Date: Mon, 30 Jan 1995 16:39:05 -0800
Subject: Robinson_Point 950129_0311 earthquake


From: Beate Leitner,
      Jochen Braunmiller,
      John Nabelek

This is an up-date of our original solution. We added the Washington
Regional Seismic Network broadband data. Inversion in 20-50s pass-band,
depth-steps 3km (15, 18, 21, 24). Our solution (thrust-mech. 18km depth)
is almost identical to our original solution.

Stations: PNT(Z), TTW(Z), WALA(Z), NEW, LTY, LON,
          COR, SSW(Z), PGC(Z), PMB(T,R)

Location: PNSN

|         OSU MOMENT TENSOR SOLUTION
|   
|   Event: Tacoma, Washington 
|     Date/Time: 95/ 1/29  3:11:22
|     Lat./Lon.:   47.380 -122.350
|         mb/Ms:    5.0      0.0
|
|   Depth (km):  18.0    Stations Used: 10
|   Moment Tensor: Scale = 10**23 dyn cm
|     Component  Value    Component  Value
|        Mxx    -2.003       Myy     0.331
|        Mxy     0.064       Myz    -0.772
|        Mxz    -0.690       Mzz     1.672
|   Source Composition:
|     (Type/%)  DC/100  CLVD/  0   Iso/  0
|   Principal Axes:
|       Axis     Value    Plunge   Azimuth
|         T      2.129        65       248
|         N      0.002        22        96
|         P     -2.131        11         2
|   Best Fitting Double-Couple:
|       Mo = 2.13E+23 dyn cm     Mw = 4.85
|       Plane   Strike      Rake       Dip
|        NP1       291       116        59
|        NP2        66        53        40
|                                              
|                                              
|                   ---   -                    
|             --------- P -------              
|          ------------   ----------           
|        -----------------------------         
|      ---------------------------------       
|     -----------------------------------      
|    -------------------------------------     
|   -###################------------------#    
|   ########################--------------#    
|  #############################----------##   
|  ################################------###   
|  ##############   #################---####   
|  ############## T ########################   
|  ##############   #################----###   
|   ################################------#    
|   ##############################---------    
|    -#########################-----------     
|     ---##################--------------      
|      ---------------------------------       
|        -----------------------------         
|          -------------------------           
|             -------------------              
|                   -------                    
|                                              
|   Lower Hemisphere Equal Area Projection