4 JUL 2007 (185)
ot = 23:54:05.74 +/- 1.71 TONGA
lat = -21.043 +/- 13.3
lon = -173.125 +/- 14.2
dep = 37.8 +/- 16.4
220 km (135 miles) E of NUKU'ALOFA, Tonga
280 km (175 miles) SSE of Neiafu, Tonga
405 km (255 miles) WSW of Niue Island
2115 km (1310 miles) NE of Auckland, New Zealand
nph = 18 of 19 se = 1.39 FE=173 B
error ellipse = (322.4, 55.5, 26.0;123.4, 33.0, 24.5;219.2, 8.9, 16.5)
mb = 4.6 ( 7) ML = 0.0 ( 0) 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 qPn 23:55:48.47 -0.3 7.2 10 AFI
RAO qPn 23:56:17.11 0.4 9.3 207 RAO
CTAO eP 00:01:20.28 0.1 38.0 264 b:1.8+1 .36 5.3X CTAO
CTA iPd 00:01:20.30 0.1 38.0 264 b:1.4+1 .30 5.3X CTA
TAU qP 00:01:31.92 -1.0 39.5 227 TAU
STKA eP 00:01:49.00 -1.9 41.7 245 b:5.6+0 1.2 4.2 STKA
ASAR P 00:02:46.95 -0.8 48.8 256 ASAR
WRA P 00:02:48.53 -0.8 49.0 261 WRA
WRAB eP 00:02:48.72 -0.6 49.0 261 b:5.2+0 .65 4.7 WRAB
WB2 eP 00:02:48.84 -0.4 49.0 261 WB2
KAKA eP 00:03:18.00 2.2 52.5 270 b:4.9+0 .40 4.8 KAKA
FITZ eP 00:03:53.42 2.1 57.5 261 b:4.7+0 .55 4.8 FITZ
KLBR eP 00:04:23.20 1.1 62.0 245 b:7.5+1 1.7 5.5X KLBR
MBWA eP 00:04:24.92 1.2 62.2 257 b:4.6+0 .51 4.9 MBWA
MAW eP 00:06:22.99 -1.4 82.6 199 b:1.8+0 .42 4.5 MAW
PAYG qP 00:06:27.40 -0.7 83.1 88 PAYG
LVC eP 00:07:24.33 2.1 94.3 116 b:9.7-1 .55 4.4 LVC
CPUP qPdif 00:07:55.62 -0.6X 102.0 124 CPUP
BRVK qPKPdf 00:12:55.59 -1.2 122.5 320 BRVK
Generated 2007 JUL 18 at 21:31 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
