U.S. GEOLOGICAL SURVEY CIRCULAR 1084 

Catalogue of U.S. Geological Survey 

Strong-Motion Records, 1 989 
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Catalogue of U.S. Geological Survey 

Strong-Motion Records, 1 989 

Compiled by JOSEPHINE C. SWITZER and 

RONALD L. PORCELLA 

U.S. GEOLOGICAL SURVEY CIRCULAR 1084 
U.S. DEPARTMENT OF THE INTERIOR 

MANUEL LUJAN, JR., Secretary 

U.S. GEOLOGICAL SURVEY 

Dallas L. Peck, 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 

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1992 

Free on application to 

Book and Open-File Report Sales 

U.S. Geological Survey 

Box 25425 

Denver, CO 80225 

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 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 National Earthquake Hazards Reduction Program. The current Federal seismic engineering program operates the 

National Cooperative Strong-Motion Network (NCSMN) with more than 1,000 stations in 

40 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 Veterans Administration, 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 NCS MN stations that had been published in that format since 

1974. This report includes all accelerograms recovered during 1989. Unless otherwise noted, event data are from the "Preliminary Determination of Epicenters," published monthly 

by the U.S. Geological Survey. 

Ill 

CONTENTS 

Preface Ill 

Introduction 1 

References 2 

TABLE 

1. National Cooperative Strong-Motion Network accelerograph records recovered during 

1989 3 

v 

Catalogue of U.S. Geological Survey 

Strong-Motion Records, 1 989 

Compiled by Josephine C. Switzer and Ronald L. Porcella 

INTRODUCTION 

Nearly 400 accelerograph records were recovered from the National Cooperative 

Strong-Motion Network (NCSMN) during 1989. Stations in California, Hawaii, and Washington recorded eight earthquakes of M=5.0 or greater including the ML =7.0 Lorna Prieta 

earthquake in northern California on October 17. 

An ML =5.0 earthquake in the Malibu area of southern California triggered 14 accelerographs at 10 stations on January 19. A peak acceleration of 0.15 g was recorded at the 

sixth level of the Wadsworth VA hospital in west Los Angeles (Johnson and Acosta, 1989). 

On April 3 an ML =4.7 earthquake triggered five strong-motion stations along the 

Calaveras Fault zone in northern California. The peak horizontal acceleration recorded was 

0.16 gat Cherry Flat Reservoir (Salsman and Switzer, 1990). 

Two earthquakes on June 12 in southern California, ML = 4.4 and 4.1, produced 

records at 13 and 8 NCSMN stations, respectively. Maximum ground accelerations of 0.15 

g were recorded in East Los Angeles and at the abutment of Garvey Reservoir in Monterey 

Park during the 4.4 event; during the 4.1 event, maximum ground motions at these two 

stations were 0.08 g and 0.05 g, respectively. 

An ML =4.8 earthquake near Eureka in northern California on September 21 produced significant ground motions at two of five stations triggered by this event; peak motions and their locations were 0.16 g at Centerville Beach Navy Facility and 0.12 g at 

Ferndale Fire Station. 

Accelerographs at 41 NCSMN stations in the San Francisco Bay area were triggered 

by the October 17 Lorna Prieta main shock and produced 59 records; these data include 

recordings from extensively instrumented structures such as high-rise buildings in San 

Francisco, Berkeley, Hayward, and Emeryville, and a dam east of Morgan Hill. The closest 

USGS accelerograph station was Anderson Dam, located at an epicentral distance of 27 

km, which produced peak accelerations of 0.08, 0.23, and 0.26 g, at the abutment, toe, and 

downstream stations, respectively (Maley and others, 1989). 

A companion project at the USGS has published a report containing the computer 

processed results of 17 film records and a digital record recovered from this event (Brady and 

Mork, 1990). A companion tape containing all processed results is available, together with 

tapes for the remainder of this event's processed records, from the National Geophysical Data 

Center, 325 Broadway (Mail E/GC1), Boulder, Colorado 80303; phone (303) 497-6084. 

An ML =4.2 earthquake on December 2 triggered seven stations of the Anza strongmotion array in southern California; a peak horizontal ground acceleration of 0.18 g was 

recorded on granitic rock at the Keenwild Forest Station site. 

Manuscript approved for publication, March 27, 1992 
Additionally, six magnitude 5 or greater earthquakes were recorded at NCS:MN stations in 1989. The date, location, magnitude, number of records recovered, and maximum 

recorded ground motion are as follows: June 26, Hawaii, 6.2, 14 records, 0.19 g; Aug. 8, 

central California. 5.4, eight records, 0.08 g; Oct. 18, central California, 5.1, three records, 

less than 0.05 g; Oct. 25, central California, 5.0, two records, less than 0.05 g; Dec. 24, 

Washington state, 5.1, one record, 0.08 g (on crest of dam); and Dec. 28, Hawaii, 5.0, two 

records, less than 0.05 g. 

REFERENCES 

Brady, A.G., and Mork, P.N., 1990, Lorna Prieta, California, earthquake October 18 (GMT), 1989, 

processed strong-motion records, Volume 1: U.S. Geological Survey Open-File Report 90-247, 

274p. 

Johnson, D.A., and Acosta, A.V., 1989, Strong-motion data from the Malibu, California, earthquake 

of January 19, 1989: U.S. Geological Survey Open-File Report 89-186, 21 p. 

Maley, R.P., Acosta, A.V., Ellis, F., Etheredge, E.C., Foote, L., Johnson, D.A., Porcella, R.L., 

Salsman, M., and Switzer, J.C., 1989, U.S. Geological Survey strong-motion records from the 

northern California (Lorna Prieta) earthquake of October 17, 1989: U.S. Geological Survey 

Open-File Report 89-0568, 85 p. 

Salsman, M.J., and Switzer, J.C., 1990, Strong-motion records from earthquakes of June 13, 1988, 

November 10, 1988, and April 3, 1989, on the Calaveras Fault, central California: U.S. Geological Survey Open-File Report 90-481, 36 p. 

2 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989 

[Station owners: ACOE, U.S. Army Corps of Engineers; BECH, Bechtel Power Corporation; COOT, California Department of 

Transportation; CDWR, California Department of Water Resources; JCG, JCG Finance Corporation of America; MWD, Los 

Angeles Metropolitan Water District; OWNR, Owner of building; UCB, University of California at Berkeley; USGS, U.S. Geological 

Survey; VA, U.S. Veterans Administration. Instrument trigger time in seconds after the minute or the following minute listed in 

earthquake column. S-minus trigger denotes ~wave-arrival-minus-trigger-time ~!) or 2,-wave-minus-~ -wave-arrival time <2.-~ in 

brackets) interval. 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. Duration is interval between first and last peaks of 

acceleration greater than 0.10 g. Numbers in parentheses refer to footnotes at end of table.] 

Earthquake 

9 January 1989 

0803:26.1 G.m.t. 

Eastern Calif. 

37.548N, 118.779W 

Magnitude 3.2 ML 

11 January 1989 

2334:26.5 G.m.t. 

Southern Calif. 

33.185N, 115.593W 

Magnitude 3.2 ML 

19 January 1989 

0653:28.8 G.m.t. 

Southern Calif. 

33.920N, 118.630W 

Magnitude 5.0 ML 

Station Name 

(Owner) 

McGee Creek 

Mammoth Lakes 

(USGS) SMA-1 

McGee Creek 

Mammoth Lakes 

(USGS) CRA-1 

166 m Downhole 

35m Downhole 

Surface 

1 mDownhole 

Salton Sea 

Wildlife Refuge 

(USGS) SMA-1 

Jensen Filter Plant 

Balboa Ave. 

(MWD) 

Basement Admin. Bldg. 

Generator Bldg. 

Reservoir Roof 

Lawndale 

15000 Aviation Blvd. 

(USGS) 

Coordinates Trigger 

(Lat. 0 N time 

Long. 0 W) 

37.550 

118.811 

37.550 

118.811 

33.178 

115.615 

34.312 

118.496 

33.895 

118.377 

3 

(4) 

(4) 

34:25.6 

(3) 

(3) 

S-minus Direction 

trigger (az) 

(s) 

1.0 

1.0 

1.1 

6.7 

3.5 

315 

Up 

225 

(1) 

360 

Up 

270 

Maximum 

amplitude 

(g) 

(1) 

(1) 

(1) 

(1) 

(1) 

.05 

.04 

.03 

(1) 

(1) 

.10 

.03 

.05 

Duration 

(s) 

1 peak 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

19 January 1989 Los Angeles 34.063 (3) 3.6 (1) 

0653:28.8 G.m.t. Brentwood VA Hospital 118.462 

Southern Calif. (VA) 

33.920N, 118.630W 

Magnitude 5.0 ML Los Angeles 34.053 53:33.8 3.8 

(Continued) Wadsworth VA Hospital 118.452 

(VA) 

Ground Site South 325 .03 

Up .02 

235 .07 

Structure Array: 

Ch. 1-6th Floor, North 235 .15 1.0 

Ch. 2-6th Floor, North-center 235 .11 1 peak 

Ch. 3-6th Floor, Center 235 .13 0.3 

Ch. 4-6th Floor, Center 055 .11 0.3 

Ch. 5-6th Floor, South 055 .05 

Ch. 6-6th Floor, South 325 .05 

Ch. 7- Basement, North-center 325 .10 0.2 

Ch. 8- Basement, North-center 235 .07 

Ch. 9- Basement, North-center Down .03 

Malibu 34.093 53:36.6 1.2 (1) 

Kilpatrick School 118.836 

(USGS) 

Malibu Canyon 34.087 53:32.8 2.5 090 .07 

Monte Nido Fire Stn 118.693 Up .05 

(USGS) 360 .05 

Sepulveda Canyon 34.097 (3) 3.3 (1) 

Control Facility 118.478 

(USGS) 

Sepulveda Dam 34.167 (3) 4.4 

San Fernando Valley 118.469 

(ACOE) 

Crest (1) 

Downstream (1) 

Sepulveda VA Hospital 34.249 (3) 5.3 (1) 

Bldg. 40 (VA) 118.475 

Topanga Fire Station 34.084 53:32.8 2.8 270 .10 1 peak 

(USGS) 118.600 Up .09 

180 .06 

4 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger 5-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

1 February 1989 Waimea, Hawaii 20.026 (4) (2) (1) 

0803G.m.t. Fire Station 155.664 

Hawaii (USGS) 

Epicenter and 

magnitude unknown 

3 February 1989 Salton Sea 33.178 48:47.7 0.8 315 .03 

2348:46.7 G.m.t. Wildlife Refuge 115.615 Up .04 

Southern Calif. (USGS) SMA-1 225 .10 1 peak 

33.180N, 115.600W 

Magnitude 3.4 ML 

7 February 1989 Salton Sea 33.178 12:47.8 0.9 (1) 

1112 G.m.t. Wildlife Refuge 115.615 

Southern Calif. (USGS) SMA-1 

Epicenter and 

magnitude unknown 

16 February 1989 Salton Sea 33.178 17:08.7 1.1 315 .08 

1917:07.7 G.m.t. Wildlife Refuge 115.615 Up .06 

Southern Calif. (USGS) SMA-1 225 .17 0.1 

33.170N, 115.600W 

Magnitude 3.4 ML Imperial Wildlife 33.097 17:12.0 1.4 (1) 

Liquefaction Array 115.530 

(USGS) 

22 February 1989 Hollister 36.88 19:55.2 1.9 (1) 

0419:53.2 G.m.t. Differential Array 121.413 

Central Calif. (USGS) 

36.907N, 121.363W 

Magnitude 2.9 ML 

27 February 1989 McGee Creek 37.55 (4) (2) (1) 

1903:09.4 G.m.t. Mammoth Lakes 118.811W 

Eastern Calif. (USGS) SMA-1 

37.596N, 118.886W 

Magnitude 3.4 ML McGee Creek 37.550 (4) (2) 

Mammoth Lakes 118.811 

(USGS) CRA-1 

166m Downhole (1) 

35m Downhole (1) 

Surface (1) 

1 mDownhole (1) 

5 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

6 March 1989 Salton Sea 33.178 16:48.3 1.1 315 .27 1.0 

2216:47.6 G.m.t. Wildlife Refuge 115.615 Up .25 2.1 

Southern Calif. (USGS) SMA-1 225 .34 2.1 

33.180N, 115.600W 

Magnitude 4.3 ML Imperial Wildlife 33.097 (3) 1.8 

Liquefaction Array 115.530 

(USGS) 

Channel 1- Surface 360 .15 1 peak 

Channel 2- Surface Up .11 0.6 

Channel 3- Surface 090 .10 1 peak 

Channel 4- 7.5-m Downhole * .06 

Channel 5- 7.5-m Downhole * .05 

Channel6-7.5-m Downhole * .05 

*Unknown 

Note: Channels 7-12 non-functional piezometers. 

6 March 1989 Salton Sea 33.178 20:39.3 1.1 315 .05 

2220:38.6 G.m.t. Wildlife Refuge 115.615 Up .03 

Southern Calif. (USGS) SMA-1 225 .09 

33.180N, 115.620W 

Magnitude 3.3 ML Imperial Wildlife 33.097 20:47.5 1.5 (1) 

Liquefaction Array 115.530 

(USGS) 

6 March 1989 Salton Sea 33.178 45:56.4 0.4 (1) 

2245G.m.t. Wildlife Refuge 115.615 

Southern Calif. (USGS) SMA-1 

Epicenters and 

Note: One additional record1 magnitudes unknown recovered at Salton Sea Wildlife Refuge SMA-1. 

6 March 1989 Salton Sea 33.178 57:34.8 1.0 315 .16 0.2 

2257:34.2 G.m.t. Wildlife Refuge 115.615 Up .20 0.5 

Southern Calif. (USGS) SMA-1 225 .15 0.3 

33.200N, 115.600W 

Magnitude 3.2 ML 

6 March 1989 Salton Sea 33.178 58:33.1 [1.2] 315 .06 

2258:32.5 G.m.t. Wildlife Refuge 115.615 Up .06 

Southern Calif. (USGS) SMA-1 225 .09 

33.180N, 115.600W 

Magnitude 3.6 ML 

6 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger 5-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

7March 1989 Imperial Wildlife 33.097 25:02.5 1.3 (1) 

0024:58.1 G.m.t. Liquefaction Array 115.530 

Southern Calif. (USGS) 

33.180N, 115.610W 

Magnitude 4.1 ML Channel 1- Surface 360 .05 

Channel 2- Surface Up .03 

Channel 3- Surface 090 .07 

Channel 4- 7.5-m Downhole * .03 

Channel 5- 7.5-m Downhole * .01 

Channel 6- 7.5-m Downhole * .02 

*Unknown 

Note: Channels 7-12 non-functional piezometers. 

7March 1989 Imperial Wildlife 33.097 47:31.8 1.4 (1) 

0147:27.5 G.m.t. Liquefaction Array 1i5.530 

Southern Calif. (USGS) 

33.180N, 115.610W 

Magnitude 3.4 ML 

7 March 1989 Imperial Wildlife 33.097 43:48.5 1.3 (1) 

0743:44.1 G.m.t. Liquefaction Array 115.530 

Southern Calif. (USGS) 

33.180N, 115.590W 

Magnitude 4.2 ML 

27May 1988- Eel River Valley Array 40.563 (3) 4.5 (1) 

8 March 1989 Centerville Beach 124.348 

Northern Calif. (USGS) 

Epicenter and 

magnitude unknown Eel River Valley Array 40.644 (3) (2) (1) 

Loleta Fire Station 124.219 

(USGS) 

25 November 1988- Calipatria 33.13 (3) 1.5 315 .05 

10 March 1989 Fire Station 115.52 Up .09 

Southern Calif. (USGS) 225 .06 

Epicenters and 

Note: Two additional records1 magnitudes unknown recovered at Calipatria Fire Station. 

10 March 1989 McGee Creek 37.550 (4) (2) (1) 

0140:25.4 G.m.t. Mammoth Lakes 118.811 

Eastern Calif. (USGS) SMA-1 

37.525N, 118.874W 

Magnitude 3.3 ML 

7 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

10 March 1989 McGee Creek 37.550 (4) (2) 

0140:25.4 G.m.t. Mammoth Lakes 118.811 

Eastern Calif. (USGS) CRA-1 

37.525N, 118.874W 

Magnitude 3.3 ML 166m Downhole (1) 

(Continued) 

35m Downhole (1) 

Surface (1) 

1 mDownhole (1) 

10 March 1989 McGee Creek 37.550 (4) (2) (1) 

0153:21.1 G.m.t. Mammoth Lakes 118.811 

Eastern Calif. (USGS) SMA-1 

37.525N, 118.873W 

Magnitude 3.2 ML McGee Creek 37.550 (4) (2) 

Mammoth Lakes 118.811 

(USGS) CRA-1 

166m Downhole (1) 

35m Downhole (1) 

Surface (1) 

1 mDownhole (1) 

24 March 1989 Salton Sea 33.178 28:11.0 1.0 (1) 

2228:10.0 G.m.t. Wildlife Refuge 115.615 

Southern Calif. (USGS) SMA-1 

33.180N, 115.590W 

Magnitude 3.2 ML 

24 March 1989 Calipatria 33.13 (3) 1.7 (1) 

2316:48.0 G.m.t. Fire Station 115.52 

Southern Calif. (USGS) 

33.030N, 115.580W 

Magnitude 4.0 ML Salton Sea 33.178 16:49.9 1.1 315 .08 

Wildlife Refuge 115.615 Up .16 0.4 

(USGS) SMA-1 225 .08 

3 April1989 Calaveras Array 37.452 (3) 1.2 180 .07 

1746:34.4 G.m.t. Calaveras Res. South 121.807 Up .02 

Central Calif. (USGS) 090 .08 

37.422N, 121.795W 

Magnitude 4.7 ML Calaveras Array 37.396 46:36.8 1.3 360 .09 

Cherry Flat Reservoir 121.756 Up .07 

(USGS) 270 .16 0.5 

8 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner} (Lat. oN time trigger (az} amplitude (s} 

Long. 0 W} (s} (g) 

3 April1989 Sunnyvale 37.402 46:39.3 3.2 (1) 

1746:34.4 G.m.t. Colton Avenue 122.024 

Central Calif. (USGS) 

37.422N, 121.795W 

Magnitude 4.7 ML Anderson Dam 37.166 46:46.2 (2) 

(Continued) (USGS) 121.628 

Crest (1) 

Structure Array: 

Ch. 1-12 (1) 

SanJose,101/280/680 37.340 (4) 1.0 322 .09 

Freeway Interchange 121.851 Up .04 

(USGS/COOT) 232 .06 

7 April1989 Santa Ana 33.7517 (3) 2.4 360 .04 

2007:30.2 G.m.t. 400 Civic Center Dr. 117.870W Up .04 

Southern Calif. (USGS) 270 .19 0.4 

33.620N, 117.900W 

Magnitude 4.5 ML Newport Beach 33.618 (3) 1.5 

840 Newport Center Dr. 117.878 

(USGS) 

Structure Array 

Ch. 1- Tower 2, Level 1, Center 360 .43 0.5 

Ch. 2- Tower 2, Level 1, Center Up .11 0.1 

Ch. 3- Tower 2, Levell, Center 090 .30 0.3 

Ch. 4- Tower 2, Level2, West 360 * 

Ch. 5- Tower 2, Level 2, Center 360 .66 0.4 

Ch. 6- Tower 2, Level 2, Center 090 .50 0.5 

Ch. 7- Tower 2, Level 9, South 090 .18 0.2 

Ch. 8- Tower 2, Level 10, Center 360 * 

Ch. 9- Tower 2, Level10, Center 090 * 

Ch. 10- Tower 1, Level9, East 360 .37 0.3 

Ch. 11- Tower 1, Level10, Center 270 .30 3.2 

Ch. 12- Tower 1, Level10, Center 360 .67 3.6 

* Transducer inoperative 

14 April1989 Bear Valley Station 10 36.532 45:57.0 1.5 (1) 

0645:55.0 G.m.t. Webb Residence 121.143 

Central Calif. (USGS) 

36.563N, 121.202W 

Magnitude 3.3 ML 

9 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

27 April 1989 Blytheville, Ark. 35.92 (3) 0.7 (1) 

1647:49.8 G.m.t. Fire Station 89.92 

New Madrid, Mo. (USGS) 

36.006N, 89.768W 

Magnitude 4.6 MB 

Hayti, Mo. 36.237 (3) 0.5 360 .02 

Pemiscot Co. Hosp. 89.740 Up .04 

(USGS) 270 .11 1 peak 

20May 1989 Bear Valley Station 1 36.57 57:27.5 0.7 310 .07 

0857:26.8 G.m.t. CDF Fire Station 121.18 Up .02 

Central Calif. (USGS) 220 .07 

36.578N, 121.212W 

Magnitude 2.8 ML 

5 October 1988- Orange Co. Reservoir 33.93 (3) (2) 

25 May 1989 (MWD) 117.88 

Southern Calif. 

Epicenter and Abutment (1) 

magnitude unknown 

25 May 1989 Parkfield 35.79 40:14.3 1.0 315 .09 

1240:09.3 G.m.t. Liquefaction Array 120.33 Up .13 1 peak 

Central Calif. (USGS) 225 .14 1 peak 

35.862N, 120.398W 

Magnitude 3.6 ML Array 1: 

1. AC-1, 38' (1) 

2. AC-1, 38' (1) 

3. AC-1, 38' (1) 

4. AC-4, 9' (1) 

5. AC-4, 9' (1) 

6. AC-4, 9' (1) 

7. Pressure Transducer, A-1, 16.7' * 

8. Pressure Transducer, A-3, 16.9' * 

9. Pressure Transducer, A-4, 13.1' * 

10. Pressure Transducer, B-2, 17' * 

11. Pressure Transducer, B-4, 31.1' * 

12. Pressure Transducer, C-3, 20.7' * 

10 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

25May1989 Array 2: 

1240:09.3 G.m.t. 1. AC-3, 96' (1) 

Central Calif. 2. AC-3, 96' (1) 

35.862N, 120.398 3. AC-3,96' (1) 

Magnitude 3.6 ML 4. AC-2, 13' (1) 

(Continued) 5. AC-2, 13' (1) 

6. AC-2, 13' (1) 

7. Surface 315 .08 

8. Surface Up .08 

9. Surface 045 .12 1 peak 

10. Pressure Transducer, D-1, 30.6' * 

11. Pressure Transducer, D-3,41.2' * 

12. Pressure Transducer, C-1,20' * 

* Piezometer trace. 

12June1989 Los Angeles 34.081 (3) 1.1 130 .15 0.1 

1657:18.4 G.m.t. Jasper St. 118.188 Up .08 

Southern Calif. (USGS) 040 .08 

34.030N, 118.180W 

Magnitude 4.4 ML Los Angeles 33.996 (3} 2.5 (1) 

Bulk Mail Facility 118.162 

(USGS) 

Garvey Reservoir 34.050 (3} 1.6 

Monterey Park 118.114 

(MWD) 

Crest 114 .06 

Up .02 

024 .06 

Abutment Bldg. 114 .15 1 peak 

Up .08 

024 .13 1 peak 

Los Angeles 34.067 (3} (2) 

1111 Sunset Blvd. 118.248 

(MWD) 

Basement 348 .07 

Up .03 

258 .18 0.1 

4th Floor 348 .06 

Up .06 

258 .15 0.2 

Roof (8th) 348 .05 

Up .18 0.8 

258 .05 

1 1 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

12June1989 Jensen Filter Plant 34.309 (3) 4.0 

1657:18.4 G.m.t. Balboa Ave. 118.499 

Southern Calif. (MWD) 

34.030N, 118.180W 

Magnitude 4.4 ML Basement Admin. Bldg. (1) 

(Continued) 

Generator Bldg. (1) 

Reservoir Roof (1) 

Los Angeles 34.052 57:21.9 2.6 

1100 Wilshire Blvd. 118.263 

(JCG/USGS) 

Basement 4 NW (1) 

Basement 3 NE 298 .06 

Up .03 

208 .03 

Basement 3 SE 298 .05 

Up .03 

208 .04 

Structure Array: 

Ch. 1- 12th Floor, North 298 .05 

Ch. 2- 12th Floor, North 208 .04 

Ch. 3- 12th Floor, South 208 .02 

Ch. 4- 13th Floor, North 298 .04 

Ch. 5- 13th Floor, North 208 .07 

Ch. 6- 13th Floor, South 208 .03 

Ch. 7- 32nd Floor, North 298 .02 

Ch. 8- 32nd Floor, North 208 .04 

Ch. 9- 32nd Floor, South 208 .05 

Ch. 10- Ground Floor, North 298 .05 

Ch. 11- Ground Floor, North 208 .06 

Ch. 12- Ground Floor, South 208 .03 

Whittier Narrows Dam 34.020 (3) 0.9 

Pico Rivera 118.053 

(ACOE) 

Crest 028 .08 

Up .05 

298 .07 

Upstream 152 .08 

Up .03 

062 .05 

12 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az} amplitude (s) 

Long. 0 W} (s} (g) 

12June1989 Norwalk 33.92 (3) 0.8 

1657:18.4 G.m.t. 12400 Imperial Hwy 118.07 

Southern Calif. (USGS/BECH) 

34.030N, 118.180W 

Magnitude 4.4 ML Basement (1) 

(Continued) 

4th Floor 090 .02 

Up .01 

360 .06 

Roof (8th Floor) 090 .02 

Up .02 

360 .06 

South Ground Site 33.915 (3) (2) (1) 

118.067 

North Ground Site 33.917 (3} 3.0 (1) 

118.067 

Prado Dam 33.890 (3) (2) 

Corona 117.641 

(ACOE) 

Crest (1) 

Downstream (3) 0.3 090 .08 

Up .03 

360 .08 

Brea Dam 33.890 (3} 0.8 

Fullerton 117.925 

(ACOE) 

Crest (1) 

I Left Abutment (1) 

Alhambra 34.085 (3) 

900 S. Fremont 118.149 

(USGS) 

12th Floor 2.6 090 .04 

Up .07 

360 .07 

13 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger 5-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

12June1989 Whittier 33.977 (3) 2.9 

1657:18.4 G.m.t. 7215 Bright Ave. 118.036 

Southern Calif. (USGS) 

34.030N, 118.180W 

Magnitude 4.4 ML Basement 180 .03 

(Continued) Up .02 

090 .06 

Carbon Canyon Dam 33.914 (3) (2) 

Brea 117.839 

(ACOE) 

Crest (1) 

12June1989 Los Angeles 34.081 (3) 2.3 130 .08 

1722:25.5 G.m.t. 4407 Jasper St. 118.188 Up .05 

Southern Calif. (USGS) 040 .06 

34.020N, 118.180W 

Magnitude 4.1 ML Los Angeles 33.996 (3) 2.4 (1) 

Bulk Mail Facility 118.162 

(USGS) 

Garvey Reservoir 34.050 (3) 2.4 

Monterey Park 118.114 

(MWD) 

Crest (1) 

Abutment Bldg. 114 .05 

Up .03 

024 .04 

Los Angeles 34.067 (3) 2.1 

1111 Sunset Blvd. 118.248 

(MWD) 

Basement 348 .05 

Up .02 

258 .09 

4th Floor 348 .03 

Up .03 

258 .08 

Roof (8th) 348 .05 

Up .18 0.8 

258 .05 

14 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

12June1989 Jensen Filter Plant 34.309 (3) (2) 

1722:2S.5 G.m.t. Balboa Ave. 118.499 

Southern Calif. (MWD) 

34.020N, 118.180 

Magnitude 4.1 ML Administration Bldg. (1) 

(Continued) Basement 

Generator Bldg. (1) 

Reservoir Roof (1) 

Los Angeles 34.0S2 22:29.1 2.2 

1100 Wilshire Blvd. 118.499 

(JCG/USGS) 

Basement 4 NW (1) 

Basement 3 NE 298 .04 

Up .02 

208 .OS 

Basement 3 SE (1) 

Structure Array: 

Ch. 1- 12th Floor, North 298 .03 

Ch. 2- 12th Floor, North 208 .04 

Ch. 3- 12th Floor, South 208 .02 

Ch. 4- 13th Floor, North 298 .04 

Ch. S- 13th Floor, North 208 .06 

Ch. 6- 13th Floor, South 208 .02 

Ch. 7- 32nd Floor, North 298 .01 

Ch. 8- 32nd Floor, North 208 .02 

Ch. 9- 32nd Floor, South 208 .01 

Ch. 10- Ground Floor, North 298 .03 

Ch. 11- Ground Floor, North 208 .03 

Ch. 12- Ground Floor, South 208 .04 

Alhambra 34.08S (3) 2.8 

900 S. Fremont 118.149 

(USGS) 

12th Floor (1) 

Whittier Narrows Dam 34.031 (3) 2.3 

Pico Rivera 118.054 

(ACOE) 

Upstream 1S2 .OS 

Up .02 

062 .03 

15 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger 5-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

26June1989 Hawaii National Park 19.423 (4) (2) (1) 

0327:03.9 G.m.t. HVO Admin. Bldg. 155.291 

Hawaii (USGS) 

19.362N, 155.083W 

Magnitude 6.2 Ms Hawaii National Park 19.434 (4) (2) (1) 

HVO Warehouse 155.264 

(USGS) 

Hilo, Hawaii 19.72 (4) 5.7 352 .16 0.5 

Hilo Hospital 155.12 Up .05 

(USGS) 262 .07 

Hilo, Hawaii 19.734 (4) (2) 360 .07 

Sewage Plant 155.050 Up .03 

(USGS) 270 .05 

Hilo, Hawaii 19.707 (4) 5.3 360 .11 2 peaks 

University of Hawaii 155.083 Up .04 

(USGS) 270 .04 

Honokaa, Hawaii 20.080 (4) (2) (1) 

Police Station 155.465 

(USGS) 

Honomalino, Hawaii 19.169 (4) (2) (1) 

Macadamia Orchard 155.169 

(USGS) 

Laupahoehoe, Hawaii 19.987 (4) (2) (1) 

Post Office 155.236 

(USGS) 

Mauna Kea, Hawaii 19.752 (4) (2) (1) 

State Park 155.530 

(USGS) 

Mauna Kea Summit 19.826 (4) (2) (1) 

U.K. Observatory 155.473 

(USGS) 

Pahala, Hawaii 19.20 (4) (2) 360 .05 

Kau Hospital 155.47 Up .02 

(USGS) 270 .05 

Pahoa, Hawaii 19.498 (4) (2) 087 .19 5.1 

Fire Station 155.951 Up .07 

(USGS) 357 .21 4.4 

16 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station N arne Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

26June1989 Waimea, Hawaii 20.026 (4) (2) (1) 

0327:03.9 G.m.t. Fire Station 155.664 

Hawaii (USGS) 

19.362N, 155.083W 

Magnitude 6.2 Ms Waiohinu, Hawaii 19.070 (4) (2) (1) 

(Continued) K'au Baseyard 155.615 

(USGS) 

30June1989 Fairbanks University 64.86 (3) (2) (1) 

0250:11.5 G.m.t. Duckering Hall 147.83 

Central Alaska (USGS) 

64.897N, 147.707W 

Magnitude 3.6 ML Fairbanks University 64.86 (3) (2) (1) 

USGS Observatory 147.83 

(USGS) 

11 July 1989 Chalfant Valley Array 37.53 (4) 4.1 (1) 

0413:34.2 G.m.t. Fire Station 118.37 

Eastern Calif. (USGS) 

37.418N, 118.642 

Magnitude 4.4 ML Chalfant Valley Array 37.402 (4) 3.7 (1) 

Laws 118.346 

(USGS) 

McGee Creek 37.550 (4) (2) 180 .06 

Mammoth Lakes 118.811 Up .03 

(USGS) SMA-1 090 .03 

McGee Creek 37.550 (4) (2) 

Mammoth Lakes 118.811 

(USGS) CRA-1 

166m Downhole (1) 

35m Downhole (1) 

Surface (1) 

1 mDownhole (1) 

11 July 1989 Chalfant Valley Array 37.53 (4) 0.9 (1) 

0754:54.2 G.m.t. Fire Station 118.37 

Eastern Calif. (USGS) 

37.543N, 118.438W 

Magnitude 3.6 ML Chalfant Valley Array 37.62 (4) 1.1 360 .06 

White Mountain Ranch 118.39 Up .02 

(USGS) 270 .07 

17 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 July 1989 Hollister 36.888 07:24.1 2.0 (1) 

1107:22.1 G.m.t. Differential Array 121.413 

Central Calif. (USGS) 

36.907N, 121.348W 

Magnitude 3.7 ML 

18 July 1989 Hollister 36.888 35:37.9 2.0 (1) 

1535:36.0 G.m.t. Differential Array 121.413 

Central Calif. (USGS) 

36.903N, 121.342W 

Magnitude 2.8 ML 

20 July 1989 Hollister 36.888 58:46.0 2.0 (1) 

0558:44.0 G.m.t. Differential Array 121.413 

Central Calif. (USGS) 

36.898N, 121.343W 

Magnitude 3.1 ML 

2 August 1988- Los Angeles 34.06 (3) 

3 August 1989 3000 Leeward Ave. 118.29 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (13) 2.3 090 .05 

Up .07 

360 .12 1 peak 

2.2 090 .14 0.4 

Up .06 

360 .11 1 peak 

2.9 090 .10 1 peak 

Up .05 

360 .11 1 peak 

Note: One additional record1 recovered at 3000 Leeward Ave. 

18 August 1988- Los Angeles 34.063 (3) 

4 August 1989 10550 Wilshire Blvd. 118.431 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (14) 3.8 287 .05 

Up .04 

197 .08 

Note: Two additional records1 recovered at 10550 Wilshire Boulevard. 

1 8 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

8 August 1989 Fremont 37.535 (3) 0.7 180 .06 

0813:27.5 G.m.t. Emerson Court 121.929 Up .01 

Central Calif. (USGS) 090 .03 

37.130N, 121.952W 

Magnitude 5.4 ML Milpitas 37.450 (3) 4.9 (1) 

Rivera St. 121.896 

(USGS) 

Palo Alto 37.400 (3) 4.5 

VA Hospital, Bldg. 1 122.140 

(VA) 

Basement (1) 

Roof (7th level) 302 .15 3.6 

Up .06 

212 .16 0.6 

Sunnyvale 37.402 (3) 4.5 360 .06 

Colton Ave. 122.024 Up .03 

(USGS) 270 .05 

Sunnyvale 37.418 (3} 4.2 090 .05 

1111 Lockheed Way 122.031 Up .02 

(USGS) 360 .05 

Stanford University 37.419 (4} 5.4 360 .08 

SLAC Test Lab. 122.205 Up .07 

(USGS) 270 .06 

San Francisco 37.806 (4} (2} (1) 

Golden Gate Bridge 122.472 

(USGS) 

Events prior to Los Angeles 34.044 (3) 

9 August 1989 12121 Wilshire Blvd. 118.467 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (15) (2) 225 .05 

Up .11 1 peak 

135 .07 

225 .05 

Up .05 

135 .08 

Note: Five additional records1 recovered at 12121 Wilshire Boulevard. 

19 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

4June 1988- Mauna Kea, Hawaii 19.752 (3) (2) 360 .06 

21 August 1989 State Park 155.530 Up .05 

Hawaii (USGS) 270 .05 

Epicenters and 

One additional record1 magnitudes unknown Note: recovered at Mauna Kea State Park. 

Mauna Loa, Hawaii 19.539 (3) (2) 360 .04 

Weather Observatory 155.580 Up .02 

(USGS) 270 .07 

2 August 1988- Los Angeles 34.039 (3) 

25 August 1989 1150 S. Hill St. 118.259 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown lOth floor 3.5 307 .01 

Up .07 

217 .02 

Note: Three additional records1 recovered at 1150 S. Hill St. 

21 September 1989 Eel River Valley Array 40.498 41:26.3 5.7 (1) 

1741:18.0 G.m.t. Bunker Hill FAA 124.294 

Northern Calif. (USGS) 

40.327N, 124.705W 

Magnitude 4.8 ML Eel River Valley Array 40.563N 41:26.6 6.3 360 .16 1 peak 

Centerville Beach 134.348W Up .03 

Navy Facility 270 .09 

(USGS) 

Eel River Valley Array 40.58 (4) 7.1 360 .12 1 peak 

Ferndale Fire Station 124.26 Up .03 

(USGS) 270 .08 

Eel River Valley Array 40.599 (3) 7.8 360 .05 

Fortuna Fire Station 124.154 Up .02 

(USGS) 270 .04 

Eel River Valley Array 40.644 (3) 7.7 360 .08 

Loleta Fire Station 124.219 Up .07 

(USGS) 270 .05 

30 September 1989 Chalfant Valley Array 37.402 (4) (2) (1) 

2349 G.m.t. Laws 118.346 

Eastern Calif. (USGS) 

Epicenter and 

magnitude unknown 

20 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

1 October 1989 Bear Valley Station 1 36.573 08:37.1 0.7 (1) 

2208:36.0 G.m.t. CDF Fire Station 121.184 

Central Calif. (USGS) 

36.555N, 121.177W 

Magnitude 3.1 ML Bear Valley Station 10 36.532 08:37.2 1.0 (1) 

Webb Residence 121.143 

(USGS) 

30 August 1987- Bear Valley Station 12 36.658 (3) (2) (1) 

17 October 1989 Williams Ranch 121.249 

Central Calif. (USGS) 

Epicenters and 

Note: Seven additional records1 magnitudes unknown recovered at Williams Ranch. 

22 February 1988- Bear Valley Station 5 36.673 (3) 2.2 310 .09 

17 October 1989 Callens Ranch 121.195 Up .03 

Central Calif. (USGS) 220 .05 

Epicenter and 

magnitude unknown Bear Valley Station 6 36.504 (3) (2) (1) 

James Ranch 121.101 

(USGS) 

22 February 1989- San Francisco 37.783 (3) (2) 

17 October 1989 VA Hospital 122.504 

Central Calif. (VA) 

Epicenter and 

magnitude unknown 7th floor 185 .09 

Up .03 

095 .06 

18 October 1989 Anderson Dam 37.166 

0004:15.2 G.m.t. Morgan Hill 121.628 

Northern Calif. (USGS) 

37.036N, 121.883W 

Magnitude 7.0 ML Crest (3) 2.0 340 .26 10.4 

Up .19 6.1 

250 .39 13.2 

Downstream 04:22.9 3.4 340 .25 7.3 

Up .17 6.9 

250 .26 8.5 

Left Abutment (3) 2.3 340 .08 

Up .05 

250 .07 

21 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Structure Array: 

0004:15.2 G.m.t. Ch. 1- Mid-dam, Center (4) 3.3 153 .11 5.9 

Northern Calif. Ch. 2- Mid-dam, Center 243 .14 8.8 

37.036N, 121.883W Ch. 3- Mid-dam, Right 063 .14 6.4 

Magnitude 7.0 ML Ch. 4-Toe 333 .18 4.7 

(Continued) Ch. 5- Toe Up .16 3.9 

Ch. 6- Toe 063 .23 5.6 

Ch. 7- Right Crest 333 .32 11.6 

Ch. 8- Right Crest Up .16 5.6 

Ch. 9- Right Crest 063 .43 12.3 

Ch. 10- Center Crest 333 .32 10.6 

Ch. 11- Center Crest Up .23 9.6 

Ch. 12- Center Crest 063 .38 12.2 

SanJose,101/280/680 37.340 (4) 3.2 322 .18 10.5 

Freeway Interchange 121.851 Up .08 

(USGS, CDOT) 232 .13 8.9 

Calaveras Array 37.396 (3) 5.7 360 .09 

Cherry Flat Reservoir 121.756 Up .06 

(USGS) 270 .07 

Sunnyvale 37.402 04:24.8 5.7 360 .22 9.8 

Colton Avenue 122.024 Up .10 4.8 

(USGS) 270 .19 9.5 

Hollister Airport 36.888 04:26.5 5.6 255 .29 8.0 

Differential Array 121.413 Up .16 3.9 

(USGS) 165 .27 4.6 

Palo Alto 37.40 (3) 3.5 

VA Hospital, Bldg. 1 122.14 

(VA) 

Basement 302 .34 2.2 

Up .20 1.4 

212 .38 5.0 

Roof (7th level) 302 1.09 13.0 

Up .64 12.0 

212 .79 13.0 

Hollister 36.851 04:27.5 5.8 180 .23 7.7 

City Hall Annex 121.402 Up .22 6.2 

Basement (USGS) 090 .25 6.4 

Calaveras Array 37.452 (3) 6.5 180 .13 3.5 

Calaveras Res. South 121.807 Up .07 

(USGS) 090 .08 

22 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Hollister 36.765 (4) 3.4 360 .06 

0004:15.2 G.m.t. SAGO Vault 121.446 Up .05 

Northern Calif. (USGS) 270 .04 

37.036N, 121.883W 

Magnitude 7.0 ML Bear Valley Station 14 36.569 04:36.5 7.2 310 .10 1 peak 

(Continued) Upper Butts Ranch 121.431 Up .08 

(USGS) 220 .10 1 peak 

Milpitas 37.437 04:25.0 4.6 360 .09 

Rivera St. 121.879 Up .20 2.0 

(USGS) 270 .11 2 peaks 

Stanford University 37.419 (4) 6.2 360 .29 6.7 

SLAC Test Lab. 122.205 Up .10 2 peaks 

(USGS) 270 .19 2.6 

Menlo Park 37.468 (3) 3.2 110 .12 9.5 

VA Hospital, Bldg. 37 122.157 Up .11 0.9 

(VA) 020 .27 3.3 

Fremont 37.535 (3) 7.2 180 .15 5.2 

Emerson Court 121.929 Up .07 

(USGS) 090 .20 5.1 

APEEL Array Station 9 37.47 04:31.1 4.7 227 .11 1 peak 

Crystal Springs Res. 122.32 Up .06 

(USGS) 137 .12 1 peak 

Calaveras Array 37.597 (3) 5.5 180 .07 

Sunol Fire Station 121.880 Up .03 

(USGS) 090 .10 1 peak 

APEEL Array Station 2 37.52 (3) 3.5 133 .23 3.2 

Redwood City 122.25 Up .08 

(USGS) 043 .28 4.4 

Foster City 37.555 (3) 4.8 360 .12 3.7 

Menhaden Court 122.248 Up .09 

(USGS) 270 .11 0.2 

Del Valle Dam 37.615 (3) 

(CDWR) 121.745 

Crest 5.4 065 .08 

Up .07 

335 .08 

Toe 5.1 065 .06 

Up .03 

335 .04 

23 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Livermore 37.625 (3) 6.7 

0004:15.2 G.m.t. VA Hospital, Bldg. 62 121.762 

Northern Calif. (VA) 

37.036N, 121.883W 

Magnitude 7.0 ML Basement 125 .06 

(Continued) Up .03 

035 .05 

Roof (7th) 125 .08 

Up .03 

035 .15 4.8 

Bear Valley Station 12 36.658 (3) 9.3 310 .17 5.7 

Williams Ranch 121.249 Up .10 1 peak 

(USGS) 220 .16 6.6 

APEEL Array Station 2E 37.66 054 .13 4.1 

Hayward, Muir School 122.08 Up .06 

(USGS) 324 .16 4.4 

Bear Valley Station 5 36.673 04:33.0 6.6 310 .07 

Callens Ranch 121.195 Up .04 

(USGS) 220 .07 

Bear Valley Station 1 36.573 04:36.5 3.3 310 .08 

CDF Fire Station 121.184 Up .05 

(USGS) 220 .08 

Hayward City Hall 37.679 

(USGS) 122.082 

Ground Floor 04:34.0 6.4 064 .05 

Up .03 

334 .06 

Ground Site North 04:33.8 6.9 064 .06 

Up .02 

334 .06 

Ground Site South 04:32.5 6.7 064 .09 

Up .03 

334 .10 1 peak 

24 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Structure Array: 

0004:15.2 G.m.t. Ch. 1- 12th Floor, West 334 .10 4.2 

Northern Calif. Ch. 2- 12th Floor, Center 334 .10 1 peak 

37.036N, 121.883W Ch. 3- 12th Floor, Center 064 .13 4.5 

Magnitude 7.0 ML Ch. 4- 7th Floor, West 334 .09 

(Continued) Ch. 5-7th Floor, Center 334 .08 

Ch. 6-7th Floor, Center 064 .09 

Ch. 7- 3rd Floor, West 334 Inoperative 

Ch. 8- 3rd Floor, Center 334 .07 

Ch. 9- 3rd Floor, Center 064 .08 

Ch. 10- 3rd Floor, Southwest Up .05 

Ch. 11- 3rd Floor, Southwest Up .04 

Ch. 12- Ground Floor, West 334 .07 

Calaveras Array 37.709 (3) 6.8 360 .08 

Dublin Fire Station 121.932 Up .03 

(USGS) 270 .09 

Bear Valley Station 10 36.532 04:34.0 8.5 310 .10 1 peak 

Webb Residence 121.143 Up .05 

(USGS) 220 .13 3.6 

Bear Valley Station 7 36.483 04:36.4 5.1 310 .04 

Pinnacles Nat'l Mon. 121.180 Up .03 

(USGS) 220 .06 

San Francisco 37.728 (4) 7.1 360 .11 1 peak 

1295 Shafter St. 122.385 Up .05 

(USGS) 270 .07 

San Francisco State U. 37.724 (4) 8.8 270 .14 3.3 

Thornton Hall 122.475 Up .04 

(USGS) 180 .11 0.9 

San Francisco 37.79 (3) 8.5 

575 Market St. 122.40 

(USGS) 

Basement 135 .08 

Up .06 

045 .11 1 peak 

25 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Structure Array: 

0004:15.2 G.m.t. Ch. 1- 42nd Level, Northwest 045 .22 6.4 

Northern Calif. Ch. 2- 42nd Level, Center 225 .19 6.9 

37.036N, 121.883W Ch. 3- 42nd Level, Center 135 .14 2.3 

Magnitude 7.0 ML Ch. 4- 34th Level, Northwest 045 .15 6.9 

(Continued) Ch. 5- 34th Level, Center 225 .16 7.0 

Ch. 6- 34th Level, Center 135 .19 5.0 

Ch. 7- 25th Level, Northwest 045 .19 6.6 

Ch. 8- 25th Level, Center 225 .23 7.0 

Ch. 9- 25th Level, Center 135 .16 4.1 

Ch. 10- Ground Level 045 .12 1.4 

Ch. 11- Ground Level 315 .13 3.9 

San Francisco 37.80 (4) 8.7 

600 Montgomery St. 122.40 

(USGS) 

Basement 261 .12 0.9 

Up .05 

171 .11 1.2 

29th Floor 261 .15 4.5 

Up .11 2.1 

171 .17 5.1 

49th Floor 261 .31 6.4 

Up .14 5.8 

171 .29 11.2 

Structure Array: 

Ch. 1- 21st Floor, West Central 351 .20 7.1 

Ch. 2- 21st Floor, South Central 351 .17 3.0 

Ch. 3- 21st Floor, South Central 081 .22 11.8 

Ch. 4- 5th Floor, West Central 351 .27 7.2 

Ch. 5- 5th Floor, South Central 351 .28 7.1 

Ch. 6- 5th Floor, South Central 081 .24 4.6 

Ch. 7- SE Corner, Foundation Up .07 

Ch. 8- Ground Level, West Central 351 .17 3.1 

Ch. 9- Ground Level, Center 351 .15 3.1 

Ch. 10- Ground Level, Center 081 .18 2.6 

Ch. 11- Foundation, NW Corner 351 .10 1 peak 

Ch. 12- Foundation, West Side 351 .09 

Ch. 13- Foundation, SW Corner Up .05 

Emeryville 37.844 (3) 9.2 

6363 Christie Ave. 122.295 

(USGS) 

Ground Site South 350 .22 5.2 

Up .06 

260 .26 5.1 

26 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. oW) (s) (g) 

18 October 1989 Structure Array 1: 

0004:15.2 G.m.t. Ch. 1- Roof (31st), West Wing 350 .27 9.2 

Northern Calif. Ch. 2- Roof (31st), South Wing 050 .31 11.1 

37.036N, 121.883W Ch. 3- Roof (31st), North Wing 290 .39 19.8 

Magnitude 7.0 ML Ch. 4- Roof (31st), Central Core 350 .25 11.4 

(Continued) Ch. 5- Roof (31st), Central Core 260 .38 16.5 

Ch. 6- 21st Floor, Central Core 350 .20 4.9 

Ch. 7- 21st Floor, West Wing 350 .19 1.7 

Ch. 8- 21st Floor, South Wing 050 .18 3.7 

Ch. 9- 21st Floor, North Wing 290 .24 6.0 

Ch. 10- 13th Floor, Central Core 350 .27 5.4 

Ch. 11- 13th Floor, Central Core 260 .26 7.0 

Ch. 12- 21st Floor, Central Core 260 .23 5.9 

Structure Array 2: 

Ch. 1- 13th Floor, West Wing 350 .22 4.4 

Ch. 2- 13th Floor, South Wing 050 .23 4.8 

Ch. 3- 13th Floor, North Wing 290 .32 7.4 

Ch. 4- Ground Floor, West Wing Up .06 

Ch. 5- Ground Floor, South Wing Up .06 

Ch. 6- Ground Floor, Central Core Up .05 

Ch. 7- Ground Floor, North Wing 260 .22 1.9 

Ch. 8- Ground Floor, North Wing Up .05 

Ch. 9- Ground Floor, North Wing 350 .17 4.5 

Ch. 10- Ground Site, North 350 .20 1.7 

Ch. 11- Ground Site, North Up .09 

Ch. 12- Ground Site, North 260 .22 2.7 

Berkeley, U.C. 37.87 04:38.6 9.8 135 .04 

Strawberry Cyn. 122.24 Up .02 

(UCB) 045 .08 

Berkeley, U.C. 37.87 04:48.2 (2) 135 .03 

Haviland Hall 122.26 Up .02 

Basement (UCB) 045 .06 

Berkeley 37.87 

2168 Shattuck Ave. 122.27 

(USGS) 

Basement, East 04:38.3 6.9 261 .09 

Up .02 

171 .11 1 peak 

Basement, West 04:38.2 6.8 261 .10 1 peak 

Up .03 

171 .09 

27 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. oW) (s) (g) 

18 October 1989 Structure Array: 

0004:15.2 G.m.t. Ch. 1- 13th Floor, East Core 171 .13 1.1 

Northern Calif. Ch. 2- 13th Floor, East Core 261 .23 2.1 

37.036N, 121.883W Ch. 3- 13th Floor, Center 171 .13 2.0 

Magnitude 7.0 ML Ch. 4- 13th Floor, Roof West Core 171 .19 2.0 

(Continued) Ch. 5- 13th Floor, Roof West Core 081 .21 2.4 

Ch. 6- 13th Floor, Southwest 081 .23 2.6 

Ch. 7- 13th Floor, Southwest 171 .16 2.0 

Ch. 8-4th Floor, Southwest 171 .23 2.4 

Ch. 9- 4th Floor, Southwest 081 .11 0.2 

Ch. 10- 4th Floor, West Core 081 .08 

Ch. 11- 4th Floor, West Core 171 .11 1 peak 

Ch. 12- 4th Floor, East Core 171 .08 

San Francisco 37.783 (3) (2) 

VA Hospital 122.504 

(VA) 

Basement 185 .08 

Up .05 

095 .16 1.8 

7th Floor 185 .34 14.5 

Up .08 

095 .22 5.6 

San Francisco 37.806 (4) 8.5 360 .12 3.1 

Golden Gate Bridge 122.472 Up .06 

Abutment (USGS) 270 .24 2.9 

Richmond Bulk Mail 37.884 (4) 7.7 057 .08 

2501 Rydin Road 122.302 Up .04 

(USGS) 327 .11 0.3 

Martinez 37.993 (3) 8.9 020 .07 

VA Hospital 122.115 Up .03 

Basement (VA) 290 .05 

Larkspur 37.946 (4) 9.1 360 .10 2 peaks 

Ferry Terminal 122.508 Up .06 

(USGS) 270 .14 5.4 

28 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

18 October 1989 Anderson Darn 37.166 (4) (2) 

0007 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) SMA-1 

Epicenter and 

magnitude unknown Downstream 340 .03 

Up .02 

250 .05 

Structure Array: 

Ch. 1- Mid-dam, Center 153 .04 

Ch. 2- Mid-dam, Center 243 .04 

Ch. 3- Mid-dam, Right 063 .05 

Ch. 4-Toe 333 .03 

Ch. 5-Toe Up .03 

Ch. 6- Toe 063 .03 

Ch. 7- Right Crest 333 .04 

Ch. 8- Right Crest Up .04 

Ch. 9- Right Crest 063 .09 

Ch. 10- Center Crest 333 .06 

Ch. 11- Center Crest Up .04 

Ch. 12- Center Crest 063 .07 

Note: One additional record1 recovered at Anderson Dam Structure Array. 

Hollister 36.851 07:55.25 1.5 

City Hall Annex 121.402 

Basement (USGS) (1) 

Hollister Airport 36.888 07:54.5 1.1 (1) 

Differential Array 121.413 

(USGS) 

18 October 1989 Anderson Darn 37.166 (4) (2) 

0008 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

Epicenter and 

magnitude unknown Structure Array: 

Ch. 1-12 (1) 

18 October 1989 Anderson Dam 37.166 (4) (2) 

0041:24.7 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

37.198N, 122.105W 

Magnitude 5.1 ML Downstream (1) 

Structure Array: 

Ch. 1-12 (1) 

29 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. oW) (s) (g) 

18 October 1989 Milpitas 37.437 41.31.0 (2) (1) 

0041:24.7 G.m.t. Rivera St. 121.879 

Central Calif. (USGS) 

37.198N, 122.105W 

Magnitude 5.1 ML 

(Continued) 

18 October 1989 Anderson Dam 37.166 (4) (2) 

0323:57.0 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

37.163N, 121.995W 

Magnitude 4.0 ML Structure Array 

Ch. 1-12 (1) 

18 October 1989 Anderson Dam 37.166 (4) (2) 

0518:34.1 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

36.980N, 121.847W 

Magnitude 4.2 ML Structure Array: 

Ch. 1-12 (1) 

18 October 1989 Hollister 36.851 39:16.6 5.3 

0639:10.1 G.m.t. City Hall Annex 121.402 

Central Calif. Basement (USGS) (1) 

36.932N, 121.712W 

Magnitude 4.3 ML Hollister Airport 36.888 39:15.5 4.9 (1) 

Differential Array 121.413 

(USGS) 

18 October 1989- Anderson Dam 37.166 (3) (2) 

19 October 1989 Morgan Hill 121.628 

Central Calif. (USGS) 

Epicenters and 

magnitudes unknown Crest (1) 

Note: Five additional records1 recovered at Anderson Dam Crest. 

19 October 1989 Bear Valley Station 14 36.569 15:04.8 (2) (1) 

1014:35.1 G.m.t. Upper Butts Ranch 121.043 

Central Calif. (USGS) 

36.963N, 121.843W 

Magnitude 4.6 ML 

30 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

21 October 1989 Anderson Dam 37.166 15:05.5 0.3 

2214:57.0 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

37.057N, 121.905W 

Magnitude 4.9 ML Downstream (1) 

Crest 340 .03 

Up .03 

250 .06 

25 October 1989 Anderson Dam 37.166 27:34.1 (2) 

0127:26.6 G.m.t. Morgan Hill 121.628 

Central Calif. (USGS) 

37.078N, 121.832W 

Magnitude 5.0 ML Downstream (1) 

Crest (1) 

31 October 1989 SanJose,101/280/680 37.340 05:17.6 (2) (1) 

1905 G.m.t. Freeway Interchange 121.851 

Central Calif. (USGS) 

Epicenter and 

magnitude unknown 

3 November 1989 Bear Valley Station 6 36.504 04:50.7 (2) (1) 

1604:49.2 G.m.t. James Ranch 121.101 

Central Calif. (USGS) 

36.512N, 121.120W 

Magnitude 2.5 ML 

7November 1989 Cupertino 37.294 (4) (2) (1) 

2342:37.7 G.m.t. Pichetti Winery 122.089 

Central Calif. (USGS) Temporary 

37.227N, 122.037W 

Magnitude 4.3 ML Los Gatos, Los Altos 37.239 (4) 1.6 (1) 

Rod&GunOub 122.106 

(USGS) Temporary 

10 November 1989 SanJose,101/280/680 37.340 (4) (2) (1) 

1718 G.m.t. Freeway Interchange 121.851 

Central Calif. (USGS/COOT) 

Epicenter and 

magnitude unknown 

10November 1989 Cupertino 37.294 (4) (2) (1) 

2002 G.m.t. Pichetti Winery 122.089 

Central Calif. (USGS) Temporary 

Epicenter and 

magnitude unknown Los Gatos, Los Altos 37.239 (4) 1.6 (1) 

Rod&GunOub 122.106 

(USGS) Temporary 

3 1 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake 

18 October 1989-

16 November 1989 

Central Calif. 

Epicenters and 

magnitudes unknown 

19 November 1989 

0128 G.m.t. 

Central Calif. 

Epicenter and 

magnitude unknown 

20 November 1989 

1339G.m.t. 

Central Calif. 

Epicenter and 

magnitude unknown 

25 October 1989-

21 November 1989 

Central Calif.· 

Epicenters and 

Magnitudes unknown 

Station Name Coordinates Trigger S-minus Direction Maximum 

(Owner) (Lat. oN time trigger (az) amplitude 

Long. 0 W) (s) (g) 

Palo Alto 37.40 (3) (2) 

VA Hospital Bldg. 1 122.14 

(VA) 

Basement (1) 

Roof (7th level) (1) 

Note: Two additional records1 recovered at Palo Alto VA Hospital roof level. 

Bear Valley Station 10 

Webb Residence 

(USGS) 

SanJose,101/280/680 

Freeway Interchange 

(USGS/COOT) 

Anderson Dam 

Morgan Hill 

(USGS) 

Downstream 

Crest 

36.532 

121.143 

37.340 

121.851 

37.166 

121.628 

28:59.7 

(4) 

(3) 

1.5 

(2) 

(2) 

340 

Up 

250 

Note: One additional record1 recovered at Anderson Dam crest. 

Structure Array: 

Ch. 1- Mid-dam, Center 

Ch. 2- Mid-dam, Center 

Ch. 3- Mid-dam, Right 

Ch. 4-Toe 

Ch. 5-Toe 

Ch. 6-Toe 

Ch. 7- Right Crest 

Ch. 8- Right Crest 

Ch. 9- Right Crest 

Ch. 10- Center Crest 

Ch. 11- Center Crest 

Ch. 12- Center Crest 

153 

243 

063 

333 

Up 

063 

333 

Up 

063 

333 

Up 

063 

(1) 

(1) 

(1) 

.02 

.02 

.06 

.03 

.04 

.04 

.03 

.02 

.03 

.05 

.04 

.06 

.03 

.04 

.06 

Note: Three additional records1 recovered at Anderson Dam structure array. 

32 

Duration 

(s) 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

24 November 1989 Chalfant Valley Array 37.53 (4) 0.9 (1) 

1445:14.6 G.m.t. Fire Station 118.37 

Eastern Calif. (USGS) 

37.402N, 118.630W 

Magnitude 3.9 ML 

29 November 1989 McGee Creek 37.550 (4) (2) (1) 

1645:13.8 G.m.t. Mammoth Lakes 118.811 

Eastern Calif. (USGS) SMA-1 

37 520N, 118.768W 

Magnitude 3.0 ML McGee Creek 37.550 (4) (2) 

Mammoth Lakes 118.811 

(USGS) CRA-1 

166m Downhole (1) 

35 m Downhole (1) 

Surface (1) 

1 mDownhole (1) 

21 October 1988- Los Angeles 34.071 (3) 

1 December 1989 444 S. San Vicente Blvd. 118.374 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (12th) (2) (1) 

Note: Three additional records1 recovered at 444 S. San Vicente Boulevard roof. 

5 December 1988- Los Angeles 34.098 (3) 

1 December 1989 1526N. Edgemont St. 118.294 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (8th) 2.9 090 .08 

Up .05 

360 .13 1 peak 

2.9 090 .15 0.2 

Up .04 

360 .09 

13 December 1988- Long Valley Dam 37.588N (3) (2) 

1 December 1989 Crowley Lake 118.705W 

Eastern Calif. (USGS) 

Epicenter and 

magnitude unknown Left abutment (1) 

33 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

14 December 1988- Los Angeles 34.106N (3) 

1 December 1989 2005 N. Highland Ave. 118.336W 

Southern Calif. (OWNR) 

' Epicenters and 

magnitudes unknown Roof (8th) (1) 

Note: One additional record1 recovered at 2005 N. Highland Avenue roof. 

2 December 1989 Anza Array 33.616 (3) 2.0 010 .05 

2316:47.8 G.m.t. Garner Valley 116.627 Up .05 

Southern Calif. Fire Station (USGS) 280 .04 

33.650N, 116.740W 

Magnitude 4.2 ML Anza Array 33.676 16:50.6 1.7 135 .07 

Hurkey Creek Park 116.680 Up .07 

(USGS) 045 .08 

Anza Array 33.714 (3) 1.8 180 .16 0.2 

Keenwild Forest Sta. 116.711 Up .19 0.1 

(USGS) 090 .18 0.2 

Anza Array 33.61 (3) 3.2 (1) 

Pinyon Flat Observ. 116.46 

(USGS) 

Anza Array 33.630 16:53.2 (2) 360 .08 

Red Mountain 116.847 Up .02 

(USGS) 270 .06 

Anza Array 33.60 (3) 1.7 360 .07 

Tripp Flats 116.74 Up .03 

(USGS) 270 .04 

Anza Array 33.578 16:51.5 2.6 360 .05 

Pine Meadow Ranch 116.589 Up .03 

(USGS) 270 .05 

17 August 1988- Los Angeles 34.058 (3) 

4 December 1989 2049 Century Park E. 118.412 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown 43rd floor 4.9 320 .05 

Up .07 

230 .03 

34 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus Direction Maximum Duration 

(Owner) (Lat. oN time trigger (az) amplitude (s) 

Long. 0 W) (s) (g) 

17 August 1988- Los Angeles 34.059 (3) 

4 December 1989 2029 Century Park E. 118.413 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown 43rd floor 4.8 320 .06 

(Continued) Up .09 

230 .02 

30 July 1987- Los Angeles 33.855 (3) 

5 December 1989 19191 S. Vermont Ave. 118.291 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown lOth fldor 4.3 360 .09 

Up .09 

270 .07 

10.8 360 .06 

Up .03 

270 .07 

Note: Six additional records1 recovered at 19191 S. Vermont Avenue lOth floor. 

3 August 1988- Los Angeles 33.945 (3) 

6 December 1989 5250 Century Blvd. 118.372 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown Roof (8th) 2.8 090 .02 

Up .08 

360 .03 

Note: Four additional records1 recovered at 5250 Century Boulevard roof. 

21 October 1988- Los Angeles 34.053 (3) 

6 December 1989 333 S. Hope St. 118.252 

Southern Calif. (OWNR) 

Epicenters and 

magnitudes unknown 55th floor 3.0 353 .03 

Up .10 1 peak 

083 .05 

2.8 353 .01 

Up .07 

083 .02 

Note: Two additional records1 recovered at 333 S. Hope Street 55th floor. 

35 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake 

7 July 1988-

12 December 1989 

Southern Calif. 

Epicenters and 

magnitudes unknown 

17 August 1988-

12 December 1989 

Southern Calif. 

Epicenters and 

magnitudes unknown 

16 September 1988-

13 December 1989 

Southern Calif. 

Epicenters and 

magnitudes unknown 

22 December 1989 

0303:25.5 G.m.t. 

Southern Calif. 

33.620N, 116.690W 

Magnitude 3.4 ML 

Station Name 

(Owner) 

Los Angeles 

4929 Wilshire Blvd. 

(OWNR) 

Roof (11th) 

Coordinates Trigger 

(Lat. o N time 

Long. oW) 

34.063 

118.337 

(3) 

S-minus Direction 

trigger (az) 

(s) 

3.6 180 

Up 

090 

3.0 180 

Up 

090 

3.1 180 

Up 

090 

Maximum 

amplitude 

(g) 

.11 

.08 

.07 

.06 

.08 

.06 

.07 

.10 

.05 

Note: Two additional records1 recovered at 4929 Wilshire Boulevard roof. 

Los Angeles 

10100 Santa Monica Blvd. 

(OWNR) 

Roof (27th) 

34.061 

118.416 

(3) 

4.3 140 

Up 

050 

.08 

.08 

.02 

Note: One additional record1 recovered at 10100 Santa Monica Boulevard roof. 

Los Angeles 34.063 

600 S. Commonwealth Ave. 118.285 

(OWNR) 

19th floor 

(3) 

3.5 

3.3 

028 .06 

Up .12 

298 .07 

028 .04 

Up .07 

298 .03 

Duration 

(s) 

1.5 

1 peak 

1 peak 

Note: Two additional records1 recovered at 600 S. Commonwealth Avenue 19th floor. 

Anza Array 

Garner Valley 

Fire Station (USGS) 

33.616 

166.627 

36 

(3) 1.8 ((1) 
Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1989-Continued 

Earthquake Station Name Coordinates Trigger S-minus 

(Owner) (Lat. oN time trigger 

Long. 0 W) (s) 

24 December 1989 Howard Hanson Dam 47.282 (3) (2) 

0845:58.9 G.m.t. (ACOE) 121.791 

Washington 

46.650N, 122.116W Crest 

Magnitude 5.1 ML 

28 December 1989 Kealakekua, Hawaii 19.523 (4) (2) 

0913:17.3 G.m.t. Kona Hospital 155.879 

Hawaii (USGS) 

19.333N, 155.212W 

Magnitude 5.0 ML Mauna Loa, Hawaii 19.539 (4) (2) 

Observatory 155.580 

(USGS) 

28 December 1989 Lorna Linda 34.050 (3) (2) 

0941:08.1 G.m.t. Medical Center 117.263 

Southern Calif. (USGS) 

34.190N, 117.390W 

Magnitude 4.5 ML San Bernardino Array 34.086 (3) 3.1 

San Bernardino 117.309 

Valley College (USGS) 

San Bernardino County 34.106 41:12.0 2.6 

Government Center 117.287 

(USGS) 

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

2 Questionable or indeterminable. 

Direction Maximum 

(az) amplitude 

(g) 

050 .02 

Up .02 

320 .08 

(1) 

(1) 

(1) 

(1) 

(1) 

3 WWVB time code illegible, or instrument not equipped with a radio receiver; 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. 

37 

Duration 

(s) 

SELECTED SERIES OF U.S. GEOLOGICAL SURVEY PUBLICATIONS 

Periodicals 

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Technical Books and Repons 

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bases at various scales; they show results of surveys using geophysical 

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in relation to specific mining or mineral-deposit problems; post-1971 

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of geohydrologic data of both regular and irregular areas; principal scale 

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Permanent catalogs, as well as some others, giving comprehensive listings of U.S. Geological Survey publications are available under 

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