USGS National-Strong Motion Project
Preliminary Corrected Peak Ground Acceleration and Velocity and Pseudo-Spectral Acceleration Values for
February 28, 2011, Greenbrier, Arkansas Earthquake (posted 02/28/2011; updated 3/2/2011)
Mw 4.7, 02/28/2011, 05:00 UTC, 02/27/2011, 11:00 PM CST, 35.265 N, 92.344 W, 3.8 km depth, Regional Network ID# nm022811a
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
2459	Etna	3963	AR:Paragould;Post Office	USGS	36.0565	-90.4875	189.7	62	1	EpiSen	90	-1.55	0.095	0.416	0.232	0.0114
									2	EpiSen	360	-1.95	-0.125	0.444	0.239	0.0137
									3	EpiSen	UP	-1.09	-0.036	0.117	0.054	0.0032
7404	Etna	4026	TN:Memphis; VAMC	VA	35.1435	-90.0257	211.5	93	1	EpiSen	90	1.71	-0.104	0.539	0.134	0.0062
									2	EpiSen	360	-2.31	0.145	0.885	0.220	0.0102
									3	EpiSen	UP	1.19	-0.047	0.192	0.038	0.0034
2495	Etna	1439	MO:Poplar Bluff;Fire Station	USGS	36.7373	-90.3984	239.7	46	1	FBA-2g	360	1.77	-0.124	0.299	0.189	0.0110
									2	FBA-2g	UP	0.72	0.056	0.150	0.061	0.0027
									3	FBA-2g	90	-1.71	0.104	0.195	0.104	0.0090
2454	Etna	2022	MO:Campbell;Fire Station	USGS	36.4940	-90.0758	246.1	56	1	EpiSen	90	-1.16	-0.099	0.220	0.218	0.0106
									2	EpiSen	360	-1.34	0.135	0.284	0.194	0.0261
									3	EpiSen	UP	-0.59	-0.043	0.100	0.139	0.0038
2457	Etna	2025	MO:Dexter;Fire Station 2	USGS	36.7963	-89.9663	273.5	51	1	EpiSen	90	-1.59	-0.118	0.353	0.232	0.0092
									2	EpiSen	360	2.05	0.164	0.398	0.327	0.0165
									3	EpiSen	UP	0.52	-0.035	0.113	0.043	0.0022
2491	Etna	1435	MO:St Louis;Visitors Ctr;FF	USGS	38.6263	-90.1911	419.4	27	1	FBA-2g	16	1.28	-0.080	0.222	0.041	0.0034
									2	FBA-2g	UP	0.41	0.031	0.157	0.032	0.0026
									3	FBA-2g	106	1.53	0.123	0.265	0.081	0.0052