Accession Number:

ADA046569

Title:

Seismic Studies for Improved Yield Determination

Descriptive Note:

Quarterly technical rept. no. 1, 1 Oct-31 Dec 1976

Corporate Author:

SYSTEMS SCIENCE AND SOFTWARE LA JOLLA CA

Report Date:

1977-01-01

Pagination or Media Count:

86.0

Abstract:

The main objective of this contract is to examine the parameters that affect the seismic signals from underground explosions. Results are presented from research in five areas 1 Theoretical teleseismic magnitudes M sub s and m sub b were determined for a series of nuclear explosion cratering calculations 2 The relative frequency content of signals from U.S.S.R. and U.S. explosions were studied by comparing the periods of the first few cycles of recordings from several stations at teleseismic ranges 3 Some improved techniques were developed for computing the equivalent point source representation for explosions in highly porous materials 4 The dependence of body wave magnitude on yield for underground explosions in salt was studied and compared to that for explosions in granite and 5 Small scale experiments were carried out in which underground explosions were modeled by 0.25 gram charges embedded in concrete.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE