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DC electrical methods

Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

Published
Publication date1/05/2015
Host publicationTreatise on geophysics
EditorsGerald Schubert
PublisherElsevier
Pages233-259
Number of pages17
Volume11
Edition2nd
ISBN (print)9780444538024
<mark>Original language</mark>English

Abstract

Electrical methods using active sources (direct current (DC) resistivity and induced polarization (IP)) are probably the most widely used near-surface geophysical techniques, particularly for environmental investigations. After first providing a brief historical perspective on the development of these methods, we present a range of field investigation approaches, including surface-based imaging and borehole-based imaging. Forward and inverse modeling approaches are reviewed and a general framework for modeling is presented, including the analysis of time-lapse data and image appraisal. Throughout the chapter, we offer some guidelines on the measurement and modeling of DC resistivity and IP data. Finally, some perspectives on future developments of these methods are offered.