Testimonies, photostemp
Full tensors solutions
To: vallee@geoazur.unice.fr
From: scardec@geoazur.unice.fr
Subject: [SCARDEC] Recent Mw=5.7 earthquake, located in TONGA
Message-Id: <20120818182847.7542AE743FF@alto.unice.fr>
Date: Sat, 18 Aug 2012 20:28:47 +0200 (CEST)
2012 08 18 17 45 02.0 -15.582 -173.095 19.0 5.7 155 30 64 4 63 104
INDICATIF_SEISME 20120818_174502_TONGA
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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/120818174502.C000C2NP
usr/passwd : rcmt/rcmt
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General region : C000C2NP TONGA
surface waves (3.0,3.5,7,7.5 mHz)
Stations used : CTAO KIP MAJO PET PMG SNZO TAU
Origin time: 2012 231 17 45 2
Origin time reformatted: 2012-08-18 17:45:02
Original location (lat,lon,depth) : -15.6 -173.1 10
Moment tensor (x1.e26 dyncm) :
Mrr : 0.062283 Mtt : -0.011564
Mff : -0.050719 Mrt : 0.066953
Mrf : -0.031884 Mtf : -0.008768
T-axis: moment= 0.108 plunge= 58.162 azimuth= 21.973
N-axis: moment= -0.045 plunge= 18.038 azimuth= 143.605
P-axis: moment= -0.063 plunge= 25.282 azimuth= 242.453
best double couple: Mo= 0.086(x1.e26 dyncm) Mw=5.9 tau= 2.4
nodal planes (strike/dip/slip): 6.70/ 25.48/136.03 137.75/ 72.62/ 71.07
Centroid location : -15.637 -172.648 25.361
Centroid time : 6.116
Variance reduction (%) : 18.5
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0- 30- 60- 90- 120- 150- 180- 210- 240- 270- 300- 330-
z-comp: 0 0 0 0 0 0 0 1 1 1 1 1
r-comp: 0 0 0 0 0 1 1 0 1 1 0 1
t-comp: 0 0 0 0 0 0 0 0 1 1 0 1
Total number of traces used = 13
number of runs = 12
starttime = Sat Aug 18 12:06:56 MDT 2012
Solution produced by inversion of channels with var red > 2%
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To: eqinfo-mt@gfz-potsdam.de
X-Original-Message-ID: <502febff.kghwPuuI6V4N5vyR%eqinfo@gfz-potsdam.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Message-ID:
Subject: MT solution GFZ event gfz2012qfov
GFZ Event gfz2012qfov
12/08/18 17:45:03.10
Samoa Islands Region
Epicenter: -15.65 -172.88
MW 5.7
GFZ MOMENT TENSOR SOLUTION
Depth 29 No. of sta: 51
Moment Tensor; Scale 10**17 Nm
Mrr= 5.20 Mtt=-1.22
Mpp=-3.98 Mrt= 1.14
Mrp=-0.87 Mtp=-1.22
Principal axes:
T Val= 5.47 Plg=79 Azm= 28
N -1.39 9 175
P -4.07 6 266
Best Double Couple:Mo=4.9*10**17
NP1:Strike=167 Dip=52 Slip= 78
NP2: 6 40 104
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To: cmtcustomers@ldeo.columbia.edu
Subject: quick CMT: 2012/08/18, 17:45: 2.2, TONGA ISLANDS, MW=5.7
X-Scanned-By: MIMEDefang 2.49 on 129.236.10.30
Here is the solution for the recent event.
August 18, 2012, TONGA ISLANDS, MW=5.7
Meredith Nettles
Goran Ekstrom
CENTROID-MOMENT-TENSOR SOLUTION
GCMT EVENT: C201208181745A
DATA: II LD IU DK CU MN G IC GE
L.P.BODY WAVES:128S, 245C, T= 40
MANTLE WAVES: 68S, 76C, T=125
SURFACE WAVES: 136S, 262C, T= 50
TIMESTAMP: Q-20120818184859
CENTROID LOCATION:
ORIGIN TIME: 17:45:09.5 0.1
LAT:15.56S 0.01;LON:172.57W 0.01
DEP: 18.9 0.3;TRIANG HDUR: 1.8
MOMENT TENSOR: SCALE 10**24 D-CM
RR= 3.950 0.048; TT= 0.366 0.037
PP=-4.320 0.041; RT= 0.020 0.089
RP= 2.920 0.099; TP= 0.603 0.030
PRINCIPAL AXES:
1.(T) VAL= 4.886;PLG=72;AZM=278
2.(N) 0.414; 4; 175
3.(P) -5.304; 17; 84
BEST DBLE.COUPLE:M0= 5.10*10**24
NP1: STRIKE=167;DIP=28;SLIP= 81
NP2: STRIKE=357;DIP=63;SLIP= 95
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To: alert@emsc-csem.org, zirbes@usgs.gov
Subject: USGS Body-Wave Moment Tensor Solution
12/08/18 17:45:01.95
Epicenter: -15.592 -173.075
MW 5.7
USGS MOMENT TENSOR SOLUTION
Depth 11 No. of sta: 40
Moment Tensor; Scale 10**17 Nm
Mrr= 3.37 Mtt=-0.80
Mpp=-2.56 Mrt= 0.89
Mrp= 2.11 Mtp=-1.03
Principal axes:
T Val= 4.10 Plg=72 Azm=292
N -0.33 1 24
P -3.78 18 114
Best Double Couple:Mo=4.0*10**17
NP1:Strike= 24 Dip=63 Slip= 89
NP2: 206 27 92
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