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Harvard Moment Tensor Solution

Magnitude 9.1 OFF THE WEST COAST OF NORTHERN SUMATRA
Sunday, December 26, 2004 at 00:58:53 UTC

This is a REVISED solution for today's earthquake near Sumatra.
The solution includes approximately the first 9 hours of data 
recorded after the earthquake. Owing to the large size of the 
earthquake, the short-period cutoff for the analysis was set 
to 300 s.

December 26, 2004, OFF W COAST OF NORTHERN SUMATRA, MW=9.0

Meredith Nettles
Goran Ekstrom

CENTROID, MOMENT TENSOR SOLUTION
HARVARD EVENT-FILE NAME M122604A
DATA USED: GSN
MANTLE WAVES:    73S,202C, T=300
CENTROID LOCATION:
ORIGIN TIME       01:01: 9.0 0.3
LAT  3.09N 0.04;LON  94.26E 0.03
DEP  28.6 1.3;HALF-DURATION 95.0
MOMENT TENSOR; SCALE 10**29 D-CM
  MRR= 1.04 0.01; MTT=-0.43 0.01
  MPP=-0.61 0.01; MRT= 2.98 0.16
  MRP=-2.40 0.16; MTP= 0.43 0.00
 PRINCIPAL AXES:
 1.(T) VAL=  4.01;PLG=52;AZM= 36
 2.(N)      -0.12;     3;    130
 3.(P)      -3.89;    38;    222
BEST DOUBLE COUPLE:M0=4.0*10**29
 NP1:STRIKE=329;DIP= 8;SLIP= 110
 NP2:STRIKE=129;DIP=83;SLIP=  87

            -#######---           
        #################--       
      #####################--     
    -########################--   
   ----#############   #######--  
  ------############ T ########-- 
  --------##########   #########- 
 -----------#####################-
 -------------###################-
 ---------------#################-
 ------------------##############-
  -------------------############ 
  -------   ------------########- 
   ------ P --------------#####-  
    -----   -------------------   
      -----------------------     
        -------------------       
            -----------           


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