Accession Number:

AD0736946

Title:

Spectral Characteristics of Infrasonic Waves and Related Seismic Research

Descriptive Note:

Final scientific rept. 15 Sep 1968-30 Sep 1971

Corporate Author:

SAN CALIXTO OBSERVATORY LA PAZ (BOLIVIA)

Personal Author(s):

Report Date:

1971-11-01

Pagination or Media Count:

31.0

Abstract:

The infrasonic array at Penas, La Paz, was enlarged from 4 to 7 microbarographs with an asymmetric disposition, covering an area of about 250 sq km a digital recorder and an electronic integrator were added French portable microbarographs were used for comparison and supplementary experiments. Acoustic and seismic data obtained was used for research at Observatorio San Calixto and at different research centers in the United States. Spectral analysis and correlations were made for relevant acoustic and seismic signals and infrasonic noise from them, the following values could be calculated mainly through computing programs azimuth of arrival signals incoherence of noise by coupling between solid earth and atmosphere structure of the crust near La Paz seismic energy liberation in the region for P seismic waves earthquake focal mechanism. Some other aspects of seismicity were studied prospecting for earthquake prediction.

Subject Categories:

  • Atmospheric Physics
  • Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE