USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
May 05, 2012, Cobb, California Earthquake (posted 05/30/2012)
Mw 4.5, 05/05/2012, 09:23 UTC, 05/05/2012, 02:23 AM PDT, 38.796 N, 122.759 W, 2.8 km depth, Regional Network ID# nc71776130
Sta	Inst	Inst	State: Island; City; Recorder Location	Owner	Lat	Lon	Dist	Az	Ch	Sensor	Orient	PGA	PGV	PSA 5% damping %g
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
COB	Etna	3432	CA: Cobb	Calpine	38.8387	-122.7528	4.8	6	1	EpiSen	90	73.5	-2.44	10.6	0.979	0.0676
									2	EpiSen	360	35.3	1.20	5.8	0.391	0.0689
									3	EpiSen	UP	40.4	0.58	3.9	0.251	0.0315
ADSP	Etna	3433	CA: Anderson Springs	Calpine	38.7742	-122.7056	5.2	118	1	EpiSen	90	93.6	1.36	3.6	0.436	0.0374
									2	EpiSen	360	113.0	2.58	9.2	0.529	0.0467
									3	EpiSen	UP	79.1	1.03	2.4	0.304	0.0317
ADS2	Etna	6643	CA: Anderson Springs;Town Pool	Altarock	38.7745	-122.6997	5.7	115	1	EpiSen	90	58.4	0.60	2.5	0.434	0.0342
									2	EpiSen	360	96.1	0.83	3.1	0.270	0.0338
									3	EpiSen	UP	67.8	0.57	2.3	0.374	0.0332
1765	Etna	2016	CA: Napa;Fire Station 3	USGS	38.3305	-122.3185	64.4	143	1	EpiSen	90	-0.7	0.06	0.2	0.061	0.0289
									2	EpiSen	360	0.8	0.04	0.2	0.061	0.0216
									3	EpiSen	UP	-0.5	0.03	0.1	0.043	0.0087