Phase Data
20 FEB 2011 ( 51)
ot = 14:32:24.89 +/- 0.55 NIAS REGION, INDONESIA
lat = 1.360 +/- 3.5
lon = 97.201 +/- 3.5 MAGNITUDE 5.3 (GS)
dep = 40.3 +/- 4.7
180 km (110 miles) WSW of Sibolga, Sumatra, Indonesia
230 km (145 miles) W of Padangsidempuan, Sumatra, Indonesia
540 km (335 miles) WSW of KUALA LUMPUR, Malaysia
1350 km (840 miles) NW of JAKARTA, Java, Indonesia
nph = 107 of 121 se = 0.77 FE=706 A
error ellipse = ( 57.1, 52.2, 8.5;185.8, 25.8, 4.9;289.2, 25.5, 3.6)
mb = 5.3 ( 52) ML = 4.7 ( 6) mblg = 4.3 ( 8) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
GSI eP 14:32:33.49 -0.6 0.4 98 L:8.6+1 .85 4.1 GSI
PSI ePn 14:32:59.43 0.7 2.2 52 L:3.1+0 .95 4.2 g:2.6+0 1.2 4.4 PSI
LHMI ePn 14:33:21.75 0.1 3.9 356 L:5.6+0 .80 5.3 g:1.9+0 .75 4.7 LHMI
BKNI ePn 14:33:23.62 0.3 4.0 105 L:9.1+0 .85 5.5 g:1.3+0 .80 4.5 BKNI
IPM ePn 14:33:37.80 0.6 5.0 50 L:6.2-1 .85 4.6 g:4.0-1 .95 4.1 IPM
KULM ePn 14:33:40.83 0.5 5.2 41 L:7.8-1 1.0 4.8 g:2.1-1 .75 3.9 KULM
MYKOMePn 14:34:01.21 0.9 6.7 86 L:3.9-1 .95 4.8X g:1.1-1 .90 3.8 MYKO
MNAI ePn 14:34:19.15 -0.7 8.1 135 L:8.5-1 1.2 5.3X MNAI
KSM ePn 14:35:30.87 2.3 13.1 89 KSM
SBUM ePn 14:35:56.17 1.3 15.0 86 b:6.4+1 .90 4.9 SBUM
CM01 ePn 14:36:18.52 -1.8 17.0 6 CM01
ePcP 14:41:05.39 0.9X
eScP 14:44:37.94 1.5X
CM31 ePn 14:36:19.22 -1.6 17.1 6 CM31
CHTO ePn 14:36:23.45 -1.7 17.4 6 b:4.3+1 .80 4.6 CHTO
PALK ePn 14:36:25.34 -0.3 17.5 290 b:5.3+1 1.1 4.6 PALK
KKM ePn 14:36:49.87 -1.0 19.5 76 b:1.5+2 1.2 5.2 KKM
QIZ eP 14:37:09.56 -0.8 21.5 34 g:4.6-2 .75 4.3 b:4.6+1 .75 5.0 QIZ
MYLDMeP 14:37:11.93 0.4 21.6 79 b:1.2+2 .90 5.3 MYLD
KAPI eP 14:37:29.45 -1.2 23.4 106 b:5.0+1 1.0 4.9 KAPI
LUWI eP 14:37:50.24 -1.2 25.7 95 b:2.4+2 .90 5.8 LUWI
SOEI eP 14:38:19.25 -3.2X 29.1 113 b:1.0+2 1.0 5.5 SOEI
LSA eP 14:38:19.88 0.4 28.8 349 g:6.1-2 .80 4.6 b:6.1+1 .80 5.3 LSA
ENH eP 14:38:38.27 -0.7 31.0 21 b:5.3+1 .75 5.4 ENH
SSLB eP 14:38:48.16 0.2 32.0 44 b:6.1+1 .80 5.5 SSLB
YULB eP 14:38:48.38 0.5 32.0 45 b:4.9+1 .90 5.4 YULB
FITZ eP 14:39:03.63 -1.7 34.0 126 b:1.4+1 .80 4.9 FITZ
JOW eP 14:39:49.25 0.5 39.1 47 b:1.6+2 .60 6.0 JOW
WRAB eP 14:40:12.56 -1.1 42.1 122 b:2.3+1 .90 4.9 WRAB
WB2 eP 14:40:12.80 -0.9 42.1 122 b:2.0+1 .85 4.9 WB2
KBL eP 14:40:13.15 -1.1 42.2 325 b:1.1+1 .95 4.6 KBL
BJT eP 14:40:14.60 1.0 42.2 22 b:9.0+1 .70 5.6 BJT
AS01 eP 14:40:24.11 -0.9 43.5 127 AS01
AS31 eP 14:40:24.28 -0.4 43.5 127 b:6.0+0 1.1 4.3X AS31
JNU eP 14:40:34.15 0.0 44.7 41 b:7.3+1 .90 5.5 JNU
INCN eP 14:40:35.97 -0.7 45.0 34 b:4.4+1 1.0 5.3 INCN
KS01 eP 14:40:41.69 -0.5 45.7 35 KS01
KS15 eP 14:40:42.08 0.1 45.7 35 KS15
TKM2 eP 14:40:42.48 0.5 45.7 338 b:2.5+1 .85 5.1 TKM2
AAK eP 14:40:44.36 0.9 45.9 337 b:1.2+2 .75 5.1 AAK
EKS2 eP 14:40:46.90 1.1 46.2 336 b:3.4+1 .65 5.4 EKS2
SONA1eP 14:40:52.61 0.4 47.0 8 SONA
MK01 eP 14:40:52.84 0.2 47.1 346 MK01
MK31 eP 14:40:53.23 0.4 47.1 346 MK31
MKAR eP 14:40:53.23 0.4 47.1 346 MKAR
ULN eP 14:40:53.62 0.5 47.1 9 b:4.0+1 1.0 5.3 ULN
MAKZ eP 14:40:53.73 0.2 47.2 346 b:3.1+1 .65 5.4 MAKZ
COEN eP 14:40:59.28 -1.2 48.0 110 b:2.9+1 .95 5.3 COEN
KKAR eP 14:40:59.36 0.1 47.9 334 KKAR
INU eP 14:41:16.35 0.1 50.1 43 b:5.9+1 1.4 5.4 INU
TLY eP 14:41:19.35 0.9 50.4 5 b:2.9+1 .70 5.4 TLY
PMG eP 14:41:22.11 -0.3 50.9 103 b:1.8+1 .75 5.1 PMG
HIA eP 14:41:26.73 0.3 51.5 19 b:5.2+1 .95 5.5 HIA
MAJO eP 14:41:27.32 0.1 51.6 42 b:1.1+1 .80 4.9 MAJO
MJB9 eP 14:41:27.46 0.2 51.6 42 b:3.0+0 .85 4.3 MJB9
KURK eP 14:41:27.78 0.4 51.6 345 b:4.1+1 1.0 5.4 KURK
MDJ eP 14:41:29.04 0.8 51.7 29 b:3.2+1 .80 5.4 MDJ
CTAO eP 14:41:34.75 -0.2 52.6 117 b:1.5+1 1.0 4.9 CTAO
STKA eP 14:41:41.61 0.3 53.5 132 b:6.3+0 1.1 4.5 STKA
RAYN eP 14:41:50.40 0.0 54.7 298 b:1.1+1 .75 5.0 RAYN
BRVK eP 14:42:00.07 -0.4 56.2 341 b:3.1+1 .70 5.4 BRVK
ABKAReP 14:42:08.83 -0.3 57.4 332 ABKA
e 14:42:16.13 depth = 23.8X
ASAJ eP 14:42:17.77 0.4 58.5 37 b:2.5+1 .80 5.4 ASAJ
EIDS eP 14:42:17.85 0.6 58.5 121 b:3.3+1 .70 5.6 EIDS
KMBO eP 14:42:28.53 0.2 60.0 268 KMBO
YSS eP 14:42:29.43 0.5 60.2 34 b:1.0+2 1.1 5.9 YSS
GNI eP 14:42:36.48 0.6 61.2 316 b:3.2+1 .95 5.4 GNI
ARU eP 14:42:47.06 -0.7 63.0 337 b:3.0+1 1.0 5.4 ARU
KIV eP 14:42:55.03 -0.7 64.2 319 b:3.8+1 .90 5.5 KIV
YAK eP 14:43:00.74 -1.5 65.3 16 b:2.3+2 1.1 6.2 YAK
MBAR eP 14:43:11.87 0.6 66.5 269 b:1.6+1 1.2 4.9 MBAR
BR131eP 14:43:26.02 -0.6 69.0 312 BR13
PET eP 14:43:45.00 0.0 72.1 34 b:6.0+1 .80 5.6 PET
TIXI eP 14:43:49.46 -0.7 73.0 10 b:3.0+1 .80 5.3 TIXI
KIEV eP 14:44:01.96 -1.0 75.1 322 b:1.1+1 .70 4.9 KIEV
AK11 eP 14:44:02.32 -0.7 75.2 322 AK11
AKBB eP 14:44:02.35 -0.5 75.1 322 AKBB
BUR04eP 14:44:13.72 0.5 76.9 319 BUR0
BUR08eP 14:44:13.97 0.6 76.9 319 BUR0
VTS eP 14:44:15.35 -0.4 77.3 313 b:6.6+0 1.0 4.6 VTS
LVZ eP 14:44:22.23 -0.4 78.7 340 LVZ
FIA1 eP 14:44:29.17 0.1 79.9 332 FIA1
PSZ eP 14:44:32.49 -0.4 80.5 318 PSZ
e 14:44:40.02 0.2X
OJC eP 14:44:34.68 -0.3 80.9 321 OJC
TSUM eP 14:44:35.02 0.6 80.6 250 TSUM
SUR ePcP 14:44:35.29 0.4 79.3 237 SUR
MORC eP 14:44:42.09 -0.2 82.3 320 MORC
e 14:44:48.76 1.2X
BKZ eP 14:44:44.35 0.4 82.6 130 BKZ
KHC eP 14:44:54.44 -0.8 84.8 319 KHC
e 14:45:02.06 3.5X
GEC2 eP 14:44:55.30 0.5 84.7 319 GEC2
CLL eP 14:44:57.90 0.2 85.3 321 CLL
FUORNeP 14:45:06.55 0.5 86.9 316 FUOR
KEST eP 14:45:10.25 1.5 87.5 306 KEST
BFO eP 14:45:11.48 -0.6 88.2 318 BFO
e 14:45:18.85 depth = 23.0X
TAM qP 14:45:26.08 0.2 91.0 293 TAM
e 14:45:34.32 depth = 25.6X
QSPA eP 14:45:27.48 1.4 91.3 180 b:4.5+1 1.0 5.8 QSPA
CAST eP 14:45:57.14 0.7 97.9 25 CAST
BPAW eP 14:45:57.44 0.0 98.2 24 BPAW
SPU eP 14:46:00.45 0.6 98.7 27 SPU
EGMT ePKPdf 14:51:21.65 -0.4 125.5 22 EGMT
MOD ePKPdf 14:51:21.72 0.0 125.2 34 MOD
LAO ePKPdf 14:51:26.83 0.1 127.9 20 LAO
RSSD ePKPdf 14:51:32.87 0.2 130.9 20 RSSD
O20A ePKPdf 14:51:36.31 0.3 132.6 27 O20A
e 14:51:43.99 -4.8X
WUAZ ePKPdf 14:51:41.44 1.6 134.6 33 WUAZ
KSU1 ePKPdf 14:51:45.06 -0.4 137.8 16 KSU1
V34A ePKPpre 14:51:46.13 -4.4X 140.5 19 V34A
ABTX ePKPpre 14:51:50.05 -4.4X 142.6 24 ABTX
MIAR ePKPpre 14:51:50.48 -4.3X 142.9 15 MIAR
JCT ePKPpre 14:51:55.30 -2.4X 144.4 26 JCT
GOGA ePKP 14:51:58.75 -0.4 145.4 1 GOGA
LRAL ePKPdf 14:51:58.94 -0.5 145.6 6 LRAL
TIGA ePKPbc 14:52:05.21 0.2 147.4 1 TIGA
LCO ePKPbc 14:52:13.96 1.3 150.2 202 LCO
Generated 2011 FEB 20 at 15:46 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
