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Earthquake Hazards Program

Magnitude 7.2 Vanuatua Islands

January 2, 2002 at 17:22:49 UTC

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

USGS Rapid Moment Tensor Solution

 02/01/02 17:22:50.58
 VANUATU ISLANDS (REVISED)
 Epicenter: -17.778  167.829
 MW 7.1

 USGS MOMENT TENSOR SOLUTION
 Depth  21         No. of sta: 47
 Moment Tensor;   Scale 10**19 Nm
   Mrr= 4.47       Mtt= 0.82
   Mff=-5.29       Mrt=-0.69
   Mrf=-2.42       Mtf=-0.78
  Principal axes:
   T  Val=  5.09  Plg=76  Azm=118
   N        0.88       5        9
   P       -5.98      13      278

 Best Double Couple:Mo=5.5*10**19
  NP1:Strike=  1 Dip=32 Slip=  81
  NP2:       192     59        96
                                      
                                      
               -----##                
          ----------###----           
        ----------#######----         
      -----------#########-----       
    ------------###########------     
   ------------#############------    
   -----------###############-----    
  -   -------################------   
  - P -------################------   
  -   ------#######   #######------   
  ----------####### T #######------   
  ----------#######   #######------   
   ---------#################-----    
   ---------################------    
    --------###############------     
      -------#############-----       
        -----###########-----         
          ----########-----           
               ####---                
                                      

Moment Tensor Solution

Explanation of Parameters
Latest 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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