USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
January 04, 2009, The Geysers, California Earthquake (posted 01/05/2009)
Mw 4.2, 01/04/2009, 17:27 UTC, 01/04/2009, 09:27 AM PST, 38.783 N, 122.772 W, 4.3 km depth, Regional Network ID# nc51214595
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
ADSP	Etna	3433	CA:Anderson Springs	Calpine	38.7742	-122.7056	5.9	100	1	EpiSen	90	-135	2.29	4.7	0.337	0.0331
									2	EpiSen	360	-144	-2.90	8.1	0.917	0.0946
									3	EpiSen	UP	-88	1.33	2.0	0.320	0.0369
COB	K2	3432	CA:Cobb	Calpine	38.8387	-122.7528	6.4	15	1	EpiSen	90	56	-2.03	8.7	1.820	0.1040
									2	EpiSen	360	39	1.07	4.0	0.316	0.0463
									3	EpiSen	UP	-31	0.55	1.8	0.251	0.0246
1765	Etna	2016	CA:Napa; Fire Station 3	USGS	38.3305	-122.3185	63.9	142	1	EpiSen	90	1.7	0.079	0.426	0.037	0.0166
									2	EpiSen	360	1.4	-0.075	0.392	0.033	0.0180
									3	EpiSen	UP	0.7	-0.030	0.129	0.031	0.0068