Accession Number:

ADA110181

Title:

The Investigation of the Combined Use of Microbarometric and Seismic Data to Detect and Identify Infrasonic Signals

Descriptive Note:

Semi-Annual rept. no. 1, 1 Apr-30 Sep 1981

Corporate Author:

TELEDYNE GEOTECH GARLAND TX

Personal Author(s):

Report Date:

1981-12-30

Pagination or Media Count:

23.0

Abstract:

There is a need to acquire an infrasonics monitoring capability to supplement existing atmospheric nuclear test surveillance systems. A research program to investigate the combined use of a three-component seismograph and a microbarograph to supply the desired monitoring capability is currently underway. A temporary observatory consisting of a five-element microbarograph array and a three-component, long-period seismograph system has been established near McKinney, Texas, to acquire the experimental data necessary to perform the investigation. Preliminary analysis of the data indicates that the infrasonic signal-to-noise ratio will be greater at the output of a vertical seismograph than at the output of a microbarograph in a frequency range extending roughly from 0.005 Hz to 0.05 Hz during intervals of atmospheric turbulence.

Subject Categories:

  • Atmospheric Physics
  • Seismic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE