Accession Number : ADP204453

Title :   High-Frequency Shear Wave Generation at Pre-existing Cracks,

Corporate Author : PHILLIPS LAB HANSCOM AFB MA

Personal Author(s) : Jih, R. S. ; Dainty, A. M.

PDF Url : ADP204453

Report Date : 14 AUG 1995

Pagination or Media Count : 1

Abstract : Recent observational studies indicate that, relative to decoupled explosions, tamped explosions tend to have a larger high frequency Lg/P ratio. Discrimination using such ratios is promising, and yet little is known about the basis for this discriminant. Improved fundamental understanding of the reasons this discriminant may be successful is desired. A plausible explanation offered by Blandford (19S5) is that tamped explosions generate more high-frequency S waves due to the cracks in the source region.

Descriptors :   *SEISMIC DETECTION, *SEISMIC WAVES, *NUCLEAR EXPLOSION DETECTION, *SEISMIC DISCRIMINATION, HIGH FREQUENCY, SYMPOSIA, MONITORING, CRACKS, UNDERGROUND EXPLOSIONS, NUCLEAR EXPLOSION TESTING, WAVE PROPAGATION, ARMS CONTROL, TREATIES, ELASTIC WAVES, SECONDARY WAVES.

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

Distribution Statement : APPROVED FOR PUBLIC RELEASE