Whittier Narrows Table 3: Station histories

Lat = 34°04.83', Long = -118°11.25', Elev = 203 m

Acosta residence, 4407 Jasper St., Los Angeles.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
276 0030 - 276 1820	24	27	06dB	UP,000,090	303	18dB	UP,000,090	A
276 1820 - 280 1800	"	"	"	"	"	24dB	"	B-D
280 1800 - 287 1635	"	"	"	"	"	36dB	"	E-F

ARC

Lat = 34°07.78', Long = -118°02.18', Elev = 131 m

Arcadia High School, 180 Campus Dr., Arcadia.

One-story 8m × 8m storage room.

Co-sited with USC smr #93.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
278 2250 - 280 1955	6	54	06dB	UP,000,090	200	24dB	UP,000,090	A-B
280 1955 - 296 1545	"	"	"	"	"	30dB	"	C-E

BEC

Lat = 33°55.01', Long = -118°04.15', Elev = 32 m

Bechtel Building, Norwalk (see Figure A1).

Standard USGS free-field accelerograph pad (poorly coupled to ground?).

Co-sited with USGS smr #634 - smr not installed.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 2330 - 277 1755	20	56	06dB	UP,000,090	189	18dB	UP,000,090	A-B

BEL

Lat = 33°57.89', Long = -118°09.49', Elev = 32 m

Grant Ward Latter Day Saints Church, 7420 Jaboneria St., Bell Gardens.

One-story brick building; closet near kitchen.

Co-sited with USC smr #94.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
287 1750 - 290 2000	42	32	06dB	UP,000,090	162	30dB	UP,000,090	A-B

BNE

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library basement - northeast site, Caltech, Pasadena (see Figure A3).

Co-sited with USGS smr #?

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
287 2250 - 297 1640	20	56	06dB	UP,000,090	189	36dB	UP,000,090	A-B
297 1640 - 297 1730	"	-	-	-	"	60dB	"	B*
297 1730 - 313 2105	"	56	06dB	UP,000,090	"	36dB	"	C-D

*400 sps/channel

BNW

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library basement - northwest site, Caltech, Pasadena (see Figure A3).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
287 2230 - 297 1630	26	11	06dB	UP,000,090	184	36dB	UP,000,090	A-B
297 1650 - 297 1705	"	-	-	-	"	60dB	"	C*
297 1730 - 299 1700?	"	11	06dB	UP,000,090	"	36dB	"	D
300 2225 - 303 2200	"	-	-	-	"	"	"	E
303 2200 - 313 2100	"	11	06dB	UP,000,090	"	"	"	"

*400 sps/channel

299 1700? Instrument was removed by Millikan Library personnel - exact time-off is unknown.

BSE

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library basement - southeast site, Caltech, Pasadena (see Figure A3).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
287 2245 - 304 1445?	22	24	06dB	UP,000,090	305	36dB	UP,000,090	A-C

304 1445? Time of last trigger - exact time-off is unknown.

BWY

Lat = 33°59.21', Long = -118°02.53', Elev = 102 m

Castor residence. 12431 E. Broadway, Whittier.

3m × 3m concrete pad abutting one-story wood-frame garage.

Heavily damaged residential area.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
296 2030 - 313 1700	42	57	06dB	UP,000,090	197	36dB	UP,000,090	A-C

ECP

Lat = 34°10.63', Long = -118°05.77', Elev = 296 m

Eaton Canyon Park, Altadena.

One-story wood-frame park headquarters building; storage room.

Co-sited with CDMG smr #24402.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
278 2345 - 280 1900	15	21	06dB	UP,000,090	190	24dB	UP,000,090	A-B
280 1900 - 297 2045	"	"	"	"	"	36dB	"	C-F

ELM

Lat = 34°05.57', Long = -118°01.12', Elev = 97 m

El Monte Latter Day Saints Church, 11338 Fairview Ave., El Monte.

One-story wing of two-story stucco building; broom closet off Children's Chapel.

Co-sited with USC smr #66.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 2200 - 279 1705	13	09	06dB	UP,000,090	157	18dB	UP,014,104	A-C
279 1705 - 280 1820	"	"	"	"	"	24dB	"	D
280 1820 - 283 1755	"	"	"	"	"	30dB	"	E-F
283 1755 - 288 1540?	"	"	"	"	"	36dB	"	G-J

288 1540? Time of last trigger - exact time-off is unknown.

GAR

Lat = 34°02.92', Long = -118°06.66', Elev = 159 m

Garvey Reservoir, Monterey Park.

One-story concrete-block pump building.

Co-sited with USGS smr #709.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 1530 - 279 1745	26	52	06dB	UP,000,090	311	18dB	UP,000,090	A-C
279 1755 - 280 1655	"	"	"	"	"	24dB	"	D
280 1655 - 281 1600	"	"	"	"	"	30dB	"	E
281 1600 - 287 1730	"	"	"	"	"	36dB	"	E-F

HCH

Lat = 33°59.39', Long = -117°56.56', Elev = 159 m

First Ward Latter Day Saints Church, 16750 Colima Rd., Hacienda Heights.

One-story brick building; broom closet near center.

Co-sited with USC smr #73.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
288 1805 - 310 2315	13	09	06dB	UP,000,090	157	36dB	UP,000,090	A-D

HOO

Lat = 33°59.08', Long = -118°01.73', Elev = 140 m

Hoover School, 6302 S. Alta Dr., Whittier.

Old one-story stone building; storage room SE corner of the north building.

Co-sited with USC smr #75.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 1900 - 278 1655	22	29	06dB	UP,000,090	160	18dB	UP,000,090	A
278 1655 - 281 1530	"	"	"	"	"	24dB	"	B-C
281 1530 - 287 1815	"	"	"	"	"	36dB	"	C-D
296 1745 - 313 1745	06	55	"	"	154	"	"	E-F

KIN

Lat = 34°10.87', Long = -118°04.84', Elev = 441 m

Griffith residence, Kinneloa Ranch, 2254 N. Villa Rd, Pasadena.

Buried in ground 1-3 m behind one-story house.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
276 1915 - 278 2300	15	21	06dB	UP,000,090	190	24dB	UP,014,104	A-B

LAC

Lat = 33°55.44', Long = -118°10.02', Elev = 27 m

L. A. County Roads Department, Downey.

Concrete pad; storeroom in tall metal warehouse (noisy site).

Co-sited with CDMG smr #14368.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
296 2250 - 313 1600	07	-	-	-	302	30,36,36dB	UP,000,090?	A-D

Seismometer rotated 45 degrees clockwise?

LIN

Lat = 34°05.49', Long = -118°05.56', Elev = 114 m

Lincoln School, 600 E. Grand Ave., San Gabriel.

Concrete floor; basement of two-story building.

Co-sited with USC smr #19.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 2040 - 278 1900	43	55	06dB	UP,000,090	154	18dB	UP,000,090	A

LTB

Lat = 33°58.57', Long = -118°02.13', Elev = 93 m

Whittier Lutheran Towers basement, 7215 Bright Ave., Whittier (see Figure A2).

Ten-story building.

Co-sited with USGS smr #804.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
296 1840 - 313 1740	43	54	06dB	UP,000,090	200	36dB	UP,000,090	A-B

LTH

Lat = 33°58.55', Long = -118°02.13', Elev = 93 m

Whittier Lutheran Towers free-field, 7215 Bright Ave., Whittier (see Figure A2).

Concrete floor; parking garage (64 m south of LTB).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
296 1900 - 313 1725	40	32	06dB	UP,000,090	162	36dB	UP,000,090	A-D

MIL

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library basement - northeast site, Caltech, Pasadena (see Figure A3).

Co-sited with USGS smr #?

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
277 2330 - 280 1905	20	56	06dB	UP,000,090	189	24dB	UP,000,090	A-B
280 1905 - 287 2240	"	"	"	"	"	36dB	"	C-D

MOT

Lat = 33°59.19', Long = -118°03.53', Elev = 57 m

Thrifty Luxury Motel, Whittier.

Ground floor of two-story stucco building; room 109.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
276 0030 - 276 1820	24	27	06dB	UP,000,090?	303	18dB	UP,000,090?	A

NAR

Lat = 34°01.88', Long = -118°03.19', Elev = 67 m

Whittier Narrows Dam maintenance yard, Whittier.

Concrete pad in 1.5m × 2m metal hut (noisy site?).

Co-sited with USGS smr #289 (upstream).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 1510 - 279 2015	42	11	06dB	UP,340,070	196	18dB	UP,340,070	A-C
279 2025 - 280 1730	"	"	"	"	"	24dB	"	D
280 1730 - 282 2125	"	"	"	"	"	30dB	"	E-G
282 2125 - 285 2000	"	"	"	"	"	"	"	H-I*
285 2000 - 287 1605	"	"	"	"	"	"	"	I-J

Sensors aligned with smr.

*100 sps/channel

OLV

Lat = 34°06.02', Long = -117°58.45', Elev = 116 m

Olive Junior High School, 3699 North Holly Ave., Baldwin Park.

One-story 20m × 30m gymnasium; heater room.

Co-sited with USC smr #69.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
276 0005 - 276 2140	28	32	06dB	UP,000,090	162	18dB	UP,014,104	A
276 2140 - 280 1755	"	"	"	"	"	24dB	"	A-C
280 1755 - 282 1600	"	"	"	"	"	30dB	"	D
282 1600 - 287 1630	"	"	"	"	"	36dB	"	D-E

RHD

Lat = 33°58.71', Long = -118°03.66', Elev = 50 m

Rogers residence, 11432 Rose Hedge Dr., Whittier.

5m × 7m concrete patio behind one-story wood-frame house.

Lightly damaged residential area.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
297 2305 - 313 1635	15	21	06dB	UP,000,090	190	36dB	UP,000,090	A-C

RNE

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library roof - northeast site, Caltech, Pasadena (see Figure A4).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
288 2225 - 297 1610	24	52	06dB	UP,000,090	303	30dB	UP,000,090	A-B
297 1610 - 297 1720	"	-	-	-	"	60dB	"	B*

*400 sps/channel

ROS

Lat = 34°00.48', Long = -118°01.54', Elev = 268 m

Rose Hill Memorial Park, Whittier.

Sunken 10m × 6m × 6m concrete box abutting one-story brick warehouse.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 1710 - 276 1620	15	12	06dB	UP,000,090	184	18dB	UP,014,104	A
276 1625 - 277 2300	21	"	"	"	"	"	"	B
277 2300 - 278 ?	"	"	"	"	305	"	"	C
278 ? - 278 2100	"	"	"	"	"	24dB	"	C

RSE

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library roof - southeast site, Caltech, Pasadena (see Figure A4).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
288 2335 - 297 1600	21	53	06dB	UP,000,090	196	30dB	UP,000,090	A-B
297 1600 - 297 1710	"	-	-	-	"	60dB	"	B*

*400 sps/channel

RWC

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library roof - westcenter site, Caltech, Pasadena (see Figure A4).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
288 2340 - 297 1620	28	51	06dB	UP,000,090	311	30dB	UP,000,090	A-B
297 1620 - 297 1730	"	-	-	-	"	60dB	"	B*
297 1740 - 313 2140	"	51	06dB	UP,000,090	"	36dB	"	C-D

*400 sps/channel

SAG

Lat = 34°08.13', Long = -118°01.88', Elev = 139 m

Santa Anita Golf Course - old club house, Arcadia.

Concrete floor of 14m × 30m two-story wood-frame building (demolished after earthquake).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
275 1630 - 276 1720	06	54	06dB	UP,000,090	200	18dB	UP,000,090	A
276 1720 - 278 2200	"	"	"	"	"	24dB	"	A-B

STE

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library steam tunnel - southeast site, Caltech, Pasadena (see Figure A5).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
297 1835 - 313 2130	24	52	06dB	UP,000,090	196	36dB	UP,000,090	A-B

STW

Lat = 34°08.21', Long = -118°07.52', Elev = 229 m

Millikan Library steam tunnel - southwest site, Caltech, Pasadena (see Figure A5).

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
297 1900 - 313 2020	21	53	06dB	UP,000,090	303	36dB	UP,000,090	A-B

SVS

Lat = 33°59.41', Long = -118°06.83', Elev = 56 m

Saint Vincent Seminary, 1105 Bluff Rd., Montebello.

Ground floor of two-story brick building; storage room.

Co-sited with USC smr #11.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
278 2205 - 280 1650	21	12	06dB	UP,000,090	184	24dB	UP,000,090	A-B
280 1650 - 280 1702	"	"	"	"	"	30dB	"	C
280 1702 - 282 1800	"	"	"	"	"	24dB	"	C
282 1800 - 287 1535	"	"	"	"	"	36dB	"	C-D

SWA

Lat = 34°06.92', Long = -118°07.82', Elev = 172 m

Southwestern Academy, San Marino.

One-story concrete-block shop building; storage room.

Co-sited with CDMG smr #24401.

		FBA-13			L22

Time (UTC)	GEOS	#	Gain	Orientation	#	Gain	Orientation	Tape
279 0005 - 280 2220	43	55	06dB	UP,000,090	154	24dB	UP,000,090	A-C
280 2220 - 296 1615	"	"	"	"	"	36dB	"	C-D

Open-File Report 88-688

Digital Recordings of Aftershocks of the
1 October 1987 Whittier Narrows, California, Earthquake