Phase Data
18 MAY 2011 (138)
ot = 08:10:14.03 +/- 2.86 TONGA
lat = -15.592 +/- 10.6
lon = -175.544 +/- 16.0 MAGNITUDE 4.9 (GS)
dep = 47.9 +/- 5.7
196 km (122 miles) WNW of Hihifo, Tonga
263 km (163 miles) SSE of MATA'UTU, Ile Uvea, Wallis and Futuna
614 km (381 miles) N of NUKU`ALOFA, Tonga
2543 km (1579 miles) NNE of Auckland, New Zealand
nph = 74 of 77 se = 1.41 FE=173 A
error ellipse = (107.0, 5.0, 25.1;199.0, 15.0, 15.6;357.0, 73.0, 7.6)
mb = 4.9 ( 45) ML = 0.0 ( 0) mblg = 2.8 ( 1) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
MSVF ePn 08:11:52.44 5.2 6.5 250 g:1.0-2 1.1 2.8 MSVF
URZ eP 08:15:19.25 -0.4 23.5 195 b:3.8+1 1.0 4.8 URZ
RAR eSn 08:16:33.37 -18.4 16.0 113 RAR
STKA eP 08:18:03.07 1.0 42.1 240 b:1.5+1 1.6 4.5 STKA
WRAB eP 08:18:48.29 1.4 47.8 257 b:4.3+1 1.7 5.2 WRAB
AS01 eP 08:18:48.74 -0.3 48.0 252 AS01
AS31 eP 08:18:50.00 0.7 48.1 252 b:2.3+0 .85 4.2 AS31
FITZ eP 08:19:51.96 2.7 56.1 258 b:5.7+1 1.7 5.3 FITZ
VNDA eP 08:20:35.52 0.1 63.0 185 b:2.5+1 1.0 5.3 VNDA
SBA eP 08:20:36.07 1.2 62.9 184 b:3.1+1 .95 5.4 SBA
CASY eP 08:21:15.57 -0.9 69.4 205 b:1.8+1 1.0 4.9 CASY
MYLDMepP 08:21:27.01 2.1 68.5 282 MYLD
NV01 eP 08:21:54.80 -1.0 75.9 43 NV01
NV11 eP 08:21:56.45 0.2 76.0 43 b:1.6+1 1.3 4.8 NV11
Y14A eP 08:22:03.45 0.0 77.2 49 b:2.0+1 1.1 5.1 Y14A
SHPR ePcP 08:22:09.83 -3.1 77.0 46 SHPR
X16A eP 08:22:10.97 -0.2 78.6 49 b:7.8+0 1.1 4.6 X16A
PSUT eP 08:22:15.67 2.9 78.9 45 b:4.8+0 1.0 4.4 PSUT
TT01 eP 08:22:15.99 -0.4 79.7 9 TT01
TTA eP 08:22:16.04 -0.6 79.8 9 b:2.4+1 1.4 4.9 TTA
DIV eP 08:22:17.64 -0.8 80.1 14 b:1.2+1 .92 4.8 DIV
BMRM eP 08:22:18.64 -0.5 80.2 15 b:6.2+1 1.8 5.2 BMRM
TUC epP 08:22:21.06 -0.6 78.1 52 TUC
TNA eP 08:22:24.49 0.7 81.1 3 b:1.6+1 .96 4.9 TNA
RND eP 08:22:25.84 0.2 81.4 12 b:2.1+1 1.4 4.9 RND
MCK eP 08:22:26.34 -0.7 81.7 12 b:2.7+1 1.4 5.0 MCK
TMUT eP 08:22:28.27 3.7 81.1 45 b:9.4+0 1.1 4.6 TMUT
HLID eP 08:22:28.50 4.0 81.1 40 b:5.0+0 1.1 4.4 HLID
MNTX eP 08:22:28.57 -0.8 82.0 54 MNTX
epP 08:22:41.32 depth = -1.4
TX31 eP 08:22:29.85 -1.8 82.4 57 TX31
eP 08:22:31.00 -0.8
epP 08:22:44.25 depth = -0.6
MLY eP 08:22:30.42 -1.1 82.6 10 b:8.0+0 1.2 4.6 MLY
WRH eP 08:22:30.60 -0.8 82.5 12 b:2.0+1 1.3 5.0 WRH
CCB eP 08:22:31.10 -1.3 82.8 12 b:4.2+1 2.0 5.1 CCB
ANMO eP 08:22:31.69 -0.5 82.5 51 b:1.5+1 1.4 4.8 ANMO
IL1 eP 08:22:32.09 -1.9 83.1 12 IL1
ILB eP 08:22:33.72 -0.3 83.1 12 ILB
MCMT eP 08:22:35.31 2.3 82.7 40 MCMT
REDW eP 08:22:35.61 -0.2 83.2 42 b:1.5+1 1.3 4.8 REDW
BW06 eP 08:22:35.88 -2.8 83.8 43 b:5.5+0 1.1 4.5 BW06
eP 08:22:36.24 -2.4
DLMT eP 08:22:36.18 1.1 83.1 39 b:2.3+1 1.7 4.9 DLMT
SNOW eP 08:22:36.96 0.6 83.4 42 b:1.3+1 1.3 4.8 SNOW
S22A eP 08:22:37.00 0.0 83.4 48 b:1.5+1 1.3 4.8 S22A
PD31 eP 08:22:37.00 -1.7 83.8 43 PD31
IMW eP 08:22:38.00 1.1 83.4 41 b:1.2+1 1.4 4.8 IMW
DAWY eP 08:22:38.92 -0.7 84.1 15 b:2.0+1 1.5 4.9 DAWY
EGAK eP 08:22:39.66 -0.7 84.3 14 b:1.1+1 1.3 4.8 EGAK
BOZ eP 08:22:39.70 0.9 83.9 39 b:1.7+1 1.6 4.9 BOZ
SMCO eP 08:22:39.99 0.3 83.9 47 b:4.7+0 .90 4.5 SMCO
BILL eP 08:22:40.18 -0.9 84.5 353 b:7.3+0 1.0 4.7 BILL
YMR eP 08:22:40.41 1.8 83.8 41 b:2.8+1 1.5 5.1 YMR
FLWY eP 08:22:40.46 2.4 83.7 41 b:2.7+1 1.6 5.0 FLWY
COLD eP 08:22:42.20 0.0 84.7 10 b:1.3+1 1.1 4.9 COLD
H17A eP 08:22:42.34 3.1 83.9 41 b:9.9+0 1.4 4.7 H17A
SRU epP 08:22:42.47 2.9 81.4 46 SRU
LKWY eP 08:22:42.58 2.4 84.1 41 b:7.7+0 1.1 4.7 LKWY
RLMT eP 08:22:46.59 1.5 85.1 41 b:1.0+1 1.4 4.8 RLMT
MOOW epP 08:22:48.75 -1.4 83.5 41 MOOW
SDCO epP 08:22:56.20 1.3X 84.4 49 SDCO
MSTX epP 08:22:59.11 1.5X 84.9 53 MSTX
LAO eP 08:23:01.40 3.8 87.7 40 b:2.2+1 1.5 5.2 LAO
YKB5 eP 08:23:11.74 -1.4 91.1 24 YKB5
SNAA eP 08:23:19.50 -1.7 92.8 178 b:1.9+1 1.5 5.3 SNAA
TIXI eP 08:23:23.61 -5.6X 94.6 345 b:2.9+0 .60 4.9 TIXI
BR131ePKPbc 08:29:46.00 0.2 145.0 319 BR13
MLR ePKPbc 08:29:46.43 0.3 145.1 333 MLR
BR231ePKPdf 08:29:46.74 -0.5 145.4 320 BR23
GEA0 ePKPdf 08:29:47.30 -0.6 146.0 349 GEA0
KHC ePKPdf 08:29:47.75 0.4 145.7 349 KHC
GEC2 ePKPdf 08:29:48.31 0.4 146.0 349 GEC2
BFO ePKPdf 08:29:51.59 1.8 147.2 355 BFO
TUE ePKPdf 08:29:55.61 2.6 148.9 353 TUE
ePKPab 08:30:02.98 1.9
FUORNePKPbc 08:29:56.42 0.0 148.7 352 FUOR
Generated 2011 MAY 18 at 08:46 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
