Effect of source depth correction on the estimation of earthquake size

Details Effect of source depth correction on the estimation of earthquake size Effect of source depth correction on the estimation of earthquake size

May 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22.1017r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 9, p. 1017-1019

Mathematics

Logic

3

Correction, Depth, Earthquakes, Estimating, Seismic Waves, Surface Waves, Tectonics, Correlation Coefficients, Earth Crust, Geological Faults, Regression Analysis, Stress Distribution

Scientific paper

The relationship between surface wave magnitude, M(9sub s), and seismic moment, M(sub 0), of earthquakes is essential for the estimation of seismic risk in any region. In the hypothesis of constant stress drop, theoretical models predict that Log M(9sub 0) and M(sub s) are related by a linear law. The slope most commonly found in the literature is around 1.5. The application to the M(sub s) values of the necessary correction for the focal depth, gives a general increment of the correlation coefficient. A slope around 1.0 is consistent with the global data, while for regionalized data it can vary from about 1.0 to 2.0.

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