Catalogue of U.S. Geological Survey 

Strong-Motion Records, 1994

U.S. GEOLOGICAL SURVEY CIRCULAR 1152
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Catalogue of

U.S. Geological Survey

Strong-Motion Records, 1994

Compiled by Josephine C. Switzer, 

Walter L. Jungblut, and Ronald L. Porcella

U.S. GEOLOGICAL SURVEY CIRCULAR 1152
U.S DEPARTMENT OF THE INTERIOR 

BRUCE BABBITT, Secretary

U.S. GEOLOGICAL SURVEY 

Mark Schaefer, Interim Director

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by

the U.S. Government

Library of Congress Cataloging Card No. 83-600616
PREFACE

The first seismic engineering program in the United States was administered by the 

Seismological Field Survey (SFS) of the U.S. Coast and Geodetic Survey. This program was begun in 

1931 and essentially remained the responsibility of the SFS until 1973, when the U.S. Geological Survey 

(USGS) assimilated the program into its Earthquake Hazards Reduction Program. Currently, the 

National Strong-Motion Program (NSMP) operates a cooperative network containing approximately 900 

accelerographs in 39 states and Puerto Rico. This network is administered by the USGS in cooperation 

with both private industry and numerous Federal, State, and local agencies and organizations. Major 

contributors include the Army Corps of Engineers, the Department of Veterans Affairs, and the 

Metropolitan Water District of Southern California. Primary objectives of the program are to record 

strong ground motions and the response of representative engineered structures during moderate to large 

earthquakes, and to disseminate the resultant data and information about the records, sites, and structures 

to the earthquake engineering research and design community.

This catalogue continues in a revised format the yearly publication "Strong-Motion Program 

Report, January-December [year]"; it is a continuation of the table 1 summary of accelerograms 

recovered at NSMP stations that had been published in that format since 1974. This report includes all 

strong-motion recordings recovered during 1994. Unless otherwise referenced, earthquake data and 

information are taken from the "Preliminary Determination of Epicenters," published weekly by the U.S. 

Geological Survey.

Ill
CONTENTS

Preface III 

Introduction 1

TABLE

1. National Strong-Motion Program accelerograph records recovered during 1994 2

IV
Catalogue of U.S. Geological Survey 

Strong-Motion Records, 1994

Compiled by Josephine C. Switzer, Walter L. Jungblut, 

and Ronald L. Porcella

INTRODUCTION

During January-December 1994 more than 825 accelerograph records were recovered from 

permanent National Strong-Motion Program (NSMP) stations operated by the U.S. Geological Survey; 

approximately 780 of these recordings are related to the January 17 Northridge earthquake and 

aftershocks. In comparison, the NSMP national network has produced an annual average of about 300 

recordings for the 20-year period 1974 through 1993.

The nearly 800 Northridge accelerograms include strong-motion data from about 150 

accelerographs located at nearly 100 permanent stations throughout the greater Los Angeles region. Th<? 

data were recorded at more than 30 high-rise buildings, 7 major hospitals, 12 dams, 6 fire stations, 1 

bridge, 7 water/power distribution facilities, and more than 60 ground sites. The data include record^ 

from two base-isolated structures: a 3-story residence in West Los Angeles and a 165-meter-long, steeltruss bridge, which supports a major water pipeline that crosses the Santa Ana River southwest of 

Riverside.

Maximum ground accelerations at 11 sites within a 30-km epicentral distance exceeded 0.25 g; 

Skinner Dam, northeast of Temecula, at a distance of more than 150 km, was the most distant NSMP 

station triggered during the main shock. Additional records were recovered from strong-motion station^ 

operated by the California Division of Mines and Geology, the University of Southern California, the Lo' 

Angeles Department of Water and Power, the California Department of Water Resources, Southern 

California Edison, Caltech, and the owners of numerous large buildings, which were instrumented in 

accordance with the Uniform Building Code or the Los Angeles building code.

Records were also recovered from instrumentation triggered by several non-Northridge events in 

California: an ML= 4.2 earthquake near Eureka on January 20, an ML= 4.2 event near Berkeley on Jun" 

26, an ML= 6.0 event in eastern Calif, on September 12, and an ML= 5.0 event near Parkfield on 

December 20 (see table 1). Other events recorded during 1994 include an ML= 4.1 event in Washington 

State on September 10, and an MB= 5.3 earthquake on the Big Island of Hawaii on February 1. Th? 

Berkeley event of June 26 triggered 5 permanent stations, including two large structure arrays; maximum 

ground acceleration recorded in Berkeley was 0.12 g. The Hawaii earthquake of February 1 triggered 

accelerographs at 12 permanent stations on the Big Island; maximum ground accelerations wen 

generally in the range 0.05-0.1 g.
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199^

[Station owners: ACOE, U.S. Army Corps of Engineers; CDWR, California Department of Water Resources; DOE, 

Department of Energy; MWD, Metropolitan Water District of Southern California; OWNR, building owner; USGS, U.S. 

Geological Survey; VA, U.S. Department of Veterans Affairs. Instrument trigger time is in minutes and seconds after the 

hour listed in earthquake column; P-wave arrival time is listed in brackets. S-minus trigger denotes S-wave-arrival-minus 

trigger-time interval (S-t), or S-wave-minus-P-wave-arrival time interval (S-P, in brackets). Direction is of case acceleration 

for upward trace deflection on accelerogram; horizontal components are listed as azimuth, and vertical components as "up" 

or "down." Maximum amplitude is peak acceleration recorded at ground level on one vertical and two orthogonal 

horizontal components unless otherwise noted. Numbers in parentheses refer to footnotes at end of table.]

Earthquake

9 January 1994 

2300:58.9 G.m.t. 

Southern Calif. 

33.988N, 118.504W 

Magnitude 3.7 ML

Station Name 

(Owner)

Los Angeles 

Wadsworth V A Hospital 

(VA) North Ground Site

Coordinates 

(Lat. °N 

Long. °W)

34.054 

118.453

Trigger 

time

01:06.4

S-minus 

trigger 

( )

2.4

Direction 

(az)

325 

Up 

235

Maximum 

amplitude

to

0.05 

0.02 

0.03

10 January 1994 

0612:03.8 G.m.t. 

Southern Calif. 

33.993N, 118.492W 

Magnitude 3.1 ML

6 July 1993- 

12 January 1994 

Southern Calif. 

Epicenters and 

magnitudes unknown

Los Angeles 34.054 

Wadsworth VA Hospital 118.453 

(VA) North Ground Site

Los Angeles 34.040 

1955 1/2 Purdue Ave. 118.445 

(USGS) 

Basement

Third floor

12:06.4 2.3

(3) 2.2

235 

Up 

145

235 

Up 

145

(1)

0.04

0.02

0.08

0.02

0.07

0.06

6 May 1993- 

16 January 1994 

Southern Calif. 

Epicenters and 

magnitudes unknown

235 

Up 

145

0.02

0.04

0.05

1 Note: Two each and one each additional records recovered at basement and third 

floor, respectively, at 1955 1/2 Purdue Ave.

Los Angeles 33.783 

600 City Parkway West 117.896 

(OWNR) llth Floor

(3) (2)

(3) (2)

360 

Up 

270

360 

Up

270

0.01

0.07

0.01

0.01

0.06

0.01
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

17 January 1994

1230:55.3 G.m.t.

Southern Calif.

34.211N, 118.538W

Magnitude 6.6 Ms

(Northridge

Earthquake)

Station Name 

(Owner)

Los Angeles

8436 West 3rd Street

(OWNR) Roof (10th level)

Los Angeles

6301 Owensmouth Ave.

(OWNR) Roof (12)

Los Angeles

Sepulveda VA Hospital

[VA] Ground

Los Angeles

5805 Sepulveda Blvd.

(OWNR) Roof (9)

Los Angeles

16000 Ventura Blvd.

(OWNR) Roof (13)

Los Angeles

15250 Ventura Blvd.

(OWNR) Roof (13)

Jensen Filter Plant

[MWD]

Admin. Bldg Basement

Generator Building

Reservoir Roof

Sepulveda Canyon

Spillway Building

[MWD] Ground

Topanga

Fire Station

(USGS) Ground

Coordinates 

(Lat. °N 

Long. °W)

34.072

118.375

34.185

118.584

34.249

118.475

34.175

118.465

34.156

118.480

34.157

118.476

34.312

118.496

34.313

118.498

34.309

118.499

34.097

118.475

34.084

118.599

Trigger S-minus 

time trigger 

(s)

(3) 3.9

(3) 2.8

(3) 1.2

(3) 1.0

(3) 3.0

(3) 3.0

(3) 1.6

(3) 0.4

(3) 1.1

(3) 2.8

(3) 0.7

Direction 

(az)

360

Up

270

360

Up

270

360

Up

270

360

Up

270

120

Up

030

360

Up

270

022

Up

292

022

Up

292

022

Up

292

166

Up

076

360

Up

270

Maximum 

amplitude

(?)

C65

C,23

C-56

C-48

C.48

0.39

0.94

0.48

0.74

0.76

0.50

0.64

0.37

0.37

0.41

0.61

0.43

0.27

0.40

0.40

0.62

0.56

0.52

0.98

0.65

0.51

0.84

0.26

0.16

0.43

0.34

0.19

0.21

Note: Eight additional records^ recovered at Topanga fire station.

Los Angeles

10660 Wilshire Blvd.

(OWNR) Roof (19)

34.061

118.434

(3) 1.6 160

Up

070

0.43

0.51

1.00
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 19*^4

Earthquake Station Name 

(Owner)

Santa Susana

Energy Tech. Eng. Ctr. 

[DOE] 

Bldg. 026, Ground

Bldg. 462, 1st Floor

Bldg. 462, 6th Floor

Bldg. 463, Roof

Freefield

Coordinates Trigger S-minus Direction Maximum 

(Lat. °N time trigger (az) amplitude 

Long. °W) (s) (g)

34.232 (3) (2) 

118.710

34.230 (3) (2) 

118.712

34.230 (3) (2) 

118.712

34.230 (3) (2) 

118.713

34.231 (3) (2) 

118.713

325 

Up 

235

090 

Up 

360

090 

Up 

360

090 

Up 

360

090 

Up 

360

Los Angeles 34.063 (3) 3.1 285 

Brentwood VA Hospital 118.463 Up 

[VA] Ground 195 

Note: Four additional records* recovered at Brentwood VA hospital.

Los Angeles 34.058 (3) 5.0 

10920 Wilshire Blvd. 118.443 

(OWNR) 19th Level 

Note: Two additional records* recovered at 10920 Wilshire Blvd.,

070 

Up 

340 

, 19thlev-l.

Los Angeles 34.060 (3) 3.2 252 

10751 Wilshire Blvd. 118.438 Up 

(OWNR) Roof (12) 162 

Note: Thirty-one additional records* recovered at 10751 Wilshire Blvd., roof.

Los Angeles 

Wadsworth VA Hospital 

(USGS) North Ground Site

Los Angeles 

12121 Wilshire Blvd. 

(OWNR) Roof (15)

34.054 31:00.6 3.6 

118.453

[32.01.2] [4.3]

34.044 (3) 4.0 

118.467

325 

Up 

235

325 

Up 

235

226 

Up 

136

0.32 

0.27

0.24 

0.23 

0.34

0.41 

0.40 

0.60

0.41 

0.66 

0.76

0.29 

0.16 

0.23

0.16 

0.14 

0.18

0.14 

0.24 

0.17

0.40 

0.39 

0.30

0.26 

0.17 

0.26

0.07 

0.06 

0.07

0.27 

0.37 

0.32

Note: Twelve additional records* recovered at 12121 Wilshire Blvd., roof.
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name

(Owner)

Los Angeles

Wadsworth VA Hospital

(USGS) South Ground Site

Coordinates

(Lat. °N

Long. °W)

34.050

118.448

Trigger

time

31:01.1

[32:02.2]

S-minus

trigger

(s)

3.8

[4.0]

Direction

(az)

325

Up

235

325

Up

235

Maximum

amplitude

Or)

0.39

0.14

0.30

0.09

0.02

0.03

Los Angeles 34.053 

Wadsworth V A Hospital 118.452 

(VA) Structure Array 

Ch. 1 - 6th Floor, North

2 - 6th Floor, North-center

3 - 6th Floor, Center

4 - 6th Floor, Center

5 - 6th Floor, South

6 - 6th Floor, South

7 - Basement, North-center

8 - Basement, North-center

9 - Basement, North-center

(3) 2.6

235 

235 

235 

055 

055 

335 

325 

235 

Down

0.56

0.44

0.46

0.46

0.46

0.49

0.21

0.22

0.09

Los Angeles 34.059 (3) 4.0 320 0.31

2029 Century Park East 118.413 Up 0.46

(OWNR) 43rd Floor 230 0.32

Note: Eleven additional records1 recovered at 2029 Century Park East, 43rd f'oor.

Malibu Canyon 34.078 

Monte Nido Fire Station 118.693 

(USGS) Ground

Los Angeles 34.057 

2121 Ave. of the Stars 118.414 

(OWNR) Roof (36)

Los Angeles 34.071 

444 S. San Vicente 118.374 

(OWNR) Roof (12)

Los Angeles 34.106 

2005 N. Highland Ave. 118.336 

(OWNR) Roof (8)

Los Angeles 34.063 

600 S. Commonwealth 118.284 

(OWNR) 19th Floor

Los Angeles 34.098 

1526 N. Edgemont St. 118.294 

(OWNR) Roof (8)

31:00.2 3.2

[32:01.3] [5.0]

(3) 2.8

(3) 4.3

(3) 2.0

(3) 4.8

(3) 0.8

360 

Up 

270

330 

Up 

240

335 

Up 

245

360 

Up 

270

028 

Up 

298

090 

Up 

360

0.20

0.13

0.17

0.43

0.63

0.37

0.55

0.31

0.64

0.36

0.21

0.42

0.24

0.22

0.17

0.84

0.27

0.78
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

Los Angeles 

1955 1/2 Purdue Ave. 

(USGS) 

Basement

1st Level

3rd Level

Coordinates Trigger S-minus Direction Maximum 

(Lat. °N time trigger (az) amplitude 

Long. °W) (s) fc)

34.040 

118.445

(3) 4.1

Los Angeles 34.118 (3) 3.3 

Griffith Observatory 118.299 

(USGS) Ground 

Note: Two additional records* recovered at Griffith Observatory.

235

Up 

145

235

Up 

145

235

Up 

145

360 

Up 

270

Los Angeles 34.063 (3) 4.1 180 

4929 Wilshire Blvd. 118.337 Up 

(OWNR)Roof(ll) 090 

Note: Thirteen additional records* recovered at 4929 Wilshire Blvd., roof.

Los Angeles 34.060 (3) 4.8 360 

695 S. Vermont Ave. 118.290 Up 

(OWNR) 18th Floor 270 

Note: Four additional records* recovered at 695 S. Vermont Ave. , 18th floor.

Los Angeles 

1100 Wilshire Blvd. 

(USGS) Bsmt. 3 NE

Los Angeles 

1100 Wilshire Blvd. 

(USGS) Bsmt. 3 SE

34.052 

118.263

34.052 

118.263

31:03.4 3.7

31:03.4 3.7

298 

Up 

208

298 

Up 

208

Los Angeles 34.053 (3) 5.3 083 

333 South Hope St. 118.252 Up 

(OWNR) 55th Floor 353 

Note: Nine additional records* recovered at 333 South Hope St., 55th floor.

Los Angeles 34.049 (3) 5.0 045 

500 S. Grand Ave. 118.252 Up 

(OWNR) 25th Level 315 

Note: Four additional records* recovered at 500 S. Grand Ave., 25th level.

Los Angeles 

1100 Wilshire Blvd. 

(USGS) Bsmt. 4 NW

34.052 

118.263

31:03.4 3.7 298 

Up 

208

0.44

0.16 

0.39

0.50

0.48 

0.49

0.63

0.46 

0.46

0.18 

0.15 

0.29

0.42 

0.31 

0.34

0.12 

0.19 

0.11

0.13 

0.09 

0.15

0.14 

0.07 

0.10

0.11 

0.18 

0.11

0.19 

0.17 

0.17

0.11 

0.06 

0.12
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger S-minus 

(Owner) (Lat. °N time trigger 

Long. °W) (s)

Los Angeles 34.052 31:03.3 3.7 

1100 Wilshire Blvd. 118.263

(USGS) Structure Array 

Ch. 1 - 12th Floor North

2 - 12th Floor North

3 - 12th Floor South

4 - 13th Floor North

5 - 13th Floor North

6 - 13th Floor South

7 - 32nd Floor North

8 - 32nd Floor North

9 - 32nd Floor South

10 - Ground Floor North

11 - Ground Floor North

12 - Ground Floor South

Los Angeles 34.067 (3) 3.7 

1111 Sunset Blvd. 118.248

[MWD] 

Basement

4th Floor

Direction 

(az)

298

208

208

298

208

208

298

208

208

298

208

208

348

Up 

258

348

Up 

258

Maximum 

amplitude

(?)

0.16

0.22

0.16

0.16

0.28

0.16

0.14

0.35

0.16

0.18

0.11

0.19

0.13

0.06 

0.13

0.17

0.09 

0.18

Roof (8) 348 0.23

Up 0.16 

258 0.23

Note: One each additional record^ recovered at 1111 Sunset Blvd., basement, 

4th floor, and roof.

Los Angeles 34.050 (3) 4.2 045 

520 S. Grand Ave. 118.252 Up 

(OWNR) llth Level 315 

Note: Four additional records^ recovered at 520 S. Grand Ave., llth level.

0.15

0.13

0.24

Los Angeles 34.039 (3) 5.2 307 0.13 

1150 South Hill Street 118.259 Up 0.15 

(OWNR) 10th Floor 217 0.08 

Note: Four additional records^ recovered at 1150 South Hill St., 10th floor.

Burbank 34.152 

3601 W. Olive Ave 118.337 

(OWNR) Roof (9)

Lawndale 33.895 

15000 Aviation Blvd. 118.377 

(USGS) Ground

(3)

(3)

3.2

3.7

360

Up 

270

360

Up 

270

0.56

0.81 

0.52

0.18

0.09 

0.13
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199 ^

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum 

(Owner) (Lat. °N time trigger (az) amplitude 

Long. °W) (s) (g)

Los Angeles 33.946 (3) 3.4 270 0.14 

6101 Century Blvd. 118.391 Up 0.10 

(OWNR) 15th Level 180 0.18 

Note: Three additional records^ recovered at 6101 Century Blvd., 15th level.

Los Angeles 33.945 (3) 5.2 

5250 Century Blvd. 118.372 

(OWNR) Roof (8) 

Note: Three additional records^ recovered at 5250 Century Blvd

090 

Up 

360 

., roof.

Los Angeles 34.052 (3) 5.5 120 

255 E. Temple St. 118.237 Up 

(OWNR) 21st Level 030 

Note: Eight additional records1 recovered at 255 E. Temple St., 21st level.

Pasadena (Analog) 34.136 (3) 5.1 

535 S. Wilson Ave. 118.127 

(USGS) Ground

Pasadena (Digital) 34.136 (3) (2) 

535 S. Wilson Ave. 118.127 

(USGS) Ground

Los Angeles 33.996 (3) 5.1 

Bulk Mail Facility (Bell) 118.162 

(USGS) Ground

Alhambra 34.085 31:04.2 4.5

900 South Fremont Ave. 118.149

(USGS) Structure Array 

Ch. 1 - 12th Floor Center

2 - 12th Floor Center

3 - 12th Floor North end

4 - 6th Floor Center

5 - 6th Floor Center

6 - 6th Floor North end

7 - 2nd Floor Center

8 - 2nd Floor Center

9 - 2nd Floor North end

10 - Basement Center

11 - Basement Center 

12 - Basement Center

Los Angeles 33.855 (3) 5.4 

19191 S. Vermont 118.291 

(OWNR) Roof (11)

Chantry Flat 34.196 (3) (2) 

Forest Station, Heliport 118.021 

(USGS) Ground

360 

Up 

270

360 

Up 

270

360 

Up 

270

360

090

090

090

360

090

090

360

090

360

Up 

090

360 

Up 

270

290 

Up 

020

0.16 

0.22 

0.15

0.38 

0.29 

0.33

0.16 

0.10 

0.15

0.19 

0.11 

0.15

0.27 

0.09 

0.16

0.11

0.16

0.13

0.24

0.15

0.20

0.60

0.39

0.40

0.13

0.10 

0.19

0.14 

0.10 

0.22

0.20 

0.12 

0.26
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

Garvey Reservoir 

[MWD] 

Crest

Abutment Building

Whittier Narrows Dam 

[ACOE] 

Crest

Upstream (Baseyard)

Coordinates 

(Lat. °N 

Long. °W)

34.050 

118.114

34.020 

118.053

Leona VaUey 34.620 

Fire Station 118.290 

(USGS) Ground 

Note: Four additional records^ recovered

Palos Verdes Reservoir 

[MWD] 

Abutment Bldg.

Crest

Whittier 

7215 Bright Ave. 

[USGS] 

Basement

5th Floor

10th Floor

34.774 

118.321

33.977 

118.036

Trigger S-minus Direction 

time trigger (az) 

(>)

(3) 3.2 

114

Up 

024

114 

Up 

024

(3) (2) 

028

Up 

118

360 

Up 

090

(3) 4.2 120 

Up 

030 

at Leona Valley fire station.

(3)

3.5 210 

Up 

120

6.1 210

Up 

120

(3) 6.5 

180

Up 

090

180

Up 

090

180

Up 

090

Meximum 

amplitude

fr)

0.16

0.08 

0.18

0.14 

0.07 

0.12

0.19

0.07 

0.21

0.22 

0.08 

0.15

0.05 

0.06 

0.07

0.15 

0.10 

0.12

0.12

0.07 

0.15

0.15

0.07 

0.12

0.30

0.10 

0.15

0.18

0.12 

0.24
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199^

Earthquake Station Name 

(Owner)

Morris Dam 

Left abutment 

[MWD]

Littlerock 

Post Office 

(USGS) Ground

Long Beach V A Hospital 

[VA] 

Basement

6th Floor

llth Floor

Ground Site

Valyermo Forest Station 

(USGS) Ground

Norwalk 

12400 Imperial Highway 

(USGS) 

North Ground Site

South Ground Site

Norwalk 

12440 Imperial Highway 

(USGS) 

North Ground Site

Basement

Coordinates 

(Lat. °N 

Long. °W)

34.173 

117.879

34.526 

117.995

33.778 

118.118

34.439 

117.900

33.917 

118.067

33.917 

118.065

Trigger S-minus 

time trigger

00

(3) 2.6

(3) 7.2

(3) 6.1

(3) 6.5

(3) 4.5

(3) 3.8

(3) 5.3

Direction 

(az)

246 

Up 

156

300 

Up 

210

360

Up 

270

360

Up 

270

360

Up 

270

360

Up 

270

300 

Up 

210

090

Up 

360

090 

Up 

360

090

Up 

360

090

Up 

360

Maximum 

amplitude

fe)

0.04 

0.03 

0.03

0.13 

0.08 

0.18

0.07

0.04 

0.05

0.15

0.06 

0.11

0.20

0.08 

0.21

0.07

0.03 

0.07

0.08 

0.05 

0.07

0.08

0.06 

0.08

0.06 

0.06 

0.09

0.06

0.06 

0.08

0.06

0.04 

0.06

10
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger S-minus 

(Owner) (Lat. °N time trigger 

Long. °W) (s)

12440 Imperial Highway

Structure Array 1 31:10.3 5.5

Ch. 1 - 9th Level (Roof), Center

2 - 6th Level, Center

3 - 3rd Level, Center

4 - 2nd Level, Center

5 - 1st Level (Bsmt.), East end

6 - 6th Level, West Center

7 - 1st Level (Bsmt.), Center

8 - 1st Level (Bsmt.), Center

9 - 1st Level (Bsmt.), Center

10 - Downhole (30 ft.), Center

11 - Downhole (30 ft.), Center

12 - Downhole (30 ft.), Center

Structure Array 2

Ch. 13 - 9th Level (Roof), East end

14 - 6th Level, East end

15 - 3rd Level, East end

16 - 2nd Level, East end

17 - 9th Level, (Roof) Bldg Center

18 - 6th Level, Bldg Center

19 - 3rd Level, Bldg Center

20 - 2nd Level, Bldg Center

21 - 9th Level, (Roof) West end

22 - 6th Level, West end

23 - 3rd Level, West end

24 - 2nd Level, West end

BreaDam 33.890 (3) 5.5

[ACOE] 117.925

Crest

Left Abutment

Downstream

Orange County Reservoir 33.936 (3) 6.4

[MWD] 117.884

Crest

Abutment 33.935

117.883

Direction 

(az)

090

090

090

090

180

180

Up

090

180

Up

090

180

180

180

180

180

180

180

180

180

180

180

180

180

132

Up

042

132

Up

042

132

Up

042

090

Up

360

090

Up

360

Maximum 

amplitude

(£)

0.14

0.11

0.08

0.07

0.06

0.11

0.14

0.07

0.03

0.06

0.14

0.09

0.05

0.06

0.18

0.13

0.09

0.08

0.12

0.08

0.06

0.07

0.14

0.09

0.23

0.08

0.08

0.10

0.19

0.05

0.12

0.20

0.09

0.19

0.11

0.05

0.11

11
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 195 4

Earthquake Station Name 

(Owner)

Weymouth Filter Plant

[MWD]

Ground Site

Tank Top

Carbon Canyon Dam

[ACOE]

Crest

Left Abutment

Right Abutment

Paradise Springs Camp

(USGS) Ground

Live Oak Reservoir

Abutment

[MWD]

Diemer Filter Plant

[MWD]

Admin. Bldg. Basement

Reservoir Roof

Huntington Beach

18401 Springdale

(USGS) Ground

Orange

200 S. Manchester Ave.

Coordinates Trigger S-minus 

(Lat. °N time trigger 

Long. °W) (s)

34.114 (3) 5.2

117.778

33.914 (3) 8.0

117.839

34.400 (3) 7.4

117.800

34.140 (3) (2)

117.749

33.913 (3) 4.5

117.819

33.697 31:13.4 6.1

118.023

33.789 (3) 9.1

117.894

Direction 

(az)

017

Up

287

017

Up

287

131

Up

041

131

Up

041

131

Up

041

120

Up

030

180

Up

090

281

Up

191

281

Up

191

360

Up

270

360

Up

Maximum 

amplitude

fe)

0.05

0.04

0.05

0.16

0.11

0.11

0.11

0.08

0.19

0.11

0.03

0.10

0.14

0.06

0.14

0.06

0.03

0.05

0.04

0.01

0.03

0.07

0.04

0.12

0.06

0.05

0.11

0.12

0.02

0.11

0.16

0.16

(OWNR) Roof (9) 270 0.11 

Note: Three additional records* recovered at 200 S. Manchester Ave., roof.

12
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

Orange 

333 City Blvd. West

Coordinates 

(Lat. °N 

Long. °W)

33.787 

117.894

Trigger 

time

(3)

S-minus 

trigger 

(s)

9.8

Direction 

(az)

360 

Up

Maximum 

amplitude

fr)

0.04 

0.10

(OWNR) 22nd Level 270 0.06 

Note: One additional record1 recovered at 333 City Blvd. West, 22nd level.

Orange 33.783 (3) 9.5 360 0.11

600 City Parkway West 117.896 Up 0.10

(OWNR) llth Floor 270 0.14

Note: One additional record1 recovered at 600 City Parkway West, llth floor.

Orange 33.782 (3) 9.6 360 0.11

505 City Parkway West 117.8% Up 0.11

(OWNR) llth Floor 270 0.08

Note: Two additional records1 recovered at 505 City Parkway West, llth floor.

San Antonio Dam 34.156 

Downstream 117.675 

[ACOE]

Santa Ana 33.751 

400 Civic Center Drive 117.870 

(USGS) Basement

Costa Mesa Fire Station #4 33.658 

2300 Placentia Ave. 117.931 

(USGS) Ground

Wrightwood 34.360 

Post Office 117.629 

(USGS) Ground

Costa Mesa 33.677 

John Wayne Airport 117.869 

(USGS) Ground

Irvine 33.682 

2603 Main Street 117.842 

(OWNR) 

Ground

7th Level

13th Level

(3)

(3)

(3)

5.9

5.5

7.4

31:11.8 9.3

(3)

(3)

6.2

5.7

090

Up 

360

360

Up 

270

360

Up 

270

360

Up 

270

360

Up 

270

0.05

0.03 

0.09

0.08

0.03 

0.06

0.08

0.04 

0.05

0.08

0.03 

0.07

0.09

0.03 

0.07

360 

Up 

270

360 

Up 

270

360 

Up 

270

0.06

0.03

0.11

0.11

0.07

0.11

0.10

0.08

0.09

13
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates 

(Owner) (Lat. °N 

Long. °W)

Irvine 33.656

19900 MacArthur Blvd. 117.859

(USGS) Basement

Structure Array

Ch. 1 - Roof NE corner

2- Roof SW corner

3 - 7th Floor NE

4 - 7th Floor SW

5 - 1st Floor South side

6 - Roof, SW corner

7 - 7th Floor, SW

8 - 1st Floor West side

9 - 1st Floor South side

10 - 7th Floor SW corner

11 - 1st Floor West side

12 - 1st Floor South side

Irvine 33.682

2601 Main Street 117.842

(OWNR) 13th Level

Trigger S-minus Direction 

time trigger (az)

w

(3) 6.0 060

Up

330

060

060

060

060

060

330

330

330

330

Down

Down

Down

(3) 9.2 360

Up

270

Maximum 

amplitude

fr)

0.07

0.02

0.04

0.18

0.17

0.13

0.13

0.07

0.11

0.12

0.07

0.06

0.14

0.01

0.03

0.11

0.07

0.11

Note: One additional record^ recovered at 2601 Main St., 13th level.

Newport Beach 33.600

800 Marguerite 117.866

(USGS) Ground

Newport Beach 33.618

800-840 Newport Center Dr. 117.878

(USGS) Structure Array

Ch. 1 - Tower 2 Level 1 Center

2 - Tower 2 Level 1 Center

3 - Tower 2 Level 1 Center

4 - Tower 2 Level 2 West

5 - Middle Building Level 2

6 - Middle Building Level 2

7 - Tower 2, Level 9 South

8 - Tower 2, Level 10 Center

9 - Tower 2, Level 10 Center

10 - Tower 1, Level 9 East

11 - Tower 1, Level 10 Center

12 - Tower 1, Level 10 Center

Lytle Creek 34.251

Mt. Lakes Resort 117.490

(USGS) Ground

Mills Filter Plant 33.920

[MWD] Ground 117.320

(3) 6.0 360

Up

270

(3) 8.2

020

Up

110

110

020

110

110

020

110

110

020

110

(3) 7.2 360

Up

270

(3) (2) 360

Up

270

0.03

0.02

0.05

0.06

0.02

0.04

0.09

0.11

0.10

0.07

0.05

0.07

0.06

0.06

0.04

0.08

0.03

0.07

0.02

0.02

0.02

14
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates 

(Owner) (Lat. °N 

Long. °W)

Prado Dam 33.890

[ACOE] 117.641

Crest

Downstream

Left Abutment

San Joaquin Reservoir 33.620

[MWD] 117.842

Crest

Left Abutment

Riverside 33.968

Santa Ana River Bridge 117.447

(MWD) North Abutment

Riverside 33.968

Santa Ana River Bridge 117.447

(MWD) Structure Array

Ch. 1 - North abutment

2 - North abutment

3 - North abutment

4 - Pier 7-8, mid-span

5 - Pier 7-8, mid-span

6 - Pier 7-8, mid-span

7 - Pier 8, below bearing

8 - Pier 8, below bearing

9 - Pier 8, below bearing

10 - Pier 8 above bearing

11 - Pier 8 above bearing

12 - Pier 8 above bearing

Lake Mathews Dam 33.852

Dike Toe 117.451

[MWD]

San Bernardino Array 34.235

Devore Water Department 117.407

(USGS) Ground

Trigger S-minus Direction 

time trigger (az) 

(s)

(3) 6.4

090

Up

360

090

Up

360

090

Up

360

(3) 6.5

087

Up

357

087

Up

357

(3) (2)

166

Up

076

(3) (2)

346

Down

076

346

Down

076

346

Down

076

346

Down

076

(3) 3.5 252

Up

162

(3) 6.5 360

Up

270

Maximum 

amplitude

fc)

0.09

0.07

0.10

0.20

0.06

0.18

0.06

0.04

0.14

0.04

0.02

0.04

0.12

0.07

0.14

0.05

0.03

0.04

0.04

0.02

0.03

0.16

0.12

0.11

0.09

0.02

0.03

0.11

0.02

0.17

0.03

0.03

0.05

0.05

0.02

0.07

15
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

San Bernardino Array

Rialto Fire Station

(USGS) Ground

San Bernardino Array

San Bernardino Valley Coll

(USGS) Ground

San Bernardino Array

North "F" Street

(USGS) Ground

San Bernardino

385 N. Arrowhead Ave.

(USGS) Ground Level

San Bernardino

385 N. Arrowhead Ave.

(USGS) East Ground Site

San Bernardino

385 N. Arrowhead Ave.

(USGS) Structure Array

Ch. 1 - 2nd Floor NW

2 - 2nd Floor NE

3 - 2nd Floor NE

4 - 2nd Floor SW

5 - 4th Floor SW

6 - 4th Floor NW

7 -Roof (6th) NE

8 - Roof (6th) NW

9 -Roof (6th) SW

10 -Roof (6th) NE

11 - 4th Floor NE

12 - 4th Floor NE

San Bernardino Array

Mill Creek Ranger Station

(USGS) Ground

Loma Linda University

Medical Center

(USGS) Ground

Loma Linda VA Hospital

North Ground Site

[VA]

Loma Linda VA Hospital

South Ground Site

[VA]

Coordinates 

(Lat. °N 

Long. °W)

34.134

117.368

34.086

117.309

34.183

117.295

34.106

117.287

34.106

117.287

34.106

117.287

34.080

117.114

34.050

117.263

34.051

117.248

34.049

117.250

Trigger S-minus Direction 

time trigger (az) 

(s)

(3) (2) 360

Up

270

(3) 5.4 360

Up

270

31:25.0 4.3 360

Up

270

31:33.3 (2) 090

Up

360

31:34.5 (2) 360

Up

270

31:33.3 (2)

360

090

360

090

090

360

090

360

090

360

090

360

(3) (2) 360

Up

270

(3) (2) 360

Up

270

(3) 10.8 360

Up

270

(3) 10.6 360

Up

270

Maximum 

amplitude

fe)

0.03

0.03

0.03

0.05

0.03

0.07

0.05

0.02

0.06

0.04

0.02

0.05

0.04

0.02

0.04

0.07

0.07

0.08

0.07

0.14

0.11

0.15

0.25

0.21

0.21

0.10

0.15

0.02

0.02

0.03

0.04

0.02

0.04

0.05

0.02

0.05

0.04

0.03

0.05

16
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger S-minus Direction 

(Owner) (Lat. °N time trigger (az) 

Long. °W) (s)

Loma Linda VA Hospital 34.050 (3) 10.5 

[VA] Structure Array 117.249 

Ch. 1 - Ground Floor Center

2 - Ground Floor Center

3 - Ground Floor Center

4 - 4th Floor Center

5 - Ground Floor North

6 - 4th Floor Center

7 - 4th Floor North

8 - Ground Floor South

9 - 4th Floor South

Reche Canyon 34.004 (3) (2) 

Olive Dell Ranch 117.223 

(USGS) Ground

Skinner Dam 33.575 (3) (2) 

[MWD] 117.081 

Finished Water Reservoir

Crest

Left Abutment

Structure Array 

Ch. 1 - Center crest

2 - Center crest 

3 - Center crest

4 - Left crest

5 - Left crest

6 - Left slope 

7 - Center slope 

8 - Center slope 

9 - Center slope 

10 - Center toe

11 - Center toe 

12 - Center toe

Maricopa Array #2 35.040 (3) (2) 

[CDWR] Ground 119.429

Note: One additional record^ recovered at Maricopa Array #2.

Maricopa Array #3 35.078 (3) 12.1 

[CDWR] Ground 119.401

Down

180

270

270

270

180

270

180

270

330 

Up 

240

354

Up 

084

178

Up 

088

180

Up 

270

180

270

270 

180 

Up 

270 

180

Up 

270

040 

Up 

310

040 

Up 

310

Maximum 

arrplitude

0?)

0.02

0.05

0.04

0.16

0.05

0.10

0.16

0.03

0.13

0.02 

0.01 

0.02

0.03

0.03 

0.03

0.01

0.01 

0.02

0.05

0.02 

0.08

0.05

0.05

0.04 

0.03 

0.02 

0.04 

0.02

0.02 

0.03

0.03 

0.01 

0.02

0.03 

0.02 

0.04

Note: One additional record^ recovered at Maricopa Array

17
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199^

Earthquake Station Name 

(Owner)

Maricopa Array #4

[CDWR] Ground

Coordinates 

(Lat. °N 

Long. °W)

35.131

119.368

Trigger 

time

(3)

S-minus 

trigger 

(s)

12.0

Direction 

(az)

040

Up

310

Maximum 

amplitude

Of)

0.03

0.01

0.03

Note: One additional record^ recovered at Maricopa Array #4.

17 January 1994-

18 January 1994

Southern Calif.

Epicenters and

Magnitudes unknown

Buena Vista Pumping Plant

Basement level (1)

[CDWR]

Buena Vista Pumping Plant

Ground level (4)

[CDWR]

Buena Vista Pumping Plant

Freefield

[CDWR]

Jensen Filter Plant

(MWD)

Admin. Bldg. Basement

35.160

119.344

35.160

119.344

35.158

119.351

34.312

118.4%

31:36.4

31:36.4

(3)

(3)

(3)

(3)

(3)

(2)

(2)

10.8

(2)

2.3

1.6

1.6

Note: Thirty-two additional records^ recovered at JFP admin.

Generator Bldg. (3)

(3)

(3)

(3)

(2)

(2)

(2)

1.2

105

Up

015

105

Up

015

105

Up

015

022

Up

292

022

Up

292

022

Up

292

022

Up

292

0.02

0.01

0.02

0.02

0.01

0.02

0.03

0.01

0.04

0.07

0.03

0.06

0.06

0.05

0.05

0.04

0.03

0.07

0.07

0.09

0.09

building, basement.

022

Up

292

022

Up

292

022

Up

292

022

Up

292

0.12

0.04

0.16

0.06

0.03

0.04

0.07

0.03

0.06

0.05

0.05

0.09

18
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger 

(Owner) (Lat. °N time 

Long. °W)

(3)

(3)

(3)

(3)

(3)

S-minus 

trigger 

( )

1.3

1.8

1.5

1.3

1.8

Direction Maximum 

(az) amplitude

fc)

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

0.07 

0.02 

0.04

0.06 

0.02 

0.07

0.09 

0.08 

0.06

0.11 

0.08 

0.19

0.06 

0.05 

0.06

Note: Twenty-three additional records^ recovered at JFP generator building.

Reservoir Roof (3)

(3)

(3)

(3)

(3)

(3)

(3)

(3)

(2)

1.7

(2)

1.9

3.2

1.7

1.2

1.9

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

022 

Up 

292

0.07 

0.04 

0.08

0.07 

0.06 

0.08

0.08 

0.08 

0.09

0.12 

0.07 

0.09

0.12 

0.04 

0.13

0.06 

0.05 

0.07

0.08 

0.04 

0.07

0.09 

0.03 

0.04

19
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199^

Earthquake Station Name Coordinates Trigger 

(Owner) (Lat. °N time 

Long. °W)

(3)

(3)

(3)

(3)

(3)

(3)

(3)

(3)

S-minus 

trigger 

(s)

2.2

1.6

2.0

1.8

1.5

1.7

1.6

2.1

Direction 

(az)

022

Up

292

022

Up

292

022

Up

292

022

Up

292

022

Up

292

022

Up

292

022

Up

292

022

Up

292

Maximum 

amplitude

(?)

0.28

0.16

0.15

0.14

0.14

0.08

0.12

0.06

0.20

0.09

0.11

0.12

0.08

0.04

0.05

0.12

0.06

0.23

0.10

0.35

0.28

0.06

0.09

0.17

Note: Twenty-eight additional records^ recovered at JFP reservoir roof.

17 January 1994-

20 January 1994

Southern Calif.

Epicenters and

magnitudes unknown

Los Angeles 34.185 (3)

6301 Owensmouth Ave. 118.584

(OWNR) Roof (12)

(3)

(3)

(3)

2.8

2.8

3.0

3.0

360

Up

270

360

Up

270

360

Up

270

360

Up

270

0.08

0.13

0.03

0.06

0.09

0.04

0.08

0.09

0.02

0.08

0.08

0.07

Note: 32 additional records^ recovered at 3601 Owensmouth Ave., roof.

20
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

Sepulveda 

VA Hospital, Bldg. #40 

(VA)

Coordinates Trigger 

(Lat. °N time 

Long. °W)

34.249 (3) 

118.475

(3)

(3)

(3)

(3)

(3)

(3)

(3)

(3)

S-minus 

trigger

W

1.4

1.8

2.0

2.2

2.1

2.3

1.8

0.8

2.5

Direction 

(az)

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

Note: 25 additional records^ recovered at Sepulveda VA hospital, Bldg.

Los Angeles 

5805 Sepulveda Blvd. 

(OWNR)Roof(9)

34.175 (3) 

118.465

(3)

(3)

(3)

2.3

2.2

2.6

2.9

360 

Up 

270

360 

Up 

270

360 

Up 

270

360 

Up 

270

Maximum 

amplitude

fc)

0.15 

0.13 

0.09

0.10 

0.04 

0.11

0.08 

0.02 

0.11

0.09 

0.02 

0.06

0.07 

0.03 

0.06

0.11 

0.02 

0.10

0.07 

0.05 

0.07

0.12 

0.02 

.07

0.09 

0.03 

0.06

#40.

0.23 

0.11 

0.14

0.06 

0.03 

0.03

0.07 

0.12 

0.05

0.07 

0.05 

0.04

21
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 199 *

Earthquake Station Name 

(Owner)

Coordinates Trigger 

(Lat. °N time 

Long. °W)

(3)

S-minus Direction Maximum 

trigger (az) amplitude 

(s) fr)

1.1 360

Up

270

0.06

0.05

0.09

Note: 25 additional records^ recovered at 5805 Sepulveda Blvd., roof.

Los Angeles

16000 Ventura Blvd.

(OWNR)Roof(13)

34.156 (3)

118.480

(3)

(3)

(2) 120

Up

030

2.1 120

Up

030

0.5 120

Up

030

0.08

0.08

0.09

0.04

0.06

0.02

0.03

0.07

0.03

Note: 27 additional records^ recovered at 16000 Ventura Blvd., roof.

Los Angeles

10920 Wilshire Blvd.

(OWNR) 19th level

34.058 (3)

118.443

3.7 070

Up

340

0.05

0.08

0.04

Note: Ten additional records^ recovered at 10920 Wilshire Blvd., 19th level.

Los Angeles

15250 Ventura Blvd.

(OWNR) Roof (13)

34.157 (3)

117.476

(3)

2.5 360

Up

270

3.0 360

Up

270

0.15

0.09

0.04

0.06

0.05

0.03

Note: Eleven additional records^ recovered at 15250 Ventura Blvd., roof.

17 January 1994

1239:39.8 G.m.t.

Southern Calif.

34.261N, 116.534W

Magnitude 4.5 ML

Los Angeles

Wadsworth VA Hospital

(VA)

North Ground Site

34.054

118.453

39:44.6 3.9 (1)

Note: Five additional records^ recovered at Wadsworth VA north ground site.

17 January 1994

1756:08.2 G.m.t.

Southern Calif.

34.228N, 118.573W

Magnitude 4.6 ML

17 January 1994

2333:30.6 G.m.t.

Malibu Canyon

Monte Nido Fire Station

(USGS)

Malibu Canyon

Monte Nido Fire Station

34.078 56:15.7

118.693

34.078 33.40.3

118.693

(2)

(2)

(1)

(1)

Southern Calif. 

34.326N, 118.698W 

Magnitude 5.6 ML

(USGS)

22
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

17 January 1994- 

18 January 1994 

Southern Calif. 

Epicenters and 

magnitudes unknown

Station Name Coordinates 

(Owner) (Lat. °N 

Long. °W)

Sepulveda Canyon 34.097 

Spillway Roof 118.475 

(MWD)

Trigger 

time

(3) 

(3)

(3)

S-minus 

trigger 

(s)

2.5 

(2)

(2)

Direction Marimum 

(az) amplitude

fc)

166 

Up 

076

166 

Up 

076

166 

Up 

076

0.07 

0.04 

0.20

0.08 

0.03 

0.09

0.03 

0.02 

0.06

Note: Seven additional records^ recovered at Sepulveda Canyon spillway roof.

17 January 1994- 

18 January 1994 

Southern Calif. 

Epicenters and 

magnitudes unknown

Santa Susana 34.230 

ETEC 118.712 

(DOE)

Building 463, Roof

Note: Four additional records^ recovered

Freefield

(3)

(3)

(3)

(3)

(3)

2.2

(2)

2.5

2.1

(2)

090 

Up 

360

090 

Up 

360

090 

Up 

360

090 

Up 

360

090 

Up 

360

0.04 

0.10 

0.05

0.03 

0.07 

0.05

0.06 

0.07 

0.04

0.27 

0.25 

0.20

0.08 

0.21 

0.11

at Santa Susana Building 463 roof.

(3) 2.0 090 

Up 

360

0.18 

0.03 

0.13

Note: Eight additional records^ recovered at Santa Susana freefield.

Building 462, 1st Floor (3)

(3)

2.0

(2)

090 

Up 

360

090 

Up 

360

0.16 

0.05 

0.19

0.05 

0.05 

0.07

Note: Five additional records^ recovered at Santa Susana building 462, first floor.

23
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name 

(Owner)

Building 462, 6th Floor

Coordinates 

(Lat. °N 

Long. °W)

Trigger 

time

(3)

S-minus 

trigger 

(s)

2.1

Direction 

(az)

090 

Up 

360

Maximum 

amplitude

fe)

0.16 

0.12 

0.14

(3) (2) 090 0.14 

Up 0.08 

360 0.08 

Note: Seven additional records^ recovered at Santa Susana building 462, sixth floor.

Building 026, Ground Level (3)

(3)

(3)

2.0

1.9

0.6

325 

Up 

235

325 

Up 

235

325 

Up 

235

0.05

0.03

0.18

0.06

0.08

0.06

17 January 1994- 

4 March 1994 

Southern Calif. 

Epicenters and 

magnitudes unknown

Note: Nine additional records^ recovered at Santa Susana building 026, ground level.

Los Angeles (3) 1.6

8436 West 3rd Street

(OWNR) Roof (10th level)

34.072

118.375

360 

Up 

270

0.12

0.10

0.26

(3) 3.0 360 0.05 

Up 0.03 

270 0.05 

Note: Seventeen additional records1 recovered at 8436 West 3rd Street, l(Mi level.

20 January 1994 

1541:33.2 G.m.t. 

Northern Calif. 

40.496N, 124.828W 

Magnitude 4.2ML

1 February 1994 

1001:54.5 GMT 

Hawaii

19.244N, 155.288W 

Magnitude 5.3MB

Eel River Valley Array 

Centerville Beach

40.563

124.348

42:41.4 6.1 (2)

Hilo, Hawaii 

Hilo Hospital 

(USGS) Ground

Hilo, Hawaii 

USDA Laboratory 

(USGS) Ground

Honokaa, Hawaii 

Honokaa Police Dept. 

(USGS) Ground

19.720

155.120

19.731

155.100

20.080

155.465

00 (2)

GO (2)

00 (2)

352

Up 

262

090

Up 

360

110

Up 

020

0.05

0.01 

0.08

0.03

0.03 

0.05

0.04

0.05 

0.05

24
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

21 August 1993-

2 March 1994

Southern Calif.

Epicenter and

magnitude unknown

Station Name 

(Owner)

Honomolino, Hawaii

MacFarms

(USGS) Ground

Kohala, Hawaii

Kohala-Kapaau Police Sta.

(USGS) Ground

Kealakekua, Hawaii

Kona Hospital

(USGS) Ground

Laupahoehoe, Hawaii

Laupahoehoe Post Office

(USGS) Ground

Mauna Kea Summit

UKIRT Observatory

(USGS) Ground

Mauna Kea State Park

Visitors Center

(USGS) Ground

Mauna Loa Weather Sta.

NOAA Observatory

(USGS) Ground

Waimea, Hawaii

Waimea Fire Station

(USGS) Ground

Waiohina, Hawaii

K'au Baseyard

(USGS) Ground

San Bernardino Array

Fire Station No. 1

(USGS) Ground

Coordinates 

(Lat. °N 

Long. °W)

19.169

155.169

20.230

155.801

19.523

155.879

19.987

155.236

19.826

155.473

19.752

155.530

19.539

155.580

20.026

155.664

19.070

155.615

34.105

117.281

Trigger 

time

(4)

(4)

(4)

(4)

(4)

(4)

(4)

(4)

(4)

(3)

S-minus 

trigger 

00

0.9

(2)

(2)

(2)

(2)

6.5

6.1

(2)

1.5

(2)

Direction 

(az)

360

Up

270

280

Up

190

360

Up

270

360

Up

270

270

Up

180

360

Up

270

360

Up

270

360

Up

270

360

Up

270

360

Up

270

Maximum 

amplitude

fr)

0.06

0.02

0.06

0.03

0.02

0.02

0.03

0.02

0.02

0.05

0.03

0.07

0.05

0.03

0.03

0.09

0.04

0.04

0.04

0.05

0.04

0.04

0.08

0.07

0.07

0.05

0.11

0.05

0.02

0.04

28 April 1993- 

2 March 1994 

Southern Calif. 

Epicenter and 

magnitude unknown

San Jacinto 

San Jacinto Tunnel, 

West Portal 

(USGS) Ground

33.821

116.967

(3) (2) 360 

Up 

270

0.03

0.03

0.02

25
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

10 June 1993- 

8 March 1994 

Southern Calif. 

Epicenter and 

magnitude unknown

20 March 1994 

2120:12.2 GMT

Station Name 

(Owner)

San Bernardino Array 

Sycamore Forest Station 

(USGS) Ground

Alhambra 

900 S. Fremont

Coordinates 

(Lat. °N 

Long. °W)

34.192 

117.427

34.085 

118.149

Trigger 

time

(3)

(3)

S-minus 

trigger 

(s)

(2)

(2)

Direction 

(az)

360 

Up 

270

Maximum 

amplitude

fr)

0.03 

0.01 

0.03

Southern Calif. 

34.231N,118.475W 

Magnitude 5.3 ML 

Northridge 

Aftershock

(USGS) Structure Array

Ch. 1 - 12th Floor, Center 

Ch. 2 - 12th Floor, Center 

Ch. 3 - 12th Floor, North end 

Ch. 4 - 6th Floor, Center 

Ch. 5 - 6th Floor, Center 

Ch. 6 - 6th Floor, North end 

Ch. 7 - 2nd Floor, Center 

Ch. 8 - 2nd Floor, Center 

Ch. 9 - 2nd Floor, North end 

Ch. 10 - Basement, Center 

Ch. 11 - Basement, Center 

Ch. 12 - Basement, Center

Jensen Filter Plant 34.312 

(MWD) 118.496

Admin. Bldg.

Basement

Generator Bldg. 

Ground level

Reservoir roof

Los Angeles 34.063 

Brentwood VA Hospital 118.463 

(VA) Ground

Los Angeles 34.118 

Griffith Observatory 118.299 

(USGS) Ground

Los Angeles 34.249 

Sepulveda VA Hospital 118.453 

(VA) Ground

(3)

(3)

(3)

1.7

1.1

1.5

(3) 3.5

(3) 1-1

(3) 3.2

360 

090 

090 

090 

360 

090 

090 

360 

090 

360 

Up 

090

022 

Up 

292

022 

Up 

292

022 

Up 

292

285 

Up 

195

360 

Up 

270

360 

Up 

270

0.03

0.01

0.01

0.02

0.03

0.04

0.03

0.01

0.03

0.04

0.02

0.03

0.22

0.08

0.28

0.17

0.11

0.32

0.28

0.14

0.48

0.07

0.04

0.05

0.03

0.04

0.07

0.35

0.22

0.11

26
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates 

(Owner) (Lat. °N 

Long. °W)

Los Angeles 34.040

1955 1/2 Perdue Ave. 118.445

(USGS)

Basement

First Floor

Third Floor

Los Angeles 34.067

1111 Sunset Blvd. 118.248

(MWD)

Basement

Fourth Floor

Roof (8th)

Los Angeles 34.053

WadsworthV A Hospital 118.452

(VA) Structure Array

Ch. 1 - 6th Floor, North

Ch. 2 - 6th Floor, North-center

Ch. 3 - 6th Floor, Center

Ch. 4 - 6th Floor, Center

Ch. 5 - 6th Floor, South

Ch. 6 - 6th Floor, South

Ch. 7 - Basement, North-center

Ch. 8 - Basement, North-center

Ch. 9 - Basement, North-center

Los Angeles 34.054

WadsworthV A Hospital 118.453

(VA) North Ground Site

Los Angeles 34.050

WadsworthVA Hospital 118.448

(VA) South Ground Site

Trigger S-minus Direction 

time trigger (az) 

(s)

(3)

3.2 235

Up

145

3.5 235

Up

145

3.5 235

Up

145

(3)

(2) 348

Up

258

(2) 348

Up

258

(2) 348

Up

258

(3) 3.7

235

235

235

055

055

335

325

235

Down

(3) 3.2 325

Up

235

(3) (2) 325

Up

235

Maximum 

amplitude

Or)

0.13

0.05

0.15

0.10

0.11

0.10

0.08

0.14

0.11

0.02

0.02

0.02

0.02

0.02

0.02

0.04

0.05

0.03

0.11

0.09

0.09

0.11

0.12

0.07

0.06

0.05

0.02

0.07

0.04

0.11

0.07

0.03

0.07

27
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1954

Earthquake Station Name 

(Owner)

Los Angeles

1100 Wilshire Blvd.

(USGS) Structure Array

Ch. 1 - 12th Floor North

Ch. 2 - 12th Floor North

Ch. 3 - 12th Floor South

Ch. 4 - 13th Floor North

Ch. 5 - 13th Floor North

Ch. 6 - 13th Floor South

Ch. 7 - 32nd Floor North

Ch. 8 - 32nd Floor North

Ch. 9 - 32nd Floor South

Coordinates Egri er 

(Lat. °N time 

Lon. °W)

34.052 (3)

118.263

Ch. 10 - Ground Floor North

Ch. 11 - Ground Floor North

Ch. 12 - Ground Floor South

18 January 1994-

24 March 1994

Southern Calif .

Epicenters and

magnitudes unknown

Los Angeles

1100 Wilshire Blvd.

(USGS) Basement 3 NE

Los Angeles

1100 Wilshire Blvd.

(USGS) Basement 3 SE

Los Angeles

1100 Wilshire Blvd.

(USGS) Basement 4 NW

Pasadena (Analog)

535 S. Wilson Ave.

(USGS) Ground

Sepulveda Canyon

Spillway Building

(MWD) Ground

Santa Susana

Energy Tech. Eng. Ctr.

(DOE)

Bldg. 026, Ground

34.052 (3)

118.263

34.052 (3)

118.263

34.052 (3)

118.263

34.136 (3)

118.127

34.097 (3)

118.475

34.232 (3)

118.710

S-minus Direction 

tri er (az) 

(s)

(2)

298

208

208

298

208

208

298

208

208

298

208

208

(2) 298

Up

208

(2) 298

Up

208

(2) 298

Up

208

1.9 360

Up

270

2.4 166

Up

076

(2) 325

Up

235

(2) 325

Up

235

2.7 325

Up

235

Maximum 

amplitude

(Z)

0.02

0.03

0.02

0.02

0.04

0.02

0.01

0.04

0.02

0.04

0.03

0.03

0.02

0.02

0.04

0.03

0.03

0.02

0.02

0.01

0.02

0.03

0.03

0.04

0.11

0.09

0.19

0.01

0.01

0.02

0.03

~

0.02

0.01

28
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger S-minus 

(Owner) (Lat. °N time trigger 

Long. °W) (s)

(2)

(2)

(2)

1.7

(2)

Bldg. 462, 1st Floor 34.230 (3) (2) 

118.712

2.5

1.4

(2)

Bldg. 462, 6th Floor 34.230 (3) (2) 

188.712

2.5

1.6

(2)

Direction 

(az)

325 

Up 

235

325 

Up 

235

325 

Up 

235

325

Up 

235

325 

Up 

235

090 

Up 

360

090

Up 

360

090

Up 

360

090 

Up 

360

090 

Up 

360

090

Up 

360

090

Up 

360

090 

Up 

360

Maximum 

amplitude

(?)

0.02 

0.01

0.09 

0.05

0.02 

0.01

0.05

0.04

0.04 

0.04

0.03 

0.03 

0.04

0.02

0.02 

0.03

0.11

0.04 

0.10

0.05 

0.02 

0.05

0.10 

0.06 

0.05

0.03

0.03 

0.02

0.10

0.06 

0.07

0.05 

0.04 

0.04

29
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

6 April 1994

1901:04.0 GMT

Southern Calif.

34.192N, 117.095W

Magnitude 4.8 ML

Station Name 

(Owner)

Bldg. 463, Roof

Freefield

Loma Linda VA Hospital

Structure Array

(VA)

Coordinates Trigger S-minus 

(Lat. °N time trigger 

Long. °W) (s)

34.230 (3) (2)

118.713

34.231 (3) (2)

118.713

2.5

1.4

(2)

34.050 (3) 3.3

117.249

Ch. 1 - Ground Floor, Center

Ch. 2 - Ground Floor, Center

Ch. 3 - Ground Floor, Center

Ch. 4 - 4th Floor, Center

Ch. 5 - Ground Floor, North

Ch. 6 - 4th Floor, Center

Ch. 7 - 4th Floor, North

Ch. 8 - Ground Floor, South

Ch. 9 - 4th Floor, South

San Bernardino

385 N. Arrowhead Ave.

(USGS) Structure Array

Ch. 1 - 2nd Floor, NW

Ch.2-2ndFloor,NE

Ch. 3 - 2nd Floor, NE

Ch. 4 - 2nd Floor, SW

Ch. 5 - 4th Floor, SW

Ch. 6 - 4th Floor, NW

Ch. 7 -Roof (6th), NE

Ch. 8 - Roof (6th), NW

Ch.9-Roof(6th),SW

Ch.lO-Roof(6th),NE

Ch. 11 -4th Floor, NE

Ch. 12 -4th Floor, NE

34.106

117.287

1901:08.2 3.4

Direction 

(az)

090

Up

360

090

Up

360

090

Up

360

090

Up

360

090

Up

360

Down

180

270

270

270

180

270

180

270

360

090

360

090

090

360

090

360

090

360

090

360

Maximum 

amplitude

(*)

0.09

0.11

0.06

0.03

0.02

0.03

0.03

0.02

0.02

0.10

0.04

0.07

0.02

0.02

0.04

0.02

0.03

0.02

0.07

0.04

0.05

0.09

0.03

0.06

0.02

0.03

0.03

0.02

0.03

0.02

0.04

0.05

0.04

0.04

0.02

0.03

30
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

22 May 1992-

7 April 1994

Central Calif.

Epicenters and

magnitudes unknown

7 April 1994-

27 May 1994

Central Calif.

Epicenter and

magnitude unknown

8 July 1993-

3 June 1994

Southern Calif.

Epicenter and

magnitude unknown

24 February 1993

15 July 1994

Eastern Calif .

Epicenter and

magnitude unknown

26 June 1994

0842: 50.2 GMT

Station Name 

(Owner)

Coalinga

Burnett Construction

(USGS) Ground

Coalinga

Burnett Construction

(USGS) Ground

San Antonio Dam

Crest

(ACOE)

Carson City

W. Nevada Comm. College

(USGS) Ground

Great Western Savings

2168 Shattuck Ave.

Coordinates Trigger S-minus 

(Lat. °N time trigger 

Long. °W) (s)

36.168 (3) 2.6

120.357

2.4

36.168 (3) 3.5

120.357

34.157 (3) 7.3

117.676

39.185 (4) (2)

119.790

37.870

122.270

Direction 

(az)

360

Up

270

360

Up

270

360

Up

270

090

Up

360

180

Up

090

Maximum 

ampUtude

(T)

0-04

005

005

0-04

0-03

0-04

0,02

0.02

0,04

0,09

Oil

036

003

0,02

002

Central Calif. 

37.917N, 122.289W 

Magnitude 4.2 ML

(USGS) 

Basement, East

Basement, West

Structure Array 

Ch. 1 - 13th Floor, East Core 

Ch. 2 - 13th Floor, East Core 

Ch. 3 - 13th Floor, Center 

Ch. 4 - 13th Floor, Roof West Core 

Ch. 5 - 13th Floor, Roof West Core 

Ch. 6 - 13th Floor, Southwest 

Ch. 7 - 13th Floor, Southwest 

Ch. 8 - 4th Floor, Southwest 

Ch. 9 - 4th Floor, Southwest 

Ch. 10 - 4th Floor, West Core 

Ch. 11 - 4th Floor, West Core 

Ch. 12 - 4th Floor, East Core

(4) 0.9

(4)

(4)

0.9

1.0

261 

Up 

171

261 

Up 

171

171

261

171

171

081

081

171

171

081

081

171

171

0.12

0,04

0,09

009

0,05

008

013 

0,09 

013 

012 

0,10 

008 

Oil 

0,15 

016 

013 

008 

0-10

31
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 19?4

Earthquake Station Name 

(Owner)

Berkeley 

Univ. of California 

Haviland Hall

(USGS)

Berkeley 

Univ. of California 

Strawberry Canyon 

(USGS)

Emery ville 

6363 Christie Ave.

Coordinates 

(Lat. °N 

Long. °W)

37.870 

122.260

37.870 

122.240

37.844 

122.295

Trigger S-minus 

time trigger 

(s)

(3) 1.1

(3) 1.3

Direction 

(az)

135 

Up 

045

135 

Up 

045

Maximum 

amplitude

fr>

0.07 

0.02 

0.06

0.04 

0.03 

0.06

(USGS)

Ground Site, South (4) (2) 135 0.02

	Up 0.08 

	045 0.03

Structure Array 1: (3) (2)

Ch. 1 - Roof (31st), West Wing 350 0.02

Ch. 2 - Roof (31st), South Wing 050 0.02

Ch. 3 - Roof (31st), North Wing 290 0.02

Ch. 4 - Roof (31st), Central Core 350 0.02

Ch. 5 - Roof (31st), Central Core 260 0.02

Ch. 6 - 21st Floor, Central Core 350 0.02

Ch. 7 - 21st Floor, West Wing 350 0.02

Ch. 8 - 21st Floor, South Wing 050 0.02

Ch. 9 - 21st Floor, North Wing 290 0.01

Ch. 10 - 13th Floor, Central Core 350 0.02

Ch. 11 - 13th Floor, Central Core 260 0.02

Ch. 12 - 21st Floor, Central Core 260 0.02

Structure Array 2: (3) (2)

Ch. 1 - 13th Floor, West Wing 350 0.03

Ch. 2 - 13th Floor, South Wing 050 0.02

Ch. 3 - 13th Floor, North Wing 290 0.01

Ch. 4 - Ground Floor, West Wing Up 0.06

Ch. 5 - Ground Floor, South Wing Up 0.05

Ch. 6 - Ground Floor, Central Core Up 0.04

Ch. 7 - Ground Floor, North Wing 260 0.02

Ch. 8 - Ground Floor, North Wing Up 0.04

Ch. 9 - Ground Floor, North Wing 350 0.02

Ch. 10 - Ground Site, North 350 0.03

Ch. 11 - Ground Site, North Up 0.08

Ch. 12 - Ground Site, North 260 0.03

Richmond Bulk Mail 37.884 (3) (2) 057 0.02

2501RydinRd. 122.302 Up 0.02

(USGS) 327 0.02

32
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake

10 September 1994

0743:11.3 GMT

Washington

47.186N, 121.959W

Magnitude 4.1 ML

12 September 1994

1223:43.2 GMT

Calif. - Nev. Border

38.819N, 119.652W

Magnitude 6.0 ML

20 December 1994

1027:47.1

Central Calif.

35.917N, 120.465W

Magnitude 5.0 ML

Station Name Coordinates Trigger S-minus 

(Owner) (Lat. °N time trigger 

Long. °W) (s)

Hanson Dam 47.282

(ACOE) 121.791

Crest (3) 1.2

Left Abutment (3) (2)

Toe (3) 2.7

Mud Mountain Dam 47.140 (3) (2)

(ACOE) 121.930

Buchannan Dam 37.217

(ACOE) 119.983

Center Crest (3) (2)

Left Crest (3) (2)

Hidden Dam 37.112

(ACOE) 119.883

Center Crest (3) (2)

Parkfield Liquefaction Array 35.797

(USGS) 120.337

Ground Site (3) 1.2

Accelerometer/ Piezometer Array 1: (3) 3.3

Ch. 1 - Downhole, 38.5 ft.

Ch. 2 - Downhole, 38.5 ft.

Ch. 3 - Downhole, 38.5 ft.

Ch. 4 - Downhole, 9 ft.

Ch. 5 - Downhole, 9 ft.

Ch. 6 - Downhole, 9 ft.

Note: Channels 7-12 are downhole piezometers.

Direction 

(az)

050

Up

320

050

Up

320

050

Up

320

314

Up

224

340

Up

250

360

Up

270

100

Up

010

315

Up

225

315

Up

225

315

Up

225

Maximum 

amplitude

(£)

0.05

0.05

0.07

0.02

0.04

0.04

0.02

C.02

0.03

C.04

C.02

C04

C.02

C.01

C.02

C.02

C.01

C.02

0,02

0,01

0,01

0.05

0.04

0.09

005

0.02

0,03

0.07

0.03

0.06

33
Table 1. National Strong-Motion Program Accelerograph Records Recovered During 1994

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum

(Owner) (Lat. °N time trigger (az) amplitude

Long. °W) (s) (g)

Accelerometer/Piezometer Array 2: (3) 3.3

Ch. 1 - Downhole, 98.5 ft. 315 0.05

Ch. 2 - Downhole, 98.5 ft. Up 0.02

Ch. 3 - Downhole, 98.5 ft. 225 0.05

Ch. 4-Downhole, 14.0ft. 315 0.06

Ch. 5 - Downhole, 14.0 ft. Up 0.02

Ch. 6 - Downhole, 14.0 ft. 225 0.06

Ch. 7-Surface 315 0.10

Ch. 8 - Surface Up 0.06

Ch. 9 - Surface 225 0.10 

Note: Channels 10 -12 are downhole piezometers.

Coalinga 36.168 (3) (2) 360 0.02

Burnett Construction 120.357 Up 0.01

(USGS) Ground 270 0.01

1 Less than 0.05 g at ground level or less than 0.10 g at non-ground-level stations.

2 Questionable or indeterminable.

3 WWVB time code illegible, or instrument not equipped with a radio reciever; correlation of accelerogram 

with event may be questionable or identity of event unknown.

4 Contains internal clock for event correlation only (accuracy is widely variable).

34

U.S. GOVERNMENT PRINTING OFFICE: 1997 - 673-048 / 20086 REGION NO. 8
SELECTED SERIES OF U.S. GEOLOGICAL SURVEY PUBLICATIONS

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