[rCMT] Mw=5.8 CENTRAL MID-ATLANTIC RIDGE
USGS research CMT
researchcmt at geohazards.cr.usgs.gov
Mon Aug 20 13:16:53 GMT 2007
AUTOMATIC solution, not reviewed by a seismologist
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General region : 2007ggaw CENTRAL MID-ATLANTIC RIDG
surface waves (3.0,3.5,7,7.5 mHz)
Stations used : BFO ESK LSZ LVC SDV SJG SUR TSUM
Origin time: 2007 232 12 37 6
Original location (lat,lon,depth) : -0.200000 -18.2000 10
Moment tensor (x1.e26 dyncm) :
Mrr : -0.017010 Mtt : 0.021829
Mff : -0.004819 Mrt : -0.058721
Mrf : 0.019611 Mtf : -0.038652
T-axis: moment= 0.085 plunge= 30.771 azimuth= 210.205
N-axis: moment= -0.024 plunge= 22.897 azimuth= 105.640
P-axis: moment= -0.061 plunge= 50.003 azimuth= 345.415
best double couple: Mo= 0.073(x1.e26 dyncm) Mw=5.8 tau= 2.3
nodal planes (strike/dip/slip): 101.21/ 79.63/-113.30 348.53/ 25.38/-24.82
Centroid location : -0.249 -18.529 20.918
Centroid time : -3.239
Variance reduction (%) : 29
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** o **
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** oooo o **
**-----oooooo- + o **
**-----------ooooooooo o **
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0- 30- 60- 90- 120- 150- 180- 210- 240- 270- 300- 330-
z-comp: 0 2 1 0 0 2 0 0 2 1 0 0
r-comp: 0 0 0 0 0 1 0 0 0 1 0 0
t-comp: 0 0 1 0 0 2 0 0 1 1 0 0
Total number of traces used = 15
number of runs = 7
starttime = Mon Aug 20 07:00:39 MDT 2007
endtime = Mon Aug 20 07:16:51 MDT 2007
inversion time = Mon Aug 20 07:16:46 MDT 2007 - Mon Aug 20 07:16:51 MDT 2007
Solution produced by inversion of channels with var red > 2%
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