Accession Number : ADP204419

Title :   A Transportable Regional Discriminant Using a Maximum Likelihood Analysis of Surface Waves,

Corporate Author : S-CUBED LA JOLLA CA

Personal Author(s) : Stevens, J. L. ; McLaughlin, K. L.

PDF Url : ADP204419

Report Date : 14 AUG 1995

Pagination or Media Count : 1

Abstract : The objective of this research is to develop a robust extension of the mb:Ms discriminant that is: (1) transportable from region to region, (2) optimizeable for each region, (3) frequency independent, (4) usable at regional and teleseismic distances, (5) applicable to small magnitude events, (6) able to determine an upper bound in the absence of surface wave data, (7) robust with respect to regional variations and operational considerations, (8) usable in an operational system. The product of this research will be a procedure to analyze surface waves from earthquakes, explosions, and other seismic sources, and to form a discriminant, an extension of the mb:Ms discriminant, that can be implemented in an automated, semi-automated, or interactive system. The research will test the procedure on a broad range of data to determine the range of reliability, minimum magnitude for which the method provides reliable results, limitations and unusual conditions that might cause the analysis procedure or discriminant to fall.

Descriptors :   *SEISMIC DETECTION, *SEISMIC WAVES, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *SEISMIC DISCRIMINATION, *EARTHQUAKES, SYMPOSIA, SURFACE WAVES, MAXIMUM LIKELIHOOD ESTIMATION, UNDERGROUND EXPLOSIONS, TREATIES.

Subject Categories : Government and Political Science
      Snow, Ice and Permafrost
      Seismic Detection and Detectors
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE