The ANSS event ID is usp0006vmm and the event page is at https://earthquake.usgs.gov/earthquakes/eventpage/usp0006vmm/executive.
1995/04/14 00:32:55 30.285 -103.347 17.8 5.61 Texas
USGS/SLU Moment Tensor Solution ENS 1995/04/14 00:32:55:0 30.285 -103.347 17.8 5.6 Texas Stations used: Filtering commands used: Best Fitting Double Couple Mo = 3.27e+24 dyne-cm Mw = 5.61 Z = 20 km Plane Strike Dip Rake NP1 114 64 -101 NP2 318 28 -69 Principal Axes: Axis Value Plunge Azimuth T 3.27e+24 18 212 N 0.00e+00 10 119 P -3.27e+24 69 2 Moment Tensor: (dyne-cm) Component Value Mxx 1.70e+24 Mxy 1.32e+24 Mxz -1.92e+24 Myy 8.36e+23 Myz -5.55e+23 Mzz -2.53e+24 ############## ###################### #----------------########### ----------------------######## --------------------------######## -----------------------------####### --------------------------------###### ##----------------- ------------###### ###---------------- P -------------##### ######-------------- --------------##### ########-----------------------------##### ##########----------------------------#### ############--------------------------#### ##############-----------------------### ##################-------------------### #######################-------------## ##################################-- ###### ########################- #### T ####################### ### ###################### ###################### ############## Global CMT Convention Moment Tensor: R T P -2.53e+24 -1.92e+24 5.55e+23 -1.92e+24 1.70e+24 -1.32e+24 5.55e+23 -1.32e+24 8.36e+23 Details of the solution is found at http://www.eas.slu.edu/eqc/eqc_mt/MECH.NA/19950414003255/index.html |
STK = 114 DIP = 64 RAKE = -101 MW = 5.61 HS = 20
The NDK file is 19950414003255.ndk
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Older earthquake were studied using analog seismograms, which were digitized and analyzed. The original data are not longer available. However focal mechanism solutions based on the waveforms are given in published literature. At the same time, a given earthquake may have been analyzed independently, and the reference is given here.
For this earthquake the source reference is the following:
Chang, T.-M. (1997). Evaluation of Surface-Wave Waveform Modeling for Lithosphere Velocity Structure, Ph.D. Disserations, Saint Louis University, PDF 3,167 kbytes ).
The CUS model used for the waveform synthetic seismograms and for the surface wave eigenfunctions and dispersion is as follows (The format is in the model96 format of Computer Programs in Seismology).
MODEL.01 CUS Model with Q from simple gamma values ISOTROPIC KGS FLAT EARTH 1-D CONSTANT VELOCITY LINE08 LINE09 LINE10 LINE11 H(KM) VP(KM/S) VS(KM/S) RHO(GM/CC) QP QS ETAP ETAS FREFP FREFS 1.0000 5.0000 2.8900 2.5000 0.172E-02 0.387E-02 0.00 0.00 1.00 1.00 9.0000 6.1000 3.5200 2.7300 0.160E-02 0.363E-02 0.00 0.00 1.00 1.00 10.0000 6.4000 3.7000 2.8200 0.149E-02 0.336E-02 0.00 0.00 1.00 1.00 20.0000 6.7000 3.8700 2.9020 0.000E-04 0.000E-04 0.00 0.00 1.00 1.00 0.0000 8.1500 4.7000 3.3640 0.194E-02 0.431E-02 0.00 0.00 1.00 1.00