Accession Number : ADA119596

Title :   Measurement of Ground Dielectric Properties Using Wide-Angle Reflection and Refraction,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s) : Arcone,Steven A ; Delaney,Allan J

PDF Url : ADA119596

Report Date : Mar 1982

Pagination or Media Count : 18

Abstract : The interpretation of continuous radar profiles requires an alternative geophysical means of obtaining ground dielectric information. Ground dielectric properties were measured using wide-angle reflection and refraction (WARR) soundings with a ground-probing radar set that transmits pulses f a few nanoseconds duration. The investigations, carried out over sandy gravel in interior Alaska, provided dielectric data to about a 5-m depth. The WARR soundings were displayed as individual traces allowing interference between separate events and dispersion to be observed, and the soundings were compared with continuous radar and resistivity profiles conducted concurrently to extract the maximum amount of dielectric information. The dielectric constants, derived mainly from the direct ground waves propagating along the surface, ranged from 2.9 to 7.4. Dielectric values interpreted for one site predicted the possibility of a refracted event which may have occurred during one of the soundings. (Author)

Descriptors :   *Radio transmission, *Soils, Ground level, Radar signals, Underground, Reflection, Refraction, Radar reflections, Intensity, Profiles, Dielectric properties, Electrical resistance

Subject Categories : Soil Mechanics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE