Geophysics applied to civil engineering : Electromagnetic methods

Electromagnetic methods
Geophysics applied to civil engineering

Author : Richard LAGABRIELLE

Publication date: May 10, 2007 | Lire en français

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7. Electromagnetic methods

There are two main types of electromagnetic method, depending on the frequency f of variation of the electromagnetic field observed.

First, we define the characteristic frequency : $f_{c} = \frac{1}{2 π} \frac{σ}{ε} = \frac{1}{2 π} \frac{1}{ρ ε} = \frac{18 \cdot 10^{9}}{ρ ε_{r}}$

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Electromagnetic methods

(1) - Géophysique Appliquée, Code de Bonne Pratique - . BRGM, Compagnie Générale de Géophysique (CGG), Compagnie de Prospection Géophysique Française (CPGF), Réseau des Laboratoires des Ponts et Chaussées (LRPC), géré par AGAP-Qualité, diffusé par UFG, Paris, 206 pp (1996).
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