Phase Data
19 JAN 2012 ( 19)
ot = 23:35:37.96 +/- 1.98 TONGA REGION
lat = -17.857 +/- 13.3
lon = -172.553 +/- 15.4 MAGNITUDE 4.9 (GS)
dep = 30.1 +/- 4.7
175 km (109 miles) ENE of Neiafu, Tonga
246 km (153 miles) SSE of Hihifo, Tonga
456 km (283 miles) NE of NUKU`ALOFA, Tonga
2445 km (1518 miles) NE of Auckland, New Zealand
nph = 48 of 52 se = 0.98 FE=174 A
error ellipse = (124.0, 5.0, 26.0;214.0, 1.0, 17.4;321.0, 84.0, 6.8)
mb = 4.9 ( 33) ML = 4.4 ( 2) mblg = 4.0 ( 2) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
AFI ePn 23:36:35.18 -2.1 4.0 11 L:9.9-1 2.3 4.4 g:3.2-1 1.2 4.0 AFI
OUZ eP 23:40:20.79 -0.7 21.2 213 b:6.6+1 1.4 4.9 OUZ
CTAO eP 23:43:01.53 -0.1 39.0 260 b:1.3+1 .90 4.7 CTAO
PMG eP 23:43:10.50 0.4 40.0 277 b:1.9+1 1.0 4.8 PMG
STCH eP 23:43:22.94 6.2X 40.8 26 STCH
NPOC eP 23:43:25.59 8.8X 40.8 26 NPOC
HULD eP 23:43:28.71 11.3X 40.9 26 HULD
JCUZ eP 23:43:30.89 14.1X 40.8 26 JCUZ
COEN eP 23:43:32.98 0.6 42.7 269 b:1.1+1 .80 4.6 COEN
STKA eP 23:43:39.50 0.1 43.6 242 b:1.5+1 1.7 4.5 STKA
BBOO eP 23:44:16.24 -0.7 48.3 242 b:6.9+1 1.6 5.4 BBOO
WRAB eP 23:44:29.69 -1.0 50.1 259 b:2.1+1 .95 5.1 WRAB
WB2 eP 23:44:29.72 -1.0 50.1 259 WB2
eP 23:44:30.37 -0.4
AS01 eP 23:44:30.44 -0.4 50.1 254 AS01
AS31 eP 23:44:31.30 0.1 50.2 254 b:4.4+1 1.6 5.2 AS31
MTN eP 23:45:02.74 0.3 54.4 267 b:8.8+0 .80 4.8 MTN
FORT eP 23:45:06.55 -0.8 55.1 245 b:4.7+2 1.2 6.4 FORT
SBA eP 23:45:47.69 0.4 60.9 185 b:1.4+1 1.0 5.1 SBA
VNDA eP 23:45:49.07 0.8 61.0 186 b:1.1+1 1.3 4.8 VNDA
SOEI eP 23:45:54.50 0.9 61.6 268 b:1.1+2 1.3 5.8 SOEI
TNTI eP 23:45:54.64 -0.6 61.9 281 b:8.1+1 1.0 5.8 TNTI
MBWA eP 23:46:04.99 -0.7 63.5 255 b:5.8+1 1.5 5.5 MBWA
LUWI eP 23:46:21.22 1.5 65.6 277 b:1.0+2 1.4 5.7 LUWI
QSPA eP 23:46:59.81 -0.1 72.2 180 b:3.5+1 1.4 5.2 QSPA
KVN epP 23:47:30.75 0.6 76.1 41 KVN
PSUT eP 23:47:34.67 -2.1 78.5 43 b:1.3+1 1.0 4.9 PSUT
KSM eP 23:47:36.75 1.4 78.2 275 b:5.3+1 1.3 5.4 KSM
KS01 eP 23:47:39.14 2.8 78.5 316 KS01
TX31 eP 23:47:50.70 -1.1 81.3 56 TX31
CAST eP 23:47:57.22 -0.4 82.6 9 b:4.2+0 .68 4.6 CAST
TRF eP 23:47:58.52 -0.9 82.9 10 b:9.6+0 .92 4.9 TRF
LNIG eP 23:47:59.63 -0.5 82.9 61 b:2.0+1 1.5 5.0 LNIG
RND eP 23:48:00.52 0.1 83.1 11 b:1.1+1 1.2 4.8 RND
MCK eP 23:48:01.27 -0.5 83.4 10 b:8.6+0 .80 4.9 MCK
PDAR eP 23:48:01.49 -2.0 83.6 41 PDAR
PD31 eP 23:48:03.37 -0.1 83.6 41 PD31
CCB eP 23:48:06.40 -0.6 84.4 11 b:6.1+0 .92 4.8 CCB
MDM eP 23:48:06.96 -1.2 84.6 10 b:1.3+1 1.2 5.0 MDM
IL1 eP 23:48:07.24 -1.2 84.7 11 IL1
HDA eP 23:48:07.70 1.0 84.4 11 b:3.6+1 2.0 5.2 HDA
IMAR eP 23:48:08.49 -0.3 84.8 8 IMAR
ILB eP 23:48:09.02 0.6 84.7 11 ILB
DAWY eP 23:48:13.10 0.1 85.6 14 b:2.7+1 1.9 5.1 DAWY
ABTX eP 23:48:15.70 0.7 85.8 54 b:2.4+1 1.7 5.2 ABTX
COLD eP 23:48:20.40 3.3 86.4 9 b:1.1+1 1.5 4.9 COLD
SNAA eP 23:48:35.86 -0.4 90.4 177 b:1.6+1 1.6 5.1 SNAA
CLL ePKPdf 23:55:16.00 1.6 146.3 354 CLL
GEA0 ePKPbc 23:55:22.10 -0.2 148.7 352 GEA0
KHC ePKPbc 23:55:22.26 0.7 148.4 352 KHC
BR231ePKPbc 23:55:23.69 0.2 149.0 320 BR23
FUORNePKPbc 23:55:29.35 0.6 151.2 356 FUOR
Generated 2012 JAN 19 at 23:58 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
