11 APR 2009 (101)
ot = 01:59:47.77 +/- 1.42 NIAS REGION, INDONESIA
lat = 1.144 +/- 6.9
lon = 97.221 +/- 7.4 MAGNITUDE 4.9 (GS)
dep = 37.5 +/- 11.9
185 km (115 miles) WSW of Sibolga, Sumatra, Indonesia
315 km (195 miles) SSW of Medan, Sumatra, Indonesia
545 km (340 miles) WSW of KUALA LUMPUR, Malaysia
1335 km (830 miles) NW of JAKARTA, Java, Indonesia
nph = 58 of 59 se = 0.88 FE=706 A
error ellipse = ( 51.7, 55.1, 21.5;198.0, 30.1, 8.2;297.6, 15.9, 6.3)
mb = 4.9 ( 36) ML = 4.7 ( 2) mblg = 3.9 ( 4) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
IPM ePn 02:01:01.66 -0.2 5.1 48 L:5.1-1 1.6 4.6 g:3.1-1 .90 4.0 IPM
KULM ePn 02:01:04.50 -0.7 5.4 40 L:6.5-1 1.1 4.7 g:2.3-1 .85 3.9 KULM
KSM ePn 02:02:51.31 0.0 13.1 88 g:2.0-2 1.3 3.3 KSM
CHTO ePn 02:03:46.72 -4.1X 17.6 5 b:1.5+1 1.0 4.1 CHTO
CM31 ePn 02:03:47.69 1.3 17.3 6 g:2.5-2 .98 3.8 b:2.5+1 .98 4.3 CM31
KKM eP 02:04:14.12 1.4 19.6 75 b:7.4+1 1.2 4.8 KKM
KAPI eP 02:04:52.64 -0.4 23.3 105 b:2.7+1 1.1 4.7 KAPI
MBWA eP 02:06:03.71 -0.4 31.2 136 b:6.3+0 .77 4.5 MBWA
SSLB eP 02:06:11.53 -0.8 32.2 44 b:4.7+1 1.2 5.2 SSLB
YULB eP 02:06:13.27 1.1 32.2 45 b:4.4+1 1.3 5.2 YULB
FITZ eP 02:06:26.64 -0.6 33.9 126 b:6.2+0 .78 4.6 FITZ
WRAB eP 02:07:35.12 -0.6 42.0 122 b:1.5+1 .80 4.8 WRAB
KBL eP 02:07:39.62 0.7 42.4 325 b:2.8+0 .80 4.0 KBL
FORT eP 02:07:46.14 0.7 43.2 140 b:2.7+1 .76 5.1 FORT
AS31 eP 02:07:46.96 0.3 43.3 127 AS31
JNU eP 02:07:58.54 0.1 44.8 41 b:2.2+1 1.4 4.8 JNU
TKM2 eP 02:08:07.07 0.3 45.9 338 b:2.5+1 1.2 5.0 TKM2
AAK eP 02:08:09.55 1.3 46.1 337 b:1.2+2 1.3 5.7 AAK
EKS2 eP 02:08:10.80 0.2 46.4 336 b:1.3+1 1.0 4.8 EKS2
MK31 eP 02:08:17.42 -0.2 47.3 346 MK31
ULN eP 02:08:17.84 0.0 47.3 9 b:1.6+1 .95 5.0 ULN
COEN eP 02:08:22.67 -0.3 47.9 110 COEN
KKAR eP 02:08:24.24 0.2 48.1 334 b:2.2+1 1.2 5.1 KKAR
TLY eP 02:08:43.83 0.6 50.6 5 b:9.1+0 1.0 4.7 TLY
KURK eP 02:08:52.18 0.0 51.9 345 b:2.4+1 1.0 5.1 KURK
STKA eP 02:09:03.84 0.5 53.3 132 b:2.7+0 .95 4.2 STKA
ZAA0 eP 02:09:04.35 -0.8 53.6 351 ZAA0
BRVK eP 02:09:24.50 -0.6 56.4 341 b:1.3+1 .85 5.0 BRVK
ABKAReP 02:09:32.66 -1.0 57.6 332 b:6.6+0 .65 4.8 ABKA
YSS eP 02:09:53.80 0.6 60.4 34 b:5.9+1 1.2 5.6 YSS
GNI eP 02:09:58.71 -1.5 61.3 316 GNI
ARU eP 02:10:11.80 -0.5 63.2 337 b:1.6+1 1.0 5.1 ARU
KIV eP 02:10:19.06 -1.0 64.4 319 b:1.8+1 1.1 5.1 KIV
YAK eP 02:10:25.13 -1.6 65.5 16 b:1.4+1 .35 5.5 YAK
MALT eP 02:10:26.31 0.8 65.2 312 b:2.5+0 1.0 4.2 MALT
CSS eP 02:10:44.91 0.7 68.1 307 b:1.7+1 1.2 5.0 CSS
BR131eP 02:10:50.77 -0.1 69.2 312 b:1.8+0 .68 4.2 BR13
LSZ eP 02:10:56.77 -0.3 70.1 253 b:1.0+1 1.3 4.7 LSZ
TIXI eP 02:11:13.28 -1.3 73.2 10 b:2.7+1 1.3 5.1 TIXI
KIEV eP 02:11:26.03 -1.1 75.3 322 KIEV
BUR08eP 02:11:38.49 1.0 77.1 319 BUR0
SUW eP 02:11:51.94 0.2 79.7 325 b:2.4+1 .90 5.2 SUW
PSZ eP 02:11:56.82 -0.2 80.7 318 b:8.8+0 1.1 4.7 PSZ
BILL eP 02:11:59.38 0.0 81.2 21 b:5.8+0 1.1 4.5 BILL
MORC eP 02:12:07.06 0.6 82.5 320 b:2.4+0 1.0 4.2 MORC
KEST eP 02:12:33.15 0.5 87.6 306 KEST
TAM eP 02:12:50.08 0.6 91.1 293 b:5.7+0 1.3 4.8 TAM
FFC ePKPdf 02:18:37.70 -0.7 122.1 13 FFC
HLID ePKPdf 02:18:49.42 0.5 127.2 29 HLID
TPAW ePKPdf 02:18:53.03 0.9 128.9 26 TPAW
HWUT ePKPdf 02:18:54.35 0.0 130.1 28 HWUT
DUG ePKPdf 02:18:55.77 0.5 130.6 30 DUG
RSSD ePKPdf 02:18:57.40 1.2 131.1 20 RSSD
ANMO ePKPdf 02:19:10.81 1.8 137.8 29 ANMO
MIAR ePKPdf 02:19:15.55 -2.8 143.1 15 MIAR
WMOK ePKPdf 02:19:16.24 1.1 141.3 21 WMOK
JCT ePKPdf 02:19:20.06 -1.1 144.6 26 JCT
LRAL ePKPbc 02:19:23.39 -0.1 145.8 6 LRAL
HKT ePKPbc 02:19:25.81 -0.4 146.7 21 HKT
Generated 2009 APR 11 at 03:38 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
