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Earthquake Hazards Program

Magnitude 5.5 TONGA REGION

Saturday, April 04, 2009 at 11:07:13 UTC

Global CMT Project Moment Tensor Solution


April 4, 2009, TONGA REGION, MW=5.5
 
Goran Ekstrom
Meredith Nettles

CENTROID-MOMENT-TENSOR  SOLUTION
GCMT EVENT:     C200904041107A  
DATA: II IU CU IC G  GE 
L.P.BODY WAVES: 72S, 117C, T= 40
MANTLE WAVES:   31S,  33C, T=125
SURFACE WAVES: 102S, 209C, T= 50
TIMESTAMP:      Q-20090404191514
CENTROID LOCATION:
ORIGIN TIME:      11:07:12.6 0.1
LAT:22.66S 0.01;LON:174.12W 0.01
DEP: 12.0  FIX;TRIANG HDUR:  1.3
MOMENT TENSOR: SCALE 10**24 D-CM
RR= 1.700 0.022; TT=-0.378 0.021
PP=-1.330 0.018; RT= 0.459 0.060
RP= 0.926 0.052; TP=-0.815 0.016
PRINCIPAL AXES:
1.(T) VAL=  1.984;PLG=75;AZM=293
2.(N)       0.088;     2;     29
3.(P)      -2.080;    15;    119
BEST DBLE.COUPLE:M0= 2.03*10**24
NP1: STRIKE=212;DIP=30;SLIP=  93
NP2: STRIKE= 28;DIP=60;SLIP=  88

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

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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