USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
December 19, 2007, Big Bear Lake, California Earthquake (posted 12/28/2007)
ML 4.0, 12/19/2007, 12:14 UTC, 12/19/2007, 04:14 AM PST, 34.156 N, 116.982 W, 10.2 km depth, Regional Network ID# ci10295849
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
5075	Etna	1436	CA:Forest Falls;Post Office	USGS	34.088	-116.919	9.5	142	1	FBA-2g	180	24.1	0.622	2.00	0.138	0.01200
									2	FBA-2g	UP	-15.6	-0.327	2.08	0.086	0.00714
									3	FBA-2g	270	23.6	-0.595	2.30	0.142	0.01090
5076	Etna	1434	CA:Yucaipa;Mill Creek Ranger Sta	USGS	34.079	-117.045	10.3	214	1	FBA-2g	180	-71.6	2.310	8.07	0.428	0.03780
									2	FBA-2g	UP	30.4	0.842	2.94	0.144	0.01220
									3	FBA-2g	270	22.3	0.564	2.73	0.129	0.01150
5300	MtWh	194	CA:Redlands;Seven Oaks Dam	ACOE	34.1173	-117.0978	11.5	248
			Tunnel chamber						1	EpiSen	90	-3.1	0.121	0.33	0.051	0.00535
			Tunnel chamber						2	EpiSen	360	-3.7	0.091	0.17	0.062	0.00539
			Tunnel chamber						3	EpiSen	UP	-4.6	-0.079	0.35	0.056	0.00301
			Right abutment						4	EpiSen	90	12.3	-0.247	0.62	0.077	0.00805
			Right abutment						5	EpiSen	360	10.7	-0.218	0.59	0.045	0.00610
			Right abutment						6	EpiSen	UP	8.6	0.155	0.51	0.038	0.00430
			Right crest						7	EpiSen	90	*	*
			Right crest						8	EpiSen	360	*	*
			Right crest						9	EpiSen	UP	*	*
			Center crest, surface						10	EpiSen	90	-23.1	-0.814	4.48	0.346	0.02180
			Center crest, surface						11	EpiSen	360	25.6	-0.877	4.00	0.252	0.01530
			Center crest, surface						12	EpiSen	UP	-15.5	-0.370	2.42	0.102	0.00692
			Center crest, downhole 152'						13	EpiSen	UP	7.4	0.212	1.38	0.084	0.00530
			Center crest, downhole 152'						14	EpiSen	360	**	**
			Center crest, downhole 152'						15	EpiSen	90	-10.3	-0.458	1.00	0.259	0.01470
			Intake structure						16	EpiSen	90	*	*
			Intake structure						17	EpiSen	360	*	*
			Intake structure						18	EpiSen	UP	*	*
5300	K2	1421	CA:Redlands;Seven Oaks Dam	ACOE	34.1105	-117.0986	11.9	245
			Downstream, surface						1	EpiSen	90	41.6	1.010	2.71	0.162	0.01570
			Downstream, surface						2	EpiSen	360	-26.0	-0.431	0.87	0.075	0.00909
			Downstream, surface						3	EpiSen	UP	37.1	-0.391	0.50	0.056	0.00410
			Downstream, downhole 53'						4	EpiSen	90	-16.6	0.375	1.39	0.072	0.00741
			Downstream, downhole 53'						5	EpiSen	360	-5.7	-0.170	0.59	0.078	0.00685
			Downstream, downhole 53'						6	EpiSen	UP	-9.7	0.170	0.45	0.052	0.00370
5162	Etna	1417	CA:Mentone;Fire Station 9	USGS	34.067	-117.117	15.9	232	1	FBA-2g	180	6.4	0.253	0.64	0.295	0.01560
									2	FBA-2g	UP	-8.3	0.205	0.60	0.130	0.00899
									3	FBA-2g	270	-7.7	0.258	1.59	0.213	0.00951
5161	Etna	1982	CA:Highland;Fire Station 8	USGS	34.1362	-117.2135	21.5	264	1	EpiSen	90	11.2	0.246	0.42	0.081	0.00713
									2	EpiSen	360	9.6	-0.196	0.64	0.058	0.00507
									3	EpiSen	UP	7.0	-0.105	0.19	0.040	0.00275
5331	Etna	2008	CA:SBD;Del Rosa Work Station	USGS	34.1663	-117.2512	24.8	273	1	EpiSen	111	5.4	-0.117	0.48	0.061	0.00494
									2	EpiSen	21	-6.5	-0.151	0.27	0.036	0.00238
									3	EpiSen	UP	3.0	0.074	0.18	0.036	0.00343
5327	K2	593	CA:San Bernardino;Fire Sta 7	USGS	34.1652	-117.2886	28.3	272	1	FBA-2g	360	7.9	0.209	0.56	0.063	0.00539
									2	FBA-2g	UP	-5.9	-0.068	0.22	0.021	0.00157
									3	FBA-2g	90	-8.8	0.198	0.53	0.040	0.00362
5329	K2	548	CA:San Bernardino;Fire Sta 11	USGS	34.0691	-117.2755	28.7	250	1	FBA-2g	180	6.7	0.248	0.49	0.167	0.00788
									2	FBA-2g	UP	2.4	-0.053	0.16	0.063	0.00429
									3	FBA-2g	270	6.8	-0.172	0.46	0.156	0.00868
5339	K2	584	CA:San Bernardino;Fire Sta 10	USGS	34.091	-117.289	29.2	256	1	FBA-2g	180	6.1	0.188	0.30	0.082	0.00516
									2	FBA-2g	UP	3.2	0.052	0.12	0.074	0.00377
									3	FBA-2g	270	-4.0	0.119	0.30	0.063	0.00808
5438	K2	2003	CA:SBD;Valley College Obs	USGS	34.0869	-117.3114	31.3	256	1	EpiSen	90	6.3	-0.149	0.33	0.086	0.00708
									2	EpiSen	360	4.3	-0.162	0.47	0.145	0.00592
									3	EpiSen	UP	-3.5	-0.076	0.18	0.083	0.00317
		*	sensor inoperative
		**	noisy, only uncorrected accel served