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Article | REF: C224 V1

Geophysics applied to civil engineering

Author: Richard LAGABRIELLE

Publication date: May 10, 2007

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5. DC electrical methods

5.1 Basic principle

DC electrical prospecting methods can be used to determine the distribution of materials in the ground by means of their resistivity. To do this, a DC current is injected into the soil, and its intensity I is measured by means of two metal electrodes (A and B) planted in the soil and connected to the two terminals of a DC generator (figure 10 ).

DC electrical prospecting: schematic diagram
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