Phase Data
12 JAN 2012 ( 12)
ot = 22:31:00.96 +/- 2.58 TONGA
lat = -16.528 +/- 5.7
lon = -173.391 +/- 10.7 MAGNITUDE 5.4 (GS)
dep = 79.5 +/- 9.0
75 km (46 miles) SSE of Hihifo, Tonga (pop 2,000)
243 km (151 miles) NNE of Neiafu, Tonga
544 km (338 miles) NNE of NUKU`ALOFA, Tonga
2537 km (1575 miles) NNE of Auckland, New Zealand
nph = 82 of 106 se = 1.27 FE=173 A
error ellipse = ( 96.0, 13.0, 16.5;309.0, 74.0, 13.6;188.0, 8.0, 8.4)
mb = 5.4 ( 68) ML = 5.1 ( 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
AFI ePn 22:31:48.01 1.2 3.0 31 L:1.1+1 .75 5.1 AFI
FUNA ePn 22:33:33.94 1.9 10.8 317 FUNA
RAR ePn 22:34:12.17 0.4 13.7 112 RAR
KNTN ePn 22:34:15.37 2.7 13.8 7 KNTN
DZM eP 22:35:27.38 2.1 19.8 251 b:1.2+2 1.6 5.0 DZM
OUZ eP 22:35:48.56 0.5 21.9 210 b:2.0+2 1.8 5.2 OUZ
MXZ eP 22:35:51.04 0.3 22.2 198 b:1.1+2 .98 5.2 MXZ
TARA eP 22:35:53.05 0.9 22.3 322 b:4.6+2 1.7 5.6 TARA
PPTF eP 22:35:58.98 1.6 22.8 96 b:3.1+2 1.7 5.4 PPTF
PPT eP 22:35:59.05 1.9X 22.8 96 PPT
URZ eP 22:36:01.39 0.4 23.2 199 b:7.8+1 .96 5.1 URZ
HIZ eP 22:36:09.63 -0.6 24.2 203 b:6.5+2 1.9 5.7 HIZ
XMAS eP 22:36:10.46 -0.4 24.3 42 b:7.3+1 .95 5.1 XMAS
BKZ eP 22:36:10.74 0.3 24.2 199 b:1.5+2 1.9 5.1 BKZ
SNZO eP 22:36:32.39 -0.7 26.8 200 b:2.5+2 1.4 5.5 SNZO
THZ eP 22:36:42.46 0.1 27.8 202 b:2.9+2 1.9 5.5 THZ
LTZ eP 22:36:52.74 0.4X 28.9 202 b:3.1+1 .68 5.1 LTZ
LHI eP 22:36:54.88 0.3 29.1 234 b:2.5+2 1.4 5.7 LHI
OXZ eP 22:36:57.50 0.3 29.4 202 b:3.1+1 .76 5.1 OXZ
CRLZ eP 22:36:58.13 0.9 29.5 201 b:2.0+2 1.5 5.6 CRLZ
MQZ eP 22:36:58.22 0.0 29.6 201 b:1.1+2 1.5 5.3 MQZ
RPZ eP 22:37:02.99 -0.4 30.1 203 b:8.5+1 1.4 5.3 RPZ
FOZ eP 22:37:05.67 -0.5 30.5 205 b:1.5+2 1.4 5.5 FOZ
LBZ eP 22:37:11.76 0.5 31.0 203 b:6.7+1 1.5 5.2 LBZ
KWAJ eP 22:37:15.63 0.9 31.4 322 b:1.9+2 .80 5.9 KWAJ
WKZ eP 22:37:18.47 0.0 31.9 204 b:1.7+2 1.7 5.6 WKZ
MLZ eP 22:37:25.16 -0.4 32.7 205 b:9.5+1 1.7 5.3 MLZ
WHZ eP 22:37:30.22 0.4 33.2 204 b:6.5+1 1.3 5.3 WHZ
TAOE eP 22:37:30.54 -0.7 33.3 81 b:3.1+2 1.6 5.9 TAOE
JOHN eP 22:37:31.02 0.1 33.3 7 b:2.4+2 1.2 5.9 JOHN
ARMA eP 22:37:44.81 0.7 34.8 240 b:1.7+1 1.1 4.9 ARMA
PATS eP 22:37:58.19 0.5 36.4 307 b:4.8+2 1.7 6.2 PATS
CAN eP 22:38:15.34 0.9 38.4 234 b:3.5+1 1.4 5.1 CAN
CTAO eP 22:38:16.38 1.3 38.4 258 b:1.1+1 1.1 4.7 CTAO
PMG eP 22:38:20.92 0.6X 39.0 275 b:8.0+0 .75 4.7 PMG
HLP eP 22:38:25.56 -1.0 39.8 27 b:1.2+2 .92 5.8 HLP
SDHHIeP 22:38:25.61 -1.7 39.9 27 b:7.1+2 1.3 6.4 SDHH
SBLHIeP 22:38:25.64 -2.0 39.9 27 b:1.4+3 1.6 6.6 SBLH
MWH eP 22:38:25.73 -1.6 39.8 27 b:3.7+2 1.7 6.0 MWH
OBL eP 22:38:25.85 -1.7 39.9 27 b:1.9+3 1.5 6.8 OBL
WRMHIeP 22:38:25.88 -1.5 39.9 27 b:6.6+2 1.2 6.4 WRMH
PUH eP 22:38:25.95 -1.5 39.9 27 b:1.7+2 1.2 5.8 PUH
BYL eP 22:38:26.04 -1.5 39.9 27 b:2.0+3 1.8 6.7 BYL
UWB eP 22:38:26.10 -1.5 39.9 27 b:1.1+3 1.5 6.6 UWB
NPOC eP 22:38:26.14 -1.8 40.0 28 b:1.1+2 .86 5.8 NPOC
HATHIeP 22:38:26.48 -1.2 39.9 27 b:5.8+2 1.0 6.4 HATH
KKO eP 22:38:26.62 -0.9 39.9 27 b:1.2+3 1.7 6.5 KKO
POHA eP 22:38:29.14 -0.1 40.1 27 b:1.4+2 1.2 5.7 POHA
PTCN eP 22:38:37.11 -1.1 41.2 109 b:4.2+2 .40 6.6 PTCN
MANU eP 22:38:37.82 -0.4 41.2 286 b:4.7+1 1.3 5.1 MANU
COEN eP 22:38:45.04 0.9 41.9 267 b:2.0+1 .25 5.5 COEN
TAU eP 22:38:48.38 -0.1 42.5 224 b:5.3+1 1.3 5.2 TAU
MCQ eP 22:38:56.10 -0.3 43.5 203 b:4.3+2 1.7 6.0 MCQ
STKA eP 22:38:57.54 0.9 43.5 241 b:3.0+0 .75 4.2 STKA
MIDW eP 22:39:05.15 -0.6 44.6 355 b:2.9+2 1.5 5.9 MIDW
BBOO eP 22:39:34.49 0.3 48.3 241 b:8.5+1 1.9 5.4 BBOO
WB2 eP 22:39:44.82 0.3 49.6 258 b:9.7+0 1.0 4.8 WB2
eP 22:39:44.90 0.4
AS01 eP 22:39:45.79 0.2 49.7 253 AS01
AS31 eP 22:39:46.72 0.8 49.8 253 b:1.2+1 .70 5.0 AS31
ANA2 eP 22:40:01.26 -0.6 51.9 307 ANA2
SOEI eP 22:41:05.54 -0.5X 60.9 268 b:5.2+1 1.0 5.6 SOEI
VNDA eP 22:41:13.84 -0.2 62.3 186 b:1.3+1 1.0 4.9 VNDA
PFO eP 22:42:26.98 0.5 73.7 47 b:1.4+1 1.1 4.8 PFO
XPFO eP 22:42:27.84 1.3 73.7 47 b:1.5+1 1.1 4.8 XPFO
TWG eP 22:42:31.66 -3.0 75.1 300 b:1.0+2 .50 6.0 TWG
WAKR ePcP 22:42:38.89 -6.4X 74.5 41 WAKR
PNTR ePcP 22:42:40.37 -6.0X 74.7 41 PNTR
YERR ePcP 22:42:41.02 -6.0X 74.9 41 YERR
HUMO ePcP 22:42:41.37 -5.4X 74.9 36 HUMO
PAHR ePcP 22:42:42.85 -5.6X 75.2 40 PAHR
TPNV ePcP 22:42:45.12 -5.2X 75.7 44 TPNV
KVN ePcP 22:42:45.20 -5.1X 75.7 41 KVN
MOD ePcP 22:42:46.84 -4.9X 76.0 38 MOD
SHPR ePcP 22:42:48.20 -4.3X 76.2 45 SHPR
W13A ePcP 22:42:48.67 -4.5X 76.3 47 W13A
H04A ePcP 22:42:50.12 -4.3X 76.7 35 H04A
BMN ePcP 22:42:52.56 -3.5 77.0 41 BMN
J08A eP 22:42:52.72 2.1 78.0 38 b:1.7+1 1.1 4.9 J08A
SZCU eP 22:42:53.12 1.3 78.1 45 b:3.0+1 1.2 5.1 SZCU
TUC ePcP 22:42:53.49 -3.1 77.1 51 TUC
WVOR ePcP 22:42:54.45 -2.9 77.3 38 WVOR
X16A ePcP 22:42:56.67 -2.4 77.7 48 X16A
LCMT ePcP 22:42:57.15 -2.1 77.7 45 LCMT
319A ePcP 22:42:57.62 -2.0 77.8 52 319A
CCUT ePcP 22:42:58.30 -1.9 77.9 45 CCUT
U15A ePcP 22:42:59.20 -1.8 78.1 46 U15A
LAZ eP 22:43:08.13 1.8 80.8 50 LAZ
epP 22:43:25.81 depth = -0.8X
RND eP 22:43:11.78 0.2 81.9 11 RND
epP 22:43:34.90 depth = 2.8X
YPP eP 22:43:15.27 -3.0 83.1 40 b:4.1+1 1.9 5.0 YPP
TRF ePcP 22:43:16.54 0.4 81.7 10 TRF
MDM eP 22:43:17.15 -2.3 83.5 11 MDM
epP 22:43:38.42 depth = -1.7X
BW06 eP 22:43:17.59 -0.7 83.1 42 b:1.5+1 1.0 4.9 BW06
epP 22:43:38.32 depth = -0.2X
CCB eP 22:43:18.77 0.5 83.3 11 b:1.9+1 1.0 5.0 CCB
ILB eP 22:43:21.06 1.3 83.5 11 ILB
IMAR eP 22:43:23.75 3.9X 83.6 8 IMAR
epP 22:43:42.89 depth = 2.3X
IL1 ePcP 22:43:24.89 1.0 83.5 11 IL1
REDW epP 22:43:39.11 3.3X 82.6 41 REDW
MOOW epP 22:43:40.61 3.4X 82.8 41 MOOW
MLY epP 22:43:42.20 3.9X 83.1 10 MLY
SNAA eP 22:44:01.34 1.7 91.8 177 b:9.7+0 1.1 5.1 SNAA
Generated 2012 JAN 12 at 22:49 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
