Accession Number : AD0783488

Title :   Dielectric Dispersive Properties of Subsurface Rock at a Buried Antenna Site.

Descriptive Note : Interim rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Hulse,William H. , Jr

Report Date : JUL 1974

Pagination or Media Count : 8

Abstract : The electrical properties of rock specimens collected from the surface and subsurface of a buried antenna site were measured to provide information for calculating electromagnetic wave propagation constants for modeling and assaying antenna performance. The rock is aporhyolite exhibiting intense metasomatic alteration; the principal mineral constituents are epidote and sericite. The parameters (dielectric constant, dissipation factor, and effective conductivity) were measured in the range 10-100 kHz for both dry and moist conditions. These rock specimens when moist exhibited high dielectric constants and considerable dispersion at lower frequencies. (Author)

Descriptors :   *Radio transmission, *Rock, Dielectric properties, Subsurface, Underground antennas, Electrical properties, Dispersing

Subject Categories : Geology, Geochemistry and Mineralogy
      Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE