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Methods for Determining Soil Moisture with Ground Penetrating Radar (GPR)

  • J. S. Igel
  • H. R. Anschütz
  • J. Schmalholz
  • H. Wilhelm
  • W. Breh
  • H. Hötzl
  • C. Hübner

Abstract

The soil water content has a dominant influence on the dielectric permittivity E of porous media because of the high permittivity of water compared with the matrix. The well known Maxwell’s relation which is valid for most natural soils combines the permittivity and the phase velocity v of electromagnetic waves where co is the velocity of light in vacuum,
$$\varepsilon = \left( {\frac{{c_0 }} {\nu }} \right)^2 \cdot $$
(1)
Thus the water content can be quantified by determining this velocity. There exists a wide variety of possibilities to determine the phase velocity of the ground penetrating radar waves, whereby two of them will be introduced in the following section.

Keywords

Soil Moisture Soil Water Content Phase Velocity Dielectric Permittivity Ground Penetrate Radar 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • J. S. Igel
    • 1
  • H. R. Anschütz
    • 1
  • J. Schmalholz
    • 1
  • H. Wilhelm
    • 1
  • W. Breh
    • 2
  • H. Hötzl
    • 2
  • C. Hübner
    • 3
  1. 1.Geophysical InstituteUniversity of KarlsruheGermany
  2. 2.Applied GeologyUniversity of KarlsruheGermany
  3. 3.Karlsruhe Research CenterTechnology and EnvironmentGermany

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