Phase Data

Explanation of Parameters


     23 FEB 2013  ( 54)

     ot  = 11:39:47.34   +/-   1.07              NIAS REGION, INDONESIA          
     lat =       1.391   +/-   11.9
     lon =      97.155   +/-   16.3              MAGNITUDE 4.6 (GS)       
     dep =        35.0   +/-    3.2   

     185 km (115 miles) WSW of Sibolga, Sumatra, Indonesia
     236 km (146 miles) W of Padangsidempuan, Sumatra, Indonesia
     542 km (336 miles) WSW of KUALA LUMPUR, Malaysia
     1361 km (845 miles) NW of JAKARTA, Java, Indonesia

     nph =   42 of  44    se = 0.53    FE=706                            A   

     error ellipse = (242.0,  0.0, 27.3;152.0,  0.0, 14.7; 14.0, 88.0,  4.8)

 mb = 4.6 ( 25)  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
 PSI  ePn     11:40:22.17   0.8    2.2  54                                   PSI 
 LHMI ePn     11:40:45.47   1.8    3.8 357                                   LHMI
 BKNI ePn     11:40:49.27   2.7    4.0 105                                   BKNI
 IPM  ePn     11:41:00.18   1.1    4.9  52                                   IPM 
 KULM ePn     11:41:03.20   0.3    5.2  42                                   KULM
 MYKOMePn     11:41:24.27   0.9    6.7  87                                   MYKO
 MNAI ePn     11:41:44.05   0.9    8.1 135                                   MNAI
      eSn     11:43:11.77  S res =  -2.2 
 CM01 ePn     11:43:41.53  -1.2   17.0   6                                   CM01
 CHTO ePn     11:43:46.21  -1.4   17.4   6 b:9.7+0 1.3 3.8                   CHTO
 SHL  eP      11:45:03.29  -0.8   24.6 348 b:3.7+1 1.0 4.9                   SHL 
 ENH  eP      11:46:01.42  -0.5   31.0  21 b:1.7+1 .80 4.9                   ENH 
 XAN  eP      11:46:29.69  -0.8   34.3  18 b:1.3+1 .85 4.9                   XAN 
 BJT  eP      11:47:36.47  -0.1   42.2  22 b:1.2+1 .80 4.7                   BJT 
 WB2  eP      11:47:36.68  -0.4   42.2 122 b:1.3+1 1.4 4.5                   WB2 
      eP      11:47:37.12   0.0 
 WRAB eP      11:47:37.13   0.0   42.2 122 b:1.8+1 1.3 4.6                   WRAB
 AS01 eP      11:47:47.87  -0.6   43.6 127                                   AS01
 TARG eP      11:47:49.93  -0.2   43.8 339 b:4.3+0 .80 4.3                   TARG
 NRN  eP      11:47:53.41   0.1   44.2 337 b:2.8+0 .60 4.3                   NRN 
 KDJ  eP      11:47:54.62   0.2   44.3 339 b:5.3+0 .90 4.4                   KDJ 
 GAR  eP      11:47:57.16  -0.5   44.8 330 b:4.0+0 .92 4.3                   GAR 
 CHGR eP      11:47:59.79  -0.5   45.1 329 b:7.4+0 .78 4.6                   CHGR
 ARSB eP      11:48:02.26  -0.1   45.4 334 b:1.2+1 .45 5.1                   ARSB
 KS01 eP      11:48:04.60  -0.6   45.7  35                                   KS01
 SONA1eP      11:48:15.26   0.3   47.0   9                                   SONA
 MK01 eP      11:48:15.54   0.2   47.0 346                                   MK01
 ULN  eP      11:48:15.73  -0.2   47.1   9 b:3.9+0 1.0 4.3                   ULN 
 MKAR eP      11:48:15.87   0.4   47.0 346 b:2.7+1 .55 5.4                   MKAR
 MK31 eP      11:48:15.87   0.4   47.0 346                                   MK31
 MAKZ eP      11:48:16.29   0.1   47.1 346 b:3.3+0 .70 4.4                   MAKZ
 KKAR eP      11:48:21.63  -0.3   47.9 334                                   KKAR
 BBOO eP      11:48:39.15   0.3   50.0 136 b:2.8+1 1.6 5.0                   BBOO
 TLY  eP      11:48:41.30   0.1   50.4   5 b:1.4+1 1.5 4.7                   TLY 
 KURK eP      11:48:50.26   0.1   51.6 345 b:4.6+0 .95 4.4                   KURK
 ZALV eP      11:49:03.57   0.4   53.4 351                                   ZALV
 ZAA0 eP      11:49:03.66   0.5   53.4 351 b:5.2+0 .70 4.6                   ZAA0
 BRVK eP      11:49:23.33   0.2   56.1 341 b:2.6+0 .75 4.3                   BRVK
 ABKAReP      11:49:31.63  -0.2   57.3 332                                   ABKA
 FIA1 eP      11:51:51.78  -0.1   79.8 333 b:1.7+1 1.4 4.8                   FIA1
 CRLZ eP      11:51:55.56  -0.2   80.5 135 b:6.8+1 1.4 5.4                   CRLZ
 MQZ  eP      11:51:55.58  -0.4   80.5 135 b:5.9+1 1.5 5.3                   MQZ 
 BOZ  ePKPpre 11:58:37.01  -2.2X 126.7  25                                   BOZ 
 VCNR ePKPpre 11:58:40.41   0.3X 127.3  36                                   VCNR



 Generated 2013 FEB 23 at 12:33 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver