Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Complex resistivity tomography for environmental applications.
AU - Kemna, Andreas
AU - Binley, Andrew M.
AU - Ramirez, Abelardo
AU - Daily, William
PY - 2000/4/15
Y1 - 2000/4/15
N2 - 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.
AB - 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.
KW - Complex resistivity
KW - Inversion
KW - Relaxation
U2 - 10.1016/S1385-8947(99)00135-7
DO - 10.1016/S1385-8947(99)00135-7
M3 - Journal article
VL - 77
SP - 11
EP - 18
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
SN - 1385-8947
IS - 1-2
ER -