Phase Data

Explanation of Parameters


      2 MAR 2013  ( 61)

     ot  = 12:49:56.74   +/-   0.83              GUAM REGION                     
     lat =      13.673   +/-   10.7
     lon =     144.886   +/-   23.9              MAGNITUDE 4.6 (GS)       
     dep =       127.3   +/-    6.8   

     27 km (16 miles) NE of HAGATNA, Guam (pop 40,000)
     63 km (39 miles) SSW of Rota, Northern Mariana Islands (pop 3,000)
     191 km (119 miles) SSW of SAIPAN, Northern Mariana Islands
     308 km (192 miles) SSW of Anatahan, Northern Mariana Islands
 
     Felt at Barrigada, Chalan Pago, Santa Rita and Yigo.

     nph =   18 of  18    se = 0.41    FE=216                            A   

     error ellipse = (274.0,  8.0, 37.3;  8.0, 25.0, 18.1;167.0, 63.0,  4.4)

 mb = 4.6 ( 10)  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
 GUMO ePn     12:50:14.27   0.2    0.1 192                                   GUMO
      eSn     12:50:26.29  S res =  -0.8 
 ANA2 ePn     12:50:39.70  -0.7    2.8  17                                   ANA2
      eSn     12:51:12.94  S res =  -1.0 
 SARN ePn     12:50:44.99  -0.1    3.1  16                                   SARN
 PATS ePn     12:53:20.74   0.3   14.9 116                                   PATS
 RABL eP      12:54:10.68   0.2   19.2 157 b:3.4+1 .65 4.8                   RABL
 FAKI eP      12:54:28.26   1.1   20.7 218 b:4.7+1 1.4 4.7                   FAKI
 MTN  eP      12:55:50.12  -0.4   29.7 208 b:2.6+1 1.1 4.8                   MTN 
 CTAO eP      12:56:25.44   0.6   33.6 178 b:5.7+1 1.6 5.1                   CTAO
 WB2  eP      12:56:35.95  -1.0   35.0 198                                   WB2 
 WRAB eP      12:56:36.54  -0.3   35.0 198 b:8.4+0 1.1 4.5                   WRAB
 FITZ eP      12:56:52.90   0.1   36.8 212 b:8.2+0 1.0 4.5                   FITZ
 AS01 eP      12:57:07.89   0.1   38.6 196                                   AS01
 AS31 eP      12:57:08.07   0.2   38.6 196 b:1.1+0 .90 3.7                   AS31
 STKA eP      12:58:02.38  -0.3   45.4 184 b:8.0-1 1.0 3.4                   STKA
 BBOO eP      12:58:14.68  -0.4   47.0 190 b:9.9+0 .95 4.5                   BBOO
 FORT eP      12:58:15.78   0.1   47.1 200 b:2.7+1 1.0 4.9                   FORT



 Generated 2013 MAR  2 at 13:26 UTC

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