9 APR 2009 ( 99)
ot = 18:49:08.91 +/- 0.40 SAMOA ISLANDS REGION
lat = -15.765 +/- 12.5
lon = -172.772 +/- 14.2 MAGNITUDE 4.6 (GS)
dep = 35.0 (geophysicist)
105 km (65 miles) E of Hihifo, Tonga (pop 2,000)
245 km (150 miles) SSW of APIA, Samoa
650 km (405 miles) NNE of NUKU'ALOFA, Tonga
2640 km (1640 miles) NNE of Auckland, New Zealand
nph = 28 of 43 se = 1.12 FE=169 B
error ellipse = (129.9, 0.0, 23.0;219.9, 0.0, 9.3; 0.0, 0.0, 0.0)
mb = 4.6 ( 21) ML = 0.0 ( 0) mblg = 4.2 ( 5) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
MSVF qP 18:51:20.51 3.9X 9.0 256 d:9.6+1 6.6X L:5.5-2 .85 4.3X MSVF
g:3.9-2 .85 3.6 b:3.9+1 .85 5.6X
RAR eP 18:52:08.79 -8.8X 13.5 116 g:5.3-2 .85 4.0 b:4.5+1 .60 5.6X RAR
OUZ eP 18:54:09.16 -0.5 22.9 210 g:5.0-2 .98 4.3 b:3.5+1 .80 4.9 OUZ
URZ eP 18:54:20.05 -1.4 24.1 200 g:4.2-2 .80 4.3 b:4.9+1 .56 5.2 URZ
KHZ qP 18:55:07.03 1.3 29.0 201 g:3.4-2 .74 4.4 b:3.4+1 .74 5.1 KHZ
ARMA eP 18:56:03.26 -0.9 35.7 240 b:2.0+1 .83 5.1 ARMA
STKA eP 18:57:15.77 -0.5 44.4 240 b:4.2+0 .78 4.3 STKA
BBOO eP 18:57:52.90 -0.7 49.2 240 b:1.3+2 .60 6.1X BBOO
WRAB eP 18:58:01.99 -0.8 50.3 257 b:6.6+0 .85 4.7 WRAB
AS31 eP 18:58:04.09 -0.5 50.6 252 AS31
FITZ P 18:59:04.86 1.2 58.7 258 b:2.1+0 .60 4.4 FITZ
SBA P 18:59:31.83 0.5 62.9 185 b:1.0+1 .85 5.0 SBA
ARUT P 19:00:51.60 -7.1X 77.0 44 b:3.5+0 .58 4.6 ARUT
KSM eP 19:01:03.23 -0.2 77.8 275 b:3.6+1 1.1 5.3 KSM
e 19:01:18.73 0.3X
MSU e 19:01:06.39 0.8 78.3 44 b:7.5+0 1.4 4.5 MSU
HLID eP 19:01:11.87 -0.5 79.5 39 b:5.3+0 1.4 4.3 HLID
TRF P 19:01:18.00 -1.2 80.9 10 b:4.9+0 .66 4.6 TRF
MCMT eP 19:01:20.42 -0.8 81.2 39 b:3.3+0 1.1 4.2 MCMT
epP 19:01:31.93 depth = 37.6X
e 19:01:42.96 6.7X
TNA eP 19:01:21.76 1.4 81.2 2 b:2.4+0 .46 4.5 TNA
BSMT P 19:01:23.54 -0.4 81.7 35 b:5.5+0 1.3 4.4 BSMT
e 19:01:35.50 depth = 39.5X
CHMT P 19:01:23.80 -2.1 82.1 37 b:1.5+0 1.0 4.0 CHMT
IMW eP 19:01:24.58 -0.3 81.8 40 b:3.9+0 1.1 4.3 IMW
SMCO P 19:01:26.71 0.1 82.1 46 b:1.1+1 1.2 4.8 SMCO
e 19:01:38.91 depth = 40.4X
e 19:01:48.26 6.6X
COLA P 19:01:26.94 -1.1 82.6 10 b:8.3+0 .80 4.9 COLA
BOZ P 19:01:27.22 0.0 82.3 38 b:7.7+0 1.5 4.5 BOZ
e 19:01:38.75 depth = 37.6X
e 19:01:47.50 5.2X
AAK P 19:07:53.41 2.6 117.2 310 AAK
KWP ePKPpre 19:08:37.46 -3.2X 144.0 343 KWP
BUR08P 19:08:42.17 -0.4 144.9 339 BUR0
MALT P 19:08:42.22 0.0 144.5 315 MALT
e 19:08:53.42 -0.3X
KHC P 19:08:46.04 1.2 146.3 352 KHC
e 19:08:58.99 0.9X
KMBO e 19:08:46.61 1.2 145.9 243 KMBO
e 19:09:00.76 2.9X
BR131P 19:08:48.07 2.0 146.8 321 BR13
Generated 2009 APR 9 at 20:17 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
