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Earthquake Hazards Program

Magnitude 7.6 TONGA REGION

Thursday, March 19, 2009 at 18:17:40 UTC

Global CMT Project Moment Tensor Solution


March 19, 2009, TONGA REGION, MW=7.6

Goran Ekstrom

CENTROID-MOMENT-TENSOR  SOLUTION
GCMT EVENT:     C200903191817A  
DATA: II IU CU IC G  GE 
L.P.BODY WAVES:103S, 269C, T= 50
MANTLE WAVES:  100S, 270C, T=150
SURFACE WAVES: 100S, 239C, T= 50
TIMESTAMP:      Q-20090319181841
CENTROID LOCATION:
ORIGIN TIME:      18:17:54.2 0.1
LAT:23.10S 0.01;LON:174.27W 0.01
DEP: 49.9  0.3;TRIANG HDUR: 15.8
MOMENT TENSOR: SCALE 10**27 D-CM
RR= 3.260 0.017; TT=-0.230 0.010
PP=-3.030 0.011; RT=-0.305 0.037
RP=-0.010 0.032; TP=-1.200 0.007
PRINCIPAL AXES:
1.(T) VAL=  3.288;PLG=85;AZM=190
2.(N)       0.188;     5;     20
3.(P)      -3.476;     1;    290
BEST DBLE.COUPLE:M0= 3.38*10**27
NP1: STRIKE= 15;DIP=44;SLIP=  82
NP2: STRIKE=206;DIP=46;SLIP=  97

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

Global CMT Project Catalog Search

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


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