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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     18 JUL 2007  (199)

     ot  = 08:48:24.95   +/-   0.76              TANZANIA                        
     lat =      -2.982   +/-   17.3
     lon =      36.312   +/-   26.9              MAGNITUDE 4.5 (GS)       
     dep =        10.0  (geophysicist)

     60 km (35 miles) NW of Arusha, Tanzania (pop 102,000)
     195 km (120 miles) SSW of NAIROBI, Kenya
     300 km (185 miles) S of Nakuru, Kenya
     540 km (335 miles) NW of DAR ES SALAAM, Tanzania

     nph =   10 of  14    se = 1.54    FE=573                            C   

     error ellipse = (120.3,  0.0, 40.8; 30.3,  0.0, 11.7;  0.0,  0.0,  0.0)

 mb = 4.5 (  9)  ML = 4.8 (  1)  mblg = 4.4 (  2)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 KMBO ePn     08:48:59.93  -0.1    2.1  27 d:5.4+2     5.4X L:1.4+1 .30 4.8  KMBO
      eS      08:49:24.70  S res =  -1.3X  g:1.1+0 .70 4.2 
 LSZ  ePn     08:51:49.38  -2.6   14.6 213 g:1.6-1 .87 4.5                   LSZ 
      eSn     08:54:34.09  S res =   0.0X
 ABPO qP      08:52:56.25   7.3X  19.2 147 b:1.7+1 1.1 4.2                   ABPO
 LBTB eP      08:53:44.14   2.0   24.2 204 b:1.1+1 1.1 4.3                   LBTB
 TSUM qP      08:53:44.64   0.8   24.4 227 b:5.8+0 1.0 4.1                   TSUM
 BOSA eP      08:54:14.11   1.5   27.6 201 b:8.9+0 .94 4.5                   BOSA
 SUR  qP      08:54:56.38  -1.3   32.7 205 b:1.9+1 1.2 4.9                   SUR 
 CSS  qP      08:55:35.36  -6.6X  37.8 356 b:2.5+1 1.2 4.8                   CSS 
 DBIC qP      08:56:18.77   0.3   42.2 283 b:7.7+1 1.8 5.1                   DBIC
 TKM2 eP      08:58:15.83  -1.1   57.8  33 b:2.7+0 .80 4.3                   TKM2
 MK31 eP      08:58:58.58   0.2   63.9  33                                   MK31
 KURK eP      08:59:02.33   0.1   64.6  28 b:4.0+0 1.0 4.5                   KURK



 Generated 2007 JUL 24 at 08:48 UTC

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

 


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