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Article | REF: C225 V2

Borehole logging and geophysics

Author: Richard LAGABRIELLE

Publication date: May 10, 2007

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8. Electromagnetic tomography

As we saw in [C 224] (§ 7.1.1), electromagnetic methods fall into two main categories, depending on the frequency of the wave. Here, we are dealing with a method where the frequencies used are above 50 MHz. In this case, the dominant phenomenon in the interaction between the wave and the ground is propagation.

8.1 Scope and conditions of application

Monofrequency electromagnetic waves (MEW) tomography is mainly used to detect underground cavities at depths...

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