Accession Number : AD0779521

Title :   Seismic Propagation Mapping of Tropic Sensor Test Grids.

Descriptive Note : Final rept. 4 Nov-5 Dec 71,

Corporate Author : ARMY TROPIC TEST CENTER APO NEW YORK 09827

Personal Author(s) : Marcuson,W. F. , III ; Leach,R. E.

Report Date : NOV 1972

Pagination or Media Count : 134

Abstract : Field data were collected in the final part of a two-part study to establish seismic response characteristics, their distribution, and the environmental factors that influence them. Data were collected in two United States Army Tropic Test Center seismic sensor test areas (Gamboa and Alpha) in the Panama Canal Zone during the 1971 wet season. Detailed seismic and environmental data are presented, and special seismic response tests (drop-hammer, man-walking, vegetation effects, reproducibility and ambient-noise) conducted in various environmental conditions at 24 sites in the Gamboa test area and 11 sites in the Alpha test area are described. Also included are results of a multicorrelation analysis used to relate the seismic response descriptors-peak particle velocity (PPV), peak summed particle velocity (PSPV), and sum-frequency (f)--to the environmental measures. (Modified author abstract)

Descriptors :   *Passive defense, *Antiintrusion devices, *Seismic detection, *Personnel detection, Enemy personnel, Intrusion detection, Response, Seasonal variations, Climate, Tropical tests, Surveillance, Panama Canal

Subject Categories : Seismic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE