Accession Number:

ADA023295

Title:

Waves, Rays and Discriminants

Descriptive Note:

Final rept. 1 Oct 1973-30 Sep 1975

Corporate Author:

CALIFORNIA UNIV SAN DIEGO LA JOLLA

Personal Author(s):

• Gilbert, Freeman

Report Date:

1975-10-31

Pagination or Media Count:

72.0

Abstract:

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.

Descriptors:

• *SEISMIC DATA
• *SEISMIC WAVES
• *SEISMOLOGICAL STATIONS
• *SIGNAL PROCESSING
• DISCRIMINATION
• EARTHQUAKES
• KOREA
• MATCHED FILTERS
• MEXICO
• NETWORKS
• NEW MEXICO
• PACIFIC OCEAN ISLANDS
• PERU
• POWER SPECTRA
• SEISMIC SIGNATURES
• SOURCES

Subject Categories:

• Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE