TR32-Database: Database of Transregio 32

[645] - Characterization of bimodal facies distributions using effective anisotropic complex resistivity: a 2D numerical study based on Cole-Cole models

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Features
Citation
Winchen, T., Kemna, A., Vereecken, H., Huisman, J. A., 2009. Characterization of bimodal facies distributions using effective anisotropic complex resistivity: a 2D numerical study based on Cole-Cole models. Geophysics, 74, 19 - 22. DOI: 10.1190/1.3113986.
Identification
Title(s):Main Title: Characterization of bimodal facies distributions using effective anisotropic complex resistivity: a 2D numerical study based on Cole-Cole models
Description(s):Abstract: Subsurface heterogeneity characteristics are of major importance in hydrologic modeling, and likely result in anisotropic electrical properties.We computed the anisotropic effective complex resistivity of 2D bimodal facies distributions numerically. Complex resistivities of individual facies are described in terms of the Cole-Cole relaxation model. First, we determined that effective DC resistivities of the distributions can be reasonably well described by power averaging the properties of individual facies.We found a clear relationship between the mixing parameter and correlation lengths of the facies distributions with respect to horizontal and vertical directions. Then, we used the power-law mixing model to invert for individual Cole-Cole model parameters by fitting predicted electrical responses to simulated spectral effective complex-resistivity data for the two perpendicular directions. Thus, it is possible to derive the electrical properties of individual facies as well as structural parameters describing bimodal facies distribution by means of a noninvasive measurement approach. In particular, anisotropy of the spectral complex-resistivity response provides information on correlation lengths of the distribution. This finding is relevant for all applications of electrical-impedance spectroscopy where anisotropy might be encountered.
Identifier(s):DOI: 10.1190/1.3113986
Responsible Party
Creator(s):Author: Tobias Winchen
Author: Andreas Kemna
Author: Harry Vereecken
Author: Johan A. Huisman
Publisher:Society of Exploration Geophysicists
Topic
TR32 Topic:Other
Subject(s):CRC/TR32 Keywords: soil Heterogeneity, Geophysics
File Details
File Name:2009_Winchen_Geophysics.pdf
Data Type:Text
Size(s):4 Pages
File Size:2685 kB (2.622 MB)
Date(s):Issued: 2009-04-23
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
Geographic
North:-no map data
East:-
South:-
West:-
Measurement Region:None
Measurement Location:--None--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2009
Type:Article
Article Type:Journal
Source:Geophysics
Volume:74
Number Of Pages:4
Page Range:19 - 22
Metadata Details
Metadata Creator:Tobias Winchen
Metadata Created:2013-12-02
Metadata Last Updated:2013-12-02
Subproject:A3
Funding Phase:1
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:112
Metadata Downloads:0
Dataset Downloads:1
Dataset Activity
Features