USGS National-Strong Motion Project
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
August 22, 2011, Trinidad, Colorado Earthquake (posted 12/13/2011)
Mw 5.4, 08/23/2011, 05:46 UTC, 08/22/2011, 11:46 PM MDT, 37.063 N, 104.701 W, 4.0 km depth, Regional Network ID# usc0005idz
Sta	Inst	Inst	State: 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
2313	K2	2174	CO:Trinidad Dam; Tower Array	ACOE	37.1411	-104.5513	15.9	57
			Upper Tower						1	EpiSen	135	43.2	-3.39	5.9	4.3	0.413
			Upper Tower						2	EpiSen	45	-47.6	3.77	9.9	4.6	0.553
			Upper Tower						3	EpiSen	UP	52.7	-2.02	4.3	2.1	0.678
			Lower Tower						4	EpiSen	135	-34.1	-1.59	3.5	1.9	0.301
			Lower Tower						5	EpiSen	45	22.2	2.15	6.8	2.9	0.512
			Lower Tower						6	EpiSen	UP	13.7	1.56	2.4	1.9	0.677
2313	Etna	4064	CO:Trinidad Dam; Crest	ACOE	37.1432	-104.5521	15.9	56	1	EpiSen	135	-100.0	-4.79	16.3	4.1	0.401
									2	EpiSen	45	-57.5	4.31	18.4	4.3	0.565
									3	EpiSen	UP	54.0	2.82	17.5	2.1	0.671
2313	Etna	4065	CO:Trinidad Dam; Rt Abutment, Downstream	ACOE	37.1428	-104.5473	16.3	57	1	EpiSen	90	-36.2	1.92	7.6	2.3	0.363
									2	EpiSen	360	56.5	-2.11	4.2	2.6	0.464
									3	EpiSen	UP	-13.6	1.74	1.6	1.7	0.669