[rCMT] Mw=5.8 NORTH OF ASCENSION ISLAND
USGS research CMT
researchcmt at geohazards.usgs.gov
Fri Sep 5 19:53:08 GMT 2008
AUTOMATIC solution, not reviewed by a seismologist
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General region : 2008wpb6 NORTH OF ASCENSION ISLAND
surface waves (3.0,3.5,7,7.5 mHz)
Stations used : BFO ESK KMBO KONO NNA OTAV SJG SUR
Origin time: 2008 249 19 7 39
Original location (lat,lon,depth) : -1.10000 -13.9000 10
Moment tensor (x1.e26 dyncm) :
Mrr : -0.004662 Mtt : 0.027981
Mff : -0.023319 Mrt : -0.027822
Mrf : 0.028995 Mtf : -0.038432
T-axis: moment= 0.069 plunge= 27.888 azimuth= 211.492
N-axis: moment= -0.020 plunge= 52.751 azimuth= 345.595
P-axis: moment= -0.049 plunge= 22.592 azimuth= 108.771
best double couple: Mo= 0.059(x1.e26 dyncm) Mw=5.8 tau= 2.2
nodal planes (strike/dip/slip): 248.57/ 52.96/175.75 341.13/ 86.61/ 37.12
Centroid location : -0.817 -13.533 18.428
Centroid time : -4.344
Variance reduction (%) : 37
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** oooo o **
* ooo oo *
** ooo------- o **
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**-oo---------------oo **
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0- 30- 60- 90- 120- 150- 180- 210- 240- 270- 300- 330-
z-comp: 0 1 1 0 0 3 0 0 1 0 0 0
r-comp: 0 0 0 0 0 1 0 0 1 1 0 0
t-comp: 0 0 0 0 0 2 0 0 0 1 0 0
Total number of traces used = 12
number of runs = 3
starttime = Fri Sep 5 13:46:46 MDT 2008
endtime = Fri Sep 5 13:53:05 MDT 2008
inversion time = Fri Sep 5 13:53:01 MDT 2008 - Fri Sep 5 13:53:05 MDT 2008
Solution produced by inversion of channels with var red > 2%
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