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Least-squares deconvolution of apparent resistivity pseudosections
Abstract
A fast technique for the inversion of data from resistivity tomography surveys has been developed. This technique is based on the smoothness-constrained, least-squares method, and it produces a 2-D subsurface model that is free of distortions in the apparent resistivity pseudosection caused by the electrode array geometry used. A homogeneous earth model is used as the starting model for which the apparent resistivity partial derivative values can be calculated analytically. Tests with a variety of models and data from field surveys show that this technique is insensitive to random noise, provided a sufficiently large damping factor is used, and that it can resolve structures that cause overlapping anomalies in the pseudosection. On a 33 MHz 80486DX microcomputer, it takes about 5 s to process a single data set.
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Cited by
Recent developments in the direct-current geoelectrical imaging method
Loke, M. H., Chambers, J. E., Rucker, D. F., Kuras, O., & Wilkinson, P. B. (2013) · Journal of Applied Geophysics · doi:10.1016/j.jappgeo.2013.02.017 · Cited by 1,039
Self-citationRichards, L. A., Magnone, D., Sovann, C., Kong, C., Uhlemann, S., Kuras, O., van Dongen, B. E., Ballentine, C. J., & Polya, D. A. (2017) · Science of the Total Environment · doi:10.1016/j.scitotenv.2017.02.217 · Cited by 42
“…resistivity tomography (AGI SuperSting R8, USA, with dipoledipole measurement configuration and data inversion using Res2dInv Geotomo Software (Loke and Barker, 1995)), which enabled identification of areas broadly classified by differences in lithology (defined by their resistivity…”
Method
Metadata
- Authors
- Loke, M. H., & Barker, R. D.
- Venue
- Geophysics
- Publisher
- Society of Exploration Geophysicists
- Published
- 1995-12-01
- Volume
- 60
- Issue
- 6
- Pages
- 1682-1690
- ISSN
- 0016-8033 (ISSN-L)
- 1942-2156
- OpenAlex
- W2134530537
- Cited by
- 608
- References
- 0
- FWCI
- 3.97
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Least-squares deconvolution of apparent resistivity pseudosections. https://app.cochat.ai/papers/10.1190/1.1443900
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- Loke, M. H., & Barker, R. D. (1995). Least-squares deconvolution of apparent resistivity pseudosections. Geophysics. https://doi.org/10.1190/1.1443900
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