AUTOMATIC solution, not reviewed by a seismologist, new beta version 12/7/10
More details on this rCMT at http://neic.cr.usgs.gov/beta/rcmt/events/110820181921.2011pvbn
usr/passwd : rcmt/rcmt
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General region :  2011pvbn VANUATU                                           
surface waves  (3.0,3.5,7,7.5 mHz)
Stations used :  CTAO KIP MAJO PET PMG SNZO TAU YSS                                                                 
Origin time: 2011  232  18  19  21
Original location (lat,lon,depth) :     -18.3000    168.200  17   
Moment tensor (x1.e26 dyncm) :
Mrr :      3.005304 Mtt :      0.046171
Mff :     -3.051475 Mrt :      3.191789
Mrf :     -6.219572 Mtf :      1.001590
T-axis:  moment=     7.564   plunge=    56.784  azimuth=    57.592    
N-axis:  moment=     0.236   plunge=     4.609  azimuth=   154.664    
P-axis:  moment=    -7.799   plunge=    32.811  azimuth=   247.644    
best double couple: Mo=    7.681(x1.e26 dyncm)  Mw=7.2  tau= 10.9     
nodal planes (strike/dip/slip):  355.26/ 12.91/111.09     153.68/ 77.97/ 85.29  
Centroid location :  -17.814   168.203    14.554
Centroid time :      8.838
Variance reduction (%) :  63.1
 
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          0-   30-  60-  90-  120- 150- 180- 210- 240- 270- 300- 330-           
z-comp:     1    0    0    0    1    0    2    0    1    1    1    0            
r-comp:     1    0    0    0    1    0    3    0    1    1    0    0            
t-comp:     1    0    0    0    1    0    3    0    1    1    0    0            
Total number of traces used =  21  
number of runs = 11
starttime = Sat Aug 20 12:32:06 MDT 2011
depth loop = Sat Aug 20 13:07:37 MDT 2011 - Sat Aug 20 13:08:08 MDT 2011
Solution produced by inversion of channels with var red > 2%
Initial magnitude 7.0  : depth search was triggered. Initial depth 2 km.
DInit  CMTDep  VarRed
-------------------
020     17.009 63.00
040     28.812 61.73
060     31.600 61.30
100     10.000 60.90
200     241.457 10.03
300     459.902 28.46
400     483.398 28.66
500     518.387 28.27
600     553.864 27.58