Accession Number : AD0745837

Title :   Investigation into the Attenuation of Seismic Impulses in Different Soil Types.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s) : Hester,Milton Jensen

Report Date : MAR 1972

Pagination or Media Count : 60

Abstract : A review or research indicates that the attenuation of seismic impulses is a complex function of such factors as moisture, soil thickness, substrata homogeneity, substrata consistency, and vegetation. The problem encountered when seismic devices are employed in a tactical situation is the prediction of ranges of detection for different soil types without resorting to soil samples, compression tests, etc. A knowledge of the seismic characteristics or the ranges of detection in various soil types would be very beneficial when employing seismic devices. This thesis will show a relationship, useful for prediction, between the attenuation properties and the range at which a test signal is first detected at a preset level. (Author)

Descriptors :   (*MICROSEISMS, DETECTION), (*SIGNAL GENERATORS, *SOILS), (*TACTICAL WARFARE, COUNTERMEASURES), ATTENUATION, CLASSIFICATION, PASSIVE DEFENSE, EARLY WARNING SYSTEMS, THESES

Subject Categories : Soil Mechanics
      Military Operations, Strategy and Tactics
      Seismic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE