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:

1972-03-01

Pagination or Media Count:

60.0

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