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Strength of a Magnetically Permeable Surface Layer on Transient Electromagnetic Field by Using Natural-frequency Concept

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Czechoslovak Journal of Physics Aims and scope

Abstract

The complete time-domain fields due to a vertical magnetic dipole on the surface of two-layer earth model are reexamined when the usually neglected magnetic permeability contrast is considered using the natural-frequency concept. It is shown that for two-layered earth model, where the upper one is permeable, the electromagnetic induction response is modified with respect to the nonpermeable case. The step responses of the induced voltage in a horizontal receiving loop is found to have definite diagnostic features for the ground beneath. These features have been demonstrated by numerical results and illustrated by figures.

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Authors and Affiliations

  1. Mathematics Department, Faculty of Science, Ain Shams University, Cairo, Egypt

    Ghada M. Sami

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  1. Ghada M. Sami
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Sami, G.M. Strength of a Magnetically Permeable Surface Layer on Transient Electromagnetic Field by Using Natural-frequency Concept. Czech J Phys 55, 555–562 (2005). https://doi.org/10.1007/s10582-005-0060-8

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  • DOI: https://doi.org/10.1007/s10582-005-0060-8

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