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This article in SSSAJ

  1. Vol. 61 No. 4, p. 1004-1009
     
    Received: Apr 15, 1996


    * Corresponding author(s): janmhhendrickx@hotmail.com
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doi:10.2136/sssaj1997.03615995006100040002x

Tikhonov Regularization of Electrical Conductivity Depth Profiles in Field Soils

  1. Brian Borchers ,
  2. Tom Uram and
  3. Jan M. H. Hendrickx
  1. Dep. of Mathematics, New Mexico Tech, Socorro, NM 87801
    Montgomery Watson, Lake Worth, FL
    Hydrology Program and Geophysical Research Center, New Mexico Tech, Socorro, NM 87801

Abstract

Abstract

Electromagneetic induction is an established, noninvasive technique for measuring the apparent electrical conductivity of soils and contaminants in soils and aquifers. Nevertheless, the noninvasive determination of electrical conductivity depth profiles using only aboveground electromagnetic induction measurements remains difficult since it involves ill-posed inverse problems. Tikhonov regularization is an established technique for the solution of ill-posed linear inverse problems. We used Tikhonov regularization for estimating the electrical conductivity depth profile of the soil from aboveground electromagnetic induction measurements. Results from the inversion of sets of Geonics EM-38 measurements are reported. It was found that this technique is superior to other inverse techniques previously reported in the literature.

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