September 1903 at Fort Isabel Segunda, Vieques Island, Puerto Rico (18 08.9' N. , 65 26.4' W. elevation, 40 m). In March 1907 it was moved to 18°08.8' N., 65°26.9' W., (elevation 20 m). This station was discontinued on 

December 1, 1924, and the instruments were moved to SJP.

SJP was equipped with two Bosch-Omori seismographs, 8-sec periods, which began operating in January 1926. A destructive 

hurricane in September 1928 rendered the station inoperative; it resumed operation in November 1930 with two horizontal Wenner 

instruments. In November 1950 the vertical Benioff was added.

279
GENERAL INFORMATION 

Operated by: 

Address:

University of Puerto Rico

Department of Geology 

University of Puerto Rico 

Mayaguez, PR 00708

Telephone: 809-832-4040 ext. 3575 

Address to obtain records:

As above. 

SITE INFORMATION

PUERTO RICO 

Mayaguez, PR

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

MPR Mayaguez- 18.2128 67.1393 1973 Open--

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

MPR Ranger SS-1- 1.0 Pen and ink

Timing system: Sprengnether TS-300. 

System response curve: Not available.

280
GENERAL INFORMATION

Operated by:

Address:

Lamont-Doherty Geological Observatory of 

Columbia University

Department of Seismology 

Lamont-Doherty Geological Observatory 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

PUERTO RICO 

Palisades, NY

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

CSJ Cape San Juan——-————— 18.3830 65.6181 

Lighthouse.

CUP Culebra————————————— 18.335 65.309 

MTP Mount Pirata, Vieques--- 18.0940 65.5352

PWP Barrio Florida,——————— 18.135 65.445 

Vieques.

RRD Roosevelt Roads—————— 18.2361 65.618 

Naval Base.

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

All stations Hall-Sears 10—————— Z 0.5

3/75 Open— Breccia and tuff flows; Cretaceous.

120 6/75 —do— Sedimentary rock; Tertiary and Cretaceous.

175 3/75 --do-- Weathered plutonic rock of varied composition; Tertiary and Cretaceous.

10 3/75 --do-- Tholeiitic basalt, basaltic-andesite,

and associated sedimentary rock; 

Tertiary and Cretaceous.

40 3/75 --do— Breccia, tuff, partly of marine deposition; Early Cretaceous.

Galvo 

T (sec) 

g

Type Magnification 

recording at T

Remarks

16 Hz Develocorder 250-750 K Magnification variable.

Timing system: Sprengnether TS 100.

System response curves: Available from station.

SHORT HISTORY

These stations were installed and are being maintained as part of the USGS Earthquake Hazards Reduction Program.

281
RHODE ISLAND 

Groton, CT

GENERAL INFORMATION 

Operated by: 

Address:

University of Connecticut

Marine Sciences Institute 

Avery Point 

Groton, CT 06340

Telephone: 203-446-1020 

Address to obtain records:

Weston Observatory 

Boston College 

Weston, MA 02193

617-899-0950

SITE INFORMATION

Code

T AIT

_. . . Latitude Station name , , „ .. (deg N.)

T a-F^roH-a-------.---- --- /.i ^nft

Longitude 

(deg W.)

71 Rfl67

Elev 

(meters)

/.n

Date 

opened

•*l r>^ /Tf,

Date 

closed

6/in/77

Foundation; geologic age

sandstone); Pennsylvanian.

INSTRUMENTATION

Code

LAF

Seismometer Galvo Type Magnification D ,

Type Component T (sec) T (sec) recording at f

Geotech S-13 ——————— Z 1.0 —— Develocorder 50 K Telemetered to APT.

Timing system: Geotech 11395 programmer driven by a Geotech Model 5479 crystal oscillator. 

System response curves: Available from station. 

SHORT HISTORY

LAF was part of the University of Connecticut's network, which was based at Avery Point, Conn. The stations that remained 

active after July 1977 were transferred to Weston Observatory, Mass.

LAF contributed data to the Northeastern United States Seismic Network bulletin.

282
SOUTH CAROLINA 

Aiken, SC

GENERAL INFORMATION 

Operated by:

Address:

£. I. du Pont de Nemours and Company, Inc., for the 

U.S. Department of Energy

Savannah River Laboratory

E. I. du Pont de Nemours and Company, Inc.

Aiken, SC 29801

Telephone: 803-824-6331 ext. 2095, 3469, 2114 

TWX: 810-771-2670 

Address to obtain records:

C.W. Krapp or I.W. Marine 

Environmental Transport Division 

E. I. du Pont 

SRL-773-16A 

Aiken, SC 29801

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(SRPD) Savannah River Plant 

D-Area.

(SRPN) Savannah River Plant 

Navy.

(SRPW) Savannah River Plant 

Well DRB-20.

33.1550 81.7125 31

33.3290 81.5888 95

—— 33.2023 81.5782 77

8/06/76 Open-- Terrace deposits; Quaternary.

8/06/76 --do— Unconsolidated coastal-plain sediments; Tertiary.

8/06/76 --do-­ Do.

INSTRUMENTATION

Code

rcppm

Seismometer Galvo Type Magnification R . _

Type Component T (sec) T (sec) recording at T

(SRPW)

-do-

-do1.0

1.0

9.8 K

--do———— 25.8 K

gain at 5 Hz.

Magnification is medium 

gain at 5 Hz; high 

gain is 51 K at 5 Hz.

Magnification is medium 

gain at 5 Hz.

Timing system: Geotech TG-120 with error comparator with WWV. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

The purpose of the network is twofold: first, to provide a continuous monitor of the seismic activity on and near the 

plant site and thus determine location and magnitude of local earthquakes; second, to determine whether there is a significant 

difference in the ground motion of the two geologically different materials that occur at the surface of the plant and whether 

the response varies over different thicknesses of coastal-plain sediments.

283
SOUTH CAROLINA 

Columbia, SC

GENERAL INFORMATION 

Operated by: 

Address:

University of South Carolina

Seismograph Station, Geology Department 

University of South Carolina 

Columbia, SC 29208

Telephone: 803-777-6449 

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

—do ———————— -

Latitude Longitude Elev Date Date _ , . . , 

, , „ ,. ,,,,•. ,• s j ij Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed ' 6 6 6

- —— 34.0000 81.0333 94 1/01/31 9/73 Granite; Paleozoic(?) .

Seismometer Galvo Type Magnification _ .

Component T (sec) T (sec) recording at T

- ——— Z 1.1 1.6 Photo paper 24 K

- ——— NS.EW 8.0 4.1 --do ————— 13 K

Timing system: Pendulum clock.

System response curves: Not available.

SHORT HISTORY

This station was a cooperative effort of the USC&GS and the University. It was closed because the site became too noisy.

284
(j£iNrjRA.L J.J.I.M. INFORMATION V4U**..* * Vi»

SOUTH CAROLINA 

Denver, CO

Operated by: U.S. Geological Survey

Address: U.S. Geological Survey 

Branch of Earthquake Tectonics and Risk 

Stop 968 

Box 25046, Denver Federal Center 

Denver, CO 80225

Telephone: 303-234-4041 

Address to obtain records: 

As above . 

SITE INFORMATION

Code

(BCS)

(CAF) 

(CCS) 

(CHF) 

FMF

(GVF)

GVS 

HBF 

JSC 

LHS 

(MGS) 

MKC 

(MTT) 

NHS 

OSB 

OSC 

PBS 

(PPS) 

PRM 

SGS 

SMA 

(SVS) 

VSC 

(WAG)

Station name

Charleston.

Francis Marion NationalForest.

Givhans Ferry State----- 

Park.

V

Parsons Mountain--------

Ai rport .

Latitude 

(deg N.)

22

32 

32 

34. 

32

32

33 

32 

34 

34 

32 

33 

33 

33. 

33 

33 

33 

32 

34 

33 

33 

32 

32 

32

.9812

.9150 

.8162 

0247 

.9540

.0167

.5970 

.9330 

.2790 

.4790 

.8970 

.1900 

.7513 

,0720 

.5472 

.5400 

.2790 

.8237 

.0833 

.1930 

.6280 

.9688 

.8790 

.9330

Longitude 

(deg W.)

80

80 

80 

82 

79

80

81 

80 

81 

80 

80 

80 

81. 

79 

80 

80. 

80 

80 

82 

80. 

80 

80 

81. 

80

.0717

.0638 

.2553 

.5867 

.8410

.3667

.8528 

.3780 

.2580 

.8080 

.1408 

.0400 

.6362 

.7560 

.8444 

.8250 

.2640 

.0400 

.3633 

.5120 

.3180 

.2487 

.0500 

.6330

Elev 

(meters)

12

10 

9 

152 

0

15

100 

10 

120 

120 

9 

25 

182 

10 

91 

60 

25 

4 

254 

25 

30 

3 

30 

25

Date 

opened

3/31/76

2/27/73 

3/31/76 

2/14/77 

2/28/73

2/28/73

5/20/74 

3/23/73 

5/20/74 

5/20/74 

3/31/76 

3/13/73 

8/09/76 

5/20/74 

4/02/77 

5/20/74 

5/20/74 

3/31/76 

7/04/75 

3/08/73 

5/20/74 

3/31/76 

5/20/74 

3/02/73

Date 

closed

Open--

9/28/73 

Open-- 

--do-- 

10/02/73

3/04/73

8/09/76 

Open-- 

--do-- 

--do-- 

--do-- 

10/01/73 

Open-- 

--do-- 

--do-- 

3/77 

Open-- 

--do-- 

--do--

--do-- 

7/01/75 

Open-- 

--do-- 

3/23/73

Foundation; geologic age

Alluvium.

Do. 

Do. 

Do. 

Do.

Do.

Granite. 

Alluvium. 

Granite. 

Alluvium and granite. 

Alluvium. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Hard rock. 

Do. 

Do. 

Do. 

Do. 

Do.

285
INSTRUMENTATION

SOUTH CAROLINA—Continued 

Denver, CO

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

(BCS) 

(CAT)

(CCS) 

(CHF)

FMF

(GVF)

GVS

HBF

JSC

LHS

(MGS)

MKC

(MTT) 

NHS 

OSB 

OSC 

PBS

(PPS)

PRM

SGS 

SMA

(SVS)

Mark L-4CGeotech S-13- Z,NS,EW

Mark L-4CZ,NS

Z 

Z 

Z 

Z

—do —————————————

Hall Sears 10—————— 

Geotech S-13—— ——— -

—do—————————————

—-do————————————— Z

—do————————————— Z

Mark L-4C——-——————— Z

Mark L-7—————————— Z,NS,EW

Mark L-4C————————— Z

Geotech S-13——— —— 

Geotech S-13-------

--do—— —— —— — — — —

--do———— —— - — —— -

-do———————————

--do— —— ————————

Mark L-4C————————

NS.EW 

Z 

Z 

Z 

Z 

Z 

Z

Geotech S-13-

—do—- — — ________

—do- ———— — - —— --

Mark L-4C1.0 

1.0

1.0 

1.0

1.0 

1.0 

1.0 

1.0

1.0 

1.0 

1.0 

1.0 

1.0

1.0 

1.0 

1.0 

1.0 

1.0 

1.0 

1.0

1.0

1.0 

1.0

1.0

Helicorder, 26 K 

magnetic tape.

Develocorder

Develocorder

—do——————

Smoked paper 

Develocorder

—do——————

Develocorder

--do—————— 

__do——————

--do——————

-do——————

-do——————

--do——————

Helicorder, 

magnetic tape.

Develocorder

-do-

-do52.8 K

Helicorder, 54 K 

magnetic tape.

26 K

211.2 K 

100 K 

35 K 

124 K

--do—————— 240 K

--do—————— 124 K

Helicorder, 13.8 K

magnetic tape, 

—do—————— 2.8 K

105.6 K

105.6 K 

62 K 

62 K

31 K 

31 K 

13.8 K

240 K

124 K 

31 K

Helicorder, 54 K 

magnetic tape.

Magnification at 2 Hz.

Magnification at 2 Hz. 

Telemetered to the 

University of South 

Carolina.

Magnification at 2 Hz. 

Telemetered to BCS.

Magnification at 2 Hz. 

Telemetered to the 

University.

Do.

Magnification at 2 Hz. 

Do.

Magnification at 2 Hz. 

Telemetered to the 

University.

Do. 

Do.

Magnification at 2 Hz.

Telemetered to BCS. 

Magnification at 10 Hz.

Magnification at 2 Hz. 

Telemetered to the 

University. 

Do.

Do. 

Do. 

Do. 

Do. 

Do.

Magnification at 2 Hz. 

Telemetered to BCS.

Magnification at 2 Hz. 

Telemetered to the 

University.

Do.

Telemetered to the 

University.

Magnification at 2 Hz. 

Telemetered to BCS.

286
SOUTH CAROLINA--Continued 

Denver, CO

INSTRUMENTATION—Continued

Seismometer Galvo Type Magnification »»„„„!,«.

Code Type

VSC Geotech S-13 ——— -

(WAC) Mark L-4C —————— -

Component T (sec) T (sec) recording at T -<«-—».-•

Telemetered to 

University.

Z 1.0 —— --do —————— 105.6 K Do.

2 Hz. 

the

Timing system: Geotech TG-120. The mini-net uses a Geotech TG-110.

System response curves: See figure 10, p. 366 for the main network. See figure 2, p.363 for the mini-net.

SHORT HISTORY

(BCS) is the central station of the mini-net comprising (BCS), (CCS), (MGS), (PPS), and (SVS). 

The main network consists of all the other operating stations.

287
GENERAL INFORMATION 

Operated by: 

Address:

Jerome E. Payne

Jerome E. Payne

Eagle Butte, SD 57625

Telephone: 605-964-3591 

Address to obtain records:

As above. 

SITE INFORMATION

SOUTH DAKOTA 

Eagle Butte, SD

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

BBS Eagle Butte- 44.9998 101.2322 735 5/72 Open-­ Clay.

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

Remarks

BBS Custom- 1.0 Pen and ink 150 K

Timing system: Westclox quartzmatic time adjusted to WWV twice daily. 

System response curve: Not available. 

SHORT HISTORY

BBS is the avocation of the owner and operator of the station.

288
SOUTH DAKOTA 

Rapid City, SD

GENERAL INFORMATION 

Operated by: 

Address:

South Dakota School of Mines

Department of Geological Engineering 

South Dakota School of Mines 

Rapid City, SD 57701

Telephone: 605-394-2461 

Address to obtain records:

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

RCD Rapid City- 44.0750 103.2083 995 9/43 Open-- Belle Fourche Shale; Late Cretaceous.

INSTRUMENTATION

Seismometer

Code

RCD

Type Component TJsec)

1.0 

15.0

Galvo 

T (sec)

0.75 

100.0

Type Magnification 

recording at T

--do —————

Remarks

WWSSN. 

Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

Although the station opened in 1943, operation did not become continuous until 1946 with the installation of a WilsonLamison vertical and a Wood-Anderson horizontal. In 1956 the instrumentation was expanded. On December 15, 1961, the WWSSN 

equipment was installed. Until 1974, recording was fairly continuous. Exceptions were a period between April 1967 and 

December 1969, when no recording was made, and from 1969 to 1973, when several months of data gaps occurred. In November 1974 

the station was temporarily shut down because of construction nearby. An effort is being made to make the station operational 

again.

289
SOUTH DAKOTA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(AY-SD) 

(CO-SD) 

(DL-SD) 

(MC-SD) 

(RG-SD) 

(SX-SD) 

(SY-SD) 

(WN-SD)

„. . . Latitude Longitude Station name ,, „ ^, / Jt, \ (deg N.) (deg W.)

Colome ————————————— 43.2867 99.6703

Dell Rapids ————————— 43.8328 96.7733

Mitchell ———————————— 43.6544 97.9194

Redig —————————————— 45.2164 103.5347 

Salem —————————————— 43.8747 97.2500

Stickney ———————————— 43.6056 98.4917

Winner —————————————— 43.2522 100.1961

Elev Date Date 

(meters) opened closed

610 7/14/62 10/05/62 

640 7'/06/62 7/11/62 

488 12/28/62 3/21/63 

366 5/09/62 6/28/62 

945 10/25/65 9/26/66 

488 11/09/62 12/12/62 

488 10/12/62 10/27/62

792 12/08/61 6/19/63 

6/07/64 10/01/64 

10/25/65 10/14/66 

8/03/67 12/10/67

Foundation; geologic age

---

Granite .

Mesozoic and Cenozoic clastic 

rocks and Paleozoic limestone.

INSTRUMENTATION

Code

(AY-SD) 

(SX-SD) 

(last 3

(CO-SD) 

(MC-SD) 

(WN-SO)

Seismometer

Type Component T (sec)

, (RG-SD), 

, (WN-SD)

oper.): Benioff ——————— Z,NS,EW 1.0

Sprengnether ——— Z,NS,EW 20.0

, (DL-SD), 

, (SY-SD),

(1st oper): Benioff ——————— Z,NS,EW 1.0

Galvo Type

T (sec) recording

--- Magnetic tape, 

35-nun film.

--do ———————

--do ———————

Magnification „ , 

e . _ Remarks at T 

o

(AY-SD): 60 K 

(RG-SD): 70 K 

(SX-SD): 70 K 

(WN-SD): 60 K

(CO-SD): 40 K 

(DL-SD): 260 K 

(MC-SD): 200 K 

(SY-SD): 70 K

290
SOUTH DAKOTA—Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

291
GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

McMinnville Observatory—Unmanned 

McMinnville, TN 37110 

(Obsolete)

Address to obtain records:

1962-1966:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

TENNESSEE 

McMinnville, TN

1966-present:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

CPO Cumberland Plateau- 35.5948 85.5704 574 2/13/63 Open-- Sandstone and limestone; Pennsylvanian.

INSTRUMENTATION

Code

rpn

Seismometer Galvo Type Magnification „ ,

Type Component T (sec) T (sec) recording at T

Helicorder. Magnification at 1 sec.

Timing system: Time added at GLD.

System response curves: Available with records.

SHORT HISTORY

CPO was established as part of the VELA-Uniform project. Texas Instruments and Geotech alternated operation of the station 

until May 1967 when the USC&GS took over the operation. Originally, CPO was constructed like BMO: it had 19 instruments in an 

array, as well as 6 additional instruments in the tank farm. This extended operation ceased in September 1975, and currently 

the station only operates a single instrument, monitored remotely.

292
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Memphis State University

Department of Geology 

Memphis State University 

Memphis, TN 38152

901-454-2177 and 454-2178

TENNESSEE 

Memphis, TN

Code „. . . Latitude Station name ,, ., . (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

MT7T Mamnhi o----------------- 1<^ 1 0 1 1 «Q QOR« Q 1 11/1A/7Q fV,an-- Tnocc- PI »i c t nr*c*nr>

INSTRUMENTATION

Code

MET

Seismometer Galvo

Type Component T (sec) T (sec)

Sprengnether S-5100-- Z,NS,EW 30.0 0.78, 0.77,

0.73

Type Magnification R ,

recording at T

Visual, 1 K

photographic .

Timing system: Sprengnether TS-100 crystal chronometer checked with WWV. 

System response curves: Not available. 

SHORT HISTORY

MET was established to supply information about the area after public concern arose over the classification of Memphis in 

risk zone 3. The vertical unit was the first to be installed, followed by the horizontals in July 1975. Photo records were sent 

to Oxford, Miss., read, and then stored there. They are now stored at Memphis State University.

293
TENNESSEE 

Oak Ridge, TN

GENERAL INFORMATION 

Operated by: 

Address:

Union Carbide Corporation—Nuclear Division

Office of Waste Isolation

Union Carbide Corporation—Nuclear Division

P.O. Box Y, Bldg. 9102-2

Oak Ridge, TN 37830

Telephone: 615-483-8611 ext. 3-5868 

Address to obtain records:

As above. 

SITE INFORMATION

Code „. . . Latitude Station name , , ,, x (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

fYRT n-ib- Ri Hr,o---___-___-_-_- 1^ Qna^ Q/, Qn/,Q T7n f,/f,7 rinon-- Ifnnv Hn 1 nmi' f- o • T a f f> Tarnhrian anH

Early Ordovician.

INSTRUMENTATION

Code

ORT

Type

Geotech 28280--

Seismometer

Component T (sec) 

o

1.0 

11.0

Galvo Type 

T (sec) recording

--- Heated pen 

--do —— ——

Magnificat ion 

at T

0

40-100 K 

1-2.5 K

Remarks

Magnification of 

60-120 K. 

Magnification at

Z is 

10 sec.

Timing system: Geotech TG-110.

System response curves: Available from station.

SHORT HISTORY

ORT operated from July 1967 to May 1973 with a single short-period vertical instrument. From May 1973 to February 1975, the 

station was inoperable; then it was moved within 1 km of the original site. The coordinates above are the current site. The 

station is located at what was known as the Oak Ridge National Laboratory.

294
TENNESSEE 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(CP-SO)

(CS-TN) 

(CV-TN)

(JS-TN)

(LE-TN) 

(MM-TN) 

(MX-TN) 

(PB-TN) 

(WT-TN)

Station name

Observatory.

Latitude 

(deg N.)

- —— 35.5947

- —— 35.8153

- —— 35.7700 

- —— 35.6556

- —— 35.5503

- —— 36.1097

Longitude 

(deg W.)

85.T706

85.1594 

87.3844

88.6128

86.7672 

85.5889 

86.2700 

88.1361 

84.7578

Elev Date Date Foundation; geologic age 

(meters) opened closed

574 3/14/75 7/28/76

579 1/01/63 3/21/63

183 11/25/61 12/20/61 

7/15/62 10/05/62

152 12/11/61 12/19/61 

5/10/62 6/28/62

213 10/17/62 10/27/62 

381 12/17/61 4/01/63 Sandstone and limestone; Paleozoic. 

305 11/14/62 12/12/62 

122 7/06/62 7/11/62 

427 4/12/63 7/31/63 Sandstone.

INSTRUMENTATION

Code

(CP-SO):

(CS-TN), 

(JS-TN) , 

(MM-TN) , 

(WT-TN) :

Type

Seismometer

Component

Geotech S-13 ——— Z,NS,EW

Geotech ——————— Z,NS,EW 

Johnson-Matheson Z

(CV-TN) , 

(LE-TN) , 

(PB-TN) ,

T (sec) 

o

1.0 

10.0 

1.0

1.0

Galvo Type Magnification Pp-nark*

T (sec) recording at T

--- Magnetic tape 130 K Portable system.

--- --(jo--..--.-- -_- Instruments in an 

array.

35-mm film. (CV-TN): 260 K 

(JS-TN): 50 K 

(LE-TN): 160 K 

(PB-TN): 230 K 

(WT-TN): 320 K

295
TENNESSEE—Continued 

Garland, TX 

INSTRUMENTATION—Continued

_________Seismometer_____________ Galvo Type Magnification „ , 

Code Type Component T (sec) T (sec) recording at T

(CV-TN) 

(MX-TN) ;

(2d oper.) ,

Sprengnether----

Z,NS,EW 

Z.NS.EW

1.0

20.0 —— do ———————

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

296
TENNESSEE 

Saint Louis, MO

GENERAL INFORMATION 

Operated by: 

Address:

Saint Louis University

Department of Earth and Atmospheric Sciences

Saint Louis University

P.O. Box 8099, Laclede Station

St. Louis, MO 63156

Telephone: 314-535-3300 

Address to obtain records:

As above. 

SITE INFORMATION

„ , _. . . Latitude Longitude Elev Date Date Code Station name ,, „ x ,, ,, , , . *. , , , (deg N.) (deg W.) (meters) opened closed

DY1 Dyersburg (Lane) —————— 36.1917 89.3917

DY2 Lassiter ———————————— 36.3302 89.3520

DY3 Tiptonville ————————— 36.4430 89.5069

DY4 Samburg ————————————— 36.4167 89.3031

DY5 Lassiter Corners —————— 36.3247 89.3621 

CRT Gratio ————————————— 36.2640 89.4250

HHT Hurricane Hollow —————— 36.1711 87.9014 

(LTN) Lenox —————————————— 36.0720 89.4700

NKT Nankipoo ———————————— 35.8500 89.5540

OKG Oak Grove ——————————— 36.6260 89.8350

ZZT Zu Zu —————————————— 35.3640 89.3720

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

DY1, DY2,

DY4, DY5: Hall Sears 10 —————— Z 1.0

CRT- Mavb- T/,-r------______ 7 in

120 1969 1970 

110 1969 1970

87 1969 1972 

140 1969 1972

134 1970 1972 

137 6/28/74 Open--

113 Early 60' s Closed 

148 8/77 Open--

153 6/26/74 --do-- 

129 6/27/75 --do-- 

120 3/74 9/75

Galvo Type 

T (sec) recording

0.5 Magnetic tape 

--do —— —— ——

Foundation; geologic age

Loess (Quaternary) overlying Wilcox 

Formation (Eocene).

Loess (Quaternary) overlying siltstone 

of the Wilcox Formation (Eocene).

Gumbo sandy clay; Quaternary.

Loess (Quaternary) overlying Wilcox 

Formation (Eocene).

Do.

Loess (Quaternary) overlying siltstone 

of the Wilcox Formation (Eocene).

Loess (Quaternary) overlying Wilcox 

Formation (Eocene).

Do. 

Do. 

Do.

Magnification _ , 

at T emar S

0

50 K DY4 and DY5 telemetered to 

DY3 . (Autocorders used 

before 1969.)

50 K Magnification at 2 Hz.

Q/.Q V Monni -Pi r<a1-inn o 1- Ifi !!•»

magnetic tape. Telemetered to SLM.

HHT:

297
TENNESSEE--Continued 

Saint Louis, MO

INSTRUMENTATION—Continued

Seismometer Galvo Type Magnif icatioi

Code

(LTN) :

NKT

OKG 

ZZT

Type Component T (sec) T (sec) recording

magnetic tape.

EV-17H ——————————— NS,EW 1.0 16 Hz --do -------

magnetic tape.

at T 

o

400 K 

200 K 

410 K

442 K 

50 K

Remarks

Magnification at 10 Hz. 

Telemetered to SLM. 

Do.

Do.

Do. 

Recorded on Autocorder.

Timing system: Sprengnether TS-100.

System response curves: Available from the University.

SHORT HISTORY

DY1 was founded as part of a tripartite network. It was too noisy and was moved to DY2 in early 1970.

DY2 was only a temporary site for the instrument moved from DY1. The instruments were ultimately moved to DY5.

CRT is part of the SIR array.

(LTN), NKT, and OKG are part of the PGA array.

The University publishes the quarterly bulletin of the Southeast Missouri Regional Seismic Network.
GENERAL INFORMATION 

Operated by: 

Address:

Ralph W. McNeely

Ralph W. McNeely 

9612 Crestedge 

Dallas, TX 75238

Address to obtain records:

As above. 

SITE INFORMATION

TEXAS 

Dallas, TX

,, , Code „. . . Station name

Latitude Longitude Elev Date Date

,, „ , ,, ° ,, , , , , , ,

(deg N.) (deg W.) (meters) opened closed

_ , . , Foundation; geologic age

DLS Dallas 32.8778 96.7056 169 2/20/71 1975 Austin Group; Late Cretaceous.

INSTRUMENTATION

Code

DLS

Seismometer

Type Component T (sec)

Sprengnether 100 —— -- --- ---

Johnson-Matheson----- - — ---

Galvo Type Magnification

T (sec) recording at T

--- Helicorder ---

--do ------ 

--do ------

——

---

Timing system: Geotech 5400A.

System response curves: Not available.

SHORT HISTORY

This station was the avocation of the owner.

299
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Southern Methodist University

Dallas Seismological Observatory 

Southern Methodist University 

Dallas, TX 75275

214-692-2760

Address to obtain records:

As above. 

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

TEXAS 

Dallas, TX

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

DAL Dallas—————————————— 32.8461 96.7839 187 1953 Open— Austin Group; Late Cretaceous.

INSTRUMENTATION

Seismometer

Code

DAL

Type

Benioff ————— —— -

Component T (sec)

1.0 

15.0

Galvo 

Tg (sec)

0.75 

100.0

Type Magnification 

recording at T

Photo paper

--do —————

25 

1.

K 

.5 K

Remarks

WWSSN. 

Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

The WWSSN equipment began operating in June 1962.

300
GENERAL INFORMATION 

Operated by: 

Address:

John W. Grain

John W. Grain—Deceased

Denton, T%

(Obsolete)

Address to obtain records:

Apparently the only existing record is of a 1931 event, and it is 

held at the University of California, Berkeley.

SITE INFORMATION

TEXAS 

Denton, TX

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

DNT Denton- 33.2167 97.1333 208 1925 Closed Clay.

INSTRUMENTATION

Code

DNT

Seismometer Galvo Type Magnification R , „

Type Component TQ (sec) T (sec) recording at TQ

pendulum .

Timing system: Not available.

System response curve: Not available.

SHORT HISTORY

The station was the avocation of the owner. His record of the August 16, 1931, earthquake in Texas was used by 

Perry Byerly in his analysis of that event.

301
TEXAS

El Paso, TX

GENERAL INFORMATION 

Operated by: 

Address:

University of Texas

Kidd Memorial Seismic Observatory 

University of Texas at El Paso 

El Paso, TX 79968

Telephone: 915-747-5776 

Address to obtain records:

As above. 

SITE INFORMATION

Code „. . . Latitude Station name , , ... (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

FPT F1 Pae^__--_____________ tl 7717 int. cntfi 1 1 B£. O/Al n^on_- Anriacito- F<>r-ono

INSTRUMENTATION

Code

i

Type

seismometer

Component T (sec)

0

1.0

15.0

Galvo

Tg (sec)

0.75

100.0

Type Magnification

recording at T

--do —————

UUQQM

Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

The Kidd Memorial Seismic Observatory was founded in 1959 through donations made in the memory of Professor John Kidd, a 

key figure in the early history of the University at El Paso. Fulltime operation was begun in February 1962. The origiaal 

instruments were three-component short-periods. The WWSSN instruments were moved from OXF, Oxford, Miss., and began operation 

on June 7, 1977.

302
GENERAL INFORMATION

Operated by:

Address:

Marine Science Institute of 

the University of Texas

Geophysics Laboratory 

Marine Science Institute 

University of Texas 

700 The Strand 

Galveston, TX 77550

Telephone: 713-765-2158 

Address to obtain records:

As above.

TEXAS 

Galveston, TX

SITE INFORMATION

Code _. . . Latitude Station name , , „ ,. (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

HKT Hockley————————————— 29.9500 95.8333 -122 6/73 Open--

MOT McDonald Observatory—— 30.6797 104.0082 2020 8/75 --do--

(MT2) Eagle Mountain——————— 30.8992 105.0146 2084 3/77 --do-­

Salt dome.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

MT2

--do ————————————— Z

--do ————————————— Z

1.0 

1.0

--do ———— 100 K 

— do —— ——

Institute. 

Do.

Timing system: Geotech clock checked with WWV daily. 

System response curves: Not available.

303
TEXAS 

Garland, TX

GENERAL INFORMATION

Operated by: Teledyne Geotech

Address: Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(AZ-TX) 

(BM-TX) 

(EF-TX) 

(E02TX) 

(EP-TX) 

(FO-TX) 

(GA-TX)

(GA3TX) 

(GL-TX) 

(GR1TX) 

(GR2TX) 

(GV-TX) 

(HE-TX) 

(JU-TX) 

(LP-TX) 

(PO-TX) 

(SA2TX)

(SA4TX) 

(SJ-TX)

Station name

--do ——— - ---------

_. do ._ ———— __ ———— _

—do —————__————_

Latitude 

(deg N.)

—— 35.4300

—— 30.9264

—— 31.1764

—— 30.9017

—— 32.6597

—— 30.7864

—— 30.1997

—— 30.1119

—— 29.1797

—— 33.4756

—— 31.5500

—— 31.8247 

—— 27.6119

Longitude 

(deg W.)

101.9306 

103.8550 

105.1300 

96.1586 

105.9667 

102.6978 

95.7044

95.7036 

96.6350 

99.3842 

99.4161 

96.9983 

96.0919 

101.0772 

99.6764 

101.3622 

100.9075

101.4264 

98.3128

Elev Date 

(meters) opened

988 8/28/63 

1067 1/20/62 

1433 1/25/62 

158 3/15/68 

1615 1/15/62 

880 6/21/64

-86 10/16/68 

10/25/68 

3/13/70

-94 10/01/71 

168 1/19/68 

518 5/19/67 

549 5/19/67 

152 6/02/62 

67 7/25/63 

533 4/04/64 

274 11/27/61 

914 12/09/61

732 4/17/67 

4/16/67

792 4/17/67 

5/18/67

114 11/11/61 

10/26/65 

8/03/67 

1/16/68 

8/21/69 

9/23/71 

5/08/73

Foundation; geologic age

3/06/64 Dolomite. 

2/15/62 Limestone. 

5/03/62 Do. 

3/26/68 

5/04/62 Limestone. 

4/12/65 Alluvium.

4/23/69 

4/23/69 

8/11/70

11/10/71 

1/19/68 

5/23/67

C / O Q /£ "7 —

12/31/65 Clay and shale; Cretaceous. 

3/16/64 Clay. 

8/11/64 Alluvium. 

5/16/62 Limestone. 

12/20/61

5/08/67 Limestone. 

5/16/67

5/08/67 Do. 

5/23/67

7/08/63 Caliche; Cenozoic. 

11/15/65 

9/18/67 

1/19/68 

10/10/69 

11/09/71 

5/22/73

304
SITE INFORMATION— Continued

,, , ,,. . . Latitude Longitude Code Station name ,, „, /i ,, \ (deg N.) (deg W.)

(SK-TX) Shamrock ———————————— 35.0828 100.3639

(SM-TX) Seymour ————————————— 33.6822 99.1897 

(SS-TX) Sanderson ——————————— 30.0214 102.3281

(ST1TX) Streeter ———————————— 30.7522 99.3556

(WP-TX) Wills Point ————————— 32.6069 95.8861

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(A2-TX), (BM-TX), 

(GV-TX), (JU-TX), 

(SJ-TX) (2d and 

3d oper. ) ,

(SK-TX), (SS-TX): Benioff —————— Z,NS,EW 1.0

Sprengnether —— Z,NS,EW 20.0

(EF-TX), (EP-TX), 

(FO-TX), (HE-TX), 

(LP-TX), (PO-TX), 

(SJ-TX) (1st oper.),

(SM-TX); Benioff —————— Z,NS,EW 1.0

(E02TX), (GA3TX), 

(SA2TX), (SA4TX), 

(ST4TX): Geotech S-13 —— Z,NS,EW 1.0

Elev Date Date 

(meters) opened closed

671 8/19/63 3/06/64 

396 12/06/61 12/20/61 

732 10/19/61 6/11/63 

518 4/15/67 5/23/67 

579 4/16/67 5/23/67 

640 4/16/67 5/16/67 

161 3/18/71 5/31/72

Galvo Type 

T (sec) recording

Magnetic tape, 

35-mm film.

—do ———————

--do —————— -- 

--- Magnetic tape

TEXAS—Continued 

Garland, TX

Foundation; geologic age

Gypsum.

Limestone; Cretaceous. 

Granite. 

Limestone. 

Limestone.

Magnification Remarks 

at o

(AZ-TX): 80 K 

(BM-TX): 300 K 

(GL-TX): 55 K 

(GV-TX): 35 K 

(JU-TX): 300 K 

(SK-TX): 150 K 

(SS-TX): 500 K

(EF-TX): 500 K 

(EP-TX): 300 K 

(FO-TX): 360 K 

(HE-TX): 50 K 

(LP-TX): 400 K 

(PO-TX): 150 K 

(SJ-TX): 80 K 

(SM-TX): 150 K

SA2TX: 250 K Portable system. 

SA4TX: 210 K 

ST4TX: 140 K

305
INSTRUMENTATION--Continued

TEXAS--Continued 

Garland, TX

Code Type

Seismometer

Component To (sec)

Galvo ' 

Tg (sec)

Type 

recording

Magnification _ , 6 Remarks

o

(GA-TX), (GL-TX), 

(GR1TX), (GR2TX), 

(SA4TX) (2d oper.), 

(SJ-TX) (4th to 7th 

oper.), (ST1TX), 

ST2TX):

(WP-TX):

Geotech S-13——— Z,NS,EW

Geotech--—--- 

Geotech 31300-

Z,NS,EW 

Triaxial

1.0

20.0

20.0

-do- SJ-TX: 80 K

ST1TX: 350 K

ST2TX: 300 K

-do-

-doDo.

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

306
TEXAS 

Houston, TX

GENERAL INFORMATION

Operated by: Mandrel Industries, Inc.

Address: Ray Geophysical Division 

Mandrel Industries, Inc. 

6909 Southwest Freeway 

P.O. Box 36306 

Houston, TX 77036

Telephone: 713-774-7561 

Telex: 077-252 

Address to obtain records:

Unknown. 

SITE INFORMATION

Code

HTTT

„.. . . Latitude Station name *, „ ,. (deg N.)

Hr.nei-r.ri - T7T- ----------- 9Q T)t\f\

Longitude 

(deg W.)

a*. /.<;QQ

Elev 

(meters)

<;

Date 

opened

1QA1

Date 

closed Foundation; geologic age

INSTRUMENTATION

_____________Seismometer_____________ Galvo Type Magnification R , 

Code TypeComponentT (sec) T (sec) recording at T emar S

HET Electro-Tech---———— Z 5.0 25.0 --- —— ---

Timing system: Not available.

System response curve: Not available.

307
GENERAL INFORMATION 

Operated by: 

Address:

Rice University

Seismographic Station 

Geology Department 

Rice University 

P.O. Box 1892 

Houston, TX 77001

Telephone: 713-527-4886 

Address to obtain records:

As above. 

SITE INFORMATION

TEXAS 

Houston, TX

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

HOU Houston- 29.7189 95.4022 15 -I960 Open Clay; Holocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

HOU Press-Ewing- Z,NS,EW 12.0 Pen and ink 1 K

Timing system: Tuning-fork chronometer synchronized with WWV. 

System response curves: Available from station. 

SHORT HISTORY

HOU is run on an experimental basis and has not been operated continuously.

308
TEXAS 

Lubbock, TX

GENERAL INFORMATION 

Operated by: 

Address:

Texas Technological University

Seismological Observatory 

Texas Technological University 

P.O. Box 4109 

Lubbock, TX 79409

Telephone: 807-742-3116 

Address to obtain records:

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code

LUB 

JCT

Station name

Latitude 

(deg N.)

—— 30.4794

Longitude 

(deg W.)

101.8667 

99.8022

Elev 

(meters)

979 

591

Date 

opened

6/48 

3/10/65

Date 

closed

Open — 

--doFoundation; geologic

Caliche; Pleistocene. 

Edwards Limestone; Early

age

Cretaceous .

INSTRUMENTATION

Code

T TTR

<

Type

Benioff ——————— -

seismometer

Component To (sec)

1.0

15.0

1.0

15.0

Galvo

T (sec)

0.75

100.0

.75

100.0

Type I

recording

--do —————

--do ----- --

—do — —— —

lagnification

at T 

o

1 . j Jv

UUQQM

Do.

Do.

Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

LUB started operating its WWSSN equipment on December 12, 1961, after several years of operation using other equipment.

The JCT site was chosen for its quiet, aseismic characteristics, as evidenced by the high short-period magnifications. 

Operations were continuous, but occasionally reduced in scope to record only the short-period vertical instrument. Texas 

A & M University ran the station from the time of installation until September 1, 1971, when ownership of the host facility 

passed by legislative action to Texas Technological University.

309
TEXAS 

Denver, CO

GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

U.S. Geological Survey

U.S. Geological Survey

Branch of Earthquake Hazards

Stop 978

Box 25046, Denver Federal Center

Denver, CO 80225

303-234-5604 

45-509

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

KM2 Kermit—————————————— 32.0925 103.0718 932 12/15/76 Open--

KM5 --do——————————————— 31.8317 103.0317 874 10/15/76 --do--

KM6 --do——————————————— 31.9825 102.8632 1030 10/16/76 --do--

KM9 --do——————————————— 31.7482 102.8563 888 10/14/76 --do--

KME --do——————————————— 31.5782 103.1200 816 10/14/76 --do--

KT1 --do——————————————— 32.0681 103.3261 930 11/08/75 --do--

KT2 --do——————————————— 32.0894 103.1022 927 1/20/76 12/15/76

KT4 --do———————————————— 31.9097 103.3153 948 1/17/76 Open--

KT5 --do——————————————— 32.0680 103.3262 —— 3/24/76 10/15/76

KT7 --do——————————————— 31.7092 103.3061 847 11/13/75 Operi--

KT8 --do——————————————— 31.7036 103.0981 840 1/16/76 --do--

KT9 --do——————————————— 31.7178 102.8811 869 1/17/76 10/14/76

KTE --do——————————————— 31.5278 103.0975 799 1/15/76 10/14/76

KTT --do——————————————— 31.5436 102.8819 795 11/10/75 Open--

KTX --do——————————————— 31.5306 103.2892 847 1/16/76 --do--

INSTRUMENTATION

_____________Seismometer_____________ Galvo Type Magnification ,

Code Type Component T (sec) T (sec) recording at T

All stations Mark L-4C————————— Z 1.0 —— Develocorder 15-25 K Telemetered to GLD.

310
TEXAS—Continued 

Denver, CO

Timing system: Time added at GLD.

System response curves: Not available.

SHORT HISTORY

This network was established to monitor seismicity in conjunction with the water table. The numbering in the codes 

reflects the order in which the stations were installed; X, E, and T are abbreviations for 10, 11, and 12. The KM designation 

reflects a changed location for the KT station of the same number; when no code for a KT station of the same number exists, 

the station was planned but never became operational.

311
TEXAS

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

National Center for Earthquake Research 

U.S. Geological Survey 

345 Middlefield Road 

Menlo Park, CA 94025

Telephone: 415-323-8111 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

CEC (TCEC) Childress 

CNE (TCNE) Childress 

CNO (TCNO) Childress 

CNW (TCNW) Childress 

CSE (TCSE) Childress 

CSW (TCSW) Childress 

CWT (TCWC) Childress

INSTRUMENTATION

East CentralNortheast —— 

North -------

Northwest- —— 

Southeast- —— 

Southwest ---- 

West CentralLatitude 

(deg N.)

34.5720 

34.5838 

34.5780 

34.5917 

34.5558 

34.5570 

34.5703

Longitude 

(deg W.)

100.3258 

100.3103 

100.3352 

100.3597 

100.3305 

100.3480 

100.3437

Seismometer

Code

All stations Mark

Type

L_4C ——————— -

Component To (sec)

1.0

Elev Date Date Foundation; geologic age 

(meters) opened closed

548 —— 1974 

555 —— 1974 

562 —— 1974 

540 —— 1974 

521 —— 1974 

546 —— 1974 

549 —— 1974

Galvo Type Magnification D^mo^irc

T (sec) recording at TQ KemarKS

Magnetic tape ---

Timing system: Not available.

System response curves: See figure 1, p. 363.

312
UTAH

Salt Lake City, UT

GENERAL INFORMATION 

Operated by: 

Address:

University of Utah

Seismograph Stations

Department of Geology and Geophysics

611 Browning Building

University of Utah

Salt Lake City, UT 84112

Telephone: 801-581-6274 

Address to obtain records:

As above.

FGU records from 1960 to 1969:

National Geophysical and SolarTerrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

UBO records:

Teledyne-Geotech 

Seismic Data Analysis Center 

314 Montgomery 

Alexandria, VA 22314

Code

AAU

ANU

BDU

BPU

ecu

(CFU)

CPU

CWU

DAU

DCU

DUG

EPU

ETU

FGU

FPU

GMU

HDU

HTU

HVU

LMU

LOG

LTU

Station name

Alta — — —— — —— —— —

Antelope Island — ——

Big Dutch Hollow -----

Bountiful Peak- — — —

Cedar City -----------

Cove Fort ----------

Coon Peak — -- — — ----

Camp Williams-- —— —

Daniels Canyon--- — --

Deer Creek -----------

Dugway---- — --- — - — -

East Promontory--- — -

East Traverse — --- — -

Flaming Gorge----- — -

Francis Peak-- —— - ——

Granite Mountain -----

Hyde Park —— ——— ——

Hoyt Peak ——— ——— —

Hansel Valley ———— —

Lake Mountain —— — —

Logan — -- — - ————— —

Little Mountain ------

Latitude 

(deg N.)

—— 40.5920

—— 41.0397

—— 40.8742

—— 40.9542

—— 37.6753

—— 38.6188

—— 40.6730

—— 40.4458

—— 40.4125

—— 40.4137

—— 40.1950

—— 41.3951

—— 40.4773

—— 40.9263

—— 41.0263

—— 40.5755

—— 41.8045

—— 40.6753

—— 41.7797

—— 40.2832

—— 41.7417

—— 41.5918

Longitude 

(deg W.)

111.6383

112.2317

111.5340

111.8175

113.0685

112.5387

112.1903

112.1022

111.2558

111.5268

112.8133

112.4088

111.8445

109.3862

111.8368

111.7632

111.7648

111.2202

112.7750

111.9370

111.8133

112.2472

Elev 

(meters)

2694

1353

2198

2652

1775

2012

2228

1945

2771

1829

1477

1436

1884

1982

2816

1829

1853

2576

1609

2316

1455

1585

Date 

opened

11/74

11/75

9/74

10/74

12/68

3/77

11/74

10/74

11/74

11/74

5/62

9/75

Hlk

1960

9/74

8/70

3/75

11/74

11/76

9/74

1/26/40

9/74

Date 

closed

4/76

Open—

— do—

3/75

Open—

— do—

— do—

— do—

— do—

— do—

— do—

— do—

— do—

6/76

Open —

— do—

— do—

— do—

— do—

— do—

9/76

Open —

Foundation; geologic age

Shaly sandstone; Paleozoic.

Quartzite; Precambrian.

Conglomerate; Tertiary.

Schist, gneiss; Precambrian.

Alluvium; Quaternary.

Volcanic flow; Tertiary.

Limestone; Paleozoic.

Do.

Do.

Do.

Rhyolite-quartz dacite flow; Tertiary.

Limestone; Paleozoic.

Do.

Sandstone; Jurassic.

Schist, gneiss; Precambrian.

Quartz monzonite; Cretaceous, Tertiary.

Limestone, dolomite; Paleozoic.

Sandstone; Paleozoic. •

Limestone; Paleozoic.

Do.

Alluvium; Quaternary.

Limestone; Paleozoic.

313
UTAH--Continued 

Salt Lake City, UT

SITE INFORMATION--Continued

Code

MCU 

(MNU) 

MSU 

NSU 

OGU 

PBU 

PCU 

PPU 

(PTU) 

(PUU) 

RBU 

(RFU) 

(RHU) 

SAU 

SBU 

SLC 

SQU 

SUU 

UBO 

WHU 

(WIU) 

WNU

Station name

Roosevelt Hotsprings----

Wild Horse —— — — — — — —

Willard —— — —— — - —— - —

Latitude 

(deg N.)

41 

38 

38 

40 

41 

41 

39 

41 

41 

38 

40 

38 

38 

40 

40 

40 

40 

39 

40 

39 

41 

40

.4617 

.6198 

.5133 

.9082 

.2750 

.4682 

.6067 

.3107 

.9293 

.3580 

.7808 

.7857 

.4723 

.8197 

.8218 

.7638 

.2817 

.8887 

.3217 

.3805 

.4222 

.0883

Longitude Elev Date Date Foundation; geologic age 

(deg W.) (meters) opened closed

111. 

112. 

112. 

112. 

111. 

112. 

110. 

112. 

112. 

112. 

111. 

112. 

112. 

112. 

112. 

111. 

111. 

111. 

109. 

112. 

111. 

111.

5075 

8473 

1742 

5060 

9440 

0097 

.8050 

.4303 

3247 

2745 

8083 

,1092 

.8472 

,0730 

.4667 

.8478 

.6105 

,7917 

.5668 

,1698 

,9717 

,8227

2664 

1664 

2141 

1422 

1506 

1625 

1714 

1874 

2192 

2598 

1676 

1871 

1905 

1283 

1317 

1423 

2353 

1987 

1596 

1993 

2643 

2054

12/74 

1/77 

11/75 

10/76 

9/75 

9/75 

5/62 

9/74 

12/17 

1/77 

6/74 

1/77 

1/77 

3/74 

7/74 

4/62 

9/74 

9/74 

4/70 

10/74 

11/74 

12/73

Open-- Limestone, dolomite; Paleozoic, 

--do-- Granitoid intrusive; Tertiary, 

--do-- Do. 

--do — Quartzite, argillite; Precambrian. 

--do-- Quartzite; Paleozoic, 

--do-- Metasediment; Precambrian. 

--do — Shale; Cretaceous. 

8/75 Limestone, dolomite; Paleozoic. 

/76 Open — Limestone; Paleozoic, 

--do-- Volcanic flow; Tertiary, 

--do-- Sandstone; Triassic. 

--do-- Sandstone; Tertiary, 

--do— 

— do — Alluvium; Quaternary. 

10/76 Limestone; Paleozoic. 

Open-- Alluvium; Quaternary.

--do-- Do. 

9/73 Sandstone; Jurassic. 

Open-- Sandstone, limestone; Cretaceous. 

3/75 

Open-- Limestone; Paleozoic.

INSTRUMENTATION

Seismometer

Code Type Component TQ (sec) T

Galvo 

g (sec)

Type Magnification _ , •* j. ^ n. Remarks recording at T

AAU, BDU, BPU, 

CPU, DAU, EPU, 

ETU, FPU, GMU, 

HTU, LMU, LTU, 

MCU, (MNU), NSU, 

OGU, PBU, PPU, 

(PTU), (PUU), RBU, 

(RHU), SBU, SQU, 

SUU, (WIU): Mark L-4C- 1.0 Develocorder 200-800 K Telemetered to the University.

314
UTAH--Continued 

Salt Lake City, UT

INSTRUMENTATION-- Cont inued

Seismometer

Code

ANU, (CFU), CWU, 

DCU, HDU, HVU,

MSU, (RFU), SAU,

WHU, AND WMU:

DUG:

TTPTT .

LOG:

QTP •

UBO:

Type

Geotech S-13 ———

Sprengnether- - - -

Wilson-Lamison--

Wood-Anderson---

Wood-Anderson — -

—— do — —— —— ——

Component

Z

Z

Z

Z

,no

,NS

,NS

, no

,NS

NS

NS

,NS

Z

,EW

,EW

,I!iW

,EW

,EW

|EW

,EW

T (sec)

1.

1. 

1.

15.

1. 

1.

6.

1.

1.

1. 

Lon

0

0 

0

0

0 

0

24

0

0 

0

g

Galvo Type 

T (sec) recording

Develocorder

. 75 Photo paper

100.0 —— do ———— 

—— do ————

--- Photo paper

—— do ————

—— do ———— 

—— do ————

—— do ————

—— do —————

Magnification n , 6 T Remarks at L 

o

200-800

70 

200

3

o QAA

200

125

2800

or\ £.Q

2800

600

100

K Do.

K WWSSN.

K Do.

K

K

Timing system: All telemetered stations record WWVB directly. CCU uses a Geotech TG-110. DUG uses WWSSN standard. PCU uses a 

Simplex Model 25. SLC uses a Geotech 19000.

System response curves: DUG—see figure 1, p. 363. Others available from station. 

SHORT HISTORY

CCU is operated by Southern Utah State College for the University of Utah.

UBO was formerly run by AFTAC and was set up like BMO with a 10-station array. Its equipment and array pattern were 

identical to those of BMO.

LOG was owned and operated by the Utah State Agricultural College from 1940 to January 1964 when the University of Utah 

assumed responsibility for the station.

SLU was originally established in 1939 at a slightly different location from the current one.

FGU was operated by USC&GS for the U.S. Bureau of Reclamation until it was given to the University in July 1970.

Stations along the Wasatch Front were supported largely by USGS grants.

315
UTAH 

Albuquerque, NM

GENERAL INFORMATION 

Operated by: 

Address:

Sandia Laboratories

Sandia Laboratories 

Albuquerque, NM 87115

Telephone: 505-264-1468 

Address to obtain records:

As above.

Not generally made available. 

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

LEE Leeds- 37.2431 113.3767 1097 4/63 Open— Chinle Formation (sandstone); 

Late Triassic.

INSTRUMENTATION

Code

LEE

Type

Geotech 18300 ——

Seismometer

Component

7 ft7° 177°

To (sec)

1.0 

1.33 

.8

Galvo Type Magnification _ , 

m r \ ji • ^ m KemarKs T (sec) recording at T 

8 °

0.2 Magnetic tape 

—— do —————— 

—— do ——————

Variable 

—— do —— 

—— do ——

Timing system: IRIG time code imposed at central recording site on the Nevada Test Site. 

System response curves: Not available. 

SHORT HISTORY

This station was a replacement for an earlier station in an unsatisfactory tunnel. It was placed as near as possible in a 

line from the Nevada Test Site to the AFTAC station at Kanab, Utah (KN-UT).

This station is part of a net surrounding the Nevada Test Site. It is used for recording scheduled explosions and does 

not operate all the time. It is controlled remotely from the test site and is sometimes recorded by the USGS in Las Vegas. 

Data are not available to the public.

316
GENERAL INFORMATION

Operated by:

Address:

Telephone: 

Telex:

U.S. Geological Survey for the U.S. 

Bureau of Reclamation

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

303-234-3994 

73-2394

Address to obtain records:

As above. 

SITE INFORMATION

UTAH 

Denver, CO

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

RMU Rainbow Monument- 37.0760 110.9700 1536 2/76 Open--

INSTRUMENTATION

Code

RMU

Seismometer

Type Component T (sec)

Mark L-4C ————————— Z 1.0

Galvo Type Magnification 

T (sec) recording at T

--- Develocorder , --- 

Helicorder.

Remarks

Telemetered to GLD.

Timing system: Sprengnether TG-120. 

System response curve: Uncalibrated. 

SHORT HISTORY

RMU was established to monitor the seismicity near Rainbow Bridge.

317
UTAH 

Denver, CO

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

Engineering Geology Branch 

Stop 903

Box 25046, Denver Federal Center 

Denver, CO 80225

Telephone: 303-234-3818 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

FLA Flat ————————————— •

INSTRUMENTATION

Code Type

All stations Willmore Mark I,- 

modified.

Latitude Longitude 

(deg N.) (deg W.)

— 39.5983 110.3708

--- 39.4700 110.4378 

--- 39.4883 110.3450

--- 39.5767 110.3517

--- 39.4873 110.2417

--- 39.6000 110.3817

Seismometer

Component T (sec)

- —— Z 0.67

Elev Date Date 

(meters) opened closed

2438 1/62 3/77 

1670 1/62 3/77 

2134 1/62 3/77

2118 1/62 3/77 

2182 1/62 3/77 

1981 1/62 12/68

Galvo Type

T (sec) recording

Foundation; geologic age

Sandstone, Colton Formation; Eocene. 

Mancos Shale; Late Cretaceous.

Bluecastle Sandstone Member of Price 

River Formation; Late Cretaceous.

Do. 

Sandstone, Colton Formation; Eocene.

Sandstone, Sunnyside Member of Blackhawk Formation; Late Cretaceous.

Magnification 

at T

0

Remarks

--- Pen and ink, 36 K --- 

magnetic tape.

Timing system: Custom-made clock synchronized with WWV. 

System response curves: Available from station. 

SHORT HISTORY

This network was established to record tremors related to coal-mine bumps in the Sunnyside coal mining district. As 

many as 50,000 tremors of all amplitudes were recorded each year. The instrument system was continually improved until 

November 1976. Records are essentially complete from January 1963 to March 1977.

318
GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

UTAH 

Garland, TX

SITE INFORMATION

Code Station name

Latitude Longitude 

(deg N.) (deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

(BX-UT) Blanding———————————— 37.5633 109.4347 

(FM-UT) Fillmore———————————— 39.2183 112.2069

(KN-UT) Kanab—————————————— 37.0228 112.8275

(VN-UT) Vernal————————————— 40.5086 109.5792 

(WW-UT) Wah Wah Mountains————— 38.5139 113.5889

INSTRUMENTATION

_________Seismometer_____________ 

Code Type Component T (sec)

(BX-UT), (KN-UT),

(WW-UT): Benioff——————— Z,NS,EW 1.0

Sprengnether——- Z,NS,EW 20.0 

(FM-UT), (VN-UT): Benioff——————— Z,NS,EW 1.0

(FM-UT) (2d oper.), 

(KN-UT) (2d oper.),

(WW-UT) (2d oper.): Geotech S-13——— Z,NS,EW 1.0 

Geotech——————— Z,NS,EW 20.0

1707

1890

1737

1768

1829

8/08/63 3/18/64

10/07/61 

3/02/66

12/09/61 

9/26/71

6/10/63 

3/12/66

10/31/69 

11/09/71

10/20/61 6/01/62

4/16/63 

4/23/68

7/15/63 

4/26/68

Sandstone.

Limestone; early Paleozoic.

Sandstone; Mesozoic.

Sandstone. 

Limestone.

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

Magnetic tape, (BX-UT): 400 K

35-mm film. (KN-UT): 380 K

(WW-UT): 300 K

——do———————

——do—————— (FM-UT): 240 K 

(VN-UT): 150 K

Magnetic tape 

—— do——————

Portable system. 

Do.

319
UTAH--Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

320
GENERAL INFORMATION

Operated by:

Address:

Lawrence Livermore Laboratory 

of the University of California

Seismic Research Group, L-42 

Lawrence Livermore Laboratory 

P.O. Box 808 

Livermore, CA 94550

Telephone: 415-447-1100 ext. 3475 

Telex: 34-6407 

Address to obtain records:

As above. 

SITE INFORMATION

UTAH 

Livermore, CA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

KNB Kanab- 37.0166 112.8224 1715 11/68 Open-- Navajo Sandstone; Jurassic and 

Triassic(?).

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

KNB Sprengnether- 20.0 Magnetic tape 100 K Magnification at 1 sec. 

Telemetered to LLL.

Timing system: IRIG time codes B and C synchronized to WWV. 

System response curves: See figure 5, p. 364. 

SHORT HISTORY

This station was originally an AFTAC station. The seismometer is operated as a broadband instrument.

321
GENERAL INFORMATION

Operated by: University of Vermont

Address: Department of Geology 

Perkins Hall 

University of Vermont 

Burlington, VT 05401

Telephone: 802-656-3396 

Address to obtain records:

As above.

No records before 1937. Sporadic records after that time. 

SITE INFORMATION

VERMONT 

Burlington, VT

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BUR Burlington- 44. 4800 73.1971 100 12/32 1956 Compacted glacial clay; 

Pleistocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

BUR Milne-Shaw—- 

SprengnetherN60 W.N30 E 12.0 

Z

Film

Used briefly in the 

1950's.

Timing system: Seth Thomas clock checked daily with WWV. 

System response curves: Not available. 

SHORT HISTORY

BUR was established with a grant-in-aid from the National Research Council. Its operation was intermittent.

322
VERMONT 

Palisades, NY

GENERAL INFORMATION

Operated by:

Address:

Lamont-Doherty Geological Observatory of 

Columbia University

Department of Seismology 

Lamont-Doherty Geological Observatory 

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

Code

(ALV) 

(BRV)

(COV) 

(ESJ)

MTW

Station name

Latitude 

(deg N.)

—— 44.7917

—— 44.5777 

—— 44.5200

___ /. •} QQQ9

Longitude 

(deg W.)

73.0467 

72.6000

73.1458 

73.0317

T1 1 O1 O

Elev 

(meters)

271 

402

85 

213 

i -}/.

Date 

opened

11/76 

10/05/76

11/76 

9/76

-5 /7fl

Date 

closed

Open-- 

10/26/76

Open-- 

11/76

Foundation; geologic age

Underbill Formation; Lower Cambrian(?)

Waits River Formation; Silurian and 

Devonian.

Cheshire Quartzite; Lower Cambrian. 

Pinnacle Formation; Lower Cambrian(?).

and Cady 1 , 1947; Ordovician.

J Kay, G. M., and Cody, W. M., 1947, Ordovician Chazyan classification in Vermont: Science, v. 105, no. 2736, p. 601.

INSTRUMENTATION

Seismometer

Code

(ALV)

(BRV) 

(COV) 

(ESJ) 

MDV

Type

Geospace HS 10-2B----

--do- ————————————

--do —————————————

--do ——————— ————— - 

--do ————— ————— ——

Component T (sec)

Z 0.5

Z .5 

Z .5 

Z .5 

Z .5

Galvo 

T g (sec)

0.2

.2 

.2 

.2 

.2

Type Magnification „ . * F ,. ^ rr Remarks recording at T

Develocorder , 

Helicorder .

--do ——————— 

--do ——————— 

--do —————— - 

--do-- ———— -

3200 K

3200 K

3200 K 

12800 K

Magnification at 20 Hz 1 . 

Telemetered to the

Observatory. 

Do. 

Do. 

Do. 

Do.

] To obtain magnification at 1 Hz, multiply by 7.9 x ]0

-3

Timing system: Sprengnether TS-200.

System response curves: See figure 9, p. 366.

323
VIRGIN ISLANDS 

Palisades, NY

GENERAL INFORMATION

Operated by:

Address:

Lamont-Doherty Geological Observatory 

of Columbia University

Seismology Department

Lamont-Doherty Geological Observatory

Palisades, NY 10964

Telephone: 914-359-2900 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

SJV St. John ------------

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date „ , . , . 

,, ,, s /•,,,•> , ^ j i j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed

Cenozoic.

—— 18.3542 64.9572 —— 6/75 --do-- Do.

Seismometer Galvo Type Magnification ,, ,

Component T (sec) T (sec) recording at T

Timing system: Sprengnether TS-100.

System response curves: See figure 9, p. 366.

SHORT HISTORY

These stations were installed and are being maintained as part of the USGS Earthquake Hazards Reduction Program.

324
VIRGINIA 

Blacksburg, VA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Virginia Polytechnic Institute and State University

Department of Geological Sciences

Virginia Polytechnic Institute and State University

Blacksburg, VA 24061

703-951-6521 (Department)

951-6729 (Station Director)

Address to obtain records:

As above.

SITE INFORMATION

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

Code

BAV 

BLA 

CLT 

KMV 

NAV 

PUV

Station name

--do — —————————

Latitude 

(deg N.)

—— 37.2221

Longitude 

(deg W.)

80.4250 

80.4210 

78.5167 

82.0258 

80.7931 

80.8167

Elev 

(meters)

622 

634 

150 

500 

610 

640

Date 

opened

9/73 

9/04/62 

1973 

1969 

1968 

1968

Date 

closed

Open-- 

Open-- 

1973 

1969 

1968 

1968

Foundation; geologic age

Dolomite; Cambrian. 

Dolomite; Cambrian. 

Metamorphics; Precambrian. 

Clastics; Pennsylvanian. 

Shale; Ordovician. 

Shale; Devonian.

INSTRUMENTATION

Seismometer

Code

BAV: 

BLA:

CLT, KMV, 

NAV, PUV:

Type Component T (sec)

Z 1.0

-- Z,NS,EW 1.0

Galvo Type Magnification 

T (sec) recording at T

--- Pen and ink 2.6 K

.75 Photo paper 50 K, 100 K 

100.0 --do ————— 1.5 K

--- Magnetic tape, --- 

smoked paper.

Remarks

WWSSN. 

Do. 

Non-standard instrument. 

Telemetered to GLD.

Temporary stations; records no longer exist.

Timing system: BLA uses a WWSSN standard system. 

System response curves: Available from station. 

SHORT HISTORY

BAV records are not archived, except for ones containing special-interest events. 

BLA was established with the WWSSN equipment in 1962.

CLT, KMV, NAV, and PUV were established only as temporary stations for the purpose of short-term microearthquake surveys. 

The magnetic tapes and smoked-paper seismograms that recorded their data were not retained. 

Nine additional installations are planned for mid-1978.

325
VIRGINIA 

Charlottesville, VA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Virginia Division of Mineral Resources

Virginia Division of Mineral Resources 

P.O. Box 3667 

Charlottesville, VA 22903

804-293-5121

Address to obtain records:

As above. 

SITE INFORMATION

Code

CTV 

CW

Station name

Latitude 

(deg N.)

—— 38.0326

—— 37.9814

Longitude 

(deg W.)

78.5228 

78.4608

Kiev 

(meters)

264 

167

Date 

opened

7/04/73 

4/74

Date 

closed

1/74 

Open-­

Foundation; geologic age

Rockfish Conglomerate; Precambrian. 

Catoctin Formation; Precambrian.

INSTRUMENTATION

Seismometer

Code Type

CTV Geotech S-13 ——— -

Component To (sec)

1.0 

1.0

T (sec) recording

Heated stylus

-_ do ———————

at T

0

125 K Magnification 52 K in winter.

Timing system: Geotech TG-110 crystal clock. 

System response curves: Available from station. 

SHORT HISTORY

CTV operated for about 6 months, until the station was moved to a temporary site near CW.

CW, the permanent station, began recording on the vertical instrument in late April 1974. The horizontals were added 

in August 1974.

326
VIRGINIA 

Corbin, VA

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

U.S. Geological Survey

Fredericksburg Observatory 

U.S. Geological Survey 

Corbin, VA 22446

703-373-7601

Address to obtain records:

Department of Geological Sciences

Virginia Polytechnic Institute and State University

Blacksburg, VA 24061

SITE INFORMATION

Code

rnw

„. . . Latitude Station name , , „ ,. (deg N.)

r^vX-ir,------------.----- -SB onc;n

Longitude 

(deg W.)

77 -37T3

Elev 

(meters)

in

Date 

opened

1 Q71

Date 

closed Foundation; geologic age

Quaternary.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

CBN Benioff- 1.0 0.2 Pen and ink 50 K

Timing system: Pendulum clock. 

System response curve: Not available. 

SHORT HISTORY

Fredericksburg Observatory is a magnetic observatory run by the Branch of Electromagnetism and Geomanetism of the USGS. 

It maintains the seismometer as a monitor of local events and as a cooperative effort with seismology branches.

327
VIRGINIA 

Harrisonburg, VA

GENERAL INFORMATION 

Operated by: 

Address:

James Madison University

Department of Geology 

James Madison University 

Harrisonburg, VA 22801

Telephone: 703-433-6130 

Address to obtain records:

As above.

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

O O / Q Q Q

Longitude 

(deg W.)

78.8725

Elev 

(meters)

411

Date 

opened

6/71

Date 

closed

Open-­

Foundation; geologic age

Edinburg Formation; Middle Ordovician.

INSTRUMENTATION

Code Type

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

Remarks

HBV Sprengnether- 1.0 Visible 100 K Magnification at 0.8 Hz.

Timing system: Sprengnether TS-200, with a 10-MHz crystal-oscillator frequency standard. 

System response curves: Available from station. 

SHORT HISTORY

The station was started with the installation of the above-mentioned equipment in 1971.

328
GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Washington and Lee University

Department of Geology 

Washington and Lee University 

Lexington, VA 24450

703-463-9111 ext 269

VIRGINIA 

Lexington, VA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date 

(meters) opened

Date 

closed Foundation; geologic age

LEX Lexington- 37.7894 79.4417 311 5/71 1977

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

LEX Sprengnether 3692—— 15.0

Timing system: Not available.

System response curves: Not available.

329
GENERAL INFORMATION 

Operated by: 

Address:

Telephone: 

Telex:

U.S. Geological Survey

U.S. Geological Survey 

Office of Earthquake Studies 

National Center, Stop 905 

12201 Sunrise Valley Drive 

Reston, VA 22092

703-860-6471 

89-9153

Address to obtain records:

As above. 

SITE INFORMATION

VIRGINIA 

Reston, VA

Code

flQR

_. . . Latitude Station name , > (deg N.)

Paot^n_____ _____________ ?R Q/.7Q

Longitude 

(deg W.)

77 QAOA

Elev 

(meters)

1 1 Q

Date 

opened

A/ni /7";

Date 

closed Foundation; geologic age

Late Triassic and Early Jurassic(?).

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

Johnson-Matheson6480A.

1.25 Helicorder 54.7 K

Timing system: Geotech TG-100.

System response curves: Available from station.

SHORT HISTORY

GSR was established when the USGS National Center was built in Reston in 1975. The single short-period instrument serves 

as a public display and can alert the personnel of the Office of Earthquake Studies to major earthquakes.

330
GENERAL INFORMATION 

Operated by: 

Address:

University of Virginia

Rouss Physical Laboratory 

University of Virginia 

University, VA 22901

Telephone: 804-924-3437 

Address to obtain records:

Unknown. 

SITE INFORMATION

VIRGINIA 

University, VA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(CHA) Charlottesville—————— 38.0333 78.5233 150 1927 6/36

INSTRUMENTATION

Code

f fl] A "\

Seismometer Galvo Type Magnification R , ^

Type Component TQ (sec) T (sec) recording at TQ KcmariCo

pendulum.

Timing system: Clock, which kept time to within 0.5 sec. 

System response curve: Not available. 

SHORT HISTORY

Interest in seismology at the University was evidenced by the unique and functional instrument built by Mr. Arthur J. Weed. 

Readings were submitted to the USC&GS and used to determine epicenters.

331
VIRGINIA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(BI-VA)

(CI-VA)

(GD-VA)

(SU-VA)

Station name

Latitude 

(deg N.)

—— 36.8458 

—— 36.6264

—— 37.1936

—— 37.3928

—— 37.7597

Longitude 

(deg W.)

Elev 

(meters)

549

549

Q££

165

Date 

opened

11/07/62

6/01/62 

6/10/65

10/15/62

6/19/65

Date 

closed

f / o Q /£ O

7/23/65

10/27/62

10/05/62

Foundation; geologic age

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo 

Tg (sec)

Type 

recording

Magnification n , 6 Remarks

o

(CG-VA), (CI-VA),

(GD-VA): Benioff——————— Z.NS.EW

(BI-VA), (CG-VA)

(2d oper.): Benioff——————— Z,NS,EW 

Sprengnether—— Z,NS,EW

(SU-VA): Geotech S-13——— Z,NS,EW 

Geotech—————— Z,NS,EW

1.0

1.0 

20.0

1.0 

20.0

Magnetic tape, (CG-VA): 410 K

35-mm film. (CI-VA): 130 K

(GD-VA): 140 K

_- do ——————— (BI-VA): 120 K 

--do--------

Magnetic tape 

--do-------

Portable system. 

Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in I960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

332
GENERAL INFORMATION 

Operated by: 

Address:

WASHINGTON 

Auburn, WA

Telephone:

Address to obtain records:

As above. 

SITE INFORMATION

Gerald Marshall

Gerald Marshall 

35765 26th South 

Auburn, WA 98002

206-838-3578 or 927-4411

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

STT Seattle (Marshall)- 47.4228 122.3137 110 4/64 4/76 Glacial till; Quaternary.

INSTRUMENTATION

Code

STT

Seismometer Galvo Type Magnification „ . ^

Type Component T (sec) T (sec) recording at T

summer to winter.

Timing system: Jewelled timer checked with WWV daily. 

System response curve: Not available. 

SHORT HISTORY

The station was established to study microseisms, using magnifications of as much as 400 K. Continuous recordings were 

made until June 1970 when recordings became intermittent. The station was closed when the property was purchased by the SeattleTacoma Airport.

333
GENERAL INFORMATION 

Operated by: 

Address:

Western Washington University

Geology Department

Western Washington University

Bellingham, WA 98225

Telephone: 206-676-3000 

Address to obtain records:

As above.

Records are not catalogued and may not be complete. 

SITE INFORMATION

WASHINGTON 

Bellingham, WA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

BLL Bellingham- 48.7389 122.4847 96 12/61 1969

INSTRUMENTATION

Code

DT T

Seismometer Galvo Type Magnification

Type Component T (sec) T (sec) recording at T

Timing system: Not available.

System response curve: Not available.

SHORT HISTORY

BLL was operated by Western Washington College of Education, later incorporated into Western Washington University.

334
WASHINGTON 

Newport, WA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey 

Newport Geophysical Observatory 

Rt. 4, Box 56A 

Newport, WA 99156

Telephone: 509-447-3195 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

NEW Newport ————————— •

INSTRUMENTATION

Code Type

NEW Geotech 18300—-

Geotech TS-220--

Latitude Longitude Elev Date Date _ . . . 

t , ,, N /j ti \ t i- N j i j Foundation (deg N.) (deg W.) (meters) opened closed

- —— 48.2633 117.1200 760 6/66 Open— Miocene slates 

strata.

Seismometer Galvo Type Magnification

Component T (sec) T (sec) recording at T

- ——— Z 1.0 0.2 Visible 200 K

- ——— Z,NS,EW 15.0 30.0 --do —— 1000 and 100

- ——— NS.EW .8 —— —do —— 140 K, 14 K, 

1.4 K

; geologic age

with other Tertiary

Remarks

Magnification at 0.05 

Hz. 

Magnification at 5.0 

Hz.

Timing system: Geotech 11880, with a Geotech 5400A backup system. 

System response curves: Available from station. 

SHORT HISTORY

The station began operation in June 1966 under the USC&GS. It is part of the Tsunami Warning System and receives signals 

from a selection of nine other stations throughout the Unites States, telemetered to NEW through the NEIS in Golden, Colo.

335
GENERAL INFORMATION

WASHINGTON 

Seattle, WA

Operated by: University of Washington

Address: Geophysics Department 

202 ATG Building, AK-50 

University of Washington 

Seattle, WA 98195

Telephone: 206-543-6505 

Address to obtain records: 

As above . 

SITE INFORMATION

Code

BDG 

BFW 

BIN 

CBW 

(CHW)

CLW 

CPW 

CRF 

DHW (DYH) 

DVW (DAV) 

(ENT) 

EPW (EPH) 

ETP 

EUW (EUK) 

FMW 

FPW 

FTW 

GBL 

GHW 

GMW 

GSM 

HTW 

iru

Station name

Colville — —— — —— —

Dyer Hill —— —— — ——

Latitude 

(deg N.)

—— 46.4867

—— 48.0074

—— 47.8071 

—— 47.8692

—— 46.9738

If OO C O

—— 47.9605

—— 47.6789

—— 46.4648

—— 46.3958

—— 46.9317

—— 47.9667

—— 47.8767

—— 46.5977

—— 47-0417 

—— 47.5479

—— 47.8035 

-_- /, Q i a Q s

Longitude 

(deg W.)

119.3175 

123.2148 

122.9718 

120.0327 

120.0333

117.8820 

123.1363 

119.3877 

119.7693 

118.2260 

120.2300 

119.5962 

119.0590 

118.5621 

121.6720 

120.2129 

122.2014 

119.4598 

122.2725 

122.7863 

121.7945 

121.7691 

101 QOQC;

Elev 

(meters)

475 

902 

585 

1160 

790

585 

792 

190 

850 

717 

550 

628 

219 

367 

1890 

352 

147 

330 

268 

506 

1305 

829

£1£

Date 

opened

3/69 

10/25/72 

7/02/70 

6/75 

5/73

6/75 

7/29/70 

7/70 

6/75 

6/75 

11/76 

6/75 

3/69 

6/75 

9/04/72 

6/75 

9/24/75 

3/69 

9/24/75 

2/27/70 

6/11/70 

6/11/75

O /I Q /71

Date 

closed

Open— 

--do— 

— do—

— do— 

6/75

11/76 

Open— 

--do—

--do— 

--do —

--do — 

— do— 

— do— 

— do— 

— do—

— do— 

— do— 

— do— 

— do— 

— do— 

~do— 

— do—

,-A^--

Foundation; geologic age

Basalt; Miocene. 

Volcanics; Eocene. 

Do. 

Gneiss; pre-Jurassic.

Metamorphic gneissic migmatite; 

Mesozoic.

Metamorphics; Cambrian. 

Volcanics; Eocene. 

Basalt; Miocene. 

Do. 

Do. 

Do. 

Do. 

Do. 

Do. 

Volcanics; Quaternary. 

Gneiss; pre-Jurassic. 

Glacial material; Quaternary. 

Basalt; Miocene. 

Glacial material; Quaternary. 

Volcanics; Eocene. 

Volcanics; Oligocene, Miocene. 

Volcanics; Eocene.

336
SITE INFORMATION—Continued

WASHINGTON—Continued 

Seattle, WA

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

(LLB) 

LMW 

LON 

LYW 

MBW 

MCW 

MOW 

ODS 

OHW

OMW (OMK) 

OTH

PRW (PRO) 

RMW 

RSW 

SAW 

SCW

SEA 

SHW 

SMW 

SPW 

STW 

SYR 

TUM 

VTG 

WAH 

(WAT) 

WBW 

WGW 

WIW

WNW (WEN) 

WRD

Labor Lookout——————- 48

Ladd Mountain— —— — — - 46

Longmire-------- —— — - 46

Lyman- —— — ____ —— _____ 43

Mt. Baker—————————— 4»

Mt. Constitution————- 48

Midway-—-------------- 45

Odessa ———————— ———— 47

Oak Harbor————————— 48

Omak—————————————— 48

Othello———————————— 46

Prosser- —— - —— —— —— 46

Rattlesnake Mountain—— 47

Rattlesnake Hills———— 46 

St. Andrews- — -———•

Sherman Crater- 

(Mt. Baker).

Seattle— — — —

Mt. St. HelensSouth MountainSeward Park- — - 

Striped Peak—- 

Smyrna----——-

Tumwater—-----

Vantage--------

Wahluke————— 

Waterville-—— 

Wilson Butte—— 

Wallila Gap——- 

Wooded Island— 

Wenatchee———- 

Warden——- —— --

47

48

47

46

47

47

48,

46

47

46

46

47

48

46,

46.

47. 

46,

.7682 

.6680 

.7500 

.5353 

.^840 

.6797 

.6133 

.3067 

.3233 

.4803 

.7390 

.2127 

.4597 

.3912 

.7017 

.7675

.6550

.1925

.3195

.5537

.1502

.8630

.0150

.9580

.7520

.6986

.0178

.0447

.4322

.5295

.9698

121.8160

122.2913

121.8100

122.1017

121.8997

122.8323

119.7608

118.7450

122.5318

119.5608

119.2165

119.6858

121.8053

119.5887

119.4010

121.8167

122.3083

122.2367

123.3417

122.2459

123.6700

119.6178

122.9083

119.9873

119.5780

119.9542

119.1372

118.9327

119.2882

120.1942

119.1433

3010

1195

854

107

1676

693

372

524

54

421

384

552

1024

1037

704

2990

30

1423

840

8

308

268

83

208

231

820

826

162

122

1061

379

8/08/75 Open—

6/30/75 —do—

3/12/58 —do—

4/16/75 —do—

11/08/72 —do—

11/08/72 —do—

3/69

3/69

5/16/75 Open—

6/75

3/69

6/75

7/27/71

7/70

6/75

—do—

—do—

—do—

—do—

—do—

—do—

3/31/75 10/01/76

1906 11/01/70 

10/25/72 Open— 

3/24/75 —do— 

9/17/69 —do— 

6/27/73 —do— 

3/69 —do— 

5/58 —do— 

7/70 —do— 

7/70 — doll/76 —do— 

6/75 —do— 

10/71 —do— 

7/70 — do— 

6/75 —do— 

7/70 — do—

Volcanics; Quaternary. 

Volcanics; Eocene. 

Andesite; Quaternary 

Sandstone; Cretaceous. 

Volcanics; Quaternary. 

Metagraywacke; Carboniferous. 

Basalt; Miocene.

Do.

Glacial till; Pleistocene. 

Gneiss; pre-Jurassic. 

Basalt; Miocene.

Do.

Volcanics; Eocene, Oligocene. 

Basalt; Miocene.

Do. 

Volcanics; Quaternary.

Vashon till; Pleistocene. 

Volcanics; Quaternary. 

Volcanics; Eocene. 

Sandstone; Oligocene. 

Volcanics; Eocene. 

Basalt; Miocene. 

Volcanics; Eocene. 

Basalt; Miocene.

Do.

Do.

Do.

Do.

Do.

Sandstone; Miocene, Pliocene. 

Balsalt; Miocene.

337
WASHINGTON— Continued

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

CBW, VTG --do ————————————— Z,NS 1.0 

CHW: Geotech S-13 —————— Z 1.0

LON: Benioff —————————— Z,NS,EW 1.0

SEA: Bosch-Omori ——————— NS.EW 15.0

TUM: Geotech S-13 —————— Z,NS,EW 1.0

Geotech SL-210 ————— Z 15.0

Geotech SL-220 ————— NS.EW 15.0

Seattle, WA

Galvo Type Magnification 

T (sec) recording at TQ

16 Hz 16-mm film BFW: 150 K

BIN: 115 K

CPW: 135 K

FMW: 100 K

GMW: 145 K

GSM: 165 K

JCW: 120 K

MCW: 70 K

RMW: 190 K

SHW: 45 K

SPW: 65 K

f r\ v

.75 Photo paper 100 K

100.0 --do ————— 1.5 K

--- Smoked paper — -

90.0 --do —————— 1 K 

90.0 --do —————— 850

Remarks

WWSSN. 

Do.

——

Timing system: Most stations use an Astrodata Time Code Generator and WWVB. LON uses the WWSSN standard. TUM uses a Simplex 

quartz crystal clock.

System response curves: LON—see figure 1, p. 363. All Mark L-4C and Geotech S-13 instruments except TUM—see figure 11, p. 366. 

TUM—available from station.

SHORT HISTORY

BDG, CRF, ETP, GBL, MDW, ODS, OTH, RSW, SYR, VTG, WAH, WGW, WIW, and WRD make up the Hanford network. This network was 

supported by U.S. Department of Energy and was originally run by the USGS out of its Menlo Park office, until the entire network 

was transferred to the University in June 1975.

LON began operating the WWSSN equipment on August 22, 1962.

SEA records from 1906 to 1931 are not at the University. Records since 1931 are on file.

The stations in the Puget Sound area are supported by USGS grants.

Publications from the University include a quarterly hypocenter listing and an annual hypocenter listing.

338
WASHINGTON 

Spokane, WA

GENERAL INFORMATION 

Operated by: 

Address:

Mount Saint Michael's

Seismograph Station 

Mount Saint Michael's 

Spokane, WA

Address to obtain records:

Unknown. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude 

(deg N.) (deg W.)

—— 47.7300 117.3422

Seismometer

Component T (sec)

Elev Date Date „ , . . , . 

, . . , , , Foundation; geologic age (meters) opened closed

713 1909 1969 Basalt.

Galvo Type Magnification Remarks

T (sec) recording at T

Timing system: Wiechert clock.

System response curves: Not available.

SHORT HISTORY

The station initially began operating at Gonzaga University and then moved to Mount Saint Michael's in 1930. Gonzaga 

University published a yearly bulletin.

339
GENERAL INFORMATION 

Operated by:

Address: 

Telephone:

Tera Corporation for

Portland General Electric Company

Tera Corporation 

2118 Milvia Street 

Berkeley, CA 94704

415-845-5200

Address to obtain records:

Stuart W. Smith 

Geophysics Program 

202 ATG Building, AK-50 

University of Washington 

Seattle, WA 98195

WASHINGTON 

Berkeley, CA

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date

f , „ s ,,,, •> , ^ \ j -i j (deg N.) (deg W.) (meters) opened closed

_ , . , Foundation; geologic age

AID 

RPK

Alter RidgeRoosevelt---

45.8194

45.7617

120.0667

120.2306

427

549

11/75 Open-- 

11/75 --do-­

Basalt; Miocene. 

Basalt; Miocene.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

ALD Mark L-4C- 1.0

1.0

Helicorder Variable Gain adjusted seasonally.

Telemetered to Arlington, 

OR.

--do------ --do---- Do.

Timing system: Sprengnether clock checked with WWVB daily.

System response curves: Curves slightly different from standard Mark L-4C microseismic system (fig. 2); peak at 5 Hz.

SHORT HISTORY

The stations are in an area where no other seismometers exist and where seismicity is low. Portland General is 

interested in being able to precisely locate occasional earthquakes when they do occur.

340
WASHINGTON 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(CC-WA) 

(CE-WA) 

(EL-WA) 

(GC-WA)

(MU-WA) 

(PH-WA) 

(TK-WA) 

(YA-WA)

Station name

Latitude Lonj 

(degN.) (dej

. ———— 47.7692 121,

. ———— 46.9242 120,

/ O 1 £ O O TOT

- ———— 48.6475 122.

. ———— 48.9167 121.

. ———— 46.3236 117,

. ———— 46.5000 119,

>itude

> W.)

.0836 

.6872 

.7300 

.2822 

.2028 

.9103 

.3281 

.5878 

.9200

Elev Date Date Foundation; geologic age 

(meters) opened closed

1036 11/08/67 7/29/68 Granodiorite. 

274 10/15/62 10/27/62 

975 5/28/62 6/28/62 

671 11/08/62 12/12/62 

122 11/08/67 12/10/67 

732 9/26/62 10/05/62

945 11/08/67 12/10/67 

549 8/21/63 5/17/64 Granite. 

610 1/29/63 3/29/63

INSTRUMENTATION

Code

(CC-WA) , 

(TK-WA) :

(CE-WA), 

(GC-WA) , 

(YA-QA) :

(CC-WA),

Type

(PH-WA) , 

BenioffSprengn<

(EL-WA) , 

(MU-WA) , 

Benioff-

(LY-WA) : Geotech

Seismometer

Component

sther —— Z,NS,EW

S-13 —— Z.NS.EW 

--------- 7 HC ru

To (sec)

1.0 

20.0

1.0

1.0 

on n

Galvo Type Magnification Remark*

T (sec) recording at T

Magnetic tape, (TK-WA): 200 K 

35-mm film.

--do ———————

--do —————— (CE-WA): 200 K 

(EL-WA): 160 K 

(GC-WA) : 60 K 

(MU-WA): 110 K

—— Magnetic tape (CC-WA): 350 K Portable system.

341
WASHINGTON—Continued 

Garland, TX

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance).

System response curves: See figure 3, p. 364.

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

342
GENERAL INFORMATION

Operated by: U.S. Geological Survey

Address: U.S. Geological Survey

National Center for Earthquake Research 

345 Middlefield Road 

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2571 

Address to obtain records:

Records through 1974 on file as above.

Records from 1975 are at the University of Washington. 

SITE INFORMATION

WASHINGTON 

Menlo Park, CA

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

(B) Badger Mountain—————— 46.2347 119.3175

(DA) Basin City—————————— 46.6032 119.1120

(CA) Berg Ranch—————————— 46.7222 119.3472

CNL (C) Connel————————————— 46.6530 118.9170

(EA) Coyote Rapids———————— 46.6388 119.6202

(AA) Hatton————————————— 46.7468 118.8242

HSW (H) Hot Spot———————————— 46.5295 119.5545

LSW (D) Landslide——————————— 46.4813 119.2453

(AB) Saddle Mountain—————— 46.7955 119.4913

(N) Sentinel Gap————————— 46.7855 119.9222

(Y) Yakima Ridge————————— 46.5123 119.7155

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

All stations Mark L4-C———------- z 1.0

475

237

287

293

149

351

217

262

570

189

361

6/69

6/71

6/71

6/70

6/71

6/71

6/70

6/70

10/72

6/71

10/71,

2/75

2/75

2/75

2/75

2/75

10/72

10/71

10/71

2/75

2/75

2/75

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

Develocorder Telemetered to Menlo Park.

Timing system: WWVB recorded directly with a custom-chronometer backup. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

These stations are part of the Hanford array, run by the USGS from 1969 to 1975. In 1975 the above stations were 

discontinued and the rest of the network was given to the University of Washington.

343
GENERAL INFORMATION

Operated by:

Address:

U.S. Coast and Geodetic Survey for 

the U.S. Bureau of Reclamation

U.S. Coast and Geodetic Survey

Washington, B.C.

(Obsolete)

Address to obtain records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

WASHINGTON 

Washington, DC

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed Foundation; geologic age

GCW Grand Coulee- 47.9414 118.9800 462 1941 1949 Granite.

INSTRUMENTATION

Code Type

Seismometer

Component T (sec)

Galvo Type Magnification 

T (sec) recording at T

Remarks

GCW Benioff- Z,NS,EW 1.5 35-mm film

Timing system: Chronometer with WWV automatically checked several times a day. 

System response curves: Not available.

344
GENERAL INFORMATION 

Operated by: 

Address:

West Virginia University

Seismograph Station

213 College of Mineral and Energy Resources 

White Hall West Virginia University 

Morgantown, WV 26506

Telephone: 304-293-5695 

Address to obtain records:

As above. 

SITE INFORMATION

WEST VIRGINIA 

Morgantown, WV

Code

MPC

„. . . Latitude Station name ,, „ , (deg N.)Longitude 

(deg W.)

7 Q Q t; /. /.

Elev 

(meters)

->Q9

Date 

opened

i n /t;n

Date 

closed Foundation; geologic age

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo 

T (sec)

Type Magnification 

recording at T

Remarks

MGR Sprengnether- Z,NS,EW 1.5 1.5 Photo paper 5 K, 3 K, 3 K Z component also recorded on a pen-and-ink 

recorder.

Timing system: Standard Electric pendulum clock. 

System response curves: Available from station. 

SHORT HISTORY

MGR has operated continuously since 1950 with hiatuses during the summer months. The station publishes a semiannual 

report.

345
WEST VIRGINIA 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code

(BL-WV) 

(FN-WV)

(PE-WV) 

(RN-WV)

Station name

Latitude 

(deg N.)

—— 37.7989

—— 38.5494 

—— 37.6147

—— 38.0764

Longitude 

(deg W.)

81.3100 

79.5131

81.6653 

80.8483

Elev 

(meters)

610 

750

427 

853

Date 

opened

12/13/61 

5/31/66

5/04/64 

6/03/65 

5/27/75

7/06/62 

12/31/62

, Foundation; geologic age

7/23/65 Sandstone, limestone, and shale; 

6/03/66 Paleozoic.

8/28/64 Alluvium. 

11/12/65 

7/28/76

7/17/62 

5/16/63

INSTRUMENTATION

Seismometer

Code

(BL-WV), (FN-WV) 

(2d oper. ) , 

(RN-WV) :

(FN-WV) (1st

r>nov 1 fPT?-LAA •

Type

Sprengnether----

Component T (sec)

Z,NS,EW 1.0 

Z,NS,EW 20.0

7 we PU i r\

Galvo Type 

T (sec) recording

--- Magnetic tape, 

35-mm film. 

—— do — — —— —

Magnification 

at T

0

(BL-WV): 65 K 

(RN-WV): 150 K

rTTH-LAM • ^ 7fl V

Remarks

——

(BL-WV) (2d oper.),

(FN-WV) (3d oper.): Geotech S-13—— Z,NS,EW 1.0 

Geotech——————— Z,NS,EW 20.0

(PE-WV): 140 K

Magnetic tape (BL-WV): 65 K Portable system, 

---do——----- --- Do.

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

346
WISCONSIN 

Madison, WI

GENERAL INFORMATION 

Operated by: 

Address:

University of Wisconsin at Madison

Department of Geology and Geophysics 

University of Wisconsin 

1215 W. Dayton Street 

Madison, WI 53715

Telephone: 608-262-8960 

Address to obtain records:

WWSSN records:

National Geophysical and Solar-Terrestrial Data Center 

NOAA/EDS, D62 

Boulder, CO 80302

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date _ . . , 

, . „ ,. f,,,^ , ^ j -, j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed ' 8 6 8

Seismometer Galvo Type Magnification _ , ^

Component T (sec) T (sec) recording at T

0 g 0

- ———— Z,NS,EW 1.0 0.75 Photo paper 100 K WWSSN.

- ———— Z,NS,EW 15.0 100.0 —— do ———— 750 Do.

Timing system: WWSSN standard.

System response curves: See figure 1, p. 363.

SHORT HISTORY

MDS began operation with the installation of the WWSSN equipment.

347
GENERAL INFORMATION 

Operated by: 

Address:

University of Wisconsin at Milwaukee

Department of Geological Sciences 

Sabin Hall

University of Wisconsin 

Milwaukee, WI 53201

Telephone: 414-963-4561 

Address to obtain records:

As above. 

SITE INFORMATION

WISCONSIN 

Milwaukee, WI

Code 0 . . . Latitude Station name , , ... (deg N.)

Longitude 

(deg W.)

Elev 

(meters)

Date 

opened

Date 

closed Foundation; geologic age

UWM University of Wisconsin- 43.0794 

at Milwaukee.

87.8784 204 9/72 Open-- Glacial till (Pleistocene) overlying

the Milwaukee Formation (Middle 

Devonian).

INSTRUMENTATION

Code

UWM

Seismometer

Type Component

Benioff 4681, 6102A-- Z,NS,EW

Geotech SL-210, ———— Z,NS,EW 

SL-220.

Geotech 7505A —————— Z

T0 (sec)

1.0

20.0

30.0

Galvo Type Magnification Remarks

T (sec) recording at T

—— Pen and ink 20.5 K ——

—— do ———

Timing system: Geotech TG-110 and Sprengnether TS-250. 

System response curves: Not available. 

SHORT HISTORY

UWM started with the installation of the Benioff 4681. The three-component Geotech instruments were added in August 1973. 

The horizontal Benioff's were added in September, 1976, and the extra-long-period Geotech was added in May 1977.

348
WISCONSIN 

Milwaukee, WI

GENERAL INFORMATION 

Operated by: 

Address:

Marquette University

Seismological Station 

Department of Physics 

Marquette University 

Milwaukee, WI 53233

Telephone: 414-224-7700 

Address to obtain records:

Unknown. 

SITE INFORMATION

Code Station name

MLW Milwaukee ——————— -

INSTRUMENTATION

Code Type

MLW Wiechert ———— -

Latitude Longitude Elev Date Date ,, , . -. , 

, , ., ^ /-J ,7 \ t ._ \ j i j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed 6 e &

Seismometer Galvo Type Magnification _ ,

Component T (sec) T (sec) recording at T

0 g 0

. ———— NS,EW 6.1, 5.4 —— —— 51, 61

Timing system: Not available.

System response curves: Not available.

SHORT HISTORY

MLW was a member of the Jesuit Seismological Society.

349
WISCONSIN 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561 

Telex: 73-2394 

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

Code Station name

(BA-WS) Baldwin ————————— -

(CF-WS) Colfax —————————— - 

(CN-WS) Cornell ————————— -

(MF-WS) Medford ————————— -

(NG-WS) Niagra ————————— -

(RL-WS) Rib Lake ———————— -

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed

• —— 45.6967 88.1422 381 6/06/62 10/05/62

• —— 44.8994 92.2722 335 10/11/62 10/27/62

• —— 45.0942 91.7664 366 11/04/62 12/12/62

• —— 45.1928 91.1281 320 5/10/62 6/28/62

• —— 43.3475 90.5897 412 12/22/62 4/01/63

• —— 45.7575 88.1492 396 11/19/61 5/26/62 

10/13/62 6/14/63

- —— 45.3081 90.0986 472 4/10/63 5/13/63

Seismometer Galvo Type

Component T (sec) T (sec) recording

35-mm film.

Foundation; geologic age

Granite gneiss; Precambrian. 

Glacial till.

Magnification

at T 

o

(AR-WS): 160 K 

(BA-WS): 60 K 

(CF-WS): 140 K 

(CN-WS): 290 K 

(MF-WS): 130 K 

(NG-WS): 70 K 

(RL-WS): 170 K

Remarks

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

350
WYOMING 

Laramie, WY

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

University of Wyoming

Department of Geology 

University of Wyoming 

Laramie, WY 82070

307-766-1121

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

INSTRUMENTATION

Code Type

Latitude Longitude Elev Date Date ,, , . . , . 

,. „, /j t, \ / -> j i j Foundation; geologic age (deg N.) (deg W.) (meters) opened closed 6 6 6

Seismometer Galvo Type Magnification „ , n

Component T (sec) T (sec) recording at T

- ———— Z,NS,EW 1.0 —— Photo paper 90 K

Timing system: Simplex quartz clock. 

System response curves: Not available. 

SHORT HISTORY

LAR was started as a result of interest in a local earthquake and the. fortuitous availability of seismic equipment.

351
WYOMING 

Berkshire, England

GENERAL INFORMATION

Operated by:

Address:

Procurement Executive, Ministry of Defence, 

United Kingdom

Procurement Executive, Ministry of Defence 

Blacknest, Brimpton, North Reading 

Berkshire, England

Telephone: Tadley 4111 ext. 7260 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

PMW Pole Mountain — —— ——

Latitude 

(deg N.)

—— 41.2100

Longitude 

(deg W.)

105.3347

Elev 

(meters)

2440

Date 

opened

12/08/61

Date 

closed

8/63

Foundation; geologic

Sherman Granite, batholith

age

; Precambrian

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

PMW Willmore MK II- 1.0 Magnetic tape Thirteen elements in an 

array Dec. 1961-Sept. 

1962. Fourteen elements 

in an array Sept. 1962- 

Aug. 1963.

Timing system: AWRE (T9601).

System response curve: Not available.

SHORT HISTORY

PMW was the first operational large-aperature United Kingdom-type linear-cross array. It was installed for observation of 

the "Gnome" underground explosion at a 1000-km range and for studies of capability for recording underground explosions at 

teleseismic ranges. The array initially used Willmore MK I's and switched to the II's on December 16, 1962.

352
WYOMING 

Garland, TX

GENERAL INFORMATION 

Operated by: 

Address:

Teledyne Geotech

Teledyne Geotech 

3401 Shiloh Road 

Garland, TX 75041

Telephone: 214-271-2561

Telex: 73-2394

Address to obtain records:

Teledyne Geotech 

Seismic Data Analysis Center 

314 Montgomery Street 

Alexandria, VA 22314

SITE INFORMATION

_ , _. . . Latitude Longitude Elev Date Date „ , . ___i „•„ ,„„ Code Station name ,, ., , ,, 6 ,. , , . >. , , , Foundation; geologic age (deg N.) (deg W. ) (meters) opened closed

(CY-WY) Cheyenne ———————————— 41.4167 104.8600

(HK-WY) Hawk Springs ————————— 41.6958 104.3569

(PI-WY) Pinedale ———————————— 42.4528 109.5486

(PI2WY) —do ——————————————— 42.7672 109.5619

(PM-WY) Pole Mountain ———————— 41.2075 105.3608

(TL-WY) Thermopolis ————————— 43.3917 108.0881

INSTRUMENTATION

Seismometer

Code Type Component T (sec)

(CY-WY), (HK-WY),

(PI2WY): Benioff ——————— Z,NS,EW 1.0 

(PI-WY), (PM-WY),

(TL-WY): Benioff ——————— Z,NS,EW 1.0 

Sprengnether---- Z,NS,EW 20.0

1920 7/06/62 7/11/62 

1494 7/17/62 10/05/62 

2170 1/22/64 4/29/64 Sandstone. 

2195 3/01/65 4/26/65 

2469 11/25/61 7/10/63 Granitic basement; Precambrian. 

1615 11/08/67 12/10/67

Galvo Type Magnification Remarks 

T (sec) recording at T

Magnetic tape, (CY-WY): 110 K 

35-mm film. (HK-WY): 50 K 

(PI2WY): 350 K

—— do ——————— (PI-WY): 280 K 

(PM-WY): 150 K 

—— do ———————

Timing system: Geotech crystal clock checked with WWV (50-msec tolerance). 

System response curves: See figure 3, p. 364. 

SHORT HISTORY

The LRSM program began in 1960 as part of the VELA-Uniform project. It continued until 1971, when it was replaced by the 

Special Data Collection System program which remains active. Work under these programs has been directed towards advancing the 

seismic-detection, identification, and location techniques necessary to detect and identify underground nuclear explosions. 

All work is accomplished under the technical direction of AFTAC, Vela Seismic Center, in Alexandria, Va.

353
GENERAL INFORMATION

Operated by:

Address:

U.S. Geological Survey for 

El Paso Natural Gas Co.

U.S. Geological Survey 

3060 S. Highland Drive 

Las Vegas, NV 89102

Telephone: 702-734-3416 

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

WYOMING

Las Vegas, NV

SITE INFORMATION

Code Station name

Latitude Longitude Elev Date Date 

(deg N.) (deg W.) (meters) opened closed

Foundation; geologic age

PI1 Pinedale———————————— 42.5953 109.5453

PI2 ——do—————————————— 42.7667 109.7400

PI3 ——do—————————————— 42.4417 109.5792

PI4 ——do—————————————— 42.6283 109.8933

PIS ——do—————————————— 42.5671 109.9117

PI6 ——do—————————————— 42.7262 109.6055

PI7 ——do—————————————— 42.4397 109.5725

PIN ——do—————————————— 42.5825 109.7167

INSTRUMENTATION

_____________Seismometer_____________ 

Code Type Component T (sec)

All stations Mark L-4C------------ Z 1.0

2195

2234

2164

2194

2273

2225

2179

2225

6/08/73

8/13/73

10/18/73

12/11/73

3/74

3/74

3/74

3/22/73

8/13/73

10/18/73

12/11/73

2/22/74

6/01/76

6/01/76

6/01/76

6/08/73

Granite. 

Alunite.

Galvo 

T (sec)

Type 

recording

Magnification 

at T

Remarks

Develocorder Telemetered to GLD.

Timing system: Timing added in Golden. 

System response curves: See figure 2, p. 363. 

SHORT HISTORY

The network was installed to monitor the seismicity in the area of the Wagon Wheel drill site, which has as its objective 

the extraction of natural gas by use of explosives. The stations were telemetered through Boulder, Colo., and then to Las Vegas 

until March 1974; the data obtained in Las Vegas were used in USGS Open-File Report 74-30, 1974, written by K. C. Bayer and 

G. M. Wuollet.

354
WYOMING

Menlo Park, CA

GENERAL INFORMATION 

Operated by: 

Address:

U.S. Geological Survey

U.S. Geological Survey

National Center for Earthquake Research

345 Middlefield Road

Menlo Park, CA 94025

Telephone: 415-323-8111 ext. 2571 

Address to obtain records:

As above. 

SITE INFORMATION

Code Station name

Latitude 

(deg N.)

Longitude 

(deg W.)

Elev Date Date 

(meters) opened closed Foundation; geologic age

CJW (YPCJ) Canyon Junction————— 44.7438 110.4975 2426 10/74 Open—

MHS (YPMH) Mammoth Hot Springs—— 44.9770 110.6853 1781 1964 10/74

MJW (YPMJ) Madison Junction———— 44.6483 110.8587 2111 1964 Open—

MVW (YPMV) Mud Volcano———————— 44.6272 110.4458 2400 10/72 --do—

NJW (YPNJ) Norris Junction————— 44.7303 110.6930 2290 10/72 --do—

WTW (YPWT) West Thumb————————— 44.4145 110.5712 2365 10/72 —do—

(CJ) Canyon Junction————— 44.7438 110.4975 2395 1964 1965

(LJ) Lake Junction—————— 44.5660 110.4012 2440 1965 1968

(YPEE) East Entrance—————— 44.1363 110.6667 2134 10/74 10/76

(YPLK) Lake Junction—————— 44.5660 110.4012 2399 10/74 10/76

(YPMC) Maple Creek———————— 44.7593 111.0062 2073 10/74 Open—

(YPML) Mary Lake————————— 44.6028 110.6063 2519 10/74 --do—

(YPNG) Natural Bridge—————— 44.5245 110.4593 2390 10/74 —do—

(YPOF) Old Faithful——————— 44.4525 110.8413 2260 10/72 --do—

(YPPC) Pelican Cone——————— 44.6483 110.1930 2939 10/74 --do-

(YPPR) Promontory————————— 44.3923 110.2863 2390 10/74 10/76

(YPSE) South Entrance—————— 44.1363 110.6667 2073 10/74 10/76

(YPSG) Silver Gate———————— 45.0030 109.9875 2270 1/73 Open--

(YPTC) Trail Creek———————— 44.2965 110.2320 2360 8/73 --do—

355
INSTRUMENTATION

WYOMING—Continued 

Menlo Park, CA

Code

Seismometer

Type Component T (sec)

Galvo Type 

T (sec) recording

Magnification 

at T

Remarks

(CJ), (LJ):

CJW, NJW, 

(YPEE), (YPMC), 

(YPPC), (YPPR), 

(YPSE), (YPSG), 

(YPTC):

MHS:

MJW, MVW, 

WTW, (YPLK), 

(YPML), (YPNB), 

(YPOF):

EV-17-

Mark L4-C————— Z 

Lehner-Griffith- Z,NS,EW

Mark L4-C- Z,NS

1.25

1.0 

1.25

1.0

Photo paper

Develocorder 

_- do ——————

-doTiming system: WWVB recorded directly with a custom-chronometer backup.

System response curves: See figure 2, p. 363 for short-period vertical instruments.

SHORT HISTORY

CJW operated for about one year (1964-65) at a slightly different locations than the current CJW site. 

MHS and MJW have operated intermittently since their installation. 

MVW has been located in two different locations but less than 1 km apart.

IDA, Idaho Array (43.7867° N., 113.0225° W., elevation 1524 m), was one of six stations run on a part-time basis; they were 

telemetered to Menlo Park after working hours and recorded on Develocorder. This array ran from December 1968 to August 1969. 

Many of these stations have also been recorded on magnetic tape at various times, and these records are also available. 

Short-term networks in the area of Yellowstone National Park have been established for special studies:

June 30-July 19, 1975: A 20-element array of short-period vertical instruments recorded on photo paper. Code names 

begin with YA, YD, and YL.

August 20-October 20, 1965: Five short-period vertical instruments rotated between nine locations and recorded on 

magnetic tape.

Older data (before 1972) may not be complete in the archives.

356
WYOMING 

Patrick AFB, FL

GENERAL INFORMATION 

Operated by: 

Address:

Telephone:

U.S. Air Force

1035th Technical Operations Group

AFTAC/TGS

Patrick AFB, FL 32925

305-494-2291

Address to obtain records:

U.S. Geological Survey

Branch of Global Seismology

Stop 967

Box 25046, Denver Federal Center

Denver, CO 80225

SITE INFORMATION

Code

BDW (U4) 

WYO (U6)

Station name

Latitude 

(deg N.)

—— 42.7762

—— 42.7778

Longitude 

(deg W.)

109.5683 

109.5556

Elev 

(meters)

2198 

2182

Date 

opened

6/20/77 

6/20/77

Date 

closed

Open-- 

--do--

Foundation; geologic age

——

INSTRUMENTATION

Code

BDW

LTVn

Seismometer Galvo Type Magnification

Type Component T (sec) T (sec) recording at T

Geotech 23900 —————— Z 1.0 —— Develocorder , 1000 K, 500 K 

Helicorder.

n«

magnetic tape.

Geotech 7505A, 8700C- Z,NS,EW 17.0 110.0 --do —— —— —— Do.

Timing system: Time added at GOL.

System response curves: Available with records.

SHORT HISTORY

BDW is 1 element of a 13-element array, of which WYO is the center. WYO records a summed analog signal using all the 

elements of the array.

The Wyoming array is operated by the U.S. Air Force; the USGS began telemetering in June 1977.

357

APPENDIXES

Appendix 1. —List of organizations that operate stations in more than one state

Organization name

Arizona:

Los Alamos Scientific Laboratory, Chinle

Air Force Technical Applications Center, Payson

California:

University of California, Berkeley

U.S. Geological Survey, Menlo Park

California Institute of Technology and the

U.S. Geological Survey, Pasadena 

Lawrence Livermore Laboratory, Livermore

Connecticut:

University of Connecticut, Groton

Colorado:

University of Colorado, Boulder

U.S. Geological Survey, Denver

Maryland;

National Earthquake Information Center, Rockville

Massachusetts:

Massachusetts Institute of Technology, Cambridge

Weston Observatory, Weston

Michigan:

University of Michigan, Ann Arbor

Missouri:

Saint Louis University, St. Louis

States

Arizona, New Mexico 

Arizona, Oklahoma

California, Nevada

California, Colorado, Idaho, Montana, Nevada,

Washington, Wyoming, Arkansas

Arizona, California 

California, Nevada, Utah

Connecticut, Rhode Island

Alaska, Colorado

Arizona, Colorado, South Carolina, Texas, Utah

District of Columbia, Maryland

Massachusetts, New Hampshire 

Maine, Massachusetts, New Hampshire

Michigan, Ohio

Arkansas, Illinois, Kentucky, Missouri, 

Tennessee

Nevada:

University of Nevada, Reno

New Mexico:

Sandia Laboratories, Albuquerque

New York:

Lamont-Doherty Geological Observatory, Palisades

Oregon:

Portland General Electric Company, Portland

Texas:

Teledyne Geotech, Garland

Utah:

University of Utah, Salt Lake City

Washington:

U.S. Geological Survey, Newport

University of Washington

California, Nevada

California, Nevada, New Mexico

Alaska, California, New Jersey, New York, 

Pennsylvania, Puerto Rico, Utah, Virgin Islands

Oregon, Washington

Alabama, Alaska, Arizona, Arkansas, California, 

Colorado, Florida, Georgia, Hawaii and the 

Pacific, Idaho, Illinois, Iowa, Kansas, 

Kentucky, Louisiana, Maine, Michigan, 

Minnesota, Mississippi, Missouri, Montana, 

Nebraska, Nevada, New Hampshire, New Mexico, 

New York, North Carolina, North Dakota, Ohio, 

Oklahoma, Oregon, Pennsylvania, South Dakota, 

Tennessee, Texas, Utah, Virginia, Washington, 

West Virginia, Wisconsin, Wyoming

Idaho, Utah

Idaho, Washington 

Oregon, Washington

361

Appendix 2.—Response curves for commonly used instruments

These response curves are typical of commonly used instrument systems. Using the 

curves and the magnifications found in the station lists, the absolute magnification 

curves of some of the instruments can be deduced. The curves are normalized at 1 sec for 

short-period instruments and 25 sec for long-period instruments. Graphs that can be used 

for scaling are available from the network operators.

\

01 03 06 10 38 10 30 80 100 300 8001000

PERIOD, IN SECONDS

Figure 1.--Response curves characteristic of the

standardized WWSSN instrumentation. The shortperiod curve is plotted to the left of the longperiod curve.

z

C5 03

003 006 01 03 06

PERIOD, IN SECONDS

Figure 2.--Response curve characteristic 

of the Mark L-4C instrument system as 

designed by the USGS, Menlo Park. 

Other short-period instrument systems 

sometimes exhibit this same response.

363
Appendix 2.—Response curves for commonly used instruments—Continued

30 60 100 300 600 1000

PERIOD, IN SECONDS

Figure 3.--Response curves characteristic of the 

standardized LRSM instrumentation. The shortperiod curve is plotted to the left of the longperiod curve.

PERIOD, IN SECONDS

Figure 4.--Response curve characteristic of the short-period vertical 

instruments employed by the Alaska 

Tsunami Warning Center as well as 

by the station SIT.

\

001 003 006 01 03 061 3 610 30 60 100 300 600 1000

PERIOD, IN SECONDS

Figure 5.--Response curve characteristic of the broadband long-period 

Sprengnether instruments used by Lawrence Livermore Laboratory, 

Calif.

364
Appendix 2.—Response curves for commonly used instruments—Continued

L

PERIOD, IN SECONDS

Figure 6.--Response curve characteristic of the standardized HGLP instrumentation.

z

30 60 100 300 600 1000

PERIOD, IN SECONDS

Figure 7.--Response curves characteristics of the 

standardized SRO instrumentation. The shortperiod curve is plotted to the left of the longperiod curve.

i

03 06 1 30 60 100

PERIOD, IN SECONDS

Figure 8.--Response curve characteristic of 

the LASA instruments. The short-period 

curve is to the left of the long-period

365
Appendix 2. —Response curves for commonly used instruments—Continued

\

0 03 0 06 01

PERIOD, IN SECONDS

Figure 9.--Response curve characteristic of 

the short-period vertical instruments 

employed by Lamont-Doherty Geological 

Observatory, N.Y.

003 006

PERIOD, IN SECONDS

Figure 10.--Response curve characteristic of 

the Geotech S-13 instrument system used 

by the USGS in its South Carolina and 

Puerto Rico networks.

\

V

003 006

PERIOD, IN SECONDS

Figure 11.--Response curve characteristic 

of the short-period vertical instrument used by the University of Washington.

366
Appendix 3.—Alphabetic listing of station codes

Code State Operator Page

(AA) Washington USGS (Menlo Park, Calif.) 343

(AA-IS) Alaska Teledyne Geotech 22

(AAF) California USGS (Menlo Park, Calif.) 67

AAM Michigan University of Michigan 170

AARM California USGS (Menlo Park, Calif.) 64

(AARS) California USGS (Menlo Park, Calif.) 64

AAU Utah University of Utah 313

(AB) Washington USGS (Menlo Park, Calif.) 343

(ABAB) California USGS (Menlo Park, Calif.) 64

(ABG) Pennsylvania Pennsylvania State University 272

ABJM California USGS (Menlo Park, Calif.) 64

(ABJS) California USGS (Menlo Park, Calif.) 64

(ABL) California USGS (Pasadena, Calif.) and C.I.T. 82

(ABP) California USGS (Menlo Park, Calif.) 64

ABQ New Mexico USGS (Albuquerque, N.Mex.) 217

ABRM California USGS (Menlo Park, Calif.) 64

(ABRS) California USGS (Menlo Park, Calif.) 64

ABV Virgin Islands Lamont-Doherty Geological Observ. 324

(AC-IS) Alaska Teledyne Geotech 22

ACA Alaska USGS (Las Vegas, Nev.) 24

ACB Alaska USGS (Las Vegas, Nev.) 24

ACC Alaska USGS (Las Vegas, Nev.) 24

ACD Alaska USGS (Las Vegas, Nev.) 24

ACE Alaska USGS (Las Vegas, Nev.) 24

ACF Alaska USGS (Las Vegas, Nev.) 24

(ACH) California USGS (Menlo Park, Calif.) 65

(AD-IS) Alaska Teledyne Geotech 22

AD1 Alaska University of Colorado 21

AD2 Alaska University of Colorado 21

AD3 Alaska University of Colorado 21

AD4 Alaska University of Colorado 21

ADS Alaska University of Colorado 21

AD6 Alaska University of Colorado 21

AD7 Alaska University of Colorado 21

ADS Alaska University of Colorado 21

ADA Alaska USGS (Menlo Park, Calif.) 30

ADC California USGS (Menlo Park, Calif.) 64

ADK Alaska NOAA (Adak, Alaska) 8

(ADL) California California Institute of Technology 75

ADM Nevada USGS (Las Vegas, Nev.) 198

ADN New York Lamont-Doherty Geological Observ. 232

ADR California USGS (Menlo Park, Calif.) 65

(ADWD) California USGS (Menlo Park, Calif.) 64

ADWM California USGS (Menlo Park, Calif.) 64

(AE-NC) North Carolina Teledyne Geotech 243

AFDM California USGS (Menlo Park, Calif.) 64

(AFHD) California USGS (Menlo Park, Calif.) 64

AFHM California USGS (Menlo Park, Calif.) 64

(AFHS) California USGS (Menlo Park, Calif.) 64

(AFID) California USGS (Menlo Park, Calif.) 64

AFRM California USGS (Menlo Park, Calif.) 64

AGC California USGS (Menlo Park, Calif.) 65

AGI Alaska University of Alaska 13

AGIM California USGS (Menlo Park, Calif.) 64

AGM Maine Weston Observatory 165

(AGRI) California USGS (Menlo Park, Calif.) 64

AHA Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

ATOM California USGS (Menlo Park, Calif.) 64

(AHDR) California USGS (Menlo Park, Calif.) 64

(AHFR) California USGS (Menlo Park, Calif.) 64

AHRM California USGS (Menlo Park, Calif.) 64

(AHU) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

(AI-NB) Nebraska Teledyne Geotech 195

AIC California USGS (Pasadena, Calif.) and C.I.T. 82

AIN Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

(AK-OK) Oklahoma Teledyne Geotech 255

AK1 Alaska University of Colorado 21

AK2 Alaska University of Colorado 21

AK3 Alaska University of Colorado 21

(AL-OK) Oklahoma Teledyne Geotech 255

ALA Nevada USGS (Las Vegas, Nev.) 198

(ALB) New Mexico Sandia Laboratories 219

(ALC) Colorado NOAA (Boulder, Colo.) 101

ALD Washington Tera Corporation 340

Code State Operator Page

ALF New York Lamont-Doherty Geological Observ.

(ALIN) California USGS (Menlo Park, Calif.)

(ALM) California USGS (Menlo Park, Calif.)

ALNM California USGS (Menlo Park, Calif.)

(ALO) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(ALO) Oregon Southern Oregon State College

ALQ New Mexico USGS (Albuquerque, N.Mex.)

(ALV) Vermont Lamont-Doherty Geological Observ.

ALX New York Lamont-Doherty Geological Observ.

(ALX) California USGS (Menlo Park, Calif.)

(AM-OK) Oklahoma Teledyne Geotech

AMA Alaska USGS (Las Vegas, Nev.)

AMC California USGS (Menlo Park, Calif.)

AMG Georgia Georgia Southwestern College

AMMO New Mexico USGS (Albuquerque, N.Mex.)

AMS California USGS (Pasadena, Calif.) and C.I.T.

AMU Alaska Alaska Methodist University

(AN-MA) Montana Teledyne Geotech

AN1 Ohio University of Michigan

(AN2) Ohio University of Michigan

(AN3) Ohio University of Michigan

(AN4) Ohio University of Michigan

(AN5) Ohio University of Michigan

(AN6) Ohio University of Michigan

ANA Alaska USGS (Las Vegas, Nev.)

ANB Alaska USGS (Las Vegas, Nev.)

(ANC) Nevada University of Nevada

AND Alaska USGS (Las Vegas, Nev.)

(AND) California USGS (Menlo Park, Calif.)

(ANG) California USGS (Menlo Park, Calif.)

ANU Utah University of Utah

ANV Alaska University of Alaska

(ANV) California USGS (Menlo Park, Calif.)

ANZ California USGS (Menlo Park, Calif.)

AODM California USGS (Menlo Park, Calif.)

AOHM California USGS (Menlo Park, Calif.)

(AOHO) California USGS (Menlo Park, Calif.)

(AOTD) California USGS (Menlo Park, Calif.)

(AP-OK) Oklahoma Teledyne Geotech

APH New York Lamont-Doherty Geological Observ.

(APHR) California USGS (Menlo Park, Calif.)

(APR) Nevada USGS (Las Vegas, Nev.)

APR Puerto Rico USGS (Cayey, P.R.)

APRM California USGS (Menlo Park, Calif.)

APT Connecticut Weston Observatory

(AR-WS) Wisconsin Teledyne Geotech

ARC California University of California, Berkeley

ARJM California USGS (Menlo Park, Calif.)

ARN California USGS (Menlo Park, Calif.)

(ARPW) California USGS (Menlo Park, Calif.)

ARRA California USGS (Menlo Park, Calif.)

ARRM California USGS (Menlo Park, Calif.)

(ARWJ) California USGS (Menlo Park, Calif.)

ARWM California USGS (Menlo Park, Calif.)

(AS-PA) Pennsylvania Teledyne Geotech

ASB Alaska USGS (Las Vegas, Nev.)

ASC Alaska USGS (Las Vegas, Nev.)

ASD Alaska USGS (Las Vegas, Nev.)

(ASHR) California USGS (Menlo Park, Calif.)

ASRM California USGS (Menlo Park, Calif.)

ASU Arizona Arizona State University

(AT-NV) Nevada Teledyne Geotech

ATL Georgia Georgia Institute of Technology

(ATR) California USGS (Menlo Park, Calif.)

ATT New York Lamont-Doherty Geological Observ.

(AUF) AJ *ska University of Alaska

(AUK) Alaska University of Alaska

(AUM) Alaska University of Alaska

(AUP) Alaska University of Alaska

(AVC) California University of Nevada

AVRM California USGS (Menlo Park, Calif.)

(AVRS) California USGS (Menlo Park, Calif.)

(AX-AL) Alabama Teledyne Geotech

(AX2AL) Alabama Teledyne Geotech

232

64

68

64

128

257

217

323

232

67

255

24

68

123

217

82

9

191

249

249

249

249

249

249

24

24

200

24

65

65

313

13

64

67

64

64

64

64

255

232

64

198

277

64

115

350

50

64

65

64

64

64

64

64

274

24

24

24

64

64

36

205

124

71

232

13

13

13

13

99

64

64

6

6

367
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

(AY-SD) South Dakota Teledyne Geotech 290

(AZ-TX) Texas Teledyne Geotech 304

(B) Washington USGS (Menlo Park, Calif.) 343

(BA-WS) Wisconsin Teledyne Geotech 350

BAH Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

(BAL) Alaska USGS (Menlo Park, Calif.) 26

(BAM) California USGS (Menlo Park, Calif.) 68

BAR California California Institute of Technology 75

(BAR) Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

BAV Virginia Va. Polytechnic Inst. & State Univ. 325

BAVM California USGS (Menlo Park, Calif.) 64

(BB-PA) Pennsylvania Teledyne Geotech 274

BBC California California Institute of Technology 75

(BED) Delaware Delaware Geological Survey 117

BBF New York Harry H. Larkin, Jr. 227

BBGM California USGS (Menlo Park, Calif.) 64

BBI Idaho USGS (Las Vegas, Nev.) 138

BBM Montana University of Montana 189

BBN New Mexico N.Mex. Institute of Mining and Tech. 222

BBNM California USGS (Menlo Park, Calif.) 64

BBR California USGS (Menlo Park, Calif.) 70

(BC2) California USGS (Pasadena, Calif.) and C.I.T. 82

BCB Montana University of Montana 189

BCC California USGS (Pasadena, Calif.) and C.I.T. 82

BCD California USGS (Pasadena, Calif.) and C.I.T. 82

BCGM California USGS (Menlo Park, Calif.) 64

(BCH) California USGS (Menlo Park, Calif.) 64

(BCH) California USGS (Pasadena, Calif.) and C.I.T. 8"2

BCHM California USGS (Menlo Park, Calif.) 64

BCL California USGS (Pasadena, Calif.) and C.I.T. 82

(BCM) California USGS (Pasadena, Calif.) and C.I.T. 82

BCN Nevada USGS (Boulder City, Nev.) 196

(BCR) California USGS (Menlo Park, Calif.) 68

(BCS) Alaska USGS (Menlo Park, Calif.) 26

(BCS) South Carolina USGS (Denver, Colo.) 285

BCT Connecticut Weston Observatory 115

BCU Utah USGS (Denver, Colo.) 318

(BD-PA) Pennsylvania Teledyne Geotech 274

BDA Arizona USGS (Denver, Colo.) 40

BDG Washington University of Washington 336

BDP Alaska University of Alaska 13

BDU Utah University of Utah 313

BDW Wyoming U.S. Air Force 357

(BE-FL) Florida Teledyne Geotech 121

BEA Nevada USGS (Las Vegas, Nev.) 198

BED D.C. Carnegie Institution of Washington 119

BEHM California USGS (Menlo Park, Calif.) 65

BEI Idaho University of Utah 142

BEMM California USGS (Menlo Park, Calif.) 65

(BEN) California USGS (Menlo Park, Calif.) 64

(BF-CL) California Teledyne Geotech 96

BFC California USGS (Pasadena, Calif.) and C.I.T. 82

(BFS) California USGS (Menlo Park, Calif.) 69

BFW Washington University of Washington 336

(BG-ME) Maine Teledyne Geotech 164

(EGA) Alaska USGS (Menlo Park, Calif.) 26

BGC California USGS (Menlo Park, Calif.) 65

(BGG) California USGS (Menlo Park, Calif.) 67

BGH California USGS (Menlo Park, Calif.) 68

(BGM) California USGS (Menlo Park, Calif.) 64

BGN Nevada University of Nevada 200

BGO Ohio Bowling Green State University 246

(BGR) New York Lamont-Doherty Geological Observ. 232

(BGU) California USGS (Menlo Park, Calif.) 65

BHI Idaho University of Montana 139

(BHM) California USGS (Pasadena, Calif.) and C.I.T. 82

BHP Panama C.Z. Panama Canal Company 266

(BHR) California University of Southern California 61

BHSM California USGS (Menlo Park, Calif.) 65

(BI-VA) Virginia Teledyne Geotech 332

BIl Alaska University of Alaska 13

BI2 Alaska University of Alaska 13

BI3 Alaska University of Alaska 13

BI4 Alaska University of Alaska 13

368

Code State Operator Page

BIG Alaska USGS (Menlo Park, Calif.) 26

BIO Alaska USGS (Sitka, Alaska) 20

BJCM California USGS (Menlo Park, Calif.) 65

BJOM California USGS (Menlo Park, Calif.) 65

(BK-AR) Arkansas Teledyne Geotech 46

BKC California USGS (Menlo Park, Calif.) 66

(BKH) New York Lamont-Doherty Geological Observ. 232

(BKO) California USGS (Menlo Park, Calif.) 67

BKS California University of California, Berkeley 50

(BL-WV) West Virginia Teledyne Geotech 346

BLA Virginia Va. Polytechnic Inst. & State Univ. 325

BLG California USGS (Pasadena, Calif.) and C.I.T. 82

BLK Montana University of Montana 189

BLL Washington Western Washington University 334

(BLM) Nevada University of Nevada 200

(BLMY) New York Woodward-Clyde Consultants 239

BLN Washington University of Washington 336

BLO Indiana University of Indiana 148

BLP California USGS (Pasadena, Calif.) and C.I.T. 82

BLR Alaska NOAA (Palmer, Alaska) 17

BLRM California USGS (Menlo Park, Calif.) 65

(BLU) California California Institute of Technology 75

(ELY) Alaska USGS (Menlo Park, Calif.) 26

(BM-TX) Texas Teledyne Geotech 304

BMCM California USGS (Menlo Park, Calif.) 65

BMHM California USGS (Menlo Park, Calif.) 65

BML New York Lamont-Doherty Geological Observ. 232

BMM California USGS (Pasadena, Calif.) and C.I.T. 82

BMN Nevada University of Nevada 200

(BMN) Nevada Sandia Laboratories 203

BMO Oregon USGS (Baker, Oreg.) 258

BMSM California USGS (Menlo Park, Calif.) 65

(BMT) Alaska University of Alaska 13

(BMT) California USGS (Menlo Park, Calif.) 65

(BMT) California USGS (Pasadena, Calif.) and C.I.T. 82

(BMT) Nevada USGS (Las Vegas, Nev.) 198

BNH New Hampshire Weston Observatory 214

BNY New York State Univ. of N.Y. at Binghamton 225

(BO-AL) Alabama Teledyne Geotech 6

(BOD) Nevada University of Nevada 200

(BOL) California USGS (Menlo Park, Calif.) 65

(BON) California USGS (Pasadena, Calif.) and C.I.T. 82

(BON) Nevada University of Nevada 200

BOU Colorado University of Colorado 102

BOZ Montana Montana State University 185

(BP-CL) California Teledyne Geotech 96

BPCM California USGS (Menlo Park, Calif.) 65

BPFM California USGS (Menlo Park, Calif.) 65

BPIM California USGS (Menlo Park, Calif.) 65

BPK Arizona USGS (Pasadena, Calif.) and C.I.T. 43

BPPM California USGS (Menlo Park, Calif.) 65

BPT Connecticut Weston Observatory 115

BPU Utah University of Utah 313

(BQ-AK) Alaska Teledyne Geotech 22

(BR-PA) Pennsylvania Teledyne Geotech 274

BRC New Mexico Los Alamos Scientific Laboratory 220

BRH Alaska University of Alaska 13

BRK California University of California, Berkeley 50

BRM Missouri Saint Louis University 179

BRMM California USGS (Menlo Park, Calif.) 65

(BRO) California USGS (Menlo Park, Calif.) 65

(BRP) California USGS (Menlo Park, Calif.) 70

BRR Missouri Saint Louis University 179

(BRV) Vermont Lamont-Doherty Geological Observ. 323

BRVM California USGS (Menlo Park, Calif.) 65

BRW Alaska USGS (College, Alaska) 12

(BRY) California Tera Corporation 54

(BS-MA) Montana Teledyne Geotech 191

BSBM California USGS (Menlo Park, Calif.) 65

BSC California USGS (Pasadena, Calif.) and C.I.T. 82

BSCM California USGS (Menlo Park, Calif.) 65

BSE Idaho Boise State University 135

BSGM California USGS (Menlo Park, Calif.) 65

BSLM California USGS (Menlo Park, Calif.) 65
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

BSM California USGS (Pasadena, Calif.) and C.I.T. 82

BSN California USGS (Pasadena, Calif.) and C.I.T. 82

BSRM California USGS (Menlo Park, Calif.) 65

(BTL) California California Institute of Technology 75

(BTT) California USGS (Menlo Park, Calif.) 67

BTW California USGS (Menlo Park, Calif.) 71

BTY Nevada USGS (Las Vegas, Nev.) 198

BUF New York Canisius College 226

(BUI) Idaho U.S. Bureau/of Mines 143

BUR Nevada USGS (Las Vegas, Nev.) 198

BUR Vermont University of Vermont 322

BUT Montana Mont. Col. of Mineral Sci. and Tech. 186

(BUZ) California USGS (Menlo Park, Calif.) 68

(BV-PA) Pennsylvania Teledyne Geotech 274

BVL California USGS (Menlo Park, Calif.) 65

BVLM California USGS (Menlo Park, Calif.) 65

(BVR) Pennsylvania Pennsylvania State University 272

BVYM California USGS (Menlo Park, Calif.) 65

(BWR) California USGS (Menlo Park, Calif.) 66

(BX-UT) Utah Teledyne Geotech 319

(BY-IO) Iowa Teledyne Geotech 152

(BZD) California Tera Corporation 54

BZE Montana Montana State University 185

BZM Montana Montana State University 185

(C) Washington USGS (Menlo Park, Calif.) 343

(CA) Washington USGS (Menlo Park, Calif.) 343

(CAC) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

CACM California USGS (Menlo Park, Calif.) 65

CADM California USGS (Menlo Park, Calif.) 65

(CAF) South Carolina USGS (Denver, Colo.) 285

CAG Puerto Rico USGS (Cayey, P.R.) 277

CAIM California USGS (Menlo Park, Calif.) 65

(CAL) California USGS (Menlo Park, Calif.) 65

CALM California USGS (Menlo Park, Calif.) 65

CAM Massachusetts M.I.T. and Harvard University 168

(CAM) California USGS (Pasadena, Calif.) and C.I.T. 82

(CAN) California USGS (Menlo Park, Calif.) 67

(CAN) Nevada University of Nevada 200

CAOM California USGS (Menlo Park, Calif.) 65

(CAR) California USGS (Menlo Park, Calif.) 70

(CAS) California USGS (Menlo Park, Calif.) 71

CBC California USGS (Menlo Park, Calif.) 67

<CBH) California USGS (Menlo Park, Calif.) 65

CBHM California USGS (Menlo Park, Calif.) 65

(CBL) California USGS (Menlo Park, Calif.) 68

CBM Maine Weston Observatory 165

CBN Virginia USGS (Corbin, Va.) 327

CBO California USGS (Menlo Park, Calif.) 68

CBRM California USGS (Menlo Park, Calif.) 65

CBW Washington University of Washington 336

CBWM California USGS (Menlo Park, Calif.) 66

(CC-WA) Washington Teledyne Geotech 341

CCA Puerto Rico USGS (Cayey, P.R.) 277

CCB Alaska University of Alaska 13

(CCC) California USGS (Menlo Park, Calif.) 67

(CCF) California USGS (Menlo Park, Calif.) 69

CCN New Mexico USGS (Albuquerque, N.Mex.) 217

CCNM California USGS (Menlo Park, Calif.) 66

CCO California California State University, Chico 56

CCOM California USGS (Menlo Park, Calif.) 66

(CCQ) California USGS (Menlo Park, Calif.) 66

(CCR) California USGS (Menlo Park, Calif.) 66

(CCS) South Carolina USGS (Denver, Colo.) 285

CCO Utah University of Utah 313

CCYM California USGS (Menlo Park, Calif.) 66

(CDA) Alaska University of Alaska 13

(CDA) Alaska NOAA (Palmer, Alaska) 17

CDC California USGS (Menlo Park, Calif.) 67

CDG Georgia Georgia Institute of Technology 124

CDN New Mexico USGS (Albuquerque, N.Mex.) 217

CDOM California USGS (Menlo Park, Calif.) 66

CDP Puerto Rico USGS (Cayey, P.R.) 277

(CDR) California USGS (Menlo Park, Calif.) 70

CDSM California USGS (Menlo Park, Calif.) 66

Code State Operator Page

CDUM California USGS (Menlo Park, Calif.)

(CE-WA) Washington Teledyne Geotech

CEC Texas USGS (Menlo Park, Calif.)

CED California Calif. Department of Water Resources

CEH North Carolina University of North Carolina

(CEM) California USGS (Pasadena, Calif.) and C.I.T.

(CF-WS) Wisconsin Teledyne Geotech

CFI Alaska USGS (Menlo Park, Calif.)

CFM Montana University of Montana

(CFT) California California Institute of Technology

(CFU) Utah University of Utah

(CFW) California USGS (Menlo Park, Calif.)

CFWM California USGS (Menlo Park, Calif.)

(CG-VA) Virginia Teledyne Geotech

(CGB) Alaska USGS (Menlo Park, Calif.)

CGC Colorado NOAA (Boulder, Colo.)

CGM Missouri Saint Louis University

(CGS) California USGS (Menlo Park, Calif.)

CGSM California USGS (Menlo Park, Calif.)

CHS Georgia Georgia Institute of Technology

CH6 Georgia Georgia Institute of Technology

(CHA) Virginia University of Virginia

CHC North Carolina University of North Carolina

(CHF) South Carolina USGS (Denver, Colo.)

CHI Illinois Loyola University

(CHI) Alaska University of Alaska

CHK Illinois Weather Bureau and Univ. of Chicago

(CHO) Alaska University of Alaska

CHP California California Institute of Technology

(CHR) California USGS (Menlo Park, Calif.)

(CHRY) New York Woodward-Clyde Consultants

(CHW) Washington University of Washington

CHX Alaska USGS (Menlo Park, Calif.)

(CI-VA) Virginia Teledyne Geotech

CIS California California Institute of Technology

(CJ) Wyoming USGS (Menlo Park, Calif.)

(CJP) California USGS (Pasadena, Calif.) and C.I.T.

CJW Wyoming USGS (Menlo Park, Calif.)

(CKC) California California Institute of Technology

CKK Alaska USGS (Menlo Park, Calif.)

CKM Montana University of Montana

(CL-ID) Idaho Teledyne Geotech

CLC California California Institute of Technology

CLCM California USGS (Menlo Park, Calif.)

CLE Ohio John Carroll University

CLH Maryland USC&GS (Cheltenham)

(CLI) California USGS (Pasadena, Calif.) and C.I.T.

CLN New Mexico N.Mex. Institute of Mining and Tech.

(CLO) California USGS (Menlo Park, Calif.)

CLP New Mexico Los Alamos Scientific Laboratory

(CLP) California USGS (Pasadena, Calif.) and C.I.T.

CLS California University of California, Berkeley

CLT Virginia Va. Polytechnic Inst. & State Univ.

CLW Washington University of Washington

CLY New York Lamont-Doherty Geological Observ.

(CM1) Minnesota University of Minnesota

(CM2) Minnesota University of Minnesota

(CM3) Minnesota University of Minnesota

(CM4) Minnesota University of Minnesota

(CMS) Minnesota University of Minnesota

(CM6) Minnesota University of Minnesota

CMA Alaska Department of the Air Force

CMCM California USGS (Menlo Park, Calif.)

CMH California USGS (Pasadena, Calif.) and C.I.T.

CMHM California USGS (Menlo Park, Calif.)

CMJM California USGS (Menlo Park, Calif.)

CMN Nevada University of Nevada

CMO Alaska USGS (College, Alaska)

CMOM California USGS (Menlo Park, Calif.)

CMRM California USGS (Menlo Park, Calif.)

(CMT) California USGS (Menlo Park, Calif.)

(CN-WS) Wisconsin Teledyne Geotech

CNA Alaska University of Alaska

(CNBC) Nevada UGSG (Menlo Park, Calif.)

66

341

312

87

241

82

350

26

189

75

313

66

66

332

26

101

179

66

66

124

124

331

241

285

144

13

145

13

75

67

239

336

26

332

75

355

83

355

75

26

189

137

75

66

248

166

83

222

66

220

83

50

325

336

232

172

172

172

172

172

172

10

66

83

66

66

200

11

66

66

67

350

13

208

369
Appendix 3.—Alphabetic listing of station aodes—Continued

Code State Operator Page

CNC California University of California, Berkeley 50

CNCM California USGS (Menlo Park, Calif.) 66

CND Nevada University of Nevada 200

CNE Texas USGS (Menlo Park, Calif.) 312

(CNEC) Nevada UGSG (Menlo Park, Calif.) 208

(CNHC) Nevada UGSG (Menlo Park, Calif.) 208

(CNHM) Nevada UGSG (Menlo Park, Calif.) 208

(CNHR) Nevada UGSG (Menlo Park, Calif.) 208

CNJ New Jersey Lamont-Doherty Geological Observ. 216

CNL Washington USGS (Menlo Park, Calif.) 343

CNM New Mexico USGS (Albuquerque, N.Mex.) 217

CNN Ohio Xavier University 247

CNO Texas USGS (Menlo Park, Calif.) 312

(CNPS) Nevada UGSG (Menlo Park, Calif.) 208

(CNR) California USGS (Menlo Park, Calif.) 64

(CNS) California USGS (Menlo Park, Calif.) 69

(CNSB) Nevada UGSG (Menlo Park, Calif.) 208

CNW Texas USGS (Menlo Park, Calif.) 312

CNY New York City College of New York 230

(CO-SD) South Dakota Teledyne Geotech 290

C02 California USGS (Pasadena, Calif.) and C.I.T. 83

COA California USGS (Pasadena, Calif.) and C.I.T. 83

(COB) Colorado USGS (Menlo Park, Calif.) Ill

COE California USGS (Menlo Park, Calif.) 66

COH New Mexico USGS (Albuquerque, N.Mex.) 217

(COK) California USGS (Pasadena, Calif.) and C.I.T. 83

COL Alaska USGS (College, Alaska) 11

(COL) Nevada University of Nevada 200

(COP) California USGS (Menlo Park, Calif.) 69

(COQ) California California Institute of Technology 75

COR Oregon Oregon State University 259

(COR) Nevada University of Nevada 200

COT California USGS (Pasadena, Calif.) and C.I.T. 83

(COT) Nevada University of Nevada 200

(COV) Vermont Lamont-Doherty Geological Observ. 323

(COX) California USGS (Pasadena, Calif.) and C.I.T. 83

(COY) California California Institute of Technology 75

(CP-CL) California Teledyne Geotech 96

(CP-SO) Tennessee Teledyne Geotech 295

CPC North Carolina U.S. Department of the Navy 244

CPD Puerto Rico USGS (Cayey, P.R.) 277

CPE California California Institute of Technology 75

CPH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

CPK Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

CPL Connecticut Weston Observatory 115

CPLM California USGS (Menlo Park, Calif.) 66

(CPM) California USGS (Pasadena, Calif.) and C.I.T. 83

CPN Nevada USGS (Las Vegas, Nev.) 198

CPO Tennessee USGS (McMinnville, Tenn.) 292

CPT California California Institute of Technology 75

(CPT) California USGS (Menlo Park, Calif.) 66

CPTM California USGS (Menlo Park, Calif.) 66

CPU Utah University of Utah 313

CPW Washington University of Washington 336

CPX Nevada USGS (Las Vegas, Nev.) 198

(CQ-NV) Nevada Teledyne Geotech 205

(CR-NB) Nebraska Teledyne Geotech 195

(CR2NB) Nebraska Teledyne Geotech 195

CRAM California USGS (Menlo Park, Calif.) 66

CRC California USGS (Menlo Park, Calif.) 66

CRD California USGS (Menlo Park, Calif.) 70

(CRE) California California Institute of Technology 75

CRF Washington University of Washington 336

(CRG) California USGS (Pasadena, Calif.) and C.I.T. 83

CRH California USGS (Menlo Park, Calif.) 69

(CRK) California USGS (Menlo Park, Calif.) 66

CRO Oklahoma University of Oklahoma 252

CRPM California USGS (Menlo Park, Calif.) 66

CRR California USGS (Pasadena, Calif.) and C.I.T. 83

CRU Kentucky Saint Louis University 159

(CRY) California USGS (Menlo Park, Calif.) 71

(CS-TN) Tennessee Teledyne Geotech 295

CSA Alaska NOAA (Palmer, Alaska) 17

CSB Puerto Rico USGS (Cayey, P.R.) 277

Code State Operator Page

CSC South Carolina University of South Carolina 284

CSCM California USGS (Menlo Park, Calif.) 66

CSE Texas USGS (Menlo Park, Calif.) 312

CSH California USGS (Menlo Park, Calif.) 66

CSHM California USGS (Menlo Park, Calif.) 66

CSJ Puerto Rico Lamont-Doherty Geological Observ. 281

(CSL) California Calif. Department of Water Resources 87

CSP California Calif. Department of Water Resources 87

CSR California USGS (Menlo Park, Calif.) 67

(CSS) California USGS (Menlo Park, Calif.) 66

CSSM California USGS (Menlo Park, Calif.) 66

CSW Texas USGS (Menlo Park, Calif.) 312

(CT-OK) Oklahoma Teledyne Geotech 255

CTM California USGS (Menlo Park, Calif.) 71

CTR New York Lamont-Doherty Geological Observ. 232

CTV Virginia Va. Division of Mineral Resources 326

(CU-NV) Nevada Teledyne Geotech 205

CUP Puerto Rico Lamont-Doherty Geological Observ. 281

(CV-TN) Tennessee Teledyne Geotech 295

CVA Alaska USGS (Menlo Park, Calif.) 26

CVD California USGS (Menlo Park, Calif.) 67

CVR California USGS (Menlo Park, Calif.) 65

CW Virginia Va. Division of Mineral Resources 326

(CW-AR) Arkansas Teledyne Geotech 46

CWC California California Institute of Technology 75

CWT Texas USGS (Menlo Park, Calif.) 312

CWU Utah University of Utah 313

(CY-WY) Wyoming Teledyne Geotech 353

CYC California USGS (Menlo Park, Calif.) 66

CYH California USGS (Menlo Park, Calif.) 66

(CYO) California USGS (Menlo Park, Calif.) 66

(CZD) California USGS (Menlo Park, Calif.) 67

(CZL) New Mexico Los Alamos Scientific Laboratory 220

(D) Washington USGS (Menlo Park, Calif.) 343

(D1A) Maine Weston Observatory 165

(D2A) Maine Weston Observatory 165

(D3A) Maine Weston Observatory 165

(DA) Washington USGS (Menlo Park, Calif.) 343

DAC California Sandia Laboratories 95

(DAH) California USGS (Pasadena, Calif.) and C.I.T. 83

DAL Texas Southern Methodist University 300

(DAN) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

DAU Utah University of Utah 313

(DAV) Washington University of Washington 336

(DB2) California California Institute of Technology 75

(DBB) California USGS (Pasadena, Calif.) and C.I.T. 83

(DBMY) New York Woodward-Clyde Consultants 239

DBQ Iowa Loras College 151

DCI Idaho USGS (Las Vegas, Nev.) 138

DCU Utah University of Utah 313

(DDG) Colorado USGS (Menlo Park, Calif.) Ill

DDM Alaska University of Alaska 13

DEI Idaho University of Montana 139

DEN Colorado Regis College 103

DES Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

(DFCC) California USGS (Menlo Park, Calif.) 74

(DFHR) California USGS (Menlo Park, Calif.) 74

(DFHT) California USGS (Menlo Park, Calif.) 74

(DFLM) Nevada UGSG (Menlo Park, Calif.) 208

(DFMM) Nevada UGSG (Menlo Park, Calif.) 208

(DFOD) Nevada UGSG (Menlo Park, Calif.) 208

(DFVC) California USGS (Menlo Park, Calif.) 74

DGC Colorado NOAA (Boulder, Colo.) 101

(DH-NY) New York Teledyne Geotech 240

(DHN) New York Lamont-Doherty Geological Observ. 232

DHS California California Institute of Technology 75

(DHS) California University of Southern California 61

(DHS) Colorado USGS (Menlo Park, Calif.) Ill

(DHT) California University of Southern California 61

(DHV) Colorado USGS (Menlo Park, Calif.) Ill

DHW Washington University of Washington 336

(DI-MA) Montana Teledyne Geotech 191

(DIA) California Tera Corporation 54

DIL California USGS (Menlo Park, Calif.) 68

370
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

DIR California USGS (Menlo Park, Calif.) 66

(DKN) California USGS (Menlo Park, Calif.) 66

DKNM California USGS (Menlo Park, Calif.) 66

(DL-SD) South Dakota Teledyne Geotech 290

(DLC) Alabama USGS and Alabama Geological Survey 7

DLS Texas Ralph W. McNeely 299

DLT California California Institute of Technology 75

DMA Alaska University of Alaska 13

(DMB) Alaska University of Alaska 13

DMI Iowa Mrs. M. M. Seeburger 150

(DMPK) New Mexico Los Alamos Scientific Laboratory 220

(DNH) New Hampshire Massachusetts Inst. of Technology 212

DNM New Mexico USGS (Albuquerque, N.Mex.) 217

DNT Texas John W. Grain 301

DNY New York Lamont-Doherty Geological Observ. 232

(DOG) Nevada University of Nevada 200

DON Missouri Saint Louis University 179

DOO California USGS (Menlo Park, Calif.) 66

DOS Puerto Rico USGS (Cayey, P.R.) 277

(DP-NY) New York Teledyne Geotech 240

(DPLY) New York Woodward-Clyde Consultants 239

(DPN) Colorado USGS (Menlo Park, Calif.) Ill

(DPS) Colorado USGS (Menlo Park, Calif.) Ill

(DR-CO) Colorado Teledyne Geotech 110

(DRP) California University of Southern California 61

(DRY) California USGS (Menlo Park, Calif.) 67

(DSB) Alaska USGS (Menlo Park, Calif.) 26

DSK Alaska USGS (Menlo Park, Calif.) 26

DSN New York Lamont-Doherty Geological Observ. 232

(DSR) California USGS (Menlo Park, Calif.) 66

(DTE) California USGS (Menlo Park, Calif.) 66

DTEM California USGS (Menlo Park, Calif.) 66

DTM D.C. Carnegie Institution of Washington 119

(DU-OK) Oklahoma Teledyne Geotech 255

DUC California USGS (Menlo Park, Calif.) 66

DUG Utah University of Utah 313

DUL Minnesota University of Minnesota 172

(DUR) California USGS (Menlo Park, Calif.) 66

(DUX) Massachusetts M.I.T. and Harvard University 168

(DV-CL) California Teledyne Geotech 96

(DVL) California USGS (Pasadena, Calif.) and C.I.T. 83

DVW Washington University of Washington 336

DWM Missouri Saint Louis University 179

DY1 Tennessee Saint Louis University 297

DY2 Tennessee Saint Louis University 297

DY3 Tennessee Saint Louis University 297

DY4 Tennessee Saint Louis University 297

DY5 Tennessee Saint Louis University 297

(DYH) Washington University of Washington 336

(EA) Washington USGS (Menlo Park, Calif.) 343

BAG California USGS (Pasadena, Calif.) and C.I.T. 83

EBS South Dakota Jerome E. Payne 288

EGA California California Institute of Technology 75

ECC California California Institute of Technology 75

ECD Missouri Saint Louis University 179

(ECF) California USGS (Pasadena, Calif.) and C.I.T. 83

ECT Connecticut Weston Observatory 115

(ED-MI) Michigan Teledyne Geotech 171

(EF-TX) Texas Teledyne Geotech 304

EGC Colorado NOAA (Boulder, Colo.) 101

(EGG) California USGS (Pasadena, Calif.) and C.I.T. 83

EGN New York Lamont-Doherty Geological Observ. 232

EGR California USGS (Menlo Park, Calif.) 66

(EK-NV) Nevada Teledyne Geotech 205

EKH California USGS (Menlo Park, Calif.) 65

EKO Nevada University of Nevada 200

(EKO) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

(EKR) California Tera Corporation 54

(EL-WA) Washington Teledyne Geotech 341

ELC Illinois Saint Louis University 147

(ELG) California USGS (Menlo Park, Calif.) 68

ELK Nevada Lawrence Livermore Laboratory 207

(ELK) California USGS (Menlo Park, Calif.) 65

ELM New York Lamont-Doherty Geological Observ. 232

Code State Operator Page

(ELR) California USGS (Pasadena, Calif.) and C.I.T.

ELV Alaska University of Alaska

ELY Nevada Sandia Laboratories

(EM-KA) Kansas Teledyne Geotech

EMA Alabama USGS and Alabama Geological Survey

EMM Maine Weston Observatory

(EMM) California USGS (Menlo Park, Calif.)

(EMM) Maine Massachusetts Inst. of Technology

EMT California USGS (Menlo Park, Calif.)

(EN-MO) Missouri Teledyne Geotech

ENG Alaska University of Alaska

(ENT) Washington University of Washington

(E02TX) Texas Teledyne Geotech

(EP-TX) Texas Teledyne Geotech

(EPH) Washington University of Washington

(EPN) Nevada USGS (Las Vegas, Nev.)

EFT Texas University of Texas

EPU Utah University of Utah

EPW Washington University of Washington

ERI Idaho University of Montana

ERN Alaska USGS (Menlo Park, Calif.)

(ERP) Pennsylvania Pennsylvania State University

(ESJ) Vermont Lamont-Doherty Geological Observ.

ESR Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

EST New Mexico USGS (Albuquerque, N.Mex.)

(EST) Nevada University of Nevada

ETP Washington University of Washington

ETS Nevada USGS (Las Vegas, Nev.)

ETU Utah University of Utah

(EU-AL) Alabama Teledyne Geotech

(EU2AL) Alabama Teledyne Geotech

EUC California USGS (Menlo Park, Calif.)

(EUK) Washington University of Washington

EUM New Mexico Los Alamos Scientific Laboratory

EUR Nevada Willis A. DePaoli

EUW Washington University of Washington

(EW-IS) Hawaii-Pacific Teledyne Geotech

(EXC) . Nevada University of Nevada

(EY-NV) Nevada Teledyne Geotech

(EY2NV) Nevada Teledyne Geotech

EYP Puerto Rico USGS (Cayey, P.R.)

(FA-NV) Nevada Teledyne Geotech

(FAL) Nevada University of Calif., Berkeley

(FAR) California USGS (Menlo Park, Calif.)

FAV Arkansas University of Arkansas

FAY Arkansas University of Arkansas

(FB-AK) Alaska Teledyne Geotech

(FB2AK) Alaska Teledyne Geotech

FBK Alaska Lamont-Doherty Geological Observ.

FCN New Mexico Los Alamos Scientific Laboratory

FEA California Calif. Department of Water Resources

(FEL) California USGS (Menlo Park, Calif.)

FER California City of Ferndale

(FER) Nevada University of Nevada

FGU Utah University of Utah

FHC California University of California, Berkeley

FID Alaska USGS (Menlo Park, Calif.)

FIS Alaska USGS (Menlo Park, Calif.)

(FK-CO) Colorado Teledyne Geotech

(FKH) California Tera Corporation

FLA Utah .USGS (Denver, Colo.)

FLG Arizona USGS (Flagstaff, Ariz.)

FLO Missouri Saint Louis University

(FLP) Alaska University of Alaska

FLR Massachusetts Weston Observatory

FLT Alabama USGS and Alabama Geological Survey

(FM-UT) Utah Teledyne Geotech

(FMA) California University of Southern California

FMC Oregon Tera Corporation

FMF South Carolina USGS (Denver, Colo.)

FMW Washington University of Washington

(FN-WV) West Virginia Teledyne Geotech

(FNK) California USGS (Pasadena, Calif.) and C.I.T.

FNN New Hampshire New Hampshire Highway Department

83

13

203

155

7

165

65

163

65

182

13

336

304

304

336

198

302

313

336

139

26

272

323

128

217

200

336

198

313

6

6

68

336

220

197

336

134

200

205

205

277

205

204

70

44

44

22

22

31

220

87

.68

57

200

313

50

26

26

110

54

318

32

179

13

169

7

319

61

263

285

336

346

83

211

371
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

(FO-TX)

FOR 

(FOR) 

(FOX)

FPN

FPU

FPW 

(FR-MA)

FRE

FRI

FRM

FRP 

(FS-AZ)

FTC

FTC 

(FTH) 

(FTM)

FTR

FTW

FVM 

(FWL)

FY1

FY2

FY3

FY4

FY5

FYD

(GA-TX) 

(GA3TX)

GAFH 

(GAR)

GAV

GAXM 

(GB-NM)

GBGM

GBL

GBM

GBOM 

(GET) 

(GC-WA)

GCA

GCC

GCMM

GCR

GCVM

GCW

GCY 

(GD-VA)

GDCM 

(GDH) 

(GE-AZ)

GEO 

(GF-NV)

GFN 

(GFP)

GGLM

GGPH

GHC

GBCM

GHGM

GHI

GHLM

GHS

GHW 

(GI-MA)

GIA

GIL 

(GIL)

GKC 

(GL-TX)

GLA 

(GLB) 

(GLC)

GLD

372

Texas Teledync Geotech 304

New York Fordham University 231

California USGS (Menlo Park, Calif.) 67

California Tera Corporation 54

Nevada University of Nevada 200

Utah University of Utah 313

Washington University of Washington 336

Montana Teledyne Geotech 191

California University of California, Berkeley 50

California University of California, Berkeley 50

Missouri Saint Louis University 179

California USGS (Menlo Park, Calif.) 68

Arizona Teledyne Geotech • 41

California California Institute of Technology 75

California USGS (Pasadena, Calif.) and C.I.T. 83

California USGS (Menlo Park, Calii.) 68

Arizona USGS (Pasadena, Calif.) and C.I.T. 43

California USGS (Menlo Park, Calif.) 70

Washington University of Washington 336

Missouri Saint Louis University 179

California USGS (Menlo Park, Calif.) 67

Alaska University of Alaska 13

Alaska University of Alaska 13

Alaska University of Alaska 13

Alaska University of Alaska 14

Alaska University of Alaska 14

Alaska University of Alaska 13

Texas Teledyne Geotech 304

Texas Teledyne Geotech 304

California USGS (Menlo Park, Calif.) 67

Nevada University of Nevada 200

California California Institute of Technology 75

California USGS (Menlo Park, Calif.) 67

New Mexico Teledyne Geotech 223

California USGS (Menlo Park, Calif.) 67

Washington University of Washington 336

Montana University of Montana 189

California USGS (Menlo Park, Calif.) 67

Nevada University of Nevada 200

Washington Teledyne Geotech 341

Arizona USGS (Denver, Colo.) 40

California University of California, Berkeley 50

California USGS (Menlo Park, Calif.) 67

Montana USGS (Menlo Park, Calif.) 193

California USGS (Menlo Park, Calif.) 67

Washington USC&GS (Washington, D.C.) 344

New York Victor S. Aiello 228

Virginia Teledyne Geotech 332

California USGS (Menlo Park, Calif.) 67

California USGS (Menlo Park, Calif.) 71

Arizona Teledyne Geotech 41

D.C. Georgetown University 118

Nevada Teledyne Geotech 205

New York Lamont-Doherty Geological Observ. 232

California University of Southern California 61

California USGS (Menlo Park, Calif.) 67

California USGS (Menlo Park, Calif.) 67

California USGS (Menlo Park, Calif.) 71

California USGS (Menlo Park, Calif.) 67

California USGS (Menlo Park, Calif.) 67

Idaho University of Montana 139

California USGS (Menlo Park, Calif.) 67

California USGS (Menlo Park, Calif.) 68

Washington University of Washington 336

Montana Teledyne Geotech 191

Alaska University of Alaska 14

Alaska NOAA (Palmer, Alaska) 17

Nevada University of Nevada 200

Alaska University of Alaska 14

Texas Teledyne Geotech 304

California California Institute of Technology 76

Alaska USGS (Menlo Park, Calif.) 26

Alaska USGS (Menlo Park, Calif.) 26

Colorado USGS (Denver, Colo.) 104

Code State Operator Page

GLM Alaska University of Alaska 14

(GLN) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

GLO Massachusetts M.I.T. and Harvard University 168

GLR Nevada USGS (Las Vegas, Nev.) 198

(GLV) California USGS (Menlo Park, Calif.) 67

GMA Alaska NOAA (Palmer, Alaska) 17

GMCM California USGS (Menlo Park, Calif.) 67

GMI Idaho USGS (Las Vegas, Nev.) 138

GMKM California USGS (Menlo Park, Calif.) 67

GMOM California USGS (Menlo Park, Calif.) 67

GMU Utah University of Utah 313

GMW Washington University of Washington 336

(GN-NM) New Mexico Teledyne Geotech 223

GNM New Mexico USGS (Albuquerque, N.Mex.) 217

(GO-NB) Nebraska Teledyne Geotech 195

(GOBY) New York Woodward-Clyde Consultants 239

GOC California City of Los Angeles 60

GOL Colorado Colorado School of Mines 106

(GP-MN) Minnesota Teledyne Geotech 174

GPD New Jersey Lamont-Doherty Geological Observ. 216

GPMM California USGS (Menlo Park, Calif.) 67

(GR1TX) Texas Teledyne Geotech 304

(GR2TX) Texas Teledyne Geotech 304

GRMM California USGS (Menlo Park, Calif.) 67

(GRP) California USGS (Pasadena, Calif.) and C.I.T. 83

CRT Tennessee Saint Louis University 297

GRTM California USGS (Menlo Park, Calif.) 67

GRV Missouri Saint Louis University 179

(GRW) California USGS (Menlo Park, Calif.) 68

(GS-MS) Mississippi Teledyne Geotech 176

GSC California California Institute of Technology 76

(GSCY) New York Woodward-Clyde Consultants 239

GSGM California USGS (Menlo Park, Calif.) 67

GSM Washington University of Washington 336

GSMM California USGS (Menlo Park, Calif.) 67

GSNM California USGS (Menlo Park, Calif.) 67

GSR Virginia USGS (Reston, Va.) 330

GSSM California USGS (Menlo Park, Calif.) 67

(GT-PA) Pennsylvania Teledyne Geotech 274

GTD Delaware Delaware Geological Survey 117

GUA Hawaii-Pacific USGS (Agana, Guam) 132

GUMO Hawaii-Pacific USGS (Agana, Guam) 132

(GV-TX) Texas Teledyne Geotech 304

(GVF) South Carolina USGS (Denver, Colo.) 285

GVR California USGS (Menlo Park, Calif.) 70

GVS South Carolina USGS (Denver, Colo.) 285

(GWS) California Tera Corporation 54

(GY-MN) Minnesota Teledyne Geotech 174

(GYO) Alaska USGS (Menlo Park, Calif.) 26

(GYP) California USGS (Menlo Park, Calif.) 67

(GZ-OH) Ohio Teledyne Geotech 250

GZN Nevada USGS (Las Vegas, Nev.) 198

(H) Washington USGS (Menlo Park, Calif.) 343

(HAH) California Tera Corporation 54

HAI California California Institute of Technology 76

(HAL) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

HAR Connecticut Trinity College 113

HAV California California Institute of Technology 76

HAY California California Institute of Technology 76

HAZM California USGS (Menlo Park, Calif.) 67

(HB-OK) Oklahoma Teledyne Geotech 255

HBF South Carolina USGS (Denver, Colo.) 285

HBM California University of Nevada 99

HBT California University of Nevada 99

HBTM California USGS (Menlo Park, Calif.) 67

HBV Virginia James Madison University 328

HCAM California USGS (Menlo Park, Calif.) 67

HCBM California USGS (Menlo Park, Calif.) 67

HCC California USGS (Menlo Park, Calif.) 67

(HCI) Arkansas Saint Louis University 48

(HCM) California University of Southern California 61

HCOM California USGS (Menlo Park, Calif.) 67

HCRM California USGS (Menlo Park, Calif.) 67

HCU Utah USGS (Denver, Colo.) 318
Appendix 3.—Alphabetic listing of station codes~Continued

Code State Operator Page

HCZM California USGS (Menlo Park, Calif.) 67

(HD-PA) Pennsylvania Teledyne Geotech 274

(HDA) Alaska University of Alaska 14

(HDG) California USGS (Pasadena, Calif.) and C.I.T. 83

HDLM California USGS (Menlo Park, Calif.) 68

HDM Connecticut Weston Observatory 115

HDQ Colorado Colorado School of Mines 106

HDU Utah University of Utah 313

(HDW) Colorado USGS (Menlo Park, Calif.) Ill

(HE-TX) Texas Teledyne Geotech 304

(HEC) .California USGS (Menlo Park, Calif.) 71

(HER) California USGS (Menlo Park, Calif.) 71

HET Texas Mandrel Industries, Inc. 307

HFEM California USGS (Menlo Park, Calif.) 68

HFHM California USGS (Menlo Park, Calif.) 68

HFPM California USGS (Menlo Park, Calif.) 68

HGSM California USGS (Menlo Park, Calif.) 68

HGWM California USGS (Menlo Park, Calif.) 68

(HH-fJD) North Dakota Teledyne Geotech 245

(HH2ND) North Dakota Teledyne Geotech 245

HHI Idaho University of Montana 139

HHM Montana Roy E. Wendt . 187

HHT Tennessee Saint Louis University 297

HID Idaho USGS (Las Vegas, Nev.) 138

HIG Hawaii-Pacific University of Hawaii 131

HIL Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

BIN Alaska USGS (Menlo Park, Calif.) 26

HJGM California USGS (Menlo Park, Calif.) 68

HJSM California USGS (Menlo Park, Calif.) 68

(HK-WY) Wyoming Teledyne Geotech 353

HKL Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

HKP Pennsylvania Lamont-Doherty Geological Observ. 276

HKRM California USGS (Menlo Park, Calif.) 68

HKT Texas Marine Science Institute 303

(HL) Montana USGS (Menlo Park, Calif.) 193

(HL-ID) Idaho Teledyne Geotech 137

(HL2ID) Idaho Teledyne Geotech 137

(HLB) California USGS (Menlo Park, Calif.) 70

HLK Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

HLM Montana University of Montana 189

(HLM) California USGS (Menlo Park, Calif.) 68

HLP Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

HLR Colorado Colorado School of Mines 106

(HLS) California USGS (Menlo Park, Calif.) 67

(HLT) Alabama USGS and Alabama Geological Survey 7

HLTM California USGS (Menlo Park, Calif.) 68

HMB New York Lamont-Doherty Geological Observ. 232

HMD Oregon Harold Mason 262

HMOM California USGS (Menlo Park, Calif.) 68

HMR California USGS (Menlo Park, Calif.) 70

(HN-ME) Maine Teledyne Geotech 164

HNH New Hampshire Weston Observatory 214

HNL Hawaii-Pacific University of Hawaii 131

HNY New York Lamont-Doherty Geological Observ. 232

(HOC) California USGS (Menlo Park, Calif.) 67

(HOG) California USGS (Menlo Park, Calif.) 67

(HOM) Alaska University of Alaska 14

HON Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

HORM California USGS (Menlo Park, Calif.) 68

(HOT) California California Institute of Technology 76

HOU Texas Rice University 308

HPHM California USGS (Menlo Park, Calif.) 68

HPI Idaho USGS (Las Vegas, Nev.) 138

HPLM California USGS (Menlo Park, Calif.) 68

HPP Alaska University of Alaska 14

HPRM California USGS (Menlo Park, Calif.) 68

HPU Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

HQN Alaska USGS (Menlo Park, Calif.) 26

HQRM California USGS (Menlo Park, Calif.) 68

(HR-AZ) Arizona Teledyne Geotech 41

HRC California University of California, Berkeley 50

HRO Oregon University of Washington 265

(HRS) California Tera Corporation 54

HRV Massachusetts M.I.T. and Harvard University 168

Code State Operator Page

(HS-NB) Nebraska Teledyne Geotech

HSFM California USGS (Menlo Park, Calif.)

HSLM California USGS (Menlo Park, Calif.)

(HSP) California USGS (Pasadena, Calif.) and C.I.T.

(HSP) Nevada University of Nevada

(HSS) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(HST) California USGS (Menlo Park, Calif.)

HSW Washington USGS (Menlo Park, Calif.)

(HT-MN) Minnesota Teledyne Geotech

HTU Utah University of Utah

HTW Washington University of Washington

(HUA) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

HUH Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

HUR Alaska University of Alaska

(HV-MA) Montana Teledyne Geotech

HVC California USGS (Menlo Park, Calif.)

(HVL) Nevada University of Nevada

HVO Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

HVU Utah University of Utah

(HW-IS) Hawaii-Pacific Teledyne Geotech

(HWS) California USGS (Menlo Park, Calif.)

HWSM California USGS (Menlo Park, Calif.)

(HY-MA) Montana Teledyne Geotech

IDE Puerto Rico USGS (Cayey, P.R.)

(IK-AR) Arkansas Teledyne Geotech

IKP California California Institute of Technology

ILM Alaska USGS (Menlo Park, Calif.)

IMA Alaska NOAA (Palmer, Alaska)

IMO Puerto Rico USGS (Cayey, P.R.)

IMR Puerto Rico USGS (Cayey, P.R.)

(IND) California USGS (Menlo Park, Calif.)

ING California USGS (Pasadena, Calif.) and C.I.T.

(INS) California USGS (Pasadena, Calif.) and C.I.T.

INY New York Cornell University

(IPC) California University of Southern California

IRC California California Institute of Technology

(IRN) California USGS (Pasadena, Calif.) and C.I.T.

ISA California California Institute of Technology

ITH New York Cornell University

JAC Florida U.S. Department of the Navy

JALM California USGS (Menlo Park, Calif.)

JAS California University of California, Berkeley

JBCM California USGS (Menlo Park, Calif.)

(JBF) California University of Southern California

JBGM California USGS (Menlo Park, Calif.)

JBLM California USGS (Menlo Park, Calif.)

JBMM California USGS (Menlo Park, Calif.)

(JBY) California Tera Corporation

JBZM California USGS (Menlo Park, Calif.)

JCBM California USGS (Menlo Park, Calif.)

JCT Texas Texas Technological University

JCW Washington University of Washington

(JE-LA) Louisiana Teledyne Geotech

JECM California USGS (Menlo Park, Calif.)

JEGM California USGS (Menlo Park, Calif.)

JHC California USGS (Menlo Park, Calif.)

JHLM California USGS (Menlo Park, Calif.)

JLTM California USGS (Menlo Park, Calif.)

JLXM California USGS (Menlo Park, Calif.)

JMGM California USGS (Menlo Park, Calif.)

(JN-IS) Hawaii-Pacific Teledyne Geotech

(JO-MN) Minnesota Teledyne Geotech

JOL California USGS (Menlo Park, Calif.)

(JON) California USGS (Menlo Park, Calif.)

JPLM California USGS (Menlo Park, Calif.)

JPPM California USGS (Menlo Park, Calif.)

JPRM California USGS (Menlo Park, Calif.)

JPSM California USGS (Menlo Park, Calif.)

(JR-AZ) Arizona Teledyne Geotech

JRGM California USGS (Menlo Park, Calif.)

JRRM California USGS (Menlo Park, Calif.)

(JRW) California USGS (Menlo Park, Calif.)

JRWM California USGS (Menlo Park, Calif.)

(JS-TN) Tennessee Teledyne Geotech

195

68

68

83

200

128

65

343

174

313

336

128

128

14

191

71

200

128

313

134

68

68

191

277

46

76

26

17

277

277

71

83

83

229

61

76

83

76

229

122

68

50

68

61

68

68

68

54

68

68

309

336

161

68

68

65

68

68

69

69

134

174

71

65

69

69

69

69

41

69

69

69

69

295

373
Appendix 3.—Alplidbetia listing of station codes—Continued

Code State Operator Page

JSAM

JSC

JSCM

JSFM

JSGM

JSJM

JSMM 

(JSR)

JSSM

JSTM

JTGM 

(JU-TX)

JUCM

JWSM 

(KAA)

KAE

KBF 

(KEY) 

(KC-MO)

KDC

KEA 

(KEE)

RFC

KFO 

(KG-AZ)

KGI 

(KH-AZ)

KHU 

(KIT)

KIP

KKH

KKU

KLH

KLK

KLU 

(KM-CL)

KM2

KM5

KM6

KM9

KME

KML 

(KMO) 

(KMP)

KMV 

(KN-UT)

KNB

KNH

KNK

KNO 

(KNR)

KNW

KOH

KOR

KPH 

(KPN) 

(KPR)

KRC

KRK

KT1

KT2

KT4

KT5

KT7

KT8

KT9

KTA

KTE

KTM

KTT

KTX

KTZ 

(KUB)

KUH

374

California USGS (Menlo Park, Calif.) 69

South Carolina USGS (Denver, Colo.) ' 285

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 68

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

Texas Teledyne Geotech 304

California USGS (Menlo Park, Calif.) 69

California USGS (Menlo Park, Calif.) 69

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

California University of Nevada 99

California USGS (Pasadena, Calif.) and C.I.T. 83

Missouri Teledyne Geotech 182

Alaska NOAA (Palmer, Alaska) 17

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

California California Institute of Technology 76

California College of Marin 58

Oregon Oregon State University 259

Arizona Teledyne Geotech 41

Idaho U.S. Bureau of Mines 143

Arizona Teledyne Geotech 41

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Alaska USGS (Menlo Park, Calif.) 26

California Teledyne. Geotech 96

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Alaska USGS (Menlo Park, Calif.) 26

Virginia Va. Polytechnic Inst. & State Univ. 325

Utah Teledyne Geotech 319

Utah Lawrence Livermore Laboratory 321

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Alaska USGS (Menlo Park, Calif.) 27

California California Institute of Technology 76

California USGS (Menlo Park, Calif.) 68

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

Hawaii-Pacific USGS (Agana, Guam) 132

Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 128

California California Institute of Technology 76

California Calif. Department of Water Resources 87

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Alaska University of Alaska 14

Texas USGS (Denver, Colo.) 310

Alaska USGS (Menlo Park, Calif.) 27

Texas USGS (Denver, Colo.) 310

Texas USGS (Denver, Colo.) 310

Pennsylvania Kutztown State College 267

California USGS (Pasadena, Calif.) and C.I.T. 83

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

Code State Operator Page

KVN Nevada University of Nevada 200

KYK Alaska USGS (Menlo Park, Calif.) 27

(KYP) California USGS (Pasadena, Calif.) and C.I.T. 84

(LA-GA) Georgia Teledyne Geotech 125

LAO Montana Ford Aerospace and Common. Corp. 183

LAC California Lawrence Livermore Laboratory 59

LAD New Mexico USGS (Albuquerque, N.Mex.) 217

LAF Rhode Island University of Connecticut 282

LAR Wyoming University of Wyoming 351

LAS California USGS (Menlo Park, Calif.) 69

LAW Kansas University of Kansas 153

(LB-NH) New Hampshire Teledyne Geotech 213

LB1 Montana Ford Aerospace and Commun. Corp. 183

LB2 Montana Ford Aerospace and Commun. Corp. 183

LB3 Montana Ford Aerospace and Commun. Corp. 183

LB4 Montana Ford Aerospace and Commun. Corp. 183

LBM Montana University of Montana 189

(LBP) Nevada University of Nevada 200

(LC-NM) New Mexico Teledyne Geotech 223

LC1 Montana Ford Aerospace and Commun. Corp. 183

LC2 Montana Ford Aerospace and Commun. Corp. 183

LC3 Montana Ford Aerospace and Commun. Corp. 183

LC4 Montana Ford Aerospace and Commun. Corp. 183

LCA Alabama USGS and Alabama Geological Survey 7

LCFM California USGS (Menlo Park, Calif.) 69

(LCH) California USGS (Menlo Park, Calif.) 66

(LCL) California University of Southern California 61

(LCM) California University of Southern California 61

LCV New Mexico Los Alamos Scientific Laboratory 220

(LD-MS) Mississippi Teledyne Geotech 176

LD1 Montana Ford Aerospace and Commun. Corp. 183

LD2 Montana Ford Aerospace and Commun. Corp. 183

(LD2MS) Mississippi Teledyne Geotech 176

LD3 Montana Ford Aerospace and Commun. Corp. 183

(LD3MS) Mississippi Teledyne Geotech 176

LD4 Montana Ford Aerospace and Commun. Corp. 183

(LOG) Alabama USGS and Alabama Geological Survey 7

LDM Montana Department of the Army 188

LDV Nevada University of Nevada 200

(LE-TN) Tennessee Teledyne Geotech 295

(LEI) Montana Ford Aerospace and Commun. Corp.. 183

(LE2) Montana Ford Aerospace and Commun. Corp. 183

(LE3) Montana Ford Aerospace and Commun. Corp. 183

(LE4) Montana Ford Aerospace and Commun. Corp. 183

(LED) California USGS (Pasadena, Calif.) and C.I.T. 84

LEE Utah Sandia Laboratories 316

LEX Virginia Washington and Lee University 329

(LEX) California USGS (Menlo Park, Calif.) 69

(LEX) Kentucky University of Kentucky 156

(LF1) Montana Ford Aerospace and Commun. Corp. 183

(LF2) Montana Ford Aerospace and Commun. Corp. 183

(LF3) Montana Ford Aerospace and Commun. Corp. 183

(LF4) Montana Ford Aerospace and Commun. Corp. 183

LFC New Mexico Los Alamos Scientific Laboratory 220

LFM Montana University of Montana 189

(LG-AZ) Arizona Teledyne Geotech 41

(LGA) Arizona USGS (Pasadena, Calif.) and C.I.T. 43

LGC California California Institute of Technology 76

(LCD) Colorado USGS (Menlo Park, Calif.) Ill

LGM Idaho University of Montana 139

(LHD) California USGS (Menlo Park, Calif.) 69

LHM Montana University of Montana 189

LHS South Carolina USGS (Denver, Colo.) 285

(LHU) California USGS (Pasadena, Calif.) and C.I.T. 84

LIN Nebraska Nebraska Wesleyan University 194

(LJ) Wyoming USGS (Menlo Park, Calif.) 355

LJC California California Institute of Technology 76

(LJC) California University of California, San Diego 91

LKC California USGS (Menlo Park, Calif.) 66

(LL-MS) Mississippi Teledyne Geotech 176

LLA California University of California, Berkeley 50

(LLB) Washington University of Washington 337

(LM-NV) Nevada Teledyne Geotech 205

LMO California University of Calif., Los Angeles 63
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

LMS California University of Calif., Los Angeles 63

LMU Utah University of Utah 313

LMW Washington University of Washington 337

LMZM California USGS (Menlo Park, Calif.) 69

(LN-MA) Montana Teledyne Geotech 191

(LNA) California University of Southern California 61

(LNS) California USGS (Menlo Park, Calif.) 70

(LO-NV) Nevada Teledyne Geotech 205

L02 Nevada USGS (Las Vegas, Nev.) 198

LOA New Mexico Los Alamos Scientific Laboratory 220

LOG California USGS (Menlo Park, Calif.) 70

LOG Utah University of Utah 313

(LOG) Alabama USGS and Alabama Geological Survey 7

(LOL) California Tera Corporation 54

LON Washington University of Washington 337

(LOR) California USGS (Menlo Park, Calif.) 71

(LP-TX) Texas Teledyne Geotech 304

LPC California USGS (Pasadena, Calif.) and C.l.T. 84

LPM New Mexico USGS (Albuquerque, N.Mex.) 217

LPR Puerto Rico USGS (Cayey, P.R.) 277

LRA Arkansas Saint Louis University 48

LRC California USGS (Menlo Park, Calif.) 71

LRDM California USGS (Menlo Park, Calif.) 69

LR1 Idaho USGS (Las Vegas, Nev.) 138

(LRR) California California Institute of Technology 76

LRS Puerto Rico USGS (Cayey, P.R.) 277

LRV California USGS (Menlo Park, Calif.) 65

(LS-NH) New Hampshire Teledyne Geotech 213

LSI Alaska USGS (Las Vegas, Nev.) 24

LSLM California USGS (Menlo Park, Calif.) 69

LSM Nevada USGS (Las Vegas, Nev.) 198

LSP Puerto Rico USGS (Cayey, P.R.) 277

LSI Missouri Saint Louis University 179

LSW Washington USGS (Menlo Park, Calif.) 343

(LT-PA) Pennsylvania Teledyne Geotech 274

(LTC) California USGS (Pasadena, Calif.) and C.l.T. 84

LTM California USGS (Pasadena, Calif.) and C.l.T. 84

(LTN) Tennessee Saint Louis University 297

(LTP) California USGS (Menlo Park, Calif.) 69

LTR California USGS (Menlo Park, Calif.) 68

LTU Utah University of Utah 313

LTW California USGS (Menlo Park, Calif.) 68

(LU-MS) Mississippi Teledyne Geotech 176

(LUA) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

LUB Texas Texas Technological University 309

LUN Nevada University of Nevada 200

(LV-LA) Louisiana Teledyne Geotech 161

LVK Nevada University of Nevada 201

LVN Nevada USGS (Las Vegas, Nev.) 198

LVW Nevada USGS (Las Vegas, Nev.) 198

LVY Alaska University of Alaska 14

(LWR) California USGS (Menlo Park, Calif.) 65

LXR California USGS (Menlo Park, Calif.) 69

(LY-WA) Washington Teledyne Geotech 341

LYW Washington University of Washington 337

M12 Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MAA) Alaska University of Alaska 14

(MAS) Nevada University of Nevada 201

MAC California USGS (Menlo Park, Calif.) 70

(MAM) Nevada University of Nevada 201

(MAR) Nevada University of Nevada 201

MAS Idaho University of Montana 139

(MB-MS) Mississippi Teledyne Geotech 176

MBFH California USGS (Menlo Park, Calif.) 69

MBI Idaho USGS (Las Vegas, Nev.) 138

MBW Washington University of Washington 337

(MC-SB) South Dakota Teledyne Geotech 290

MCB Alaska University of Alaska 14

MCHM California USGS (Menlo Park, Calif.) 69

MCK Alaska University of Alaska 14

(MCL) California USGS (Menlo Park, Calif.) 67

(MCM) California USGS (Menlo Park, Calif.) 69

MCN Nevada USGS (Las Vegas, Nev.) 198

(MCN) Alaska University of Alaska 14

Code State Operator Page

MCP Puerto Rico USGS (Cayey, P.R.)

(MCP) California USGS (Menlo Park, Calif.)

MCR Alaska University of Alaska

(MCR) Nevada University of Nevada

MCSM California USGS (Menlo Park, Calif.)

MCU Utah University of Utah

MCUM California USGS (Menlo Park, Calif.)

MCV Nevada USGS (Las Vegas, Nev.)

MCW Washington University of Washington

(MDA) California California Institute of Technology

(MDA) California USGS (Pasadena, Calif.) and C.l.T.

MDC California USGS (Menlo Park, Calif.)

(MDO) California USGS (Menlo Park, Calif.)

MDS Wisconsin University of Wisconsin at Madison

(MDT) California USGS (Menlo Park, Calif.)

MDV Vermont Lamont-Doherty Geological Observ.

MDW Washington University of Washington

MDY Hawaii-Pacific University of Hawaii

(MEL) Colorado USGS (Menlo Park, Calif.)

MET Tennessee Memphis State University

(MF-WS) Wisconsin Teledyne Geotech

MFA Alaska USGS (Menlo Park, Calif.)

MFM Minnesota University of Minnesota

MFS California USGS (Menlo Park, Calif.)

MFSM California USGS (Menlo Park, Calif.)

MFW Oregon University of Washington

MGA California USGS (Menlo Park, Calif.)

MGL California Calif. Department of Water Resources

MGP Puerto Rico USGS (Cayey, P.R.)

(MGS) South Carolina USGS (Denver, Colo.)

(MH-NB) Nebraska Teledyne Geotech

(MHA) Arkansas Elmer E. Rexin

MHC California University of California, Berkeley

MHK Kansas Kansas State University

MHR California USGS (Menlo Park, Calif.)

MHS Wyoming USGS (Menlo Park, Calif.)

MHT Kansas Kansas State University

(MHT) .Kansas Kansas State University

MIA Florida U.S. Department of the Navy

MID Alaska NOAA (Palmer, Alaska)

MIK Alaska University of Alaska

(MIL) California USGS (Menlo Park, Calif.)

(MIL) Nevada University of Nevada

MIM Maine Weston Observatory

MIN California University of California, Berkeley

(MIN) Nevada University of Nevada

MIX California USGS (Menlo Park, Calif.)

MJW Wyoming USGS (Menlo Park, Calif.)

MKA Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

MKC South Carolina USGS (Denver, Colo.)

MKH Hawaii-Pacific NOAA (Ewa Beach, Calif.)

(MKI) California USGS (Menlo Park, Calif.)

(ML-NM) New Mexico Teledyne Geotech

(ML1CL) California Teledyne Geotech

(ML2CL) California Teledyne Geotech

(ML3CL) California Teledyne Geotech

(ML4CL) California Teledyne Geotech

MLA Alaska USGS (Menlo Park, Calif.)

MLC California University of California, Berkeley

MLD Missouri Saint Louis University

MLF Ohio Xavier University

MLH Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

MLI Idaho University of Utah

(MLL) California California Institute of Technology

MLM New Mexico USGS (Albuquerque, N.Mex.)

(MLO) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(MLS) Alaska USGS (Menlo Park, Calif.)

MLW Wisconsin Marquette University

MLX Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(MM-TN) Tennessee Teledyne Geotech

MMA Arizona Willard L. Groene

(MMC) Alaska University of Alaska

(MMM) Missouri Saint Louis University

(MMR) California Tera Corporation

277

65

14

201

69

314

69

198

337

76

84

70

70

347

70

323

337

131

111

293

350

30

172

70

70

265

69

87

277

285

195

45

50

154

66

355

154

154

122

17

14

66

201

165

50

201

70

355

129

285

126

67

223

96

96

96

96

27

50

179

247

129

142

76

217

129

27

349

129

295

35

14

179

54

375
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

(MMV) Colorado Colorado School of Mines 106

MMWM California USGS (Menlo Park, Calif.) 70

(MN-NV) Nevada Teledyne Geotech 205

MNA Nevada University of Nevada 201

MNHM California USGS (Menlo Park, Calif.) 70

MNM Minnesota University of Minnesota 172

MNN Minnesota University of Minnesota 172

MNR California USGS (Menlo Park, Calif.) 66

(MNU) Utah University of Utah 314

MNV Nevada Lawrence Livermore Laboratory 207

(MO-ID) Idaho Teledyne Geotech 137

MOB California USGS (Menlo Park, Calif.) 70

(MOF) California USGS (Menlo Park, Calif.) 67

MOK Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

(MOK) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MON) California USGS (Menlo Park, Calif.) 68

(MON) Nevada University of Nevada 201

MOP California USGS (Menlo Park, Calif.) 71

(MOR) California USGS (Menlo Park, Calif.) 66

MOT Texas Marine Science Institute 303

MOV Puerto Rico USGS (Cayey, P.R.) 277

MOYM California USGS (Menlo Park, Calif.) 70

(MP-AR) Arkansas Teledyne Geotech 46

MPA Alaska USGS (Menlo Park, Calif.) 27

MPK California University of Nevada 99

MPR Puerto Rico University of Puerto Rico 280

(MPR) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MR-PA) Pennsylvania Teledyne Geotech 274

MRC Colorado NOAA (Boulder, Colo.) 101

(MRD) California Calif. Department of Water Resources 87

MRFM California USGS (Menlo Park, Calif.) 70

MRG West Virginia West Virginia University 345

(MRH) New York Lamont-Doherty Geological Observ. 232

(MRN) Alaska USGS (Menlo Park, Calif.) 27

(MRS) California USGS (Menlo Park, Calif.) 65

(MS-PA) Pennsylvania Teledyne Geotech 274

MSA New Mexico Los Alamos Scientific Laboratory 220

MSJ California USGS (Menlo Park, Calif.) 66

(MSNY) New York Lamont-Doherty Geological Observ. 232

MSO Montana University of Montana 189

(MSP) Alaska USGS (Menlo Park, Calif.) 27

MSTM California USGS (Menlo Park, Calif.) 70

MSU Utah University of Utah 314

(MT2) Texas Marine Science Institute 303

MTB California USGS (Menlo Park, Calif.) 70

MTC California USGS (Menlo Park, Calif.) 66

MTG Alaska USGS (Menlo Park, Calif.) 27

(MTH) California USGS (Menlo Park, Calif.) 65

MTL New Mexico Los Alamos Scientific Laboratory 220

MTP Puerto Rico Lamont-Doherty Geological Observ. 281

MTR California USGS (Menlo Park, Calif.) 68

(MTT) South Carolina USGS (Denver, Colo.) 285

(MTV) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MD-WA) Washington Teledyne Geotech 341

MUL Idaho U.S. Bureau of Mines 143

(MV-CL) California Teledyne Geotech 96

MVH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MVL) Pennsylvania Millersville State College 268

(MVR) California Tera Corporation 54

MVW Wyoming USGS (Menlo Park, Calif.) 355

MWC California California Institute of Technology 76

MWH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(MWS) California USGS (Menlo Park, Calif.) 70

(MWV) California USGS (Menlo Park, Calif.) 70

(MX-TN) Tennessee Teledyne Geotech 295

(MY-AR) Arkansas Teledyne Geotech 46

(MZ-AR) Arkansas Teledyne Geotech 46

(MZL) California USGS (Menlo Park, Calif.) 69

MZO Oklahoma University of Oklahoma 252

(N) Washington USGS (Menlo Park, Calif.) 343

(N119) Nevada UGSG (Menlo Park, Calif.) 208

(N124) Nevada UGSG (Menlo Park, Calif.) 209

(N222) Nevada UGSG (Menlo Park, Calif.) 209

NAA Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

Code State Operator Page

(NAG) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(NAL) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NAV Virginia Va. Polytechnic Inst. & State Univ. 325

NBH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NBPM California USGS (Menlo Park, Calif.) 70

NBRM California USGS (Menlo Park, Calif.) 70

NCDM 'California USGS (Menlo Park, Calif.) 70

NCFM California USGS (Menlo Park, Calif.) 70

(NCR) California USGS (Menlo Park, Calif.) 66

(ND-CL) California Teledyne Geotech 96

(NE) Montana USGS (Menlo Park, Calif.) 193

NEA Alaska University of Alaska 14

NED Delaware Delaware Geological Survey 117

NEL Nevada Sandia Laboratories 203

NEW Washington USGS (Newport, Wash.) 335

NFIM California USGS (Menlo Park, Calif.) 70

NFRM California USGS (Menlo Park, Calif.) 70

(NG-WS) Wisconsin Teledyne Geotech 350

NGH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NGL Alaska USGS (Menlo Park, Calif.) 27

NGVM California USGS (Menlo Park, Calif.) 70

(NGY) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NHB Maryland Natl. Earthquake Information Center 167

NHBM California USGS (Menlo Park, Calif.) 70

NHC Connecticut Yale University 114

NHMM California USGS (Menlo Park, Calif.) 70

(NHR) California USGS (Menlo Park, Calif.) 70

NHS South Carolina USGS (Denver, Colo.) 285

NIK Alaska NOAA (Palmer, Alaska) 17

NIN Alaska USGS (Menlo Park, Calif.) 27

NJW Wyoming USGS (Menlo Park, Calif.) 355

NKA Alaska USGS (Menlo Park, Calif.) 27

NKP Pennsylvania Fred A. Keller 269

NKT Tennessee Saint Louis University 297

(NL-AZ) Arizona Teledyne Geotech 41

(NL2AZ) Arizona Teledyne Geotech 41

NLM Maryland Natl. Earthquake Information Center 167

NLNM California USGS (Menlo Park, Calif.) 70

NMC California USGS (Menlo Park, Calif.) 70

NMCM California USGS (Menlo Park, Calif.) 70

NMHM California USGS (Menlo Park, Calif.) 70

NMM Missouri Saint Louis University 179

NMO Oklahoma University of Oklahoma 252

NMTM California USGS (Menlo Park, Calif.) 70

NMWM California USGS (Menlo Park, Calif.) 70

NMXM California USGS (Menlo Park, Calif.) 70

NNL Alaska USGS (Menlo Park, Calif.) 27

NOL Louisiana Loyola University 160

NOLM California USGS (Menlo Park, Calif.) 70

NPH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NPI Idaho University of Utah 142

NPM Nevada USGS (Las Vegas, Nev.) 198

(NPT) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

NRA Alaska University of Alaska 14

(NRCE) Nevada UGSG (Menlo Park, Calif.) 208

(NRCP) Nevada UGSG (Menlo Park, Calif.) 208

(NRGF) Nevada UGSG (Menlo Park, Calif.) 208

(NRGM) Nevada UGSG (Menlo Park, Calif.) 208

NRL D.C. Natl. Earthquake Information Center 120

NRM Nevada USGS (Las Vegas, Nev.) 198

NRR Nevada University of Nevada 201

(NRSL) Nevada UGSG (Menlo Park, Calif.) 208

(NRUB) California USGS (Menlo Park, Calif.) 74

(NRWP) Nevada UGSG (Menlo Park, Calif.) 208

NSC Connecticut Weston Observatory 115

NSHM California USGS (Menlo Park, Calif.) 70

NSPM California USGS (Menlo Park, Calif.) 70

NSU Utah University of Utah 314

(NT-NV) Nevada Teledyne Geotech 205

(NT11) Nevada UGSG (Menlo Park, Calif.) 208

(NT12) Nevada UGSG (Menlo Park, Calif.) 208

(NT13) Nevada UGSG (Menlo Park, Calif.) 208

(NT14) Nevada UGSG (Menlo Park, Calif.) 208

(NT15) Nevada UGSG (Menlo Park, Calif.) 208

376
Appendix 3 . —Alphabetic listing of station codes—Continued

Code State Operator Page

(NT16) Nevada UGSG (Menlo Park, Calif.) 208

(NT17) Nevada UGSG (Menlo Park, Calif.) 208

(NT18) Nevada UGSG (Menlo Park, Calif.) 208

(NT20) Nevada UGSG (Menlo Park, Calif.) 208

(NT21) Nevada UGSG (Menlo Park, Calif.) 209

(NT23) Nevada UGSG (Menlo Park, Calif.) 209

(NT2NV) Nevada Teledyne Geotech 205

NTI Idaho USGS (Newport, Wash.) 141

NTK Alaska USGS (Menlo Park, Calif.) 27

NTMM California USGS (Menlo Park, Calif.) 70

(NUT) California USGS (Menlo Park, Calif.) 70

(NWR) California USGS (Pasadena, Calif.) and C.I.T. 84

NWRM California USGS (Menlo Park, Calif.) 70

NYC Nevada UGSG (Menlo Park, Calif.) 209

(NYCH) Nevada UGSG (Menlo Park, Calif.) 209

NYJ Nevada UGSG (Menlo Park, Calif.) 209

(NYJT) Nevada UGSG (Menlo Park, Calif.) 209

NYM Nevada UGSG (Menlo Park, Calif.) 209

(NYMC) Nevada UGSG (Menlo Park, Calif.) 209

(NYNC) Nevada UGSG (Menlo Park, Calif.) 209

(NYND) Nevada UGSG (Menlo Park, Calif.) 209

NYR Nevada UGSG (Menlo Park, Calif.) 209

(NYRS) Nevada UGSG (Menlo Park, Calif.) 209

NYS Nevada UGSG (Menlo Park, Calif.) 209

(NYSR) Nevada UGSG (Menlo Park, Calif.) 209

NYV Nevada UGSG (Menlo Park, Calif.) 209

(NYVN) Nevada UGSG (Menlo Park, Calif.) 209

(OA-IS) Hawaii-Pacific Teledyne Geotech 134

OAK New York Lamont-Doherty Geological Observ. 233

(OAR) California USGS (Menlo Park, Calif.) 70

(OB2NV) Nevada Teledyne Geotech 205

(OB3NV) Nevada Teledyne Geotech 205

OBB California USGS (Pasadena, Calif.) and C.I.T. 84

(OBF) California USGS (Menlo Park, Calif.) 70

OBHM California USGS (Menlo Park, Calif.) 71

(OBID) California USGS (Menlo Park, Calif.) 71

(OBLO) California USGS (Menlo Park, Calif.) 71

OBS California Lamont-Doherty Geological Observ. 98

(OCAM) California USGS (Menlo Park, Calif.) 71

OCB California USGS (Pasadena, Calif.) and C.I.T. 84

OCHM California USGS (Menlo Park, Calif.) 71

OCN New York Lamont-Doherty Geological Observ. 233

(OCOR) California USGS (Menlo Park, Calif.) 71

(OCOX) California USGS (Menlo Park, Calif.) 71

OCR California USGS (Menlo Park, Calif.) 68

(ODAM) California USGS (Menlo Park, Calif.) 71

ODS Washington University of Washington 337

(OFIG) California USGS (Menlo Park, Calif.) 71

(OFOR) California USGS (Menlo Park, Calif.) 71

OGD New Jersey Lamont-Doherty Geological Observ. 216

OGOM California USGS (Menlo Park, Calif.) 71

(OGOO) California USGS (Menlo Park, Calif.) 71

OGU Utah University of Utah 314

OHCM California USGS (Menlo Park, Calif.) 71

(OHON) California USGS (Menlo Park, Calif.) 71

OHW Washington University of Washington 337

(OKAT) California USGS (Menlo Park, Calif.) 71

OKG Tennessee Saint Louis University 297

OLC California USGS (Menlo Park, Calif.) 71

OLO Oklahoma University of Oklahoma 252

(OLON) California USGS (Menlo Park, Calif.) 71

(OLQ) California USGS (Menlo Park, Calif.) 70

(OLUV) California USGS (Menlo Park, Calif.) 71

(OMK) Washington University of Washington 337

OMW Washington University of Washington 337

(ONE) Colorado USGS (Menlo Park, Calif.) Ill

(ONH) New Hampshire Massachusetts Inst. of Technology 212

OPA Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

(OPT) Alaska University of Alaska 14

(OR-FL) Florida Teledyne Geotech 121

ORAM California USGS (Menlo Park, Calif.) 71

(ORAT) California USGS (Menlo Park, Calif.) 71

ORT Tennessee Union Carbide Corporation 294

ORV California Calif. Department of Water Resources 87

Code State Operator Page

OSB South Carolina USGS (Denver, Colo.)

(OSBY) New York Woodward-Clyde Consultants

OSC South Carolina USGS (Denver, Colo.)

(OSHP) California USGS (Menlo Park, Calif.)

(OSTI) California USGS (Menlo Park, Calif.)

OSTM California USGS (Menlo Park, Calif.)

OSUM California USGS (Menlo Park, Calif.)

(OSUT) California USGS (Menlo Park, Calif.)

(OTAB) California USGS (Menlo Park, Calif.)

OTBM California USGS (Menlo Park, Calif.)

OTH Washington University of Washington

(OTL) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(OTZ) New Mexico Los Alamos Scientific Laboratory

OUT Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

OVE Nevada USGS (Boulder City, Nev.)

OWYM California USGS (Menlo Park, Calif.)

(OWYN) California USGS (Menlo Park, Calif.)

OXF Mississippi University of Mississippi

(OXR) Mississippi University of Mississippi

PAC California University of California, Berkeley

PAH Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

PAL New York Lamont-Doherty Geological Observ.

(PAL) California USGS (Menlo Park, Calif.)

PAM California Calif. Department of Water Resources

(PAR) Nevada University of Nevada

FARM California USGS (Menlo Park, Calif.)

PAS California California Institute of Technology

(PAU) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

PAX Alaska University of Alaska

(PAX) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(PB-TN) Tennessee Teledyne Geotech

PBS South Carolina USGS (Denver, Colo.)

PBU Utah University of Utah

PBWM California USGS (Menlo Park, Calif.)

(PC-MS) Mississippi Teledyne Geotech

PCA Alaska USGS (Menlo Park, Calif.)

PCAM California USGS (Menlo Park, Calif.)

PCC California University of California, Berkeley

(PCF) California California Institute of Technology

PCL California USGS (Menlo Park, Calif.)

(PCL) Alaska USGS (Menlo Park, Calif.)

PCRM California USGS (Menlo Park, Calif.)

PCU Utah University of Utah

(PE-WV) West Virginia Teledyne Geotech

(PEA) Alabama USGS and Alabama Geological Survey

PEC California Calif. Department of Water Resources

(PEM) California USGS (Menlo Park, Calif.)

(PEM) California California Institute of Technology

(PER) California USGS (Menlo Park, Calif.)

(PES) California USGS (Menlo Park, Calif.)

(PET) Alabama USGS and Alabama Geological Survey

PEV California USGS (Menlo Park, Calif.)

(PF-MI) Michigan Teledyne Geotech

PFA Arizona USGS (Denver, Colo.)

(PFO) California University of California, San Diego

(PFP) California USGS (Menlo Park, Calif.)

PGA Arkansas Saint Louis University

PGHM California USGS (Menlo Park, Calif.)

(PH-WA) Washington Teledyne Geotech

(PHA) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

PHCM California USGS (Menlo Park, Calif.)

PHH Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

PHI Pennsylvania The Franklin Institute

PHO Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

PHRM California USGS (Menlo Park, Calif.)

(PI-WY) Wyoming Teledyne Geotech

PI1 Wyoming USGS (Las Vegas, Nev.)

PI2 Wyoming USGS (Las Vegas, Nev.)

(PI2WY) Wyoming Teledyne Geotech

PI3 Wyoming USGS (Las Vegas, Nev.)

PI4 Wyoming USGS (Las Vegas, Nev.)

PIS Wyoming USGS (Las Vegas, Nev.)

PI6 Wyoming USGS (Las Vegas, Nev.)

PI7 Wyoming USGS (Las Vegas, Nev.)

285

239

285

71

71

71

71

71

71

71

337

129

220

129

196.

71

71

175

175

50

129

233

66

87

201

71

76

129

14

129

295

285

314

71

176

27

71

50

76

68

27

71

314

346

7

87

71

76

71

69

7

69

171

40

91

65

48

71

341

129

71

129

270

129

71

353

354

354

353

354

354

354

354

354

377
Appendix 3. —Alphabetic listing of station codes—Continued

Code State Operator Page

(PIC)

PIN 

(PIN) 

(PIN)

PIT 

(PIU) 

(PIV1) 

(PIV2) 

(PIV3)

PIVM 

(PJ-PA)

PJD

PJG

PJRM 

(PK-OR)

PKC

PKF

PKH 

(PKM)

PLC

PLM

PLOM

PLT 

(PLV) 

(PM-WY)

PMA

PMN

PMPM

PMR 

(PMR)

PMS

PMT

PMW

PNC

PNC

PNH

PNJ

PNK

PNL 

(PNM) 

(PNM) 

(PNM)

PNO

PNP 

(PNP) 

(PNQ)

PNR

PNY

(PO-ID) 

(PO-TX) 

(FOB) 

(POL)

POM

PON 

(PON) 

(POR)

POW

PPFM 

(PPK)

PPL 

(PPS)

PPTM

PPU

PQN 

(PR-IS)

PRC 

(PRG)

PRI 

(PRIN)

PRM

PRN 

(PRO) 

(PRO)

PRR

378

California USGS (Pasadena, Calif.) and C.I.T. 84

Wyoming USGS (Las Vegas, Nev.) 354

Alaska USGS (Menlo Park, Calif.) 27

California USGS (Menlo Park, Calif.) 65

Pennsylvania University of Pittsburgh 271

California USGS (Pasadena, Calif.) and C.I.T. 84

Kentucky Department' of the Army 158

Kentucky Department of the Army 158

Kentucky Department of the Army 158

California USGS (Menlo Park, Calif.) 71

Pennsylvania Teledyne Geotech 274

Alaska University of Alaska 14

Hawaii-Pacific USGS (Agana, Guam) 132

California USGS (Menlo Park, Calif.) 71

Oregon Teledyne Geotech 264

California USGS (Menlo Park, Calif.) 68

California USGS (Menlo Park, Calif.) 72

California USGS (Menlo Park, Calif.) 68

California USGS (Pasadena, Calif.) and C.I.T. 84

California USGS (Menlo Park, Calif.) 66

California California Institute of Technology 76

California USGS (Menlo Park, Calif.) 71

California USGS (Pasadena, Calif.) and C.I.T. 84

California USGS (Menlo Park, Calif.) 69

Wyoming Teledyne Geotech 353

Alaska NOAA (Palmer, Alaska) 17

Nevada USGS (Las Vegas, Nev.) i98

California USGS (Menlo Park, Calif.) 71

Alaska NOAA (Palmer, Alaska) 17

California USGS (Menlo Park, Calif.) 68

Alaska NOAA (Palmer, Alaska) 17

Oregon University of Oregon 260

Wyoming Ministry of Defence, United Kingdom 352

California USGS (Menlo Park, Calif.) 65

California USGS (Menlo Park, Calif.) 72

New Hampshire Massachusetts Inst. of Technology 212

New Jersey Philip J. Del Vecchio 215

Montana University of Montana 189

Alaska USGS (Menlo Park, Calif.) 27

Alaska University of Alaska 14

California USGS (Menlo Park, Calif.) 67

California USGS (Pasadena, Calif.) and C.I.T. 84

Oregon University of Washington 265

Puerto Rico USGS (Cayey, P.R.) 278

California USGS (Menlo Park, Calif.) 65

California USGS (Menlo Park, Calif.) 65

Nevada University of Nevada 201

New York Lamont-Doherty Geological Observ. 233

Idaho Teledyne Geotech 137

Texas Teledyne Geotech 304

California California Institute of Technology 76

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

California California Institute of Technology 76

Puerto Rico USGS (Cayey, P.R.) 278

Hawaii-Pacific University of Hawaii 131

California USGS (Menlo Park, Calif.) 69

Arkansas Saint Louis University 48

California USGS (Menlo. Park, Calif.) 72

Nevada University of Nevada 201

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

South Carolina USGS (Denver, Colo.) 285

California USGS (Menlo Park, Calif.) 72

Utah University of Utah 314

New Jersey Lamont-Doherty Geological Observ. 216

Hawaii-Pacific Teledyne Geotech 134

California University of California, Berkeley 50

Alaska USGS (Menlo Park, Calif.) 27

California University of California, Berkeley 50

New Jersey Lamont-Doherty Geological Observ. 216

South Carolina USGS (Denver, Colo.) 285

Nevada USGS (Las Vegas, Nev.) 198

California USGS (Menlo Park, Calif.) 69

Washington University of Washington 337

California California Institute of Technology 76

Code State Operator Page

PRS California University of California, Berkeley 50

PRW Washington University of Washington 337

(PSA) Alaska Petersburg Public School 19

PSD California USGS (Menlo Park, Calif.) 69

PSMM California USGS (Menlo Park, Calif.) 72

(PSP) California California Institute of Technology 76

PST Utah USGS (Denver, Colo.) 318

(PT-OR) Oregon Teledyne Geotech 264

PTD Oregon Oreg. Museum of Science and Industry 261

(PTO) California USGS (Pasadena, Calif.) and C.I.T. 84

PTE Alaska USGS (Menlo Park, Calif.) 27

PTG Missouri Saint Louis University 179

(PTK) California Tera Corporation 54

PTN New York Lamont-Doherty Geological Observ. 233

PTR Alabama USGS and Alabama Geological Survey 7

(PTR) Alaska USGS (Menlo Park, Calif.) 27

(PTU) Utah University of Utah 314

PTV California USGS (Menlo Park, Calif.) 72

PTYM California USGS (Menlo Park, Calif.) 72

(PU-MS) Mississippi Teledyne Geotech 176

(PUB) Alaska University of Alaska 14

PUH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

PUP Hawaii-Pacific NOAA (Ewa Beach, Calif.) 126

(PUU) Utah University of Utah 314

PUV Virginia Va. Polytechnic Inst. & State Univ. 325

(PV-AR) Arkansas Teledyne Geotech 46

PVN New Jersey Lamont-Doherty Geological Observ. 216

PVR California California Institute of Technology 76

(PVR) California USGS (Menlo Park, Calif.) 72

(PW-IL) Illinois Teledyne Geotech 146

PWA Alaska NOAA (Palmer, Alaska) 17

PWH Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

PWKM California USGS (Menlo Park, Calif.) 72

PWL Alaska USGS (Menlo Park, Calif.) 27

PWP Puerto Rico Lamont-Doherty Geological Observ. 281

(PY-AZ) Arizona Teledyne Geotech 41

PYR California Calif. Department of Water Resources 87

(PZC) Nevada University of Nevada 201

QRV Nevada University of Nevada 201

(QRY) California USGS (Menlo Park, Calif.) 72

QSR California USGS (Menlo Park, Calif.) 68

QUA Massachusetts Weston Observatory 169

(QUA) Nevada University of Nevada 201

(RAD) Colorado USGS (Menlo Park, Calif.) Ill

(RAI) Alaska University of Alaska 14

RAT Alaska USGS (Las Vegas, Nev.) 24

(RAY) California California Institute of Technology 76

RBC Colorado USGS (Denver, Colo.) 104

(RBM) California USGS (Menlo Park, Calif.) 65

RBU Utah University of Utah 314

RCD South Dakota South Dakota School of Mines 289

(RCP) California University of Southern California 61

(RCW) California USGS (Menlo Park, Calif.) 72

RCWM California USGS (Menlo Park, Calif.) 72

(RDG) Colorado USGS (Menlo Park, Calif.) Ill

(RDM) California USGS (Menlo Park, Calif.) 67

(RDM) California California Institute of Technology 76

(RDR) California USGS (Menlo Park, Calif.) 69

RDS Alaska University of Alaska 14

RDT Alaska USGS (Menlo Park, Calif.) 27

(RED) Alaska University of Alaska 14

(RED) California USGS (Menlo Park, Calif.) 69

REN Nevada University of Nevada 201

REX Idaho Ricks College 136

(RFR) California USGS (Menlo Park, Calif.) 70

(RFU) Utah University of Utah 314

(RG-SD) South Dakota Teledyne Geotech 290

RGC Colorado Chevron Oil Company 108

(RGD) Alaska USGS (Menlo Park, Calif.) 27

(RGR) California USGS (Menlo Park, Calif.) 69

(RH-NV) Nevada Teledyne Geotech 205

RHA Alabama USGS and Alabama Geological Survey 7

(RHD) Alabama USGS and Alabama Geological Survey 7

(RHU) Utah University of Utah 314
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page Code State Operator Page

(RI-MS) Mississippi Teledyne Geotech 176

RIM Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

RIO New Mexico Los Alamos Scientific Laboratory 220

(RIU) Alaska USGS (Menlo Park, Calif.) 27

(RL-WS) Wisconsin Teledyne Geotech 350

RLO Oklahoma University of Oklahoma 252

RMB Missouri Saint Louis University 179

RMO New York George E. Mercier 236

(RMR) California USGS (Pasadena, Calif.) and C.I.T. 84

RMU Utah USGS (Denver, Colo.) 317

RMW Washington University of Washington 337

(RN-WV) West Virginia Teledyne Geotech 346

ROC New York McQuaid Jesuit High School 237

(ROD) California USGS (Pasadena, Calif.) and C.I.T. 84

ROL Missouri University of Missouri 178

RON Alaska University of Alaska 14

RPK Washington Tera Corporation 340

RRD Puerto Rico Lamont-Doherty Geological Observ. 281

(RS-KY) Kentucky Teledyne Geotech 157

(RSE) California USGS (Pasadena, Calif.) and C.I.T. 84

RSW Washington University of Washington 337

(RT-NM) New Mexico Teledyne Geotech 223

(RTM) California USGS (Menlo Park, Calif.) 67

RUN California USGS (Pasadena, Calif.) and C.I.T. 84

(RUS) California USGS (Menlo Park, Calif.) 66

RUT Nevada California Institute of Technology 210

(RVC) California USGS (Menlo Park, Calif.) 72

RVCM California USGS (Menlo Park, Calif.) 72

(RVM) California 'USGS (Pasadena, Calif.) and C.I.T. 84

RVR California California Institute of Technology 76

(RVR) Colorado USGS (Menlo Park, Calif.) Ill

RVS California USGS (Pasadena, Calif.) and C.I.T. 84

RXF Montana Department of the Army 188

(RY-ND) North Dakota Teledyne Geotech 245

(RYN) California Tera Corporation 54

(RYN) Nevada University of Nevada 201

(RYS) California USGS (Pasadena, Calif.) and C.I.T. 84

(SA2TX) Texas Teledyne Geotech 304

(SA4TX) Texas Teledyne Geotech 304

SAC California USGS (Menlo Park, Calif.) 69

(SAD) California USGS (Pasadena, Calif.) and C.I.T. 84

(SAL) California USGS (Menlo Park, Calif.) 72

SAG California University of California, Berkeley 51

SAU Utah University of Utah 314

SAW Washington University of Washington 337

(SAW) Alaska USGS (Menlo Park, Calif.) 27

(SAW) California USGS (Menlo Park, Calif.) 69

(SBAI) California USGS (Pasadena, Calif.) and C.I.T. 82

SBB California California Institute of Technology 77

SBC California California Institute of Technology 77

(SBCC) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBCD) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBCL) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBLC) California USGS (Pasadena, Calif.) and C.I.T. 84

(SBLG) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBLP) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBSC) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBSM) California USGS (Pasadena, Calif.) and C.I.T. 82

(SBSN) California USGS (Pasadena, Calif.) and C.I.T. 82

SET California USGS (Menlo Park, Calif.) 64

SBU Utah University of Utah 314

4SBVC) California San Bernardino Valley College 89

SBY Alaska USGS (Menlo Park, Calif.) 30

(SCA) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

SCC California University of California, Berkeley 51

(SCF) Alaska University of Alaska 14

SCI California California Institute of Technology 77

SCL California University of Santa Clara 93

SCM Alaska University of Alaska 14

SCN Arizona Sunset Crater National Monument 33

SCP Pennsylvania Pennsylvania State University 272

(SCR) California USGS (Menlo Park, Calif.) 67

SCT Alaska University of Alaska 14

SCU Utah USGS (Denver, Colo.) 318

SCV Virgin Islands Lamont-Doherty Geological Observ.

SCW Washington University of Washington

SCY California California Institute of Technology

(SCZ) California USGS (Menlo Park, Calif.)

(SOW) California California Institute of Technology

(SE-MN) Minnesota Teledyne Geotech

SEA Washington University of Washington

SEC California USGS (Menlo Park, Calif.)

(SEC) Colorado USGS (Menlo Park, Calif.)

(SEG) Alaska USGS (Menlo Park, Calif.)

SEW Alaska USGS (Menlo Park, Calif.)

(SF-AZ) Arizona Teledyne Geotech

SFB California University of California, Berkeley

SFL California USGS (Menlo Park, Calif.)

SFM California Golden Gate Park

SFO New York Lamont-Doherty Geological Observ.

SFR California USGS (Menlo Park, Calif.)

SFT California USGS (Menlo Park, Calif.)

(SG-AZ) Arizona Teledyne Geotech

SGA Alaska USGS (Menlo Park, Calif.)

(SGA) Alaska USGS (Menlo Park, Calif.)

SGC California USGS (Menlo Park, Calif.)

SGL California USGS (Pasadena, Calif.) and C.I.T.

(SGM) California USGS (Menlo Park, Calif.)

SGS South Carolina USGS (Denver, Colo.)

(SH-PA) Pennsylvania Teledyne Geotech

SHA Alabama Spring Hill College

SHC California USGS (Menlo Park, Calif.)

SHG California USGS (Menlo Park, Calif.)

(SHH) California USGS (Pasadena, Calif.) and C.I.T.

(SHQ) California USGS (Menlo Park, Calif.)

(SHR) California USGS (Menlo Park, Calif.)

SHS California University of California, Berkeley

SHS California USCS.GS (Washington, D.C.)

(SHU) Alaska University of Alaska

(SHV) Colorado USGS (Menlo Park, Calif.)

SHW Washington University of Washington

SIG Colorado USGS (Denver, Colo.)

(SII) Alaska University of Alaska

(SIL) California California Institute of Technology

(SIM) Nevada University of Nevada

(SIP) California USGS (Pasadena, Calif.) and C.I.T.

SIT Alaska USGS (Sitka, Alaska)

(SIX) Colorado USGS (Menlo Park, Calif.)

(SJ-TX) Texas Teledyne Geotech

SJG Puerto Rico USGS (Cayey, P.R.)

(SJG) California USGS (Menlo Park, Calif.)

SJGC Puerto Rico USGS (Cayey, P.R.)

SJH California USGS (Menlo Park, Calif.)

SJP Puerto Rico USGS (Cayey, P.R.)

SJQ California California Institute of Technology

SJV Virgin Islands Lamont-Doherty Geological Observ.

(SK-TX) Texas Teledyne Geotech

SKG California USGS (Menlo Park, Calif.)

SKL Alaska USGS (Menlo Park, Calif.)

SKN New York Lamont-Doherty Geological Observ.

(SKN) Alaska USGS (Menlo Park, Calif.)

(SKS) Alaska University of Alaska

SKT Alaska USGS (Menlo Park, Calif.)

(SL1) California USGS (Menlo Park, Calif.)

(SL2) California USGS (Menlo Park, Calif.)

(SL3) California USGS (Menlo Park, Calif.)

(SL4) California USGS (Menlo Park, Calif.)

(SL5) California USGS (Menlo Park, Calif.)

(SL6) California USGS (Menlo Park, Calif.)

(SL7) California USGS (Menlo Park, Calif.)

(SL8) California USGS (Menlo Park, Calif.)

(SLA) California USGS (Menlo Park, Calif.)

SLC Utah University of Utah

SLD California Calif. Department of Water Resources

SLM Missouri Saint Louis University

(SLU) Arizona USGS (Pasadena, Calif.) and C.I.T.

SLV Alaska USGS (Menlo Park, Calif.)

(SLV) Californis USGS (Menlo Psrk, Calif.)

324

337

77

72

77

174

337

69

111

27

28

41

51

68

92

233

72

69

41

28

27

69

84

67

285

274

5

72

65

84

70

70

51

100

14

111

337

104

14

77

201

84

20

111

304

278

68

278

69

278

77

324

305

67

27

233

27

14

27

72

72

72

72

72

72

72

68

69

314

87

179

43

27

65

379
Appendix 3. —Alphabetic listing of station codes—Continued

Code State Operator Page

(SM-TX)

SMA

SMC 

(SHE)

SML 

(SMM)

SMN 

(SMO) 

(SMR)

SMU

SMV

SMW 

(SMW)

SMWM

SMY 

(SN-AZ)

SNC

SND

SNH

SNM 

(SNO) 

(SNPY)

SNR

SNS

SNT 

(SNT) 

(SOD)

SOS 

(SP-1S)

SPD

SPH 

(SPL)

SPM

SPO 

(SPSY)

SPT 

(SPT)

SPU

SPW 

(SQ-IS)

SQU

(SR-OR) 

(SRA)

SRC

SRF

SRM 

(SRMY) 

(SRPD) 

(SRPN) 

(SRPW) 

(SRQ) 

(SRS) 

(SS-TX)

SSH

SS1 

(SSK)

SSL 

(SSN)

SSP 

(SSP)

SST 

(SSV)

ssx

(ST-NV) 

(ST1TX) 

(ST2TX) 

(ST4TX)

STC 

(STF) 

(STG)

STI 

(STJ) 

(STLY)

STM

380

Texas Teledyne Geotech 305

South Carolina USGS (Denver, Colo.) 285

Colorado USGS (Denver, Colo.) 104

California California Institute of Technology 77

Alaska USGS (Menlo Park, Calif.) 27

California USGS (Menlo Park, Calif.) 72

Nevada USGS (Las Vegas, Nev.) 198

California California Institute of Technology 77

California USGS (Menlo Park, Calif.) 72

Utah USGS (Denver, Colo.) 318

Illinois Saint Louis University 147

Washington University of Washington 337

California USGS (Menlo Park, Calif.) 72

California USGS (Menlo Park, Calif.) 72

Alaska NOAA (Palmer, Alaska) 17

Arizona Teledyne Geotech 41

California California Institute of Technology 77

California San Diego State University 90

Alaska USGS (Menlo Park, Calif.) 28

New Mexico N.Mex. Institute of Mining and Tech. 222

California USGS (Menlo Park, Calif.) 67

New York Woodward-Clyde Consultants 239

California USGS (Pasadena, Calif.) and C.l.T. 84

California California Institute of Technology 77

California USGS (Menlo Park, Calif.) 70

California USGS (Menlo Park, Calif.) 69

Nevada University of Nevada 201

California USGS (Menlo Park, Calif.) 69

Alaska Teledyne Geotech 22

New Mexico Los Alamos Scientific Laboratory 220

California USGS (Pasadena, Calif.) and C.l.T. 84

Alaska University of Alaska 15

California USGS (Pasadena, Calif.) and C.l.T. 85

Washington Mount Saint Michael's 339

New York Woodward-Clyde Consultants 239

Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

California USGS (Menlo Park, Calif.) 70

Alaska USGS (Menlo Park, Calif.) 27

Washington University of Washington 337

Alaska Teledyne Geotech 22

Utah University of Utah 314

Oregon Teledyne Geotech 264

California USGS (Menlo Park, Calif.) 66

California USGS (Menlo Park, Calif.) 72

New Mexico N.Mex. Institute of Mining and Tech. 222

New Mexico N.Mex. Institute of Mining and Tech. 222

New York Woodward-Clyde Consultants 239

South Carolina E. I. du Pont de Nemours 283

South Carolina E. I. du Pont de Nemours 283

South Carolina E. I. du Pont de Nemours 283

California USGS (Menlo Park, Calif.) 65

California USGS (Menlo Park, Calif.) 72

Texas Teledyne Geotech 305

Alaska University of Alaska 15

Alaska USGS (Las Vegas, Nev.) 24

California California Institute of Technology 77

Pennsylvania Lamont-Doherty Geological Observ. 276

Alaska USGS (Menlo Park, Calif.) 28

Nevada USGS (Las Vegas, Nev.) 198

Alaska USGS (Menlo Park, Calif.) 28

Alaska USGS (Menlo Park, Calif.) 28

California California Institute of Technology 77

Nevada USGS (Las Vegas, Nev.) 198

Nevada Teledyne Geotech 205

Texas Teledyne Geotech 305

Texas Teledyne Geotech 305

Texas Teledyne Geotech 305

California DSGS (Menlo Park, Calif.) 72

California USGS (Menlo Park, Calif.) 68

Alaska USGS (Menlo Park, Calif.) 28

Idaho University of Utah 142

California USGS (Menlo Park, Calif.) 69

New York Woodward-Clyde Consultants 239

Nevada University of Nevada 201

Code State Operator Page

(STN) California USGS (Menlo Park, Calif.) 70

STP California USGS (Pasadena, Calif.) and C.l.T. 85

(STQ) California USGS (Menlo Park, Calif.) 65

STT Washington Gerald Marshall 333

(STV) California USGS (Menlo Park, Calif.) 69

STW Washington University of Washington 337

STX Nevada USGS (Las Vegas, Nev.) 199

STY Alaska USGS (Menlo Park, Calif.) 28

(SU-VA) Virginia Teledyne Geotech 332

SUA Alaska USGS (Menlo Park, Calif.) 28

(SUF) California USGS (Pasadena, Calif.) and C.l.T. 85

SUG Michigan University of Michigan 170

SUK Alaska USGS (Menlo Park, Calif.) 28

(SUP) California USGS (Pasadena, Calif.) and C.l.T. 85

SUU Utah University of Utah 314

(SV-AZ) Arizona Teledyne Geotech 41

SVC California USGS (Menlo Park, Calif.) 66

(SVS) South Carolina USGS (Denver, Colo.) 285

SVW Alaska NOAA (Palmer, Alaska) 17

(SW-MA) Montana Teledyne Geotech 191

(SWB) California USGS (Menlo Park, Calif.) 65

(SWC) Colorado USGS (Menlo Park, Calif.) Ill

(SWD) Alaska USGS (Menlo Park, Calif.) 28

SWM California California Institute of Technology 77

(SWN) Nevada Univeraity of Nevada 201

SWP Montana University of Montana 189

(SWR) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(SX-SD) South Dakota Teledyne Geotech 290

(SY-SD) South Dakota Teledyne Geotech 290

SYP California California Institute of Technology 77

SYR Washington University of Washington 337

(SZ-NV) Nevada Teledyne Geotech 205

(TAN) Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

(TAY) California USGS (Menlo Park, Calif.) 72

TBR New York Lamont-Doherty Geological Observ. 233

(TC-NM) New Mexico Teledyne Geotech 223

TCC California California Institute of Technology 77

(TCEC) Texas USGS (Menlo Park, Calif.) 312

(TCNE) Texas USGS (Menlo Park, Calif.) 312

(TCNO) Texas USGS (Menlo Park, Calif.) 312

(TCNW) Texas USGS (Menlo Park, Calif.) 312

(TCSE) Texas USGS (Menlo Park, Calif.) 312

(TCSW) Texas USGS (Menlo Park, Calif.) 312

(TCWC) Texas USGS (Menlo Park, Calif.) 312

(TD-NM) New Mexico Teledyne Geotech 223

TDC Colorado NOAA (Boulder, Colo.) 101

TEE Montana University of Montana 189

(TEE) Nevada University of Nevada 201

(TF-CL) California Teledyne Geotech 96

TFO Arizona AFTAC 34

(TG-IS) Hawaii-Pacific Teledyne Geotech 134

(TGR) California USGS (Menlo Park, Calif.) 69

THI Indiana Gerald J. Shea 149

(THI) Indiana Gerald J. Shea 149

THO Arizona Willard L. Groene 35

(THR) California California Institute of Technology 77

TIN California California Institute of Technology 77

(TIT) California Tera Corporation 54

TJC Colorado Trinidad State Junior College 109

(TK-WA) Washington Teledyne Geotech 341

(TL-WY) Wyoming Teledyne Geotech 353

(TLD) Colorado Colorado School of Mines 106

TLK Alaska USGS (Menlo Park, Calif.) 28

(TMB) California USGS (Pasadena, Calif.) and C.l.T. 85

TMI Idaho USGS (Las Vegas, Nev.) 138

TMN Nevada USGS (Las Vegas, Nev.) 199

(TMN) California USGS (Menlo Park, Calif.) 70

TMT Connecticut Weston Obaervatory 115

(TN-CL) California Teledyne Geotech 96

TNA Alaska University of Alaska . 15

INK California University of Nevada 99

TNN Alaska University of Alaska 15

TNP Nevada University of Nevada 201

(TO-OK) Oklahoma Teledyne Geotech 255
Appendix 3.—Alphabetic listing of station codes—Continued

Code State Operator Page

TOA Alaska NOAA (Palmer, Alaska) 17

(TP-NV) Nevada Teledyne Geotech 205

TPC California California Institute of Technology 77

TPH Nevada Sandia Laboratories 203

(TPO) California California Institute of Technology 77

(TPR) California University of Southern California 61

TPV Nevada USGS (Las Vegas, Nev.) 199

TRC California USGS (Menlo Park, Calif.) 72

TRM Maine Weston Observatory 165

TRU Hawaii-Pacific USGS (Agana, Guam) 132

TRY New York Rensselaer Polytechnic Institute 238

(TS-ND) North Dakota Teledyne Geotech 245

(TSI) Alaska USGS (Menlo Park, Calif.) 28

TSL Arizona Los Alamos Lab and Navajo Comm. Col. 37

TSO Oklahoma Senturion Sciences, Inc. 254

TSP New Mexico Los Alamos Scientific Laboratory 220

TSV Nevada USGS (Las Vegas, Nev.) 199

TTA Alaska NOAA (Palmer, Alaska) 17

TTM California USGS (Pasadena, Calif.) and C.I.T. 85

TTP New Mexico Los Alamos Scientific Laboratory 220

(TU-PA) Pennsylvania Teledyne Geotech 274

TUC Arizona Arizona Bureau of Mines 38

TUL Oklahoma University of Oklahoma 252

TUM Washington University of Washington 337

TUO Arizona Arizona Bureau of Mines 38

TUS New York Lamont-Doherty Geological Observ. 233

TUT Arizona Arizona Bureau of Mines 38

TWL California California Institute of Technology 77

TWN California USGS (Menlo Park, Calif.) 72

(TXC) Colorado USGS (Menlo Park, Calif.) Ill

(TYL) California USGS (Menlo Park, Calif.) 72

TYS Missouri Saint Louis University 179

(U4) Wyoming U.S. Air Force 357

(U6) Wyoming U.S. Air Force 357

UBO Utah University of Utah 314

(UCS) California USGS (Menlo Park, Calif.) 69

UCT Connecticut Weston Observatory 115

(UK-OR) Oregon Teledyne Geotech 264

UKI California NOAA (Ukiah, Calif.) 94

(UKL) Alaska University of Alaska 15

UNA Alaska USGS (Menlo Park, Calif.) 30

UOA Arizona University of Arizona 39

(UOA) Alabama USGS and Alabama Geological Survey 7

USC California University of Southern California 61

(USF) California University of California, Berkeley 51

UVN Nevada University of Nevada 201

UWE Hawaii-Pacific USGS (Hawaii National Park, Hawaii) 129

UWL New York Lamont-Doherty Geological Observ. 233

UWM Wisconsin University of Wisconsin at Milwaukee 348

(VGR) California California Institute of Technology 77

VIL Maryland Natl. Earthquake Information Center 167

VIN California University of California, Berkeley 51

VIT California University of California, Berkeley 51

VLZ Alaska USGS (Menlo Park, Calif.) 28

(VN-UT) Utah Teledyne Geotech 319

(VO-IO) Iowa Teledyne Geotech 152

(VOL) New Mexico USGS (Albuquerque, N.Mex.) 217

VPD California California Institute of Technology 77

(VPE) California USGS (Menlo Park, Calif.) 72

VPEM California USGS (Menlo Park, Calif.) 72

VPK California University of Nevada 99

VQS Puerto Rico USGS (Cayey, P.R.) 278

VSC South Carolina USGS (Denver, Colo.) 285

VST Virgin Islands Lamont-Doherty Geological Observ. 324

(VST) California California Institute of Technology 77

(VT-OR) Oregon Teledyne Geotech 264

VTG Washington University of Washington 337

(VYD) California USGS (Menlo Park, Calif.) 65

VZS Alaska USGS (Menlo Park, Calif.) 28

VZW Alaska USGS (Menlo Park, Calif.) 28

(WA-OK) Oklahoma Teledyne Geotech 255

(WAC) South Carolina USGS (Denver, Colo.) 285

WAH Washington University of Washington 337

WAL Idaho U.S. Bureau of Mines 143

Code State Operator Page

(WAR) California USGS (Menlo Park, Calif.)

WAS D.C. Natl. Earthquake Information Center

(WAT) Washington University of Washington

(WAX) Alaska USGS (Menlo Park, Calif.)

WAY Pennsylvania Waynesburg College

WBI Idaho University of Montana

WBW Washington University of Washington

WCK Kentucky Saint Louis University

WCM Montana University of Montana

WCN Nevada University of Nevada

WDC California University of California, Berkeley

WDS California USGS (Menlo Park, Calif.)

WDY California California Institute of Technology

(WEL) California USGS (Pasadena, Calif.) and C.I.T.

(WEN) Washington University of Washington

WES Massachusetts Weston Observatory

(WF-MN) Minnesota Teledyne Geotech

WFF Florida U.S. Department of the Navy

WFM Massachusetts M.I.T. and Harvard University

(WGLY) New York Woodward-Clyde Consultants

WGW Washington University of Washington

WH2 California USGS (Pasadena, Calif.) and C.I.T.

WHA Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(WHA) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

WHI Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

WHM Montana University of Montana

(WHP) California USGS (Pasadena, Calif.) and C.I.T.

WHU Utah University of Utah

(WHW) California USGS (Menlo Park, Calif.)

(WI-NV) Nevada Teledyne Geotech

(WIS) California USGS (Pasadena, Calif.) and C.I.T.

(WIU) Utah University of Utah

WIW Washington University of Washington

WKC California Tera Corporation

WKE Hawaii-Pacific University of Hawaii

WKR California USGS (Menlo Park, Calif.)

WLA Arkansas Saint Louis University

(WLD) Nevada University of Nevada

WLG Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(WLI) New York Lamont-Doherty Geological Observ.

WLK California USGS (Pasadena, Calif.) and C.I.T.

WLM Alaska USGS (Menlo Park, Calif.)

(WLO) Oklahoma University of Oklahoma

(WM-AZ) Arizona Teledyne Geotech

WMA New Mexico USGS (Albuquerque, N.Mex.)

(WML) California USGS (Pasadena, Calif.) and C.I.T.

WMN Nevada University of Nevada

WMO Oklahoma AFTAC

WMU Utah University of Utah

(WN-SD) South Dakota Teledyne Geotech

WNC North Carolina Carolina Power and Light Company

WND New York Lamont-Doherty Geological Observ.

(WNH) New Hampshire Massachusetts Inst. of Technology

WNW Washington University of Washington

WNY New York Lamont-Doherty Geological Observ.

(WO-AZ) Arizona Teledyne Geotech

(WP-TX) Texas Teledyne Geotech

WPH Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

WPM Michigan University of Michigan

WPR New York Lamont-Doherty Geological Observ.

(WPT) Hawaii-Pacific USGS (Hawaii National Park, Hawaii)

(WQ-IL) Illinois Teledyne Geotech

(WR-AR) Arkansas Teledyne Geotech

WRC California California Institute of Technology

WRD Washington University of Washington

WRG Alaska USGS (Menlo Park, Calif.)

WSC Maryland Natl. Earthquake Information Center

WSN Nevada USGS (Las Vegas, Nev.)

WSR Nevada USGS (Las Vegas, Nev.)

(WT-TN) Tennessee Teledyne Geotech

WTC Colorado Colorado School of Mines

(WTN) Colorado Colorado School of Mines

WTR Maine Colby College

WTW Wyoming USGS (Menlo Park, Calif.)

72

120

337

28

273

139

337

159

189

201

51

69

77

85

337

169

174

122

168

239

337

85

129

129

129

189

85

314

70

205

85

314

337

54

131

72

48

201

129

233

85

28

252

41

217

85

201

251

314

290

242

233

212

337

233

41

305

129

170

233

129

146

46

77

337

28

167

199

199

295

106

106

162

355

381
Appendix 3.—Alphabetic listing of station codes—Continued

Code

(WTX)

(WW-UT)

(WWR)

WYO

(WZ-NV1

(Y)

(YA-WA)

YAH

(YCB)

YCM

(YEG)

(YER)

(YKG)

YKM

YKT

(YMD)

(YPBB)

(YPCJ)

(YPDC )

(YPEE)

(YPGC)

(YPHB)

(YPHR)

State

New Mexico

Utah

California

Wyoming

Nevada

Washington

Washington

Alaska

Alaska

Montana

California

Nevada

Alaska

Montana

Alaska

Arizona

Montana

Wyoming

Montana

Wyoming

Montana

Montana

Montana

Operator

USGS (Albuquerque, N.Mex.)

Teledyne Geotech

California Institute of Technology

U.S. Air Force

Teledyne Geotech

USGS (Menlo Park, Calif.)

Teledyne Geotech

USGS (Menlo Park, Calif.)

University of Alaska

University of Montana

USGS (Pasadena, Calif.) and C.I.T.

University of Calif., Berkeley

USGS (Menlo Park, Calif.)

Department of the Army

USGS (Menlo Park, Calif.)

USGS (Pasadena, Calif.) and C.I.T.

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

USGS (Menlo Park, Calif.)

Page

217

319

77

357

205

343

341

28

15

189

85

204

28

188

28

43

193

355

193

355

193

193

193

Code

(YPLK)

(YPMC)

(YPMF)

(YPMH)

(YPMJ)

(YPML)

(YPMV)

(YPNG)

(YPNJ)

(YPOF)

(YPPC)

(YPPR)

(YPRL)

(YPSE)

(YPSG)

(YPTC)

(YPTS)

(YPWT)

(YPWY)

(YR-CL)

(YTT)

ZOX

ZZT

State

Wyoming

Wyoming

Idaho

Wyoming

Wyoming

Wyoming

Wyoming

Wyoming

Wyoming

Wyoming

Wyoming

Wyoming

Montana

Wyoming

Wyoming

Wyoming

Idaho

Wyoming

Montana

California

Alaska

Nevada

Tennessee

Operator

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

USGS

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

(Menlo

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

Park

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

, Calif.)

Teledyne Geotech

USGS

USGS

Saint

(Menlo Park

(Las Vegas,

Louis

, Calif.)

Nev.)

University

Page

355

355

140

355

355

355

355

355

355

355

355

355

193

355

355

355

140

355

193

96

28

199

297

382
Appendix 4.—Regional maps of stations

Figure 12.—Stations operating in mid-1977 in Connecticut, Maine, Massachusetts, New Hampshire, New 

Jersey, New York, Pennsylvania, Rhode Island, and Vermont.

'fNED

MISSOURI

ARK ^ /ANKT

/OK 

l^ET___

-' MISSISSIPPI 'AIARAMA

r , ALABAMA , G E O R G I A ~X CAROLINA

I_________/ I___________| \_____ I __\

Figure 13. Stations operating in mid-1977 in Delaware, District of Columbia, Kentucky, Maryland, 

North Carolina, Tennessee, Virginia, and West Virginia.

383
Appendix 4.—Regional maps of stations—Continued

Figure 14.—Stations operating in mid-1977 in Alabama, Florida, Georgia, Mississippi, and South 

Carolina.

Desecheo IDE

IMO

o Mona

Anegada

Vieques

Caribbean Sea

KILOMETERS 100

Figure 15.—Stations operating in mid-1977 in Puerto Rico and U.S. Virgin Islands.

384
Appendix 4.—Regional maps of stations—Continued

Figure 16.—Stations operating in mid-1977 in Illinois, Indiana, Michigan, Ohio, and Wisconsin.

385
Appendix 4.—Regional maps of stations—Continued

99" 8" 95" 93'

COLORADO

D AKOTA MINNESOTA W1SC ONSIN

IOWA

—

NEBRASKA

ILLINOIS

MHK \

KANSAS

TVS ASLM 

I MISSOURI A ('

' c\ik» \^

ROL A

CGM DON

TEXAS |

OKLAHOMA ARKANSAS /

i ______ i — ^

A r

DWM X

LST ,J 

ATj

Figure 17.—Stations operating in mid-1977 in Iowa, Kansas, Minnesota, Missouri, Nebraska, North 

Dakota, and South Dakota.

Figure 18.—Stations operating In mld-1977 In Arkansas, Loulsana, Oklahoma, and Texas.

386
Appendix 4.—Regional maps of stations—Continued

Figure 19.—Stations operating in mid-1977 in Idaho, Montana, Oregon, Washington, and Wyoming.

119° 117" 115° 113° 111" 109" 107° 105° 103°

OREGON 1 NEBR

TEXAS

KILOMETERS 500 

_J

Figure 20.—Stations operating in mid-1977 in Arizona, Colorado, Nevada, New Mexico, and Utah.

387

Appendix 4.—Regional maps of stations—Continued

Pacific Ocean

KILOMETERS

Figure 23.—Stations operating in mid-1977 in Alaska.

159° 156° 157° 156°

OPA.

MOLAKAI

LANAI

o

,HIL

KILOMETERS

-WHA •$£

KHU ^T \\VKAE HLK 

3L \\ X RWH HVO 

. <NH MKA 

'SPT HLP NGH 

NPH 

OUT 

PHO 

PUH 

RIM 

SPT 

UWE 

WLG

Figure 24.—Stations operating in mid-1977 in Hawaii. 

& U.S. GOVERNMENT PRINTING OFFICE: 1978 777-102/7 REGION NO. 8

389