Journal ArticleDOI
Recent developments in the direct-current geoelectrical imaging method
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TLDR
There have been major improvements in instrumentation, field survey design and data inversion techniques for the geoelectrical method over the past 25 years as mentioned in this paper, which has made it possible to conduct large 2D, 3D and even 4D surveys efficiently to resolve complex geological structures that were not possible with traditional 1-D surveys.About:
This article is published in Journal of Applied Geophysics.The article was published on 2013-08-01. It has received 702 citations till now. The article focuses on the topics: Computer technology.read more
Citations
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Journal ArticleDOI
Device for the field measurements of frequency-dependent soil properties in the frequency range of lightning currents.
TL;DR: A detailed description of a relatively uncomplicated measurement device assembled from accessible electronic components that can make the measurements of the frequency-dependent soil properties almost as easy as those for the regular low-frequency resistivity.
Journal ArticleDOI
Delineation of gold mineralization near Lawa village, North Singhbhum Mobile Belt, India, using electrical resistivity imaging, self-potential and very low frequency methods
TL;DR: In this article, the authors used EMD technique to recover signals with significant geologic information from the VLF-EM data and showed an excellent correlation between ERT and very low frequency electromagnetic (VLF) profiles.
Journal ArticleDOI
Electrical resistivity mapping of oil spills in a coastal environment of Lagos, Nigeria
TL;DR: In this article, a combination of 2D Electrical Resistivity Profilling and Vertical Electrical Sounding methods was deployed to map and characterise the subsurface around the contaminated site, which revealed high resistivity structures that indocate the presence of contaminant (oil plumes) of different sizes and shapes around the leakage site.
Proceedings ArticleDOI
Electrical resistivity and induced-polarization imaging for groundwater exploration
TL;DR: In this paper, the integration of electrical resistivity techniques with time-domain induced polarization (IP) imaging for groundwater exploration in a sedimentary terrain, southwestern Nigeria is presented, where the subsurface was characterized to identify the lithologic units and delineate the underlying aquifer.
Journal ArticleDOI
Statistical Analysis of Resistivity Anomalies Caused by Underground Caves
TL;DR: In this article, the authors used electrical resistivity tomography (ERT) together with statistical analysis for the likelihood assessment of underground anomalies located, and more than 30 underground cavities were discovered on the site utilizing the methodology.
References
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Journal ArticleDOI
The electrical resistivity log as an aid in determining some reservoir characteristics
TL;DR: The usefulness of the electrical resistivity log in determining reservoir characteristics is governed largely by: (1) the accuracy with which the true resistivity of the formation can be determined; (2) the scope of detailed data concerning the relation of resistivity measurements to formation characteristics; (3) the available information concerning the conductivity of connate or formation waters; and (4) the extent of geologic knowledge regarding probable changes in facies within given horizons, both vertically and laterally, particularly in relation to the resultant effect on the electrical properties of the reservoir as mentioned in this paper.
Book
An Introduction to Applied and Environmental Geophysics
TL;DR: The first edition of the book as mentioned in this paper contains case histories, and descriptions of geophysical techniques not previously included in such textbooks, but the level of mathematics and physics is deliberately kept to a minimum but is described qualitatively within the text.
Journal ArticleDOI
Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method1
M.H. Loke,R. D. Barker +1 more
TL;DR: In this paper, a smoothness-constrained least-squares method was used for the interpretation of data from resistivity tomography surveys on an 80486DX microcomputer.
Rapid least-squared inversion of apparent resisitivity pseudosections by a quasi-Newton method
M. H. Loke,R. D. Barker +1 more
TL;DR: In this article, a smoothness-constrained least-squares method was used for the interpretation of data from resistivity tomography surveys on an 80486DX microcomputer.
Journal ArticleDOI
Occam's inversion to generate smooth, two-dimensional models from magnetotelluric data
TL;DR: In this paper, the authors propose an extension of the existing 1-D algorithm, Occam's inversion, to smooth 2-D models using an extension to the existing Occam inversion.
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