Phase Data

Explanation of Parameters


      7 APR 2013  ( 97)

     ot  = 04:34:06.35   +/-   1.09              MARIANA ISLANDS REGION          
     lat =      17.516   +/-   12.9
     lon =     147.263   +/-   16.1              MAGNITUDE 4.7 (GS)       
     dep =        60.1   +/-    8.9   

     171 km (106 miles) ESE of Pagan, Northern Mariana Islands
     213 km (132 miles) NE of Anatahan, Northern Mariana Islands
     305 km (189 miles) NNE of SAIPAN, Northern Mariana Islands
     522 km (324 miles) NNE of HAGATNA, Guam

     nph =   30 of  35    se = 0.53    FE=215                            A   

     error ellipse = ( 89.0,  5.0, 24.8;181.0, 18.0, 20.4;342.0, 70.0, 12.3)

 mb = 4.7 ( 29)  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
 SARN ePn     04:34:32.91   0.0    1.6 240                                   SARN
 ANA2 ePn     04:34:36.11  -0.2    1.9 232                                   ANA2
 GUMO ePn     04:35:11.25  -1.2    4.5 211                                   GUMO
 PATS ePn     04:37:35.27  -1.4   15.1 133 b:1.5+2 1.0 5.2                   PATS
 MAJO eP      04:38:40.22  -0.1   20.6 339 b:4.3+1 1.1 4.7                   MAJO
 RABL eP      04:38:56.82   0.0   22.1 167 b:1.2+2 1.2 5.2                   RABL
 ULN  eP      04:42:12.50  -0.4   44.6 322 b:7.9+0 1.4 4.3                   ULN 
 TPUB ePcP    04:42:58.56  -1.4   25.6 288                                   TPUB
 BBOO eP      04:43:04.38   0.8   51.2 192 b:1.2+1 .95 4.9                   BBOO
 BILL eP      04:43:09.39   0.2   52.0   9 b:8.6+0 1.2 4.7                   BILL
 MAKZ eP      04:44:10.29  -0.4   60.6 314 b:3.9+0 .95 4.5                   MAKZ
 CAST eP      04:44:17.69   1.1   61.5  27 b:6.8+0 1.0 4.7                   CAST
 BPAW eP      04:44:21.30   0.2   62.1  26 b:1.1+1 1.0 4.9                   BPAW
 TRF  eP      04:44:21.55  -0.4X  62.3  27 b:1.5+1 1.2 5.0                   TRF 
 MLY  eP      04:44:22.97  -0.8   62.5  25 b:1.2+1 1.1 4.9                   MLY 
 SML  eP      04:44:25.10   0.4   62.7  29 b:1.4+1 1.0 5.0                   SML 
 RND  eP      04:44:26.64   0.8   62.9  27 b:8.9+0 1.2 4.7                   RND 
 KURK eP      04:44:26.98  -0.8   63.1 319 b:7.8+0 .90 4.8                   KURK
 SCM  eP      04:44:27.69  -0.1   63.1  29 b:1.9+1 1.1 5.1                   SCM 
 WRH  eP      04:44:30.24   0.4   63.5  26 b:1.7+1 1.6 4.8                   WRH 
 RIDG eP      04:44:37.25  -0.6   64.7  27 b:1.1+1 1.1 4.7                   RIDG
 DOT  eP      04:44:38.60  -1.3X  65.0  27 b:3.6+0 .88 4.4                   DOT 
 SCRK eP      04:44:40.60   0.0X  65.1  27 b:1.5+1 1.4 4.8                   SCRK
 YKU2 eP      04:44:49.29  -0.1   66.5  32 b:2.5+2 .88 6.2                   YKU2
 EGAK eP      04:44:49.49   0.3   66.5  26 b:1.1+1 1.3 4.7                   EGAK
 DAWY eP      04:44:53.82   0.4   67.1  27 b:4.4+0 1.1 4.4                   DAWY
 NIL  eP      04:44:56.05   0.3   67.4 300 b:1.9+1 .95 5.1                   NIL 
 HYT  eP      04:44:57.36   0.2   67.7  31 b:1.2+1 1.2 4.7                   HYT 
 BRVK eP      04:45:01.26  -0.4   68.4 321 b:6.4+0 .70 4.7                   BRVK
 KKAR eP      04:45:03.40  -0.2   68.7 310 b:1.8+1 1.7 4.7                   KKAR
 KK31 eP      04:45:03.79   0.2   68.7 310                                   KK31
 INK  eP      04:45:11.03   0.5   69.9  23 b:1.8+1 1.7 4.7                   INK 
 ARU  eP      04:45:40.92   0.3   74.9 325 b:5.8+0 .70 4.6                   ARU 
 ABKAReP      04:45:41.92  -0.7X  75.2 318 b:3.2+0 1.0 4.2                   ABKA
 TCRU epP     04:47:01.66   0.9X  87.0  50                                   TCRU



 Generated 2013 APR  7 at 04:54 UTC

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