Phase Data
22 MAR 2009 ( 81)
ot = 11:48:29.10 +/- 0.37 TONGA REGION
lat = -22.800 +/- 9.9
lon = -174.874 +/- 10.2 MAGNITUDE 4.9 (GS)
dep = 35.0 (geophysicist)
185 km (115 miles) SSE of NUKU'ALOFA, Tonga
460 km (285 miles) ESE of Ndoi Island, Fiji
470 km (290 miles) SSW of Neiafu, Tonga
1845 km (1150 miles) NE of Auckland, New Zealand
nph = 29 of 33 se = 1.14 FE=174 B
error ellipse = (132.2, 0.0, 15.1; 42.2, 0.0, 10.9; 0.0, 0.0, 0.0)
mb = 4.6 ( 18) ML = 0.0 ( 0) mblg = 3.8 ( 3) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
MSVF ePn 11:50:30.33 2.7 8.3 306 g:1.0-2 .95 2.9 MSVF
AFI ePn 11:50:33.38 -7.7X 9.3 19 d:7.1+1 6.5X L:1.1-1 1.0 4.7X AFI
g:1.0-1 1.0 3.9 b:1.0+2 1.0 5.9X
RAR ePn 11:51:38.63 -7.7X 14.1 86 g:6.6-2 .95 4.0 b:6.6+1 .95 5.3X RAR
URZ eP 11:52:22.97 0.5 16.9 202 b:7.9+1 1.5 4.6 URZ
STKA eP 11:55:54.42 -2.0 39.5 247 b:4.5+0 1.6 4.0 STKA
AS31 eP 11:56:52.99 -3.2X 46.9 258 AS31
WRAB eP 11:56:55.05 -3.7X 47.2 263 b:3.2+0 .70 4.4 WRAB
FORT eP 11:57:28.09 -0.4 51.1 248 b:1.0+1 .58 5.0 FORT
FITZ eP 11:58:00.18 -1.7 55.6 263 b:1.6+0 .60 4.2 FITZ
VNDA eP 11:58:05.07 2.0 55.9 186 b:4.2+0 .91 4.5 VNDA
QSPA eP 11:59:20.81 0.7 67.3 180 b:1.4+1 1.0 5.0 QSPA
ISA eP 12:00:29.68 0.5 78.9 44 b:7.6+0 1.2 4.6 ISA
CMB eP 12:00:30.44 -0.3 79.2 41 b:6.9+0 .99 4.6 CMB
GSC eP 12:00:33.98 0.1 79.8 45 b:6.6+0 1.1 4.5 GSC
CCUT eP 12:00:52.86 0.0 83.3 45 b:6.2+0 1.2 4.6 CCUT
ELK eP 12:00:56.10 -0.2 84.0 41 ELK
SNAA eP 12:01:03.08 -0.6 85.6 177 b:7.2+0 .90 4.9 SNAA
LAZ eP 12:01:05.65 0.1 85.8 50 b:8.1+0 1.6 4.7 LAZ
SRU eP 12:01:07.55 1.1 86.1 45 b:6.0+0 1.0 4.7 SRU
LPM eP 12:01:07.86 0.8 86.2 50 b:5.3+0 1.4 4.6 LPM
ANMO eP 12:01:09.21 -0.1 86.6 50 b:6.2+0 1.1 4.8 ANMO
GDL2 eP 12:01:10.00 0.1 86.8 53 GDL2
TRF eP 12:01:13.39 -2.4 88.1 11 b:1.4+2 2.6 5.8X TRF
COLA eP 12:01:22.70 -1.0 89.9 11 b:4.3+0 .83 4.8 COLA
CHTO eP 12:01:43.23 0.4 93.7 289 b:2.7+0 1.0 4.6 CHTO
KIEV ePKPdf 12:08:04.39 -0.5 146.4 332 KIEV
SUW ePKPdf 12:08:04.47 0.5 146.0 341 SUW
AK01 ePKPdf 12:08:04.68 -0.2 146.4 332 AK01
AK02 ePKPdf 12:08:04.91 0.0 146.5 332 AK02
MALT ePKPdf 12:08:09.17 1.7 147.6 306 MALT
BR131ePKPbc 12:08:16.45 -1.1 150.5 312 BR13
BUR08ePKPbc 12:08:16.77 -0.3 150.5 332 BUR0
MORC ePKPbc 12:08:18.62 -0.4 151.4 343 MORC
Generated 2009 MAR 22 at 12:43 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
