Low-frequency electromagnetic modeling and retrieval of simple orebodies in a conductive Earth

Abstract : As relevant in mineral exploration of the Earth using inductive electromagnetic means, (diffusive) scattering by a perfectly conducting ellipsoidal anomaly placed in a homogeneous conductive medium and illuminated by a time-harmonic magnetic dipole, is considered by means of a low frequency expansion in positive integral powers of (jk), k complex wavenumber of the exterior medium. The aim is to construct a simple yet robust model of the fields to identify the anomaly when magnetic fields are collected nearby. The approach is illustrated by field calculations and inversions of both synthetic and experimental data.
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Contributor : Dominique Lesselier <>
Submitted on : Thursday, November 3, 2011 - 5:04:52 PM
Last modification on : Friday, September 28, 2018 - 1:16:37 AM

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  • HAL Id : hal-00638056, version 1

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Gaële Perrusson, Dominique Lesselier, Panayiotis Vafeas, Gregory Kamvyssas, George Dassios. Low-frequency electromagnetic modeling and retrieval of simple orebodies in a conductive Earth. H. G. W. Begeh and R. P. Gilbert and M. W. Wong. Progress in Analysis - Proceedings of the 3rd ISAAC Congress, World Scientific, pp.1413-1422, 2003, 978-981-238-572-7; 978-981-279-425-3 (ebook). ⟨hal-00638056⟩

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