Accession Number : ADA132923
Title : Cavity Detection and Delineation Research. Report 5. Electromagnetic (Radar) Techniques Applied to Cavity Detection.
Descriptive Note : Technical rept.,
Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
Personal Author(s) : Ballard,Robert F , Jr
PDF Url : ADA132923
Report Date : Jul 1983
Pagination or Media Count : 110
Abstract : This study evaluated four different radar systems to determine their effectiveness in locating subterranean cavities. Tests were conducted at three well-documented sites: Vicksburg, Miss.; Medford Cave, Fla. (near Ocala); and Manatee Springs, Fla. (near Chiefland). None of the radar systems was effective at the Vicksburg, Miss., site because of extremely high conductivities encountered in the overburden materials which were comprised primarily of silts (loess) and clays. The following radar systems were used in this study: (a) A pulsed system fabricated and operated by personnel from Texas A/M University; (b) A pulsed system commercially manufactured by GSSI operated by the owners, Technos, Inc.; (c) A pulsed system developed, fabricated, and operated by personnel from SwRI, and (d) A continuous wave system development, fabricated and operated by personnel from LLNL.
Descriptors : *Caves, *Radar deception, *Cavities, *Radar targets, *Radar antennas, *Structural geology, Very high frequency, Surveys, Electrical conductivity, Radar pulses, Silt, Range(Distance), Radar operators, Mississippi, Underground, Texas, Dielectrics, Radar, Personnel, Conductivity, Radar equipment, Rock, Moisture, Detection, Pulses
Subject Categories : Geology, Geochemistry and Mineralogy
Hydrology, Limnology and Potamology
Active & Passive Radar Detection & Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE