[rCMT] (Update) Mw=7.7 NORTHERN SUMATRA
USGS research CMT
researchcmt at geohazards.usgs.gov
Tue Apr 6 23:17:10 UTC 2010
Human reviewed
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General region : 2010uupd NORTHERN SUMATRA
surface waves (3.0,3.5,7,7.5 mHz)
Stations used : AAK ARU CASY CTAO DGAR GNI INCN KEV KIV KMBO KONO KURK MAJO PET PMG TAU TIXI TSUM ULN YAK YSS
Origin time: 2010 96 22 15 2
Original location (lat,lon,depth) : 2.20000 97.0000 46
Moment tensor (x1.e26 dyncm) :
Mrr : 16.094568 Mtt : -8.857878
Mff : -7.236691 Mrt : 24.782209
Mrf : -25.101357 Mtf : 6.354293
T-axis: moment= 39.284 plunge= 56.672 azimuth= 46.613
N-axis: moment= -1.694 plunge= 1.226 azimuth= 314.748
P-axis: moment= -37.590 plunge= 33.299 azimuth= 223.943
best double couple: Mo= 38.437(x1.e26 dyncm) Mw=7.7 tau= 18.7
nodal planes (strike/dip/slip): 135.00/ 78.31/ 91.25 308.85/ 11.76/ 83.97
Centroid location : 1.607 96.488 31.539
Centroid time : 17.077
Variance reduction (%) : 65
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0- 30- 60- 90- 120- 150- 180- 210- 240- 270- 300- 330-
z-comp: 1 1 2 0 3 3 4 3 0 3 0 0
r-comp: 0 1 2 0 2 3 2 2 0 1 0 0
t-comp: 0 1 2 0 2 3 2 2 0 1 0 0
Total number of traces used = 46
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