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f A Study for the role of the surface layer on the conformation of a SP anomaly produced by a point-pole
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 55th EAEG Meeting, Jun 1993, cp-46-00181
- ISBN: 978-94-6282-135-4
Abstract
In the present paper, a mathematical treatment is attempted to describe the influence of a surface layer of resistivity p1, on the formation of self-potential (SP) curve over a point-pole (vertical dipole with infinite depth extent) seated in a medium of resistivity p2 (see fig . 1). The whole elaboration is based on the fact that ground resistivity variations distort the circulation of the electric current which is produced by a polarized body. Therefore, the measured potential at ground surface is influenced by the presence of different geological layers and its magnitude depends on the underground resistivity distribution.