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Earthquake Hazards Program
Phase Data

Explanation of Parameters


      2 MAR 2007  ( 61)

     ot  = 04:40:00.31   +/-   0.61              SAN FRANCISCO BAY AREA, CALIF.  
     lat =      37.927   +/-    6.3
     lon =    -122.137   +/-    6.2              MAGNITUDE 4.1 (GS)       
     dep =         5.0  (geophysicist)

     10 km (5 miles) WSW of Concord, California (pop 121,000)
     20 km (10 miles) W of Clayton, California (pop 10,000)
     20 km (10 miles) NE of Oakland, California (pop 399,000)
     90 km (55 miles) SW of SACRAMENTO, California (pop 407,000)

     nph =   25 of  60    se = 1.55    FE=039                            A   

     error ellipse = (223.6,  0.0,  9.6;133.6,  0.0,  6.6;  0.0,  0.0,  0.0)

 mb = 4.1 (  5)  ML = 3.8 (  3)  mblg = 0.0 (  0)  md = 4.3 (  4)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 SAC  ePn     04:40:09.29   1.1    0.4 213                                   SAC 
 MCCM iPc     04:40:13.61   1.3    0.6 290                                   MCCM
      eS      04:40:24.37  S res =   4.0X
 NSHM eP      04:40:14.50   0.8    0.7 328 d:2.4+2     4.2                   NSHM
 SAO  iPnc    04:40:22.60  -2.3    1.3 154 d:2.3+2     4.4  L:6.6+0 .78 4.0  SAO 
      eSn     04:40:37.99  S res =  -4.5X
 HOPS ePn     04:40:23.23  -1.8    1.3 326 d:2.1+2     4.3                   HOPS
 CMB  ePn     04:40:24.70  -1.7    1.4  85 d:3.0+2     4.6  L:1.2+1 .60 4.4X CMB 
      eSn     04:40:42.14  S res =  -3.0X
 OHCM ePn     04:40:25.03  -2.8    1.5  20                                   OHCM
 KCPM ePn     04:40:35.63  -0.5    2.1 328 d:1.8+2     4.5X                  KCPM
      eSn     04:40:53.63  S res =  -8.9X
 KIPM P       04:40:36.36  -0.6    2.2 331 d:1.8+2     4.5X                  KIPM
 WAKR ePn     04:40:38.61   0.9    2.2  74                                   WAKR
 WDC  ePn     04:40:41.83  -2.1    2.7 353 d:2.4+2     4.9X L:5.0-1 .50 3.7  WDC 
 PTRM ePn     04:40:43.08  -2.0    2.7 145 d:1.9+2     4.8X                  PTRM
 MTUM ePn     04:40:47.70   0.5    2.9 100                                   MTUM
 KRMB ePn     04:41:01.28   1.1    3.8 340 d:1.3+2     4.9X                  KRMB
 YBH  ePn     04:41:01.57   1.6    3.8 354                                   YBH 
 DAC  ePn     04:41:01.72  -0.6    4.0 113 L:2.8-3 1.1 2.0X                  DAC 
 TPH  ePn     04:41:02.95   2.1    3.9  86 L:2.9-3 1.1 2.0X                  TPH 
 MOD  ePn     04:41:06.63   1.3    4.2  19                                   MOD 
 BMN  ePn     04:41:09.63  -0.6    4.6  55 L:9.5-4 1.7 1.7X                  BMN 
 TPNV ePn     04:41:13.69   0.5    4.8 100                                   TPNV
 TRCR ePn     04:41:17.87  -0.8X   5.2  83 d:1.7+2     5.6X                  TRCR
 WVOR P       04:41:20.52   1.1X   5.2  30 d:2.3+2     5.9X L:7.8-2 .95 3.8  WVOR
                                           b:6.4+1 .95 5.2X
 SHPR ePn     04:41:27.40   1.0X   5.7 102                                   SHPR
 ELK  P       04:41:30.98   0.4X   6.0  60 d:1.7+2     5.9X L:1.4-1 .68 4.2X ELK 
                                           b:1.8+1 .58 5.0X
 PFO  ePn     04:41:32.58  -1.6X   6.3 131                                   PFO 
 ARUT P       04:41:43.64   1.6X   6.9  88 d:2.6+2     6.6X                  ARUT
 CCUT P       04:41:45.70   2.5X   7.0  90 d:2.4+2     6.6X                  CCUT
 BGU  P       04:41:54.05   1.4X   7.7  64 d:2.2+2     6.8X                  BGU 
 HOOD ePn     04:41:55.17   6.1X   7.4   3                                   HOOD
 MSU  ePn     04:41:58.75   3.2X   7.9  83                                   MSU 
 BMO  ePn     04:41:59.80   5.1X   7.8  26                                   BMO 
 HLID ePn     04:42:04.67   5.6X   8.1  44                                   HLID
 JLU  ePn     04:42:10.97   3.8X   8.7  69                                   JLU 
 HAWA ePn     04:42:11.01   4.6X   8.7  12                                   HAWA
 TMUT ePn     04:42:12.21   5.6X   8.7  78                                   TMUT
 LON  ePn     04:42:13.12   4.6X   8.8   1                                   LON 
 WUAZ ePn     04:42:13.33   2.7X   9.0 102                                   WUAZ
 HWUT ePn     04:42:13.36   3.2X   8.9  62                                   HWUT
 SRU  ePn     04:42:18.51   5.0X   9.2  79                                   SRU 
 REDW ePn     04:42:31.86   5.0X  10.1  54                                   REDW
 DLMT ePn     04:42:34.63   5.8X  10.3  41                                   DLMT
 TUC  ePn     04:42:35.83  -0.6X  10.9 118                                   TUC 
 LOHW ePn     04:42:36.47   5.8X  10.4  53                                   LOHW
 HRY  P       04:42:42.76  -4.1X  11.6  38                                   HRY 
 CHMT P       04:42:48.64   8.6X  11.1  33                                   CHMT
      e       04:43:00.86
 BSMT ePn     04:42:48.76   6.4X  11.3  26                                   BSMT
 RLMT P       04:43:02.70  10.5X  12.0  49                                   RLMT
 EGMT P       04:43:18.35   5.2X  13.5  38 b:1.6+1 1.2 4.9X                  EGMT
 MNTX P       04:43:40.86   6.6X  15.1 109 b:5.0+0 1.0 3.9                   MNTX
 EDM  qPn     04:43:51.65  -0.3   16.5  19                                   EDM 
 DGMT P       04:43:56.99   1.3   16.8  45 b:1.4+1 .93 4.1                   DGMT
 LTX  eP      04:44:08.82   2.6   17.6 114 b:2.2+1 1.1 4.2                   LTX 
 KSU1 eP      04:44:34.58   0.9   20.0  79 b:8.1+0 .68 4.2                   KSU1
 FFC  P       04:44:51.23  -0.6   21.7  33 b:1.2+1 1.1 4.2                   FFC 
 MTP          04:49:08.21  -9.3X  52.9  96                                   MTP 



 Generated 2007 MAR  2 at 05:04 UTC

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

 


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