Accession Number : ADP204457

Title :   Advances in Modeling Wave Propagation,

Corporate Author : MAXWELL LABS INC LA JOLLA CA S-CUBED DIV

Personal Author(s) : McLaughlin, Keith L.

PDF Url : ADP204457

Report Date : 14 AUG 1995

Pagination or Media Count : 1

Abstract : The statistics of regional seismograms as a function of source type, depth, distance, and frequency are not generally available for regions of the world where seismic and human activity has not provided an historic database of earthquakes, nuclear explosions, large industrial blasts, mine bumps, and rockbursts. Therefore, it is expected that future seismic discrimination practice may rely in part upon theoretical transportation of discriminants tested in regions of the world where various source types are historically available. In order to perform such a theoretical transport of a discrimmant, we require an understanding of the discriminant's statistics for all source types in both the old and the new crustal structures. In this talk we review numerical efforts to model regional seismograms in CTBT research. We categorize these methods as procedures that attempt to model the average 1D layered crustal structure, 2D crustal sections as approximations to lateral heterogeneity, and methods that attempt to model propagation in 3D lateral heterogeneity. The relative merits of the various proposed synthesis methods will be discussed regarding efficiency, completeness, and accuracy. A list of research topics and questions will be presented with examples from some recent work by CTBT researchers.

Descriptors :   *SEISMIC DETECTION, *SEISMIC WAVES, *ARMS CONTROL, *NUCLEAR EXPLOSION DETECTION, *EARTHQUAKES, DATA BASES, SYMPOSIA, MONITORING, NUCLEAR EXPLOSION TESTING, MINING ENGINEERING, SEISMIC DATA, WAVE PROPAGATION, EARTH CRUST, SEISMIC DISCRIMINATION, TREATIES.

Subject Categories : Government and Political Science
      Seismology
      Seismic Detection and Detectors
      Nuclear Weapons

Distribution Statement : APPROVED FOR PUBLIC RELEASE