pure and applied geophysics

, Volume 82, Issue 1, pp 259–269 | Cite as

Apparent resistivity over a three layer earth with an inhomogeneous interstratum

  • Tarkeshwar Lal


The theory of resistivity sounding on a three layer earth comprising an inhomogeneous interstratum has been presented. The electrical conductivity in the intermediate layer, embedded between two layers of uniform conductivity, is assumed to follow either generalised power law or exponential variation. A point source of current is placed on the surface. The electric potential functions on the ground surface have been obtained. The expressions for apparent resistivity over the above models for the Wenner and Schlumberger electrode configurations have been derived.


Electrical Conductivity Point Source Ground Surface Potential Function Intermediate Layer 
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  1. [1]
    K. Mallick andA. Roy,Resistivity sounding on a two layer earth with transitional boundary, Geophysical Prospecting16 (1968), 436.Google Scholar
  2. [2]
    M. S. Mickley, T. K. Sherwood andC. E. Reed,Applied mathematics in Chemical engineering (McGraw Hill Book Co., Inc., New York 1957).Google Scholar

Copyright information

© Birkhäuser Verlag 1970

Authors and Affiliations

  • Tarkeshwar Lal
    • 1
  1. 1.Department of GeophysicsBanaras Hindu UniversityVaranasi-5India

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