Phase Data
25 MAY 2012 (146)
ot = 04:36:06.69 +/- 2.12 TONGA REGION
lat = -22.435 +/- 13.4
lon = -173.973 +/- 15.9 MAGNITUDE 4.6 (GS)
dep = 23.9 +/- 2.4
192 km (119 miles) SE of NUKU`ALOFA, Tonga
419 km (260 miles) S of Neiafu, Tonga
528 km (328 miles) ESE of Ndoi Island, Fiji
1932 km (1200 miles) NE of Auckland, New Zealand
nph = 40 of 40 se = 1.05 FE=174 A
error ellipse = (113.0, 5.0, 25.2;203.0, 6.0, 19.8;342.0, 81.0, 1.8)
mb = 4.6 ( 17) ML = 5.5 ( 2) mblg = 0.0 ( 0) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
RAO ePn 04:37:55.42 -1.4 7.7 207 L:1.2+0 .57 5.5 RAO
MSVF ePn 04:38:12.80 -0.1 8.8 301 MSVF
RAR ePn 04:39:08.67 -4.7 13.3 87 RAR
AS01 eP 04:44:38.54 -3.4 47.7 258 AS01
AS31 eP 04:44:39.20 -3.0 47.8 258 b:1.4+0 .65 4.1 AS31
VNDA eP 04:45:47.95 2.6 56.4 186 b:3.8+0 1.1 4.3 VNDA
CASY eP 04:46:38.20 1.4 63.8 206 b:1.3+1 .95 5.1 CASY
QSPA eP 04:47:02.94 1.4 67.7 180 b:7.6+0 1.1 4.7 QSPA
NV01 eP 04:48:13.80 -0.2 79.9 41 NV01
X16A eP 04:48:26.00 0.9 82.0 48 b:3.4+0 .90 4.4 X16A
MTPU eP 04:48:34.91 1.7 83.5 45 b:6.0+0 .92 4.8 MTPU
G08A eP 04:48:35.00 0.2 83.9 36 b:4.1+0 .85 4.7 G08A
MSU eP 04:48:35.61 1.1 83.8 44 MSU
MFID eP 04:48:37.70 0.0 84.5 39 b:2.9+0 1.0 4.5 MFID
TX31 eP 04:48:39.04 -1.4 85.0 56 TX31
eP 04:48:40.37 0.0
F10A eP 04:48:40.97 -0.7 85.3 36 b:2.6+1 1.9 5.1 F10A
ANMO eP 04:48:44.74 0.5 85.7 50 b:4.1+0 1.0 4.6 ANMO
PV09 eP 04:48:44.96 0.4 85.8 46 PV09
eS 04:59:12.98 S res = -3.4
TRF eP 04:48:51.57 -1.1 87.6 10 b:3.3+1 1.9 5.3 TRF
RND eP 04:48:52.88 -0.6 87.8 11 b:6.1+0 1.0 4.8 RND
WRH eP 04:48:58.00 -0.6 88.9 11 b:6.6+0 1.1 4.9 WRH
IL1 eP 04:48:59.54 -1.4 89.4 11 IL1
MDM eP 04:49:00.36 -0.3 89.4 11 b:5.5+0 1.2 4.7 MDM
DAWY eP 04:49:05.47 0.2 90.3 15 b:3.7+0 1.0 4.6 DAWY
AKBB ePKPdf 04:55:44.42 0.2 146.5 333 AKBB
KWP ePKPbc 04:55:54.02 -0.6 149.8 338 KWP
GEA0 ePKPdf 04:55:54.20 -0.5 153.0 349 GEA0
ePKPbc 04:56:01.27 -0.7
ePKPab 04:56:12.26 -0.9
BUR04ePKPbc 04:55:56.35 -0.1 150.5 333 BUR0
epPKPab 04:56:09.45 1.1
CLL ePKPbc 04:55:56.50 -0.1 150.7 351 CLL
epPKPab 04:56:08.82 0.0
BUR08ePKPbc 04:55:57.52 1.1 150.5 333 BUR0
epPKPab 04:56:09.75 1.5
MORC ePKPbc 04:55:58.19 0.2 151.2 344 MORC
ePKPab 04:56:10.20 4.3
KHC ePKPbc 04:56:01.36 0.0 152.7 349 KHC
Generated 2012 MAY 25 at 05:51 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
