Phase Data
20 MAY 2012 (141)
ot = 05:06:56.32 +/- 1.18 SOUTH ISLAND OF NEW ZEALAND
lat = -43.573 +/- 8.2
lon = 172.932 +/- 6.4 MAGNITUDE 4.8 (WEL)
dep = 10.2 +/- 3.1
22 km (13 miles) E of Christchurch, New Zealand (pop 367,000)
230 km (143 miles) SSE of Westport, New Zealand
295 km (183 miles) SSW of WELLINGTON, New Zealand
320 km (199 miles) NE of Dunedin, New Zealand
ML 4.8 (WEL). Felt at Canterbury.
nph = 28 of 29 se = 0.58 FE=162 A
error ellipse = (155.0, 2.0, 13.3;245.0, 2.0, 9.0; 18.0, 86.0, 4.7)
mb = 4.1 ( 1) ML = 4.6 ( 40) mblg = 4.2 ( 18) md = 4.5 ( 6) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
MQZ ePg 05:07:01.67 0.4 0.2 236 d:3.5+2 4.3 L:1.7+2 .43 4.5 MQZ
eSg 05:07:04.90 S res = 0.2
CRLZ ePg 05:07:01.71 0.7 0.2 269 d:3.7+2 4.3 L:6.3+2 .81 5.0 CRLZ
eSg 05:07:04.16 S res = 0.1
OXZ ePg 05:07:09.50 -0.3 0.7 291 d:3.7+2 4.5 L:3.0+2 .68 5.3 OXZ
eSg 05:07:19.05 S res = 0.1
KHZ ePn 05:07:19.95 0.3 1.2 21 d:2.2+2 4.3 L:6.7+0 .62 4.1 KHZ
g:1.4+0 1.0 4.1
RPZ ePn 05:07:20.72 -0.8 1.4 263 d:3.3+2 4.7 L:2.7+1 .62 4.7 RPZ
eSn 05:07:38.05 S res = -1.7 g:4.4+0 .84 4.6
THZ ePn 05:07:27.72 0.2 1.8 359 d:3.2+2 4.8 L:8.3+0 .79 4.4 THZ
g:2.3+0 .85 4.5
LBZ ePn 05:07:32.35 0.2 2.1 247 L:1.1+1 .78 4.7 g:1.6+0 .82 4.4 LBZ
ODZ ePn 05:07:32.78 -0.2 2.2 227 L:8.9+0 .91 4.7 ODZ
FOZ ePn 05:07:34.71 0.9 2.3 270 L:6.4+0 .57 4.5 g:2.0+0 1.2 4.5 FOZ
SNZO ePn 05:07:38.42 -0.2 2.6 31 L:1.5+0 1.0 4.1 g:3.1-1 .80 3.8 SNZO
WKZ ePn 05:07:45.20 0.1 3.1 245 L:5.9+0 .99 4.8 g:1.6+0 .91 4.5 WKZ
BFZ ePn 05:07:54.27 -0.6 3.8 42 L:6.3-1 .66 4.1 g:1.3-1 .82 3.5 BFZ
MLZ ePn 05:07:55.81 -0.3 3.9 241 L:2.8+0 1.0 4.8 g:8.2-1 .84 4.3 MLZ
WHZ ePn 05:08:00.42 -0.6 4.2 235 L:1.7+0 1.0 4.7 WHZ
DCZ ePn 05:08:05.05 -0.1 4.6 243 L:1.7+0 .99 4.8 g:5.8-1 .87 4.3 DCZ
PYZ ePn 05:08:12.67 -0.7 5.1 238 L:1.2+0 .94 4.8 g:2.8-1 .76 4.0 PYZ
ePg 05:08:35.00 8.6X
eSg 05:09:37.98 S res = 9.8
BKZ ePn 05:08:13.69 0.2 5.2 33 L:3.9-1 1.3 4.3 g:7.0-2 .93 3.4 BKZ
HIZ ePn 05:08:15.37 0.4 5.3 17 L:7.7-1 .86 4.7 HIZ
URZ ePn 05:08:26.51 -1.0 6.2 32 L:1.6-1 .94 4.2 g:5.0-2 .92 3.4 URZ
MXZ ePn 05:08:40.89 -1.6 7.3 36 L:2.9-1 1.6 4.8 MXZ
AS01 eP 05:14:10.74 -0.5 37.6 289 AS01
AS31 eP 05:14:11.00 -0.5 37.6 289 b:5.7+0 1.5 4.1 AS31
KS01 eP 05:19:59.14 1.5 90.4 326 KS01
Generated 2012 MAY 20 at 05:58 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
