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Earthquake Hazards Program

Magnitude 6.9 RAT ISLANDS, ALEUTIAN ISLANDS, ALASKA

2003 June 23 12:12:36 UTC

Preliminary Earthquake Report

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

USGS Fast Moment Tensor Solution

 03/06/23 12:12:35.79
 RAT ISLANDS, ALEUTIAN ISLANDS   
 Epicenter:  51.581  176.665
 MW 6.9

 USGS MOMENT TENSOR SOLUTION
 Depth  13         No. of sta: 57
 Moment Tensor;   Scale 10**19 Nm
   Mrr= 1.02       Mtt=-1.06
   Mff= 0.04       Mrt= 1.53
   Mrf= 1.00       Mtf=-0.29
  Principal axes:
   T  Val=  2.12  Plg=59  Azm=317
   N        0.01       9       62
   P       -2.13      30      157

 Best Double Couple:Mo=2.1*10**19
  NP1:Strike=273 Dip=17 Slip= 122
  NP2:        59     75        80
                                      
               -------                
          -----------------           
        -----##########------         
      ---##################----       
    ---#######################---     
   --#############################    
   -#########   ##############---#    
  -########## T ############------#   
  ###########   ##########---------   
  ######################-----------   
  ###################--------------   
  ################-----------------   
   ###########--------------------    
   ######-------------------------    
    -----------------   ---------     
      --------------- P -------       
        -------------   -----         
          -----------------           
               -------                
                                      

Moment Tensor Solution

Explanation of Parameters
Current USGS Fast Moment Tensor Solutions
USGS E-mail Notification Services
Source Parameter Search

For more information, contact Stuart Sipkin sipkin@usgs.gov


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