Link to USGS home page.
Earthquake Hazards Program
Phase Data

Explanation of Parameters


     20 JUL 2007  (201)

     ot  = 09:48:30.53   +/-   1.30              GUAM REGION                     
     lat =      13.891   +/-   22.3
     lon =     144.432   +/-   22.1              MAGNITUDE 4.6 (GS)       
     dep =        20.0  (assigned)    

     60 km (35 miles) NW of HAGATNA, Guam (pop 40,000)
     90 km (55 miles) WSW of Rota, Northern Mariana Islands (pop 3,000)
     200 km (125 miles) SW of SAIPAN, Northern Mariana Islands
     305 km (190 miles) SSW of Anatahan, Northern Mariana Islands
 
     Felt on Guam.

     nph =   24 of  27    se = 1.07    FE=216                            C   

     error ellipse = (224.6,  0.0, 39.4;134.6,  0.0, 12.3;  0.0,  0.0,  0.0)

 mb = 4.6 ( 20)  ML = 4.7 (  1)  mblg = 5.4 (  1)  md = 4.6 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 GUMO ePn     09:48:40.08  -0.9    0.5 125 d:4.5+2     4.6  L:1.0+2 .65 4.7  GUMO
      eSg     09:48:46.39  S res =  -1.7X  g:6.2+1 .75 5.4 
 MAJO eP      09:53:35.53  -1.1   23.2 347 b:1.3+1 .78 4.5                   MAJO
 KURK eP      09:59:04.49   1.4   64.1 320 b:6.9+0 1.0 4.7                   KURK
      e       09:59:17.17   5.1X
 SEW  eP      09:59:14.29  -2.4   66.2  30                                   SEW 
 BRVK qP      09:59:35.85  -1.8   69.5 322 b:4.7+0 .86 4.6                   BRVK
 EGAK eP      09:59:46.28   0.3   70.9  26 b:2.4+0 .47 4.6                   EGAK
 PNL  qP      09:59:47.31  -0.2   71.1  31 b:2.2+1 1.1 5.2                   PNL 
 INK  eP      10:00:06.07   0.2   74.3  22                                   INK 
 WRAK eP      10:00:10.50   0.1   75.0  35 b:4.9+0 .75 4.6                   WRAK
 GNW  eP      10:00:48.52   0.8   81.7  43 b:5.5+0 .88 4.6                   GNW 
 HUMO eP      10:00:53.43   0.8   82.6  48 b:2.7+0 .60 4.5                   HUMO
 MOD  eP      10:01:03.96   0.4   84.7  48 b:2.0+0 .65 4.5                   MOD 
 NEW  eP      10:01:06.36   0.2   85.3  42 b:8.5+0 .91 5.0                   NEW 
 WALA eP      10:01:16.21   1.0   87.1  40 b:5.2+0 .95 4.7                   WALA
 HLID eP      10:01:22.48   0.7   88.4  46 b:5.6+0 1.0 4.8                   HLID
 ELK  eP      10:01:23.73   0.6   88.7  48 b:7.0+0 .69 5.1                   ELK 
      e       10:01:34.80   2.6X
 TPNV eP      10:01:25.14   0.4   89.0  52 b:2.9+0 .85 4.6                   TPNV
 MCMT eP      10:01:25.23   0.2   89.1  44                                   MCMT
 DUG  eP      10:01:31.68  -0.4   90.6  48 b:3.0+0 .90 4.6                   DUG 
 IMW  eP      10:01:32.69   0.1   90.7  44 b:1.7+0 .60 4.5                   IMW 
 MOOW eP      10:01:33.76   0.4   90.9  44 b:4.3+0 1.3 4.6                   MOOW
 RLMT eP      10:01:36.64   1.3   91.4  43 b:2.1+0 .73 4.6                   RLMT
 LAO  eP      10:01:39.50  -2.3   92.8  41 b:1.2+1 .83 5.4                   LAO 
 SRU  eP      10:01:41.99   0.4   92.7  49 b:1.8+0 .60 4.7                   SRU 



 Generated 2007 JUL 24 at 19:34 UTC

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

 


FirstGov button  Take Pride in America button