Phase Data
25 FEB 2013 ( 56)
ot = 07:32:02.72 +/- 1.34 EASTERN HONSHU, JAPAN
lat = 36.951 +/- 12.3
lon = 139.195 +/- 11.2 MAGNITUDE 4.5 (GS)
dep = 10.0 +/- 1.9
64 km (40 miles) N of Maebashi, Honshu, Japan (pop 318,000)
76 km (47 miles) NW of Utsunomiya, Honshu, Japan (pop 457,000)
96 km (60 miles) ENE of Nagano, Honshu, Japan (pop 378,000)
149 km (93 miles) NNW of TOKYO, Japan (pop 8,489,000)
nph = 18 of 18 se = 0.66 FE=227 A
error ellipse = (140.0, 0.0, 22.5;230.0, 0.0, 12.4; 33.0, 89.0, 2.9)
mb = 4.5 ( 13) ML = 4.0 ( 8) mblg = 3.2 ( 3) md = 3.6 ( 1) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
MAJO ePg 07:32:19.82 -0.1 0.9 243 d:1.2+2 3.6 L:1.8+0 2.4 3.2 MAJO
g:2.2-1 .80 3.2
INU ePn 07:32:42.71 1.0 2.4 228 L:7.0-1 4.9 3.6 INU
JHJ2 ePn 07:33:01.18 -1.0 3.9 172 L:2.4+0 4.8 4.7 JHJ2
ERM ePn 07:33:29.89 -0.4 5.9 30 L:2.5-1 4.8 4.4 ERM
ANM eP 07:39:59.26 0.7 42.6 32 b:3.7+0 1.1 4.0 ANM
TOLK eP 07:40:52.74 0.8 49.4 27 b:2.6+0 .95 4.2 TOLK
MDM eP 07:40:56.29 0.0 49.9 32 b:6.8+0 1.0 4.6 MDM
DAWY eP 07:41:25.72 0.3 53.8 33 b:1.3+0 1.0 3.9 DAWY
EPYK eP 07:41:30.43 0.4 54.5 30 b:9.5+0 .90 4.8 EPYK
INK eP 07:41:35.67 0.0 55.3 27 b:4.7+0 1.0 4.4 INK
HYT eP 07:41:38.15 1.1 55.4 36 b:3.3+0 .80 4.4 HYT
WRAB eP 07:41:44.97 -1.9 56.8 185 b:9.1+0 1.0 4.8 WRAB
ABKAReP 07:41:45.32 -0.4 56.6 310 ABKA
RES eP 07:42:29.44 -0.5 63.1 14 RES
BEKR eP 07:43:40.54 -0.1 74.3 52 b:3.7+0 1.0 4.3 BEKR
DLMT eP 07:43:48.06 -0.1 75.6 44 b:4.9+0 .95 4.6 DLMT
KVN eP 07:43:51.50 0.0 76.2 51 b:2.9+0 .98 4.3 KVN
H17A eP 07:43:59.92 1.9 77.4 44 b:8.2+0 1.1 4.7 H17A
Generated 2013 FEB 25 at 08:03 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
