Computation of the electromagnetic response of a layered earth to a vertical coaxial loop system

Abstract

The electromagnetic (EM) mutual coupling ratio for a vertical coaxial loop system over a layered earth is expressed as a Hankel transformable integral. This expression facili- tates the computation, using an available digital linear filter, for the response of either a perpendicular or a vertical coplanar loop configuration, or a Schlumberger electrode configuration. Such computations may be carried out on a programmable pocket calculator.