USGS National-Strong Motion Program
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
February 21, 2012, Bertrand, Missouri Earthquake (posted 02/24/2012)
Mw 3.9, 02/21/2012, 09:58 UTC, 02/21/2012, 03:58 AM CST, 36.873 N, 89.423 W, 7.9 km depth, Regional Network ID# nm022212a
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
2420	K2	1866	MO:New Madrid;Noranda Plant	USGS	36.5097	-89.5683	42.4	198	1	EpiSen	90	-2.1	-0.0865	0.484	0.0461	0.00322
									2	EpiSen	360	-2.0	-0.0584	0.435	0.0390	0.00242
									3	EpiSen	UP	2.7	-0.0497	0.189	0.0177	0.00124
2457	Etna	2025	MO:Dexter;Fire Station 2	USGS	36.7963	-89.9663	49.2	260	1	EpiSen	90	-2.6	0.0462	0.330	0.0239	0.00122
									2	EpiSen	360	2.8	0.0979	0.412	0.0408	0.00283
									3	EpiSen	UP	1.8	-0.0228	0.104	0.0108	0.00051
2450	Etna	1430	TN:Union City;Fire Station	USGS	36.4270	-89.0608	59.2	147	1	FBA-2g	360	2.7	-0.0906	0.621	0.0426	0.00264
									2	FBA-2g	UP	-2.2	-0.0388	0.186	0.0217	0.00107
									3	FBA-2g	90	4.1	0.1460	0.732	0.0402	0.00425
2495	Etna	1439	MO:Poplar Bluff;Fire Station	USGS	36.7373	-90.3984	88.4	260	1	FBA-2g	360	-3.1	-0.0613	0.163	0.0136	0.00113
									2	FBA-2g	UP	-1.6	0.0236	0.081	0.0027	0.00027
									3	FBA-2g	90	1.9	-0.0345	0.074	0.0077	0.00065
2459	Etna	3963	AR:Paragould;Post Office	USGS	36.0565	-90.4875	131.6	227	1	EpiSen	90	-0.6	-0.0280	0.167	0.0228	0.00103
									2	EpiSen	360	0.9	-0.0443	0.265	0.0251	0.00130
									3	EpiSen	UP	1.1	-0.0167	0.075	0.0050	0.00028