USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
August 31, 2005, Obsidian Butte, CA Earthquake (posted 09/01/2005)
Mw 4.7, 08/31/2005, 22:47 UTC, 08/31/2005, 03:47 PM PDT, 33.160 N, 115.630 W, 5.0 km depth, Regional Network ID# ci14178184
Sta	Inst	Inst	State: City; Recorder Location	Owner	Lat	Lon	Dist	Az	Ch	Sensor	Orient	PGA	PGV	PSA at:
Code	type	S/N			deg	deg	km	deg	No	type	deg	cm/s/s	cm/s	0.3 s	1.0 s	3.0 s
5061	Etna	2053	CA: Calipatria; Fire Station	USGS	33.1266	-115.5159	10.6	109	1	EpiSen	90	66.3	4.62	10.00	5.25	1.040
									2	EpiSen	360	-45.0	3.82	9.63	5.39	1.270
									3	EpiSen	UP	76.7	2.21	6.14	1.33	0.390
5060	K2	523	CA: Brawley; Airport Hangar	USGS	32.9910	-115.5128	21.7	150	1	FBA-2g	360	13.9	0.70	1.34	0.99	0.337
									2	FBA-2g	UP	-7.5	0.33	1.21	0.28	0.132
									3	FBA-2g	90	18.2	-1.27	1.66	1.48	0.348
5054	Etna	2052	CA: Bond's Corner; Omlin Residence	USGS	32.6932	-115.3382	58.5	152	1	EpiSen	90	5.5	-0.33	1.46	0.22	0.071
									2	EpiSen	360	4.5	-0.21	0.85	0.24	0.060
									3	EpiSen	UP	2.3	-0.14	0.76	0.18	0.012