This is a preliminary UCB moment tensor solution for the event located
10 km WSW of the Geysers, CA (38.757N 122.913W; Z=6.2 km; ML=4.3; USGS/UCB
Joint NOtification System) on January 10, 2000 at 21:41:27UTC.  A Mw4.4
and depth of 5 km were obtained from long-period waves recorded at BKS,
JRSC and ORV. A combined Mw4.4 was obtained from the complete waveform
and surface spectra methods.
 
 Best Fitting Double-Couple:
    COMPLETE WAVEFORM SOLUTION          SURFACE WAVE SOLUTION
    Mo = 3.80E+22 Dyne-cm               5.6e+22
    Mw = 4.35                           4.5
    Z  = 5 km                           6 km
    Plane   Strike   Rake   Dip         Strike   Rake   Dip
     NP1      262     -27    67         243      -18    46
     NP2        3    -155    65         346     -135    77
 Principal Axes:
    Axis    Value   Plunge   Azimuth
      T     3.800       2      313
      N     0.000      55       45
      P    -3.800      35      222
Best regards,
Douglas Dreger
Hrvoje Tkalcic
UCB Seismological Laboratory
 
                                               
 
 
 
 Berkeley Moment Tensor Solution (COMPLETE WAVEFORMS)
 
 Event Date/Time: prel
 
 Moment Tensor: Scale = 10**22 Dyne-cm
    Component   Value
       Mxx      0.330
       Mxy     -3.168
       Mxz      1.399
       Myy      0.901
       Myz      1.107
       Mzz     -1.230
 
                                               
                    #####--                    
              ############-------              
           ################---------           
          #################-----------         
        T ##################------------       
      #   ##################-------------      
     ########################-------------     
    #########################--------------    
    #######################--####----------    
   #############-------------#############--   
   ########------------------###############   
   ####----------------------###############   
   #-------------------------###############   
   --------------------------###############   
    -------------------------##############    
    ----------   -----------###############    
     --------- P -----------##############     
      --------   ----------##############      
       --------------------#############       
         -----------------############         
           --------------###########           
              ----------#########              
                    ---####                    
                                               
     Lower Hemisphere Equiangle Projection