This is a preliminary moment tensor solution for the 08:36 UTC event
located 5 km WSW of Yountville, CA (38.38 N, 122.41 W).  A Mw of 5.0 and depth
of 10 km was obtained using regional surface waves.  Strike-slip mechanism.

 Principal Axes:
    Axis    Value   Plunge   Azimuth
      T     1.700       9      281
      N     0.000      79       65
      P    -1.700       6      190
 
 Best Fitting Double-Couple:
    Mo = 1.70E+23 Dyne-cm
    Plane   Strike   Rake   Dip
     NP1       55      11    88
     NP2      325     178    79
Best regards,
Hrvoje Tkalcic
[email protected]
UC Berkeley Seismological Laboratory

        Regional surface waves
Mo      1.7e23 dyne-cm
Mw      4.96
strike   -35;  55
rake     178;  11
dip     79;88
Depth   10 km
 
 Berkeley Moment Tensor Solution
 
 Event Date/Time: 10009030836
 
 Data Used: Surface Wave Inversion
 
 Moment Tensor: Scale = 10**23 Dyne-cm
    Component   Value
       Mxx     -1.574
       Mxy     -0.581
       Mxz      0.234
       Myy      1.552
       Myz     -0.231
       Mzz      0.022
 
                                                
                    -------                    
              -------------------              
           #------------------------           
         #####------------------------         
       #########------------------------       
      ############----------------------#      
     ###############-----------------#####     
    #################--------------########    
       ################---------###########    
   # T #################------##############   
   #   ##################--#################   
   #####################---#################   
   ###################------################   
   ################----------###############   
    ############--------------#############    
    #########------------------############    
     #####----------------------##########     
      ##-------------------------########      
       ---------------------------######       
         --------------------------###         
           --------   -------------#           
              ----- P -----------              
                      -----                    
                                               
     Lower Hemisphere Equiangle Projection