[rCMT] Mw=5.8 NORTHERN MID-ATLANTIC RIDGE
USGS research CMT
researchcmt at geohazards.cr.usgs.gov
Thu Oct 18 16:44:18 GMT 2007
AUTOMATIC solution, not reviewed by a seismologist
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General region : 2007iqa4 NORTHERN MID-ATLANTIC RID
surface waves (3.0,3.5,7,7.5 mHz)
Stations used : BFO ESK FFC KONO OTAV SDV SFJD SJG WCI
Origin time: 2007 291 16 13 14
Original location (lat,lon,depth) : 30.1000 -42.6000 10
Moment tensor (x1.e26 dyncm) :
Mrr : -0.018816 Mtt : 0.028468
Mff : -0.009653 Mrt : 0.024789
Mrf : 0.011151 Mtf : 0.044428
T-axis: moment= 0.066 plunge= 17.544 azimuth= 327.356
N-axis: moment= -0.026 plunge= 65.157 azimuth= 100.423
P-axis: moment= -0.040 plunge= 17.017 azimuth= 231.804
best double couple: Mo= 0.053(x1.e26 dyncm) Mw=5.8 tau= 2.1
nodal planes (strike/dip/slip): 9.49/ 65.16/179.61 99.65/ 89.64/ 24.81
Centroid location : 30.727 -43.147 10.000
Centroid time : 3.635
Variance reduction (%) : 37
***********
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**----T------------o- **
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*-------------------- o *
*-------------------- o *
**------------------ o **
*----------------- o *
**---------o--- o **
** oooo+oooo o **
** oo o **
* o *
** oo -**
* o -----*
* P oo -------*
** oo --------**
** oo ---------**
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***********
0- 30- 60- 90- 120- 150- 180- 210- 240- 270- 300- 330-
z-comp: 0 0 0 0 2 0 0 1 1 1 2 0
r-comp: 0 0 0 0 3 0 1 1 0 0 0 0
t-comp: 0 0 0 0 2 0 0 1 1 0 0 0
Total number of traces used = 16
number of runs = 6
starttime = Thu Oct 18 10:29:25 MDT 2007
endtime = Thu Oct 18 10:44:15 MDT 2007
inversion time = Thu Oct 18 10:44:09 MDT 2007 - Thu Oct 18 10:44:15 MDT 2007
Solution produced by inversion of channels with var red > 2%
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