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in subjects: "Seismic P Waves 450300"

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Delineation of spall zone from pre/post shot reflections studies: Preliminary results from BEXAR. Los Alamos Source Region Project

In order to delineate the lateral and depth extent of spall from a buried nuclear explosion, we have performed a high-resolution pre- and post-shot seismic reflection survey from BEXAR. Although the data quality were marginal due to poor wave propagation through the volcanic tuffs of Pahute Mesa, a number of interesting differences are observed on the pre- and post-shot surveys. On the pre-shot survey, a reflector (reflector `` 1 ``) is observed at 250 ms (or about 150 m depth) using a stacking… more

Date: December 31, 1992

Creator: Taylor, S. R.; Cogbill, A. H.; Weaver, T. A.; Miller, R. & Steeples, D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Seismic reflection surveys before and after BEXAR at the Nevada Test Site. Los Alamos Source Region Project: Final report

It is believed that spall may have an important effect on various DOE systems designed for verification of -nuclear underground test treaties. The acoustic pulse studied by the Ionospheric Monitoring Program is created specifically by the rapid acceleration of the ground surface of the spall region. Simulation studies indicated that spall effects on surface and body waves may need to be included for proper regional discrimination and yield estimation (Taylor and Randall, 1989). Detailed experim… more

Date: January 7, 1992

Creator: Miller, R. & Steeples, D.