logo - home






Current time: 2014-09-01 11:45:21 UTC
You are here : EMSC > Earthquake > Full tensors solutions
    About EMSC

Full tensors solutions

To: vallee@geoazur.unice.fr
From: scardec@geoazur.unice.fr
Subject:  [SCARDEC] Recent Mw=6.4 earthquake, located in ANDREANOF ISLANDS, ALEUTIAN IS., ALASKA
Message-Id: <20120927002440.A5794E743FE@alto.unice.fr>
Date: Thu, 27 Sep 2012 02:24:40 +0200 (CEST)

2012 09 26 23 39 59.0 51.583 -178.200 15.0 6.4 196 59 -38 308 58 -142
INDICATIF_SEISME 20120926_233959_ANDREANOF_ISLANDS__ALEUTIAN_IS.__ALASKA

##########################################################
Errors-To: researchcmt-bounces@geohazards.usgs.gov

USGS research CMT: maintained and developed by Jascha Polet at Cal Poly Pomona.
This is a research system and solutions are *not* official USGS earthquake magnitudes.
AUTOMATIC solution, not reviewed by a seismologist, new beta version 2/13/12
More details on this rCMT at http://neic.cr.usgs.gov/beta/rcmt/events/120926233958.C000CWNI
usr/passwd : rcmt/rcmt
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
General region :  C000CWNI ANDREANOF ISLANDS, ALEUTI                         
surface waves  (3.0,3.5,7,7.5 mHz)
Stations used :  COR KBS KIP MAJO ULN YSS                                                                           
Origin time: 2012  270  23  39  58
Origin time reformatted: 2012-09-26 23:39:58
Original location (lat,lon,depth) :  51.6  -178.2 34              
Moment tensor (x1.e26 dyncm) :
Mrr :     -0.323236 Mtt :     -0.184134
Mff :      0.507370 Mrt :      0.263436
Mrf :     -0.093087 Mtf :     -0.250974
T-axis:  moment=     0.621   plunge=    10.806  azimuth=    69.277    
N-axis:  moment=    -0.088   plunge=    38.084  azimuth=   330.674    
P-axis:  moment=    -0.533   plunge=    49.858  azimuth=   172.357    
best double couple: Mo=    0.577(x1.e26 dyncm)  Mw=6.4  tau=  4.6     
nodal planes (strike/dip/slip):  310.18/ 65.92/-132.50     196.18/ 47.69/-33.48 
Centroid location :   51.082  -177.988    20.911
Centroid time :      2.438
Variance reduction (%) :  71.2

                   ***********              
               ****     ooooo-****          
            ***       ooo---------***       
          **        ooo -------------**     
         **oooooooooo   --------------**    
        *----    oooooo  ---------------*   
       *-----   oo    oooo---------------*  
      **------  o        ooo------------T** 
      *------- oo          ooo------------* 
     **------- o             ooo----------**
     **-------o         +      ooo--------**
     **-------o                  oo-------**
      *-------o                   oo------* 
      **------o                    oo----** 
       *------o                     oo---*  
        *-----oo         P           oo *   
         **--- o                      **    
          **-- oo                    **     
            *** oo                ***       
               ****o          ****          
                   ***********              

          0-   30-  60-  90-  120- 150- 180- 210- 240- 270- 300- 330-           
z-comp:     0    1    0    1    0    0    1    0    1    1    0    0            
r-comp:     0    0    0    1    0    0    1    0    2    1    0    0            
t-comp:     0    1    0    0    0    0    1    0    2    1    0    0            
Total number of traces used =  15  
number of runs = 7
starttime = Wed Sep 26 17:56:49 MDT 2012
depth loop = Wed Sep 26 18:11:07 MDT 2012 - Wed Sep 26 18:11:16 MDT 2012
Solution produced by inversion of channels with var red > 2%
Initial magnitude 6.9  : depth search was triggered. Initial depth 40 km.
DInit  CMTDep  VarRed
-------------------
020     34.301 23.61
040     48.973 23.56
060     58.900 22.78
100     75.082 21.07
200     339.942 11.28
300     429.550 8.78
400     442.850 7.48
500     456.999 7.86
600     459.984 8.54
_______________________________________________
researchCMT mailing list
You cannot post to this mailing list. It is for distribution only.
Questions comments? Ask Jascha, researchcmt-owner@geohazards.cr.usgs.gov
Archive: http://geohazards.cr.usgs.gov/pipermail/researchcmt/
To unsubscribe: https://geohazards.usgs.gov/mailman/listinfo/researchcmt

##########################################################
To: eqinfo-mt@gfz-potsdam.de
X-Original-Message-ID: <5063fa93.9LEzhnH+ji81RoLa%eqinfo@gfz-potsdam.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Message-ID: 
Subject: MT solution GFZ event gfz2012szhe

GFZ Event gfz2012szhe
12/09/26 23:39:57.20
Andreanof Islands, Aleutian Islands
Epicenter: 51.54 -178.33
MW 6.4

GFZ MOMENT TENSOR SOLUTION
Depth  15         No. of sta: 74
Moment Tensor;   Scale 10**18 Nm
  Mrr=-2.96       Mtt=-1.11
  Mpp= 4.07       Mrt= 2.00
  Mrp= 0.37       Mtp=-1.11
Principal axes:
  T  Val=  4.83  Plg= 2  Azm= 70
  N       -0.33      37      338
  P       -4.50      53      163

Best Double Couple:Mo=4.7*10**18
 NP1:Strike=192 Dip=54 Slip= -40
 NP2:       309     58      -134

           --------###           
        ---------########        
     ----------#############     
    ###-------###############    
  ##########--#################  
  ##########------#############  
 ##########---------############ 
##########------------###########
##########--------------#########
#########----------------########
#########-----------------#######
#########------------------######
 ########--------   --------#### 
  #######-------- P --------###  
  ########-------   ---------##  
    ######-------------------    
     ######-----------------     
        ####-------------        
           ##---------           


#############################################################
This message is sent to you because you are subscribed to
  the mailing list .
To unsubscribe, E-mail to: 
To switch to the DIGEST mode, E-mail to 
To switch to the INDEX mode, E-mail to 
Send administrative queries to  


##########################################################
To: cmtcustomers@ldeo.columbia.edu
Subject: quick CMT: 2012/09/26, 23:39:54.5, ANDREANOF ISLANDS, ALEUTIAN IS., MW=6.4
X-Scanned-By: MIMEDefang 2.49 on 129.236.10.30


Here is the solution for the recent event.

September 26, 2012, ANDREANOF ISLANDS, ALEUTIAN IS., MW=6.4

Howard Koss

CENTROID-MOMENT-TENSOR  SOLUTION
GCMT EVENT:     C201209262339A  
DATA: II LD IU DK CU MN G  IC GE
L.P.BODY WAVES:144S, 355C, T= 40
MANTLE WAVES:  128S, 238C, T=125
SURFACE WAVES: 146S, 372C, T= 50
TIMESTAMP:      Q-20120927055440
CENTROID LOCATION:
ORIGIN TIME:      23:39:58.3 0.0
LAT:51.54N 0.00;LON:178.03W 0.00
DEP: 13.4  0.2;TRIANG HDUR:  4.0
MOMENT TENSOR: SCALE 10**25 D-CM
RR=-2.700 0.022; TT=-1.900 0.020
PP= 4.600 0.023; RT= 2.300 0.062
RP= 1.920 0.059; TP=-2.630 0.018
PRINCIPAL AXES:
1.(T) VAL=  5.677;PLG= 8;AZM=253
2.(N)      -0.054;    44;    351
3.(P)      -5.623;    45;    155
BEST DBLE.COUPLE:M0= 5.65*10**25
NP1: STRIKE=305;DIP=53;SLIP=-150
NP2: STRIKE=196;DIP=66;SLIP= -40

            ----------#           
        ------------#######       
      ------------###########     
    --######-----##############   
   #############--##############  
  #############------############ 
  ############----------######### 
 ############-------------########
 ############--------------#######
 ###########----------------######
    ########-----------------#####
  T ########------------------### 
    ########--------   --------## 
   ########--------- P --------#  
    ########--------   --------   
      ######-----------------     
        ####---------------       
            #----------           


##########################################################
To: alert@emsc-csem.org, zirbes@usgs.gov
Subject: USGS Body-Wave Moment Tensor Solution

12/09/26 23:39:57.73

Epicenter:  51.585 -178.231
MW 6.4

USGS MOMENT TENSOR SOLUTION
Depth   8         No. of sta: 128
Moment Tensor;   Scale 10**18 Nm
  Mrr=-1.98       Mtt=-1.33
  Mpp= 3.31       Mrt= 2.19
  Mrp= 0.98       Mtp=-2.19
 Principal axes:
  T  Val=  4.18  Plg= 1  Azm=249
  N        0.31      46      340
  P       -4.49      44      158

Best Double Couple:Mo=4.3*10**18
 NP1:Strike=194 Dip=62 Slip= -35
 NP2:       302     60      -147


##########################################################