Phase Data
7 JAN 2012 ( 7)
ot = 10:15:51.58 +/- 1.60 TONGA
lat = -18.547 +/- 12.4
lon = -174.681 +/- 13.4 MAGNITUDE 4.8 (GS)
dep = 139.7 +/- 5.3
74 km (46 miles) W of Neiafu, Tonga (pop 3,000)
291 km (181 miles) N of NUKU`ALOFA, Tonga
304 km (189 miles) SSW of Hihifo, Tonga
2277 km (1414 miles) NNE of Auckland, New Zealand
nph = 131 of 158 se = 0.79 FE=173 A
error ellipse = (117.0, 6.0, 20.9;208.0, 3.0, 18.5;323.0, 82.0, 7.6)
mb = 4.8 ( 1) ML = 5.3 ( 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 10:17:01.81 -8.3X 5.4 32 L:3.1+0 .75 5.3 AFI
eSn 10:17:50.99 S res = -20.3X
DZM eP 10:19:54.60 2.3 18.0 256 b:3.8+1 .90 4.7 DZM
MXZ eP 10:20:13.91 1.6 19.9 197 b:9.9+2 1.9 5.9 MXZ
URZ eP 10:20:21.71 -1.2 20.9 198 b:1.8+2 .54 5.7 URZ
BKZ eP 10:20:30.99 -2.8 21.9 199 b:4.0+1 .52 5.1 BKZ
eS 10:24:27.00 S res = 0.3
HIZ eP 10:20:34.16 0.9 21.9 203 HIZ
BFZ eP 10:20:48.68 0.9 23.4 198 b:9.9+1 1.4 5.1 BFZ
SNZO eP 10:20:57.95 0.7 24.4 200 b:3.6+1 .90 4.9 SNZO
KHZ eP 10:21:09.15 -0.5 25.8 200 b:2.4+1 .80 4.8 KHZ
THZ eP 10:21:10.97 4.4X 25.4 202 b:2.6+1 .62 4.9 THZ
HNR eP 10:21:12.58 -0.9 26.2 287 b:9.2+1 1.1 5.3 HNR
LTZ eP 10:21:18.82 2.2 26.6 202 b:5.8+1 .62 5.3 LTZ
OXZ eP 10:21:19.46 -2.1 27.1 202 b:4.3+1 .72 5.2 OXZ
FOZ eP 10:21:30.95 0.6 28.1 204 b:4.5+1 .56 5.4 FOZ
RPZ eP 10:21:31.38 3.7X 27.8 203 b:3.3+1 .62 5.2 RPZ
LBZ eP 10:21:36.57 0.9 28.7 203 b:1.0+2 1.9 5.2 LBZ
ODZ eP 10:21:44.83 5.7X 29.1 202 b:1.6+1 .92 4.7 ODZ
EIDS eP 10:22:07.51 -0.8 32.4 252 b:1.6+1 1.3 4.6 EIDS
CTAO eP 10:22:46.31 -0.3 36.8 261 b:4.4+1 .75 5.3 CTAO
PMG eP 10:22:59.17 2.3 38.1 279 b:2.8+1 1.0 5.0 PMG
COEN eP 10:23:17.24 -1.1 40.6 270 b:2.1+1 .85 4.9 COEN
STKA eP 10:23:23.00 -1.8 41.5 243 b:3.9+0 1.2 4.0 STKA
WB2 eP 10:24:15.67 -1.1 48.0 260 WB2
eP 10:24:15.92 -0.8
WRAB eP 10:24:15.92 -0.8 48.0 260 b:5.9+1 1.1 5.3 WRAB
AS01 eP 10:24:16.47 -0.3 48.0 255 AS01
AS31 eP 10:24:16.87 -0.2 48.0 255 b:1.1+1 .75 4.7 AS31
eS 10:31:05.17 S res = 0.3
TARA eS 10:24:47.59 -0.6 23.2 327 TARA
MTN eP 10:24:48.97 -0.4 52.3 268 b:8.4+1 .75 5.6 MTN
FORT eP 10:24:52.76 -1.0 53.0 245 b:3.3+2 .80 6.3 FORT
SOEI eP 10:25:42.85 1.4 59.6 269 b:9.1+1 .80 5.8 SOEI
VNDA eP 10:25:45.35 1.5 60.1 186 b:8.3+0 .80 4.8 VNDA
MBWA eP 10:25:52.04 -1.0 61.3 256 b:1.6+1 .95 5.0 MBWA
CMB eP 10:27:22.89 -0.2 75.9 41 b:5.4+0 1.0 4.2 CMB
AFDM eP 10:27:23.75 -0.3 76.1 40 b:4.7+0 1.0 4.2 AFDM
MDPB eP 10:27:26.37 -0.3 76.5 42 MDPB
epP 10:27:57.24 depth = -3.3X
NV01 eP 10:27:31.45 -0.5 77.5 42 NV01
NV11 eP 10:27:32.45 0.0 77.6 42 b:1.0+0 1.3 3.4 NV11
epP 10:28:00.97 depth = -5.6X
KS01 eP 10:27:33.63 1.3 77.6 317 KS01
epP 10:28:05.09 depth = -1.3X
TPNV eP 10:27:34.82 0.2 78.0 44 b:4.3+0 .95 4.2 TPNV
Y14A eP 10:27:37.97 0.2 78.6 48 b:1.2+1 .80 4.7 Y14A
R11A eP 10:27:41.45 0.2 79.2 43 b:1.3+1 1.9 4.3 R11A
BMN eP 10:27:41.52 -0.5 79.3 41 b:1.1+1 1.3 4.4 BMN
TUC eP 10:27:42.29 0.2 79.3 51 b:4.5+0 .90 4.2 TUC
WVOR eP 10:27:43.59 -0.1 79.7 39 b:6.4+0 1.1 4.3 WVOR
LCMT eP 10:27:45.35 -0.4 80.0 46 b:6.6+0 1.3 4.2 LCMT
X16A eP 10:27:46.00 0.7 79.9 49 b:4.4+0 .95 4.2 X16A
epP 10:28:14.55 depth = -5.1X
CCUT eP 10:27:46.19 -0.8 80.2 45 b:4.0+0 1.1 4.1 CCUT
J08A eP 10:27:46.35 -0.8 80.3 38 b:6.6+0 1.1 4.3 J08A
OHAK ePcP 10:27:48.55 7.2X 77.6 12 OHAK
G08A eP 10:27:51.62 -0.2 81.2 36 b:6.4+0 1.1 4.3 G08A
epP 10:28:23.47 depth = -2.8X
X18A eP 10:27:51.82 0.5 81.0 49 b:1.1+1 1.4 4.4 X18A
BMO eP 10:27:53.97 -1.4 81.9 37 b:6.1+0 1.3 4.2 BMO
F10A eP 10:27:58.32 -0.7 82.6 36 F10A
epP 10:28:30.20 depth = -3.4X
HLID eP 10:27:59.52 -1.0 82.8 40 b:7.6+0 1.2 4.4 HLID
epP 10:28:31.57 depth = -3.4X
TMUT eP 10:28:00.28 0.8 82.6 45 b:6.0+0 .72 4.5 TMUT
HVU eP 10:28:00.53 -0.2 82.9 42 b:6.8+0 1.3 4.3 HVU
MNTX eP 10:28:01.25 -0.6 83.1 54 b:6.6+0 1.1 4.4 MNTX
SRU eP 10:28:01.43 0.3 82.9 45 b:9.7+0 .76 4.7 SRU
P17A eP 10:28:01.64 0.3 83.0 45 b:1.7+1 .70 5.0 P17A
P18A eP 10:28:03.03 -0.6 83.4 45 b:1.1+2 .34 6.1 P18A
DCM eP 10:28:03.44 0.9 83.2 44 DCM
TCUT eP 10:28:03.69 0.2 83.4 43 b:1.5+1 .94 4.8 TCUT
TX31 eP 10:28:03.80 0.4 83.3 56 TX31
eP 10:28:04.32 0.8
epP 10:28:33.20 depth = -4.8X
TRF eP 10:28:04.67 -1.0 83.9 11 b:5.8+1 1.9 5.1 TRF
ARGU eP 10:28:04.96 1.9 83.3 44 ARGU
PV09 eP 10:28:04.97 0.4 83.6 46 PV09
PV01 eP 10:28:05.44 -0.1 83.8 47 PV01
ANMO eP 10:28:05.51 0.1 83.8 50 b:7.2+0 1.2 4.4 ANMO
MCK eP 10:28:06.19 -1.8 84.4 11 b:1.2+1 .92 4.8 MCK
RND eP 10:28:06.78 0.2 84.2 11 b:1.4+1 1.1 4.7 RND
MCMT eP 10:28:09.00 0.1 84.5 39 MCMT
epP 10:28:41.12 depth = -2.3X
DLMT eP 10:28:10.61 -0.3 84.9 39 b:1.1+1 1.4 4.5 DLMT
REDW eP 10:28:11.06 -0.1 84.9 41 REDW
epP 10:28:41.96 depth = -3.7X
S22A eP 10:28:11.30 0.5 84.8 48 b:5.7+0 .95 4.4 S22A
LNIG eP 10:28:11.33 -0.3 85.0 62 b:9.9+0 1.0 4.6 LNIG
FXWY eP 10:28:11.48 0.2 84.9 41 b:9.5+0 1.5 4.4 FXWY
epP 10:28:43.29 depth = -2.6X
SNOW eP 10:28:11.74 0.0 85.0 41 b:7.7+0 1.0 4.5 SNOW
epP 10:28:42.36 depth = -3.9X
IMW eP 10:28:11.88 -0.4 85.1 41 IMW
epP 10:28:44.38 depth = -2.4X
DOT eP 10:28:12.29 -0.2 85.3 13 b:2.7+1 .92 5.1 DOT
PDAR eP 10:28:12.39 -1.3 85.4 42 PDAR
epP 10:28:43.04 depth = -5.2X
HDA eP 10:28:12.42 -0.5 85.4 12 b:1.4+1 .76 4.9 HDA
CCB eP 10:28:12.52 -0.6 85.5 11 b:1.6+1 .76 4.9 CCB
ILB eP 10:28:12.93 -1.6 85.8 12 ILB
PD31 eP 10:28:12.95 -0.7 85.4 42 PD31
epP 10:28:44.02 depth = -4.3X
IL1 eP 10:28:13.34 -1.2 85.8 12 IL1
MDM eP 10:28:13.49 -0.7 85.7 11 b:2.5+1 1.2 4.9 MDM
COLA eP 10:28:13.56 -0.5 85.7 11 b:2.9+1 .85 5.2 COLA
IMAR eP 10:28:14.14 -0.3 85.8 8 IMAR
BOZ eP 10:28:14.37 -0.2 85.6 39 BOZ
epP 10:28:45.02 depth = -4.3X
YHH eP 10:28:16.02 1.2 85.6 40 YHH
epP 10:28:47.37 depth = -2.0X
IPM eP 10:28:16.17 -0.9 86.0 276 b:2.2+1 .90 5.0 IPM
MSTX eP 10:28:16.71 -0.1 86.0 52 b:1.5+1 1.0 4.8 MSTX
DAWY eP 10:28:19.75 0.2 86.8 15 b:8.7+0 .80 4.7 DAWY
EGAK eP 10:28:20.42 0.1 87.0 14 b:6.9+0 .90 4.6 EGAK
JCT eP 10:28:20.63 -0.4 86.9 57 b:8.8+0 1.1 4.6 JCT
COLD eP 10:28:23.04 0.4 87.4 9 b:5.0+0 1.0 4.4 COLD
PSI eP 10:28:24.66 0.6 87.4 274 b:1.6+1 .90 5.0 PSI
ABTX eP 10:28:25.15 -0.5 87.9 55 b:2.2+1 .90 5.2 ABTX
epP 10:28:55.56 depth = -5.1X
SNAA eP 10:28:33.26 -1.0 89.8 177 b:1.1+1 1.0 4.9 SNAA
INK eP 10:28:41.70 -0.4 91.6 14 b:1.2+1 1.3 4.9 INK
PEL eP 10:28:41.89 0.7 91.2 126 b:1.6+1 1.1 5.1 PEL
W36A eP 10:28:42.47 0.2 91.5 54 b:1.5+1 1.2 5.0 W36A
TPAW epP 10:28:43.29 -2.4X 84.9 41 TPAW
YHB epP 10:28:45.26 -3.0X 85.4 40 YHB
LCO eP 10:28:48.02 -0.9 92.8 122 b:1.3+1 .90 5.2 LCO
BRVK ePKPdf 10:34:24.03 -0.6 119.6 321 BRVK
KKAR ePKPdf 10:34:25.47 -1.1 120.5 309 KKAR
ARU ePKPdf 10:34:35.52 0.0 125.3 327 ARU
ABKARePKPdf 10:34:38.14 -0.4 126.8 318 ABKA
AK11 ePKPpre 10:35:04.30 1.3X 142.7 335 AK11
MARD ePKPdf 10:35:09.30 -1.4 143.8 308 MARD
OJC ePKPdf 10:35:16.37 1.9 146.3 343 OJC
CLL ePKPbc 10:35:17.47 0.5 146.7 351 CLL
BR231ePKPdf 10:35:17.58 -0.5 148.2 317 BR23
ePKPbc 10:35:21.51 0.0
BUR04ePKPbc 10:35:18.16 0.9 146.8 335 BUR0
BUR08ePKPbc 10:35:18.54 1.3 146.7 335 BUR0
MORC ePKPbc 10:35:19.19 0.4 147.3 345 MORC
BR131ePKPbc 10:35:20.72 0.5 147.7 317 BR13
PSZ ePKPbc 10:35:21.64 0.0 148.4 341 PSZ
ANTO ePKPbc 10:35:22.47 1.1 148.2 317 ANTO
GEA0 ePKPbc 10:35:23.32 0.1 149.0 349 GEA0
KHC ePKPbc 10:35:23.36 0.8 148.8 349 KHC
ePKPab 10:35:27.02 0.4
GEC2 ePKPbc 10:35:23.79 0.5 149.0 349 GEC2
WLF ePKPbc 10:35:23.96 1.1 148.9 359 WLF
BFO ePKPbc 10:35:26.30 0.3 150.2 356 BFO
DIVS ePKPbc 10:35:30.31 0.5 151.7 337 DIVS
ePKPab 10:35:39.52 0.5
FUORNePKPbc 10:35:30.37 0.4 151.7 353 FUOR
SENINePKPbc 10:35:31.74 0.7 152.2 357 SENI
ES19 ePKPdf 10:35:31.76 0.3 157.5 19 ES19
ePKPab 10:36:04.22 0.6
TOA0 ePKPdf 10:35:44.22 -1.0 173.6 148 TOA0
ePKPab 10:37:15.17 0.1
Generated 2012 JAN 7 at 10:49 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
