Dielectric relaxation effects on permittivity of surface soils

Marcel G. Schaap, Jan M.H. Hendrickx

Research output: Contribution to journalConference article

1 Scopus citations

Abstract

The detectability of buried non-conductive objects with high frequency dielectric methods depends strongly on the contrast between the dielectric properties of the object and the surrounding soil. In this study we report on effects of dielectric relaxation phenomena on the dielectric "constant" of five texturally different soils. We found that fine textured soils (loam, silt and clay) exhibit significant decreases in permittivity between 100 and 1000 MHz. It was also found that the strength of the decrease depends linearly on the soil water content and that the high-frequency permittivity of the soils follow the Topp-curve. The changes in permittivity, however, do not significantly increase the detectability of buried non-conductive low-permittivity objects in soil.

Original languageEnglish (US)
Article number14
Pages (from-to)135-143
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5794
Issue numberPART I
DOIs
StatePublished - Oct 24 2005
Externally publishedYes
EventDetection and Remediation Technologies for Mines and Minelike Targets X - Orlando, FL, United States
Duration: Mar 28 2005Apr 1 2005

Keywords

  • Electric conductivity dielectric relaxation
  • Soil dielectric properties

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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