Phase Data
20 MAY 2011 (140)
ot = 20:13:42.25 +/- 2.20 NIAS REGION, INDONESIA
lat = 0.322 +/- 10.1
lon = 98.480 +/- 8.9 MAGNITUDE 4.5 (GS)
dep = 60.1 +/- 9.5
146 km (91 miles) SW of Padangsidempuan, Sumatra, Indonesia (pop 178,000)
160 km (100 miles) SSW of Sibolga, Sumatra, Indonesia (pop 90,000)
476 km (296 miles) SW of KUALA LUMPUR, Malaysia
1172 km (728 miles) NW of JAKARTA, Java, Indonesia
nph = 38 of 39 se = 1.08 FE=706 A
error ellipse = (220.0, 10.0, 20.1; 78.0, 76.0, 14.3;312.0, 8.0, 5.3)
mb = 4.5 ( 14) 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
GSI ePn 20:14:04.04 -0.6 1.3 317 GSI
PSI ePn 20:14:18.57 -0.7 2.4 11 PSI
BKNI ePn 20:14:22.21 0.9 2.6 90 BKNI
LHMI ePn 20:14:56.66 0.4 5.1 343 LHMI
KULM ePn 20:15:00.02 -0.1 5.4 24 KULM
MYKOMePn 20:15:03.03 0.5 5.6 75 MYKO
CISI ePn 20:16:29.83 -3.0 12.2 130 CISI
COCO ePn 20:16:37.38 -0.5 12.5 187 COCO
SBUM ePn 20:16:59.65 3.3 13.9 81 SBUM
UGM ePn 20:17:02.30 -2.4 14.5 125 UGM
JAGI eP 20:17:45.64 -1.4 17.9 120 b:6.1+1 1.3 4.6 JAGI
CM31 eP 20:17:46.81 -1.7 18.0 1 CM31
CM01 eP 20:17:47.48 -0.6 18.0 2 CM01
CHTO eP 20:17:52.02 -0.4 18.4 1 b:2.7+0 .65 3.6 CHTO
KKM eP 20:17:54.03 -0.8 18.6 72 b:1.8+1 .80 4.3 KKM
MYLDMeP 20:18:18.94 2.7 20.6 76 b:1.2+1 .80 4.3 MYLD
LSA eP 20:19:47.08 0.8 30.0 347 b:6.2+0 .95 4.3 LSA
ENH eP 20:19:57.00 -2.3 31.6 18 b:6.7+0 .45 4.7 ENH
AS01 eP 20:21:27.17 0.1 41.9 127 AS01
BJT eP 20:21:35.16 2.1 42.7 20 b:2.0+1 .70 5.0 BJT
TKM2 eP 20:22:10.05 1.4 47.1 337 b:5.5+0 1.0 4.4 TKM2
ULN eP 20:22:13.96 -0.9 47.9 8 b:3.9+1 1.6 5.2 ULN
SONA1eP 20:22:15.80 1.7 47.8 7 SONA
MK01 eP 20:22:18.26 0.1 48.4 345 MK01
MKAR eP 20:22:18.52 0.2 48.4 345 MKAR
MK31 eP 20:22:18.52 0.2 48.4 345 MK31
MAKZ eP 20:22:19.65 0.6 48.5 345 b:6.9+0 1.2 4.5 MAKZ
ZAA0 eP 20:23:04.94 0.3 54.6 350 ZAA0
eP 20:23:07.35 2.7
ZRNK eP 20:23:27.82 -0.3 57.9 339 b:5.5+0 .90 4.7 ZRNK
ABKAReP 20:23:34.48 -0.5 58.9 332 ABKA
KMBO eP 20:23:54.70 2.7 61.2 269 b:4.1+0 1.0 4.5 KMBO
BR131eP 20:24:51.26 -0.6 70.6 312 BR13
BR231eP 20:24:51.71 -4.2 71.3 312 BR23
TIXI eP 20:25:09.15 -0.8 73.8 10 TIXI
ePcP 20:25:09.55 -15.6X
MLR eP 20:25:32.33 0.1 77.6 317 b:6.3+0 .90 4.6 MLR
BUR08eP 20:25:38.40 1.0 78.5 319 BUR0
GEA0 eP 20:26:18.47 0.6 86.3 319 GEA0
Generated 2011 MAY 20 at 21:57 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
