Accession Number:

ADA030060

Title:

Analysis of Explosively Generated Ground Motions Using Fourier Techniques,

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s):

Report Date:

1976-08-01

Pagination or Media Count:

93.0

Abstract:

Fourier transforms of selected ground-motion time histories from five underground high-explosive and nuclear detonations are used to define the transmission properties Transfer functions of three rock types. Absorption, a measure of a rocks energy dissipating characteristics, is expressed for each of the tests as a function of the frequency of transmission. Dispersion results from a variation in transmission velocity with frequency and is described for each test by a phase velocity spectrum. The transmission properties from one of the sites are used to predict a ground-motion time history at that site from another nuclear event. The potential use of Fourier techniques to make ground-motion predictions and to measure in-situ material properties is discussed. Author

Subject Categories:

  • Numerical Mathematics
  • Ammunition and Explosives
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE