Complex resistivity tomography for environmental applications.

Kemna, Andreas and Binley, Andrew M. and Ramirez, Abelardo and Daily, William (2000) Complex resistivity tomography for environmental applications. Chemical Engineering Journal, 77 (1-2). pp. 11-18. ISSN 1385-8947

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Abstract

Complex resistivity may provide valuable information about the structural and hydraulic nature of porous media and fluids contained within such media. The environmental value of such a property is obvious. To date most environmental applications of complex resistivity have focussed on relatively crude data analysis methods and restrictive electrode configurations. New tomographic methods are becoming available that will allow complex resistivity to be employed with arbitrary electrode arrangements. Laboratory trials of our extensions of electrical resistivity tomography to a complex form are reported. The inversion procedure is presented and demonstrated for a range of targets, with resistive and reactive characteristics. The approach is shown to provide useful magnitude and phase images, giving spectral information about the region of interest. Cole–Cole analysis of the inversion results reveals specific material relaxation characteristics. The usefulness of imaging complex resistivity is evident when compared with more conventional resistivity tomography, in particular when examined over a range of input frequencies.

Item Type:
Journal Article
Journal or Publication Title:
Chemical Engineering Journal
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2304
Subjects:
?? complex resistivityinversionrelaxationenvironmental chemistrygeneral chemical engineeringgeneral chemistryindustrial and manufacturing engineeringchemical engineering(all)chemistry(all)ge environmental sciences ??
ID Code:
21626
Deposited By:
Deposited On:
22 Jan 2009 16:39
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Jul 2024 08:21