Phase Data
16 JAN 2012 ( 16)
ot = 18:39:54.29 +/- 2.45 TONGA REGION
lat = -19.292 +/- 13.9
lon = -172.897 +/- 14.2 MAGNITUDE 4.9 (GS)
dep = 28.8 +/- 4.5
135 km (84 miles) ESE of Neiafu, Tonga (pop 3,000)
315 km (196 miles) NE of NUKU`ALOFA, Tonga
320 km (199 miles) W of Niue Island
2288 km (1421 miles) NE of Auckland, New Zealand
nph = 69 of 69 se = 1.21 FE=174 A
error ellipse = (131.0, 6.0, 23.4;221.0, 0.0, 19.5;318.0, 83.0, 6.4)
mb = 4.9 ( 44) ML = 0.0 ( 0) 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
AFI ePn 18:41:06.41 -7.4 5.5 12 AFI
RAR ePn 18:42:41.72 -8.1 12.5 101 RAR
DZM eP 18:44:19.33 -0.3 19.5 258 b:5.1+1 .70 4.9 DZM
URZ eP 18:44:34.90 1.6 20.8 203 b:2.4+1 .82 4.6 URZ
BKZ eP 18:44:44.45 0.0 21.8 203 b:6.3+1 1.5 4.8 BKZ
OXZ eP 18:45:33.69 -1.0 27.1 205 b:5.3+1 .98 5.1 OXZ
CAN eP 18:47:02.66 -0.3 37.2 237 b:3.6+1 1.0 5.2 CAN
CTAO eP 18:47:12.01 -1.5 38.4 262 b:1.9+1 .65 5.0 CTAO
PMG eP 18:47:25.22 -0.3 39.8 279 b:1.0+1 .75 4.7 PMG
COEN eP 18:47:45.24 -0.9 42.3 270 b:4.7+1 1.5 5.0 COEN
STKA eP 18:47:47.40 -0.9 42.6 244 b:3.6+0 1.2 4.0 STKA
BBOO eP 18:48:24.96 -1.1 47.4 243 b:1.7+1 1.0 5.0 BBOO
AS01 eP 18:48:39.94 -2.1 49.4 255 AS01
AS31 eP 18:48:40.82 -1.6 49.5 255 b:1.6+1 1.2 4.9 AS31
WRAB eP 18:48:41.08 -1.6 49.5 260 b:3.3+1 1.2 5.2 WRAB
WB2 eP 18:48:41.27 -1.5 49.5 260 b:1.7+1 .65 5.2 WB2
MTN eP 18:49:14.52 -1.6 54.0 268 b:1.9+1 .80 5.2 MTN
SOEI eP 18:50:08.00 0.2 61.3 269 b:4.2+1 .70 5.7 SOEI
MMRI eP 18:50:21.25 -1.4 63.5 270 b:2.1+1 .60 5.4 MMRI
QSPA eP 18:51:07.65 -0.2 70.8 180 b:8.7+0 .90 4.8 QSPA
JAGI eP 18:51:09.85 -1.4 71.2 267 b:4.2+1 .80 5.6 JAGI
MYLDMeP 18:51:14.78 0.5 71.7 282 b:2.2+1 1.2 5.1 MYLD
NV01 eP 18:51:43.57 -0.7 76.9 41 NV01
SBUM eP 18:51:43.66 0.9 76.6 277 b:8.2+0 1.0 4.7 SBUM
NV11 eP 18:51:44.14 -0.6 77.0 41 b:9.0-1 1.4 3.6 NV11
KVN eP 18:51:47.05 0.0 77.4 41 b:2.0+1 1.9 4.8 KVN
KSM eP 18:51:51.85 1.0 78.0 276 b:1.5+1 1.0 5.0 KSM
R11A eP 18:51:53.22 -0.3 78.6 43 b:2.7+0 1.0 4.2 R11A
KS01 eP 18:51:58.79 1.5 79.3 316 KS01
MSU eP 18:52:07.26 1.2 80.9 44 MSU
F10A eP 18:52:11.57 -1.0 82.2 36 b:2.6+1 2.0 4.9 F10A
HLID eP 18:52:13.23 -0.4 82.3 39 b:4.4+0 1.2 4.4 HLID
TX31 eP 18:52:14.40 0.4 82.4 56 TX31
eP 18:52:15.32 1.2
MDJ eP 18:52:15.82 2.2 82.4 323 b:1.2+1 1.1 4.9 MDJ
TCUT eP 18:52:16.17 0.1 82.8 42 b:1.3+1 1.0 4.9 TCUT
ANMO eP 18:52:18.47 1.5 82.9 49 b:6.8+0 1.4 4.6 ANMO
MCMT eP 18:52:22.19 0.0 84.0 38 MCMT
S22A eP 18:52:23.32 0.5 84.1 47 b:7.1+0 1.0 4.8 S22A
DLMT eP 18:52:23.81 -0.5 84.4 38 b:5.4+0 .95 4.7 DLMT
MCK eP 18:52:25.22 -0.6 84.8 11 b:7.9+0 .92 4.9 MCK
BOZ eP 18:52:27.96 0.0 85.2 38 b:2.6+0 .85 4.5 BOZ
HDA eP 18:52:30.06 -0.5 85.8 11 b:8.8+0 1.0 4.9 HDA
CCB eP 18:52:30.16 -0.7 85.9 11 b:1.1+1 1.1 5.0 CCB
IL1 eP 18:52:30.89 -1.4 86.2 11 IL1
MDM eP 18:52:31.32 -0.7 86.1 10 b:9.9+0 1.1 4.9 MDM
IMAR eP 18:52:31.79 -0.8 86.2 8 IMAR
COLA eP 18:52:31.78 -0.1 86.1 11 b:1.5+1 .90 5.2 COLA
DAWY eP 18:52:36.92 0.2 87.1 14 b:6.0+0 .90 4.8 DAWY
EGAK eP 18:52:37.77 0.0 87.3 13 b:7.6+0 1.1 4.8 EGAK
IPM eP 18:52:42.25 0.9 87.8 275 b:1.4+1 1.0 5.2 IPM
KULM eP 18:52:47.96 3.7 88.4 276 b:2.3+1 1.4 5.3 KULM
ENH eP 18:52:50.52 1.9 89.4 302 b:3.7+1 1.3 5.5 ENH
CM01 eP 18:53:12.84 1.5 94.3 288 CM01
CHTO eP 18:53:13.86 1.8 94.4 288 b:4.2+0 .85 4.9 CHTO
AK11 ePKPdf 18:59:24.60 -2.6 144.1 336 AK11
KMBO ePKPdf 18:59:28.56 -0.1 144.1 239 KMBO
ATD ePKPdf 18:59:30.94 1.5 144.7 262 ATD
CWF ePKPdf 18:59:31.21 0.9 146.0 9 CWF
CLL ePKPbc 18:59:36.35 0.3 147.7 353 CLL
BUR04ePKPbc 18:59:37.70 0.3 148.1 336 BUR0
BUR08ePKPbc 18:59:38.20 0.8 148.1 336 BUR0
MORC ePKPbc 18:59:38.74 0.6 148.5 347 MORC
BR131ePKPbc 18:59:41.30 0.3 149.4 317 BR13
BR231ePKPbc 18:59:41.39 -0.8 149.9 318 BR23
GEA0 ePKPbc 18:59:41.90 -0.3 150.1 351 GEA0
KHC ePKPbc 18:59:42.00 0.5 149.8 352 KHC
ANTO ePKPbc 18:59:42.94 0.9 149.9 318 ANTO
BFO ePKPbc 18:59:44.62 0.2 151.0 358 BFO
Generated 2012 JAN 16 at 19:35 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
