Phase Data
21 JAN 2012 ( 21)
ot = 13:24:21.34 +/- 0.99 VANUATU
lat = -16.966 +/- 12.1
lon = 168.010 +/- 12.9 MAGNITUDE 4.5 (GS)
dep = 31.4 +/- 10.9
91 km (56 miles) NNW of PORT-VILA, Efate, Vanuatu (pop 30,000)
182 km (113 miles) SSE of Luganville, Espiritu Santo, Vanuatu
315 km (196 miles) NNW of Isangel, Tanna, Vanuatu
1932 km (1200 miles) NE of BRISBANE, Queensland, Australia
nph = 13 of 16 se = 0.49 FE=186 A
error ellipse = ( 50.0, 17.0, 25.7;175.0, 61.0, 16.1;313.0, 22.0, 10.3)
mb = 4.5 ( 1) ML = 4.5 ( 2) mblg = 3.3 ( 1) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
DZM ePn 13:25:35.02 -3.3 5.3 196 L:5.3-1 .50 4.5 g:5.0-2 .75 3.3 DZM
eSn 13:26:26.76 S res = -11.5X
EIDS ePn 13:28:28.35 0.9 17.8 239 b:3.9+1 1.4 4.3 EIDS
OUZ eP 13:28:39.15 0.3 18.8 166 b:1.2+1 .96 4.1 OUZ
CTAO eP 13:28:59.50 -1.4X 20.9 258 b:2.6+1 1.0 4.6 CTAO
PMG eP 13:29:09.19 0.0 21.6 288 b:3.1+1 1.4 4.5 PMG
BKZ eP 13:29:26.57 -0.5 23.3 163 b:3.4+1 1.3 4.7 BKZ
COEN eP 13:29:35.19 0.6 24.1 274 b:3.1+1 1.5 4.6 COEN
THZ eP 13:29:43.92 0.9 25.1 171 b:5.3+1 1.2 5.0 THZ
KWAJ eP 13:29:48.01 0.0 25.6 359 b:5.1+2 1.2 6.0 KWAJ
STKA eP 13:30:10.99 0.0 28.2 233 b:2.3+0 .95 3.9 STKA
WB2 eP 13:30:44.81 -0.6 32.0 259 b:1.2+1 1.1 4.7 WB2
AS01 eP 13:30:50.30 0.2 32.6 253 AS01
AS31 eP 13:30:50.80 0.3 32.6 253 b:3.8+0 .65 4.4 AS31
KSM eP 13:34:24.61 0.8X 59.8 282 b:6.5+0 .80 4.8 KSM
MDPB eP 13:37:05.55 -0.1 87.3 50 MDPB
Generated 2012 JAN 21 at 13:39 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
