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Here is the solution for the recent event. February 28, 2001, WASHINGTON, Mw=6.8 Natasha Maternovskaya Goran Ekstrom CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME C022801C DATA USED: GSN L.P. BODY WAVES: 36S,100C, T= 45 MANTLE WAVES: 30S, 70C, T=135 CENTROID LOCATION: ORIGIN TIME 18:54:36.5 0.1 LAT 47.02N 0.01;LON 122.54W 0.01 DEP 52.9 0.8;HALF-DURATION 6.2 MOMENT TENSOR; SCALE 10**26 D-CM MRR=-0.97 0.01; MTT=-0.12 0.01 MFF= 1.09 0.01; MRT=-0.03 0.02 MRF=-1.40 0.02; MTF= 0.04 0.01 PRINCIPAL AXES: 1.(T) VAL= 1.80;PLG=27;AZM= 92 2.(N) -0.12; 0; 1 3.(P) -1.68; 63; 271 BEST DOUBLE COUPLE:M0=1.7*10**26 NP1:STRIKE=183;DIP=18;SLIP= -89 NP2: 1; 72; -90 ###---##### ###--------######## ###-----------######### ###-------------########### ###---------------########### ###----------------############ ##-----------------############ ###------- -------############# ###------- P -------####### ### ###------- -------####### T ### ###-----------------####### ### ##-----------------############ ###----------------############ ###--------------############ ###-------------########### ###----------########## ###--------######## ##----##### --------------------------------------------------------------------------
- Subtract 8 hours from Greenwich Mean Time to obtain PST or 4 hours for EST
- Location Quality: A (good), B (fair), C (poor), D (bad)
- Magnitude: Ml (local or Richter magnitude), Lg (mblg), Md (duration), Mb (body wave), Ms (surface wave), Mw (moment)
- Standard Sources Include:
- U.S. Geological Survey, National Earthquake Information Center, Golden, CO (NEIC)
- Harvard Geophysical Observatory, Harvard University, Cambridge, MA (HRV)
- U.S. Geological Survey, Northern California Seismic Network (NCSN)
- University of California, Berkeley, Seismological Laboratory (UCBSL)
- California Institute of Technology, Pasadena, California (Caltech)
- various wire reports and/or personal communications
- All data are preliminary and subject to change.
- Copyright © 2001 Advanced Geologic Exploration, Inc.
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