Scale model experiments on optimum transmitter-receiver configurations for resolution of electromagnetic response of multiple conductors

Abstract

Electromagnetic scale modeling response curves over two parallel dykes embedded in resistive or conductive media have been obtained by using horizontal loop inline and broadside systems. It previously was established that inline configuration can electromagnetically resolve the individual conductor only when the separation between them is greater than or equal to transmitter-receiver separation. Fortunately for field geophysicists, broadside configuration can relax such a limit and resolve the two conductors even when the separation between them is half of the transmitter-receiver separation. The experimental results show that the inline configuration gives a better quantitative idea of the identity of the two resolved conductors. A combined use of these two configurations is recommended to the induction prospectors in their ground-based or airborne search for sulphide dykes. >