In-loop pulse EM response of a stratified earth

Abstract

The in-loop pulse electromagnetic response of a stratified earth has been expressed in terms of an apparent resistivity- time plot using the PEM response over a homogeneous half-space which is typically unipolar with monotonic decay. This half-space response characteristic provides a unique relationship between Crone PEM channel amplitude and the apparent half-space resistivity. The possibility to resolve a thin intermediate conductive and resistive layer with the in-loop PEM system has been investigated. The system is well in shallow geoelectric mapping.