This is a preliminary UCB moment tensor solution for the event located
31 km W of Arcata, CA (40.857N 124.454W; Z=12.4km; ML=4.4; USGS/UCB
Joint Notification System) on September 22, 2000 at 10:50:27UTC. A Mw4.5
and depth of 24 km was obtained from long-period waves recorded by HOPS
WDC and YBH.
 
 Best Fitting Double-Couple:
    Mo = 5.50E+22 Dyne-cm
    Mw = 4.46
    Plane   Strike   Rake   Dip
     NP1       62     -21    83
     NP2      155    -173    69
 Principal Axes:
    Axis    Value   Plunge   Azimuth
      T     5.500      10      110
      N     0.000      68      226
      P    -5.500      20       17
Best regards,
Douglas Dreger
UC Berkeley Seismological Laboratory
 
                                               
                                               
 
 Berkeley Moment Tensor Solution
 
 Event Date/Time: prel
 
 Moment Tensor: Scale = 10**22 Dyne-cm
    Component   Value
       Mxx     -3.824
       Mxy     -3.104
       Mxz     -1.984
       Myy      4.272
       Myz      0.375
       Mzz     -0.449
 
                    -------                    
              #------------------              
           ####------------   ------           
         ######------------ P --------         
       ########------------   ----------       
      #########--------------------------      
     ##########--------------------------#     
    ############-----------------------####    
    ############--------------------#######    
   ##############----------------###########   
   ###############------------##############   
   ###############---------#################   
   ################----#####################   
   ################-###################   ##   
    ############-----################## T #    
    #######-----------#################   #    
     #-----------------###################     
      ------------------#################      
       -------------------##############       
         -------------------##########         
           -------------------######           
              ------------------#              
                    -------                    
                                               
     Lower Hemisphere Equiangle Projection