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A new method for the automatic interpretation of Schlumberger and Wenner sounding curves

Geophysics

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DOI: 10.1190/1.1442648

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Abstract

A fast iterative method for the automatic interpretation of Schlumberger and Wenner sounding curves is based on obtaining interpreted depths and resistivities from shifted electrode spacings and adjusted apparent resistivities, respectively. The method is fully automatic. It does not require an initial guess of the number of layers, their thicknesses, or their resistivities; and it does not require extrapolation of incomplete sounding curves. The number of layers in the interpreted model equals the number of digitized points on the sounding curve. The resulting multilayer model is always well-behaved with no thin layers of unusually high or unusually low resistivities. For noisy data, interpretation is done in two sets of iterations (two passes). Anomalous layers, created because of noise in the first pass, are eliminated in the second pass. Such layers are eliminated by considering the best-fitting curve from the first pass to be a smoothed version of the observed curve and automatically reinterpreting it (second pass). The application of the method is illustrated by several examples. -Author

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
A new method for the automatic interpretation of Schlumberger and Wenner sounding curves
Series title:
Geophysics
DOI:
10.1190/1.1442648
Volume
54
Issue:
2
Year Published:
1989
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Geophysics
First page:
245
Last page:
253
Number of Pages:
9