Waves, Rays and Discriminants
Final rept. 1 Oct 1973-30 Sep 1975
CALIFORNIA UNIV SAN DIEGO LA JOLLA
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A method has been developed for retrieving the seismic source mechanism by using a sparse network of seismographic stations. The method is based on matched filtering followed by deconvolution for the seismic moment tensor. The method requires well-calibrated instruments. The seismic moment tensor is decomposed into its deviatoric earthquake-like and isotropic explosion-like parts which together form a basis for discrimination. Very preliminary applications of the method are successful and encouraging, but the full potential of the method has not been established.