Dielectric relaxation effects on permittivity of surface soils

Marcel G. Schaap; Jan M.H. Hendrickx

doi:10.1117/12.604148

Dielectric relaxation effects on permittivity of surface soils

Marcel G. Schaap, Jan M.H. Hendrickx

Research output: Contribution to journal › Conference article › peer-review

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 language	English (US)
Article number	14
Pages (from-to)	135-143
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5794
Issue number	PART I
DOIs	https://doi.org/10.1117/12.604148
State	Published - 2005
Externally published	Yes
Event	Detection and Remediation Technologies for Mines and Minelike Targets X - Orlando, FL, United States Duration: Mar 28 2005 → Apr 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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10.1117/12.604148

Cite this

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title = "Dielectric relaxation effects on permittivity of surface soils",

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.",

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T1 - Dielectric relaxation effects on permittivity of surface soils

AU - Schaap, Marcel G.

AU - Hendrickx, Jan M.H.

PY - 2005

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N2 - 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.

AB - 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.

KW - Electric conductivity dielectric relaxation

KW - Soil dielectric properties

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Dielectric relaxation effects on permittivity of surface soils

Abstract

Keywords

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