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CONTENTS

v

Compiled by josephine C. Switzer and Ronald L. Porcella

2 January 1990 0950:53.1 G.m.t. Southern Calif. 33.650N, 116.770W Magnitude 3.4 ML

15 January 1990 0529:03.4 G.m.t. Eastern Calif. 37.988N, 118.210W Magnitude 5.0 ML

16 January 1990 2008:22.0 G.m. t. Northern Calif. 40.232N, 124.138W Magnitude 5.3 ML

30January 1990 0507:18.6 G.m.t. Central Calif. 36.543N, 121.177W Magnitude 2.8 ML

18 February 1990 1552:59.9 G.m.t. Southern Calif. 33.510N, 116.450W Magnitude 4.1 ML Anza Array Garner Valley Fire Station 116.627 (USGS)

Montgomery Pass Nevada (USGS)

Eel River Valley Array Ferndale Fire Station (USGS)

Eel River Valley Array Fortuna Fire Station (USGS)

Bear Valley Station 5 Callens Ranch (USGS)

Bear Valley Station 1 CDF Fire Station (USGS)

Bear Valley Station 10 Webb Residence (USGS)

Anza Array Gamer Valley Fire Station 116.627 (USGS)

Anza Array Pine Meadow Ranch (USGS)

Up .29 .16 .29

.03 .04 .06 1.1 1.2 1.6 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

18 February 1990 1552:59.9 G.m.t. Southern Calif. 33.510N, 116.450W Magnitude 4.1 ML (Continued)

26 February 1990 Approx. 2100 G.m.t. Eastern Calif. Epicenter and magnitude unknown

20 June 1989- 28 February 1990 Southern Calif. Epicenter and magnitude unknown

12 January 1990- 28 February 1990 Southern Calif. Epicenter and magnitude unknown

28 February 1990 1307:00.8 G.m.t. Eastern Calif. 37.560N, 118.455W Magnitude 3.1 ML

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML (Upland earthquake) Anza Array Pinyon Flat Observatory (USGS)

Anza Array Rarick Springs (USGS)

Note: One additional record1 recovered at Rarick Springs.

Anza Array TuleCanyon (USGS)

Chalfant Valley Fire Station (USGS)

Live Oak Reservoir LaVerne (MWD)

San Antonio Dam Upland (ACOE)

Chalfant Valley Fire Station (USGS)

San Antonio Dam Upland (ACOE)

Up (1)

1 peak .10 .05 .13

4.9 4.9 8.0 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML (Continued) Station Name Coordinates Trigger S-minus Direction Maximum Duration (Owner)

Live Oak Reservoir LaVerne (MWD)

Structure Array:

Ch. 1- Center Crest Ch. 2- Center Crest Ch. 3- Center Crest Ch. 4- Left Crest Ch. 5- Left Crest Ch. 6- Left Slope Ch. 7- Center Slope Ch. 8- Center Slope Ch. 9- Center Slope Ch. 10- Center Toe Ch. 11- Center Toe Ch. 12- Center Toe

Weymouth Filter Plant LaVerne (MWD)

Note: Peak motions listed for top of Water Tank are approx.; record contains extremely highfrequency accelerations that are not fully discernible . time trigger (s) Long. oW)

Up 1.05 (g)

.83 .87 (s)

8.8 14.7 10.3 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML Morris Dam (MWD)

Lytle Creek Mann Residence (USGS)

Note: One additional record

Sycamore Forest Station (USGS)

Orange County Reservoir (MWD)

Diemer Filter Plant Yorba Linda (MWD)

Carbon Canyon Dam Brea (ACOE)

Left Abutment 34.173 117.879

recovered at Lytle Creek.

Up .05 .04 .08

.06 .05 .05 1 peak

0.2 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML Prado Dam Corona (ACOE)

San Bernardino Array Devore Water Department 117.407 (USGS)

Note: One additional record

Paradise Springs Camp (USGS)

Riverside Santa Ana River Bridge (MWD/USGS)

North Abutment Recorder Building

Structure Array:

Ch. 1- North Abutment Ch. 2- North Abutment Ch. 3- North Abutment Ch. 4- Mid Span Ch. 5- Mid Span Ch. 6- Mid Span Ch. 7- Below Isolator Bearing Ch. 8- Below Isolator Bearing Ch. 9- Below Isolator Bearing Ch. 10- Above Isolator Bearing Ch. 11- Above Isolator Bearing Ch. 12- Above Isolator Bearing 33.890 117.641

recovered at Devore Water Department.

Down .08 .06 .07

.20 .11 2 peaks .11

0.9 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML San Bernardino Array Rialto Fire Station (USGS)

Note: One additional record

Whittier Narrows Dam Pico Rivera (ACOE)

Brea Dam Fullerton (ACOE)

Note: One additional record recovered at Brea Dam Crest.

Whittier 7215 Bright Ave. (USGS)

Valyermo Forest Station Ground Level (USGS)

recovered at Rialto Fire Station.

Up .07 .05 .06

.07 .04 .06 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML San Bernardino Array S.B. Valley College (USGS)

Colton Interchange 1-10/215 (CDOT)

San Bernardino Array 'F' Street (USGS)

San Bernardino County Government Center (USGS)

Structure Array:

Ch. 1- 2nd Floor Level, NW Ch. 2- 2nd Floor Level, NE Ch. 3- 2nd Floor Level, NE Ch. 4- 2nd Floor Level, SW Ch. 5-4th Floor Level, SW Ch. 6-4th Floor Level, NW Ch. 7-6th Floor Level, (Roof) NE Ch. 8- 6th Floor Level, (Roof) NW Ch. 9- 6th Floor Level, (Roof) SW Ch. 10- 6th Floor Level, (Roof) NE Ch. 11- 4th Floor Level, NE Ch. 12- 4th Floor Level, NE

Lake Mathews Dike Toe (MWD)

Up .05 .05 .05

.06 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML Garvey Reservoir Monterey Park (MWD)

Abutment Bldg.

Pasadena, CIT 525 S. Wilson Ave. (USGS)

Norwalk 12400 Imperial Highway (USGS/BECH)

Norwalk 12440 Imperial Highway (USGS/BECH)

Structure Array 1:

Ch. 1-9th Level (Roof), Bldg. Center Ch. 2-6th Level, Bldg. Center Ch. 3- 3rd Level, Bldg. Center Ch. 4- 2nd Level, Bldg. Center Ch. 5- 1st Level (Basement), East End Ch. 6-6th Level, Bldg. West-Center Ch. 7- 1st Level (Basement), Bldg. Center Ch. 8- 1st Level (Basement), Bldg. Center Ch. 9- 1st level (Basement), Bldg. Center Ch. 10- Downhole (30'), Bldg. Center Ch. 11- Downhole (30'), Bldg. Center Ch. 12- Downhole (30'), Bldg. Center 34.050 118.114

Up .05 .02 .03

.05 .02 .02 .02 .03 .04 .01 .02 .03 .01 .01 .03 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML Structure Array 2:

Ch. 13- 9th Level (Roof), East End Ch. 14- 6th Level, East End Ch. 15- 3rd Level, East End Ch. 16- 2nd Level, East End Ch. 17- 9th Level (Roof), Bldg. Center Ch. 18- 6th Level, Bldg. Center Ch. 19- 3rd Level, Bldg. Center Ch. 20- 2nd Level, Bldg. Center Ch. 21- 9th Level (Roof), West End Ch. 22- 6th Level, West End Ch. 23- 3rd Level, West End Ch. 24- 2nd Level, West End

Lorna Linda Medical Center 34.050 Basement (USGS)

Alhambra 900 S. Fremont Ave. (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

Lorna Linda VA Hospital (VA/USGS)

Building 1 Structure Array:

Ch. 1- Ground Floor, Center Ch. 2- Ground Floor, Center Ch. 3- Ground Froor, 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 117.263

.02 .04 .06 .15 .07 .11 1 peak .12

0.2 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML North Ground Site

Alhambra Norwich Ave. (USGS)

Mills Filter Plant (MWD)

Los Angeles Bulk Mail Center (USGS)

Santa Ana, Orange County Engineering Bldg., Basement (USGS)

Reche Canyon Olive Dell Ranch (USGS)

Littlerock Post Office (USGS)

Orange County John Wayne Airport (USGS)

Los Angeles Griffith Park Observatory 118.299 (USGS)

Long Beach VA Hospital (VA)

11th Floor 34.084 118.159

.09 .02 1 peak .10

.04 .03 .07 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML San Joaquin Reservoir (MWD)

Newport Beach 840 Newport Center Dr. (USGS)

Structure Array:

Ch. 1- Tower 2, Level 1, Center Ch. 2- Tower 2, Level 1, Center Ch. 3- Tower 2, Level 1, Center Ch. 4- Tower 2- Level 2, West Ch. 5- Tower 2:- Level 2, Center Ch. 6- Tower 2, Level 2, Center Ch. 7- Tower 2, Level 9, South Ch. 8- Tower 2, Level 10, Center Ch. 9- Tower 2, Level 10, Center Ch. 10- Tower 1, Level 9, East Ch. 11- Tower 1, Level 10, Center Ch. 12- Tower 1, Level 10, Center

Palos Verdes Reservoir (MWD)

Sepulveda VA Hospital (VA)

Jensen Filter Plant Balboa Park (MWD)

Administration Bldg.

Leona Valley Fire Station (USGS)

34.62 118.29 .05 .02 .03 Inoperative .07 .07 .02 Inoperative Inoperative .02 .05 .04 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990 2343:36.6 G.m.t. Southern Calif. 34.140N, 117.700W Magnitude 5.2 ML (Continued)

28 February 1990- 1 March 1990 Southern Calif. Epicenters and magnitudes unknown (aftershock)

28 February 199Q-2 March 1990 Southern Calif. Epicenters and magnitudes unknown (aftershocks) Anza Array Red Mountain (USGS)

Weymouth Filter Plant LaVerne (MWD)

Note: Two additional records recovered at Weymouth Filter Plant Bldg., ground level.

Live Oak Reservoir LaVerne (MWD)

Note: Four additional records

Structure Array:

Ch. 1- Center Crest Ch. 2- Center Crest Ch. 3- Center Crest Ch. 4- Left Crest Ch. 5- Left Crest Ch. 6- Left Slope Ch. 7- Center Slope Ch. 8- Center Slope Ch. 9- Center Slope Ch. 10- Center Toe Ch. 11- Center Toe Ch. 12- Center Toe 44:06.7 33.630 116.847

recovered at Live Oak Reservoir Abutment. 1.2

Up .07 .03 .06

.05 .03 .03 .06 .03 .03 .04 .01 .03 .04 .02 .02 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990- 2 March 1990 Southern Calif. Epicenters and magnitudes unknown (aftershocks continued)

Structure Array:

Ch. 1- Center Crest Ch. 2- Center Crest Ch. 3- Center Crest Ch. 4- Left Crest Ch. 5- Left Crest Ch. 6- Left Slope Ch. 7- Center Slope Ch. 8- Center Slope Ch. 9- Center Slope Ch. 10- Center Toe Ch. 11- Center Toe Ch. 12- Center Toe

Structure Array:

Ch. 1- Center Crest Ch. 2- Center Crest Ch. 3- Center Crest Ch. 4- Left Crest Ch. 5- Left Crest Ch. 6- Left Slope Ch. 7- Center Slope Ch. 8- Center Slope Ch. 9- Center Slope Ch. 10- Center Toe Ch. 11- Center Toe Ch. 12- Center Toe

Note: One additional record

San Antonio Dam Upland (ACOE)

Crest recovered at Live Oak Reservoir Structure Array.

Up .09 .05 .07 .09 .07

.05 .03 .09 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990- 2 March 1990 Southern Calif. Epicenters and magnitudes unknown

(aftershocks continued) Crest (Continued)

Note: Five additional records recovered at San Antonio Dam Crest.

Note: Fourteen additional records recovered at San Antonio Dam Right Abutment.

Up .07 .06 .12 2 peaks

.04 .04 .11 1 peak

0.4 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

28 February 1990- 2 M(!rch 1990 Southern Calif. Epicenters and magnitudes unknown (aftershocks continued)

8 November 1989- 8 March 1990 Southern Calif. Epicenter and magnitude unknown

26 March 1990 1228:47.2 G.m.t. Central Calif. 36.568N, 121.198W Magnitude 2.8 ML

9 April 1990 Approx. 1600 G.m.t. Eastern Calif. Epicenter and magnitude unknown

11 April 1990 Approx. 1200 G.m.t. Eastern Calif. Epicenter and magnitude unknown

2 March 1990- 17 April 1990 Southern Calif. Epicenters and magnitudes unknown Downstream (Continued)

Note: Eleven additional records recovered at San Antonio Dam Downstream.

Skinner Dam (MWD)

Bear Valley Station 10 Webb Residence (USGS)

Chalfant Valley Fire Station (USGS)

Chalfant Valley Fire Station (USGS)

San Antonio Dam Upland (ACOE)

Up .19 .07 .18

0.6 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

2 March 1990- 17 April1990 Southern Calif. Epicenters and magnitudes unknown (Continued)

17 April 1990 2232:27.2 G.m.t. Southern Calif. 34.110N, 117.720W Magnitude 4.6 ML (aftershock)

Crest (Continued)

Note: Four additional records recovered at San Antonio Dam Crest.

Note: Eight additional records recovered at San Antonio Dam Right Abutment.

Note: Five additional records recovered at San Antonio Dam Downstream.

Carbon Canyon Dam Brea (ACOE)

Diemer Filter Plant Yorba Linda (MWD)

Live Oak Reservoir LaVerne (MWD)

Up .05 .04 .08

.02 .19 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

17 April 1990 2232:27.2 G.m.t. Southern Calif. 34.110N, 117.720W Magnitude 4.6 ML

(aftershock continued)

18 April 1990 1353:51.4 G.m.t. Central Calif. 36.917N, 121.675W Magnitude 5.4 ML San Antonio Dam Upland (ACOE)

Weymouth Filter Plant LaVerne (MWD)

Hollister City Hall Annex Basement (USGS)

Hollister Airport Differential Array (USGS)

Anderson Dam Morgan Hill (USGS)

Up .33 .19 .36

0.6 1 peak 0.3

0.7 2.3 2.4 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

18 April 1990- 20 April 1990 Southern Calif. Epicenter and magnitude unknown

22 April 1990 1402:04.4 G.m.t. Central Calif. 36.575N, 121.218W Magnitude 3.1 ML

20 October 1989- 25 April 1990 Central Calif. Epicenter and magnitude unknown

28 April 1990 0441:48.0 G.m.t. Central Calif. 37.885N, 121.983W Magnitude 4.6 ML

28 April1990 0447:41.8 G.m.t. Central Calif. 37.863N, 122.003W Magnitude 3.9 ML

28 April1990 0545:04.2 G.m.t. Central Calif. 37.870N, 122.018W Magnitude 3.4 ML San Antonio Dam Upland (ACOE)

Bear Valley Station 10 Webb Residence (USGS)

Calaveras Array Pleasant Hill Contra Costa Fire Station #2 (USGS)

Calaveras Array Danville Fire Station (USGS)

Calaveras Array Pleasant Hill Contra Costa Fire Station #2 (USGS)

Calaveras Array Danville Fire Station (USGS)

Calaveras Array Danville Fire Station (USGS)

37.810 121.992 1.2 Up

.05 .03 .06 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

21 May 1990 1049:16.7 G.m.t. Eastern Calif. 37.500N, 118.420W Magnitude 3.6 ML

10 January 1989- 31 May 1990 Southern Calif. Epicenters and magnitudes unknown

26 August 1985- 31 May 1990 Southern Calif. Epicenters and magnitudes unknown

17June 1990 Approx. 1600 G.m.t. Hawaii Epicenter and magnitude unknown

18 November 1989- 26June 1990 Central Calif. Epicenters and magnitudes unknown Chalfant Valley Fire Station (USGS)

Chalfant Valley Laws, Calif. (USGS)

Los Angeles 2055 Avenue of the Stars (OWNR)

Roof (31)

Note: Five additional records recovered at 2055 Avenue of the Stars Roof.

Los Angeles 11645 Wilshire Blvd. (OWNR)

Kealakekua Kona Hospital (USGS)

Palo Alto VA Hospital, Bldg. 1 (VA)

Roof (7th)

Note: One each additional record recovered at Palo Alto VA Hospital Basement and Roof.

Up .05 .04 .06

1 peak .11 .04 1.2 .14

.08 .03 .07 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

2 August 1990 0537:22.6 G.m.t. Hawaii 19.843N, 155.617W Magnitude 4.7 ML

5 August 1990 2127:03.7 G.m.t. Southern Calif. 33.320N, 116.410W Magnitude 3.6 ML

20 June 1988- 8 August 1989 Southern Calif. Epicenters and magnitudes unknown

9 August 1990 0206:36.1 G.m.t. Hawaii l9.340N, 155.114W Magnitude 5.0 ML Kealakekua, Hawaii Kona Hospital (USGS)

Laupahoehoe, Hawaii Post Office (USGS)

Kohala, Hawaii Police Station (USGS)

Mauna Kea, Hawaii U.K. Summit Observatory (USGS)

Waimea, Hawaii Fire Station (USGS)

Anza Array Rancho de Anza (USGS)

Los Angeles 6101 W. Century Blvd. 15th floor (OWNR)

Note: Two additional records recovered at 6101 W. Century Boulevard .

Los Angeles 10660 Wilshire Blvd. 19th floor (OWNR)

Note: Four additional records recovered at 10660 Wilshire Boulevard.

Hilo, Hawaii U.S.D.A. Laboratory (USGS)

Up .05 .02 .05

.10 1 peak .11 .23 1.6 1.9 2.6

0.1 .07 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

20 August 1990 1410:47.8 G.m.t. Eastern Calif. 37.492N, 118.842W Magnitude 2.6 Ml

22 August 1990 2124:06.0 G.m.t. Central Calif. 37.202N, 122.075W Magnitude 3.7 ML

28 August 1990 1824:02.3 G.m.t. Eastern Calif. 37.523N, 118.893W Magnitude 3.2 ML

1 September 1990 Approx. 2000 G.m.t. Hawaii Epicenter and magnitude unknown

7 September 1990 2329:26.1 G.m.t. Central Calif. 36.563N, 121.190W Magnitude 2.5 ML Station Name (Owner)

McGee Creek Mammoth Lakes (USGS) (Triaxial)

McGee Creek Mammoth Lakes (USGS) (Multi-channel)

Los Gatos Los Altos Rod & Gun Club (USGS)

McGee Creek Mammoth Lakes (USGS) (Triaxial)

McGee Creek Mammoth Lakes (USGS) (Multi-channel)

Waimea, Hawaii Fire Station (USGS)

Bear Valley Station 10 Webb Residence (USGS) Coordinates Trigger S-minus Direction Maximum Duration (lat. oN time Long. oW)

29:27.4 36.532 121.143 (s) amplitude trigger (g) (s)

1.1 Table 1. National Cooperative Strong-:-Motion Network Accelerograph Records Recovered During 1990-Continued

23 September 1990 1335:47.6 G.m.t. Central Calif. 37.395N, 122.163W Magnitude 3.3 ML

26 September 1990 0253:55.8 G.m.t. Central Calif. 37.380N, 122.182W Magnitude 3.6 ML

24 October 1990 0615:20.7 G.m.t. Eastern Calif. 38.047N, 119.157W Magnitude 5.7 ML

20 April 1990- 15 November 1990 Southern Calif. Epicenter and magnitude unknown

9 September 1989- 10 December 1990 Southern Calif. Epicenter and magnitude unknown Calexico Fire Station Station Name Coordinates Trigger S-minus Direction Maximum Duration (Owner)

Stanford University SLAC Test Lab (USGS)

Stanford University SLAC Test Lab (USGS)

Buchanan Dam (ACOE)

Hidden Dam (ACOE)

San Antonio Dam (ACOE)

El Centro Differential Array (USGS)

(USGS) (Lat. oN Long. W)

32.669 115.492 time trigger (s)

2.6 (s)

.06 .02 .03 Table 1. National Cooperative Strong-Motion Network Accelerograph Records Recovered During 1990-Continued

23 May 1990- 12 December 1990 Southern Calif. Epicenters and magnitudes unknown

Less than 0.05 g at ground-level or less than 0.10 g at non-ground-level stations. 2 Questionable or indeterminable.

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. Contains internal clock for event correlation only (accuracy is widely variable). 1.3 Salton Sea Wildlife Refuge 33.178 (USGS) SMA-1 115.615

Note: Three additional records recovered at Salton Sea Wildlife Refuge SMA-1.

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Spinner Logo
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