The Perturbations of Alternating Geomagnetic Fields by Conductivity Anomalies

Abstract

The two‐dimensional problems of interest in studying the perturbation of alternating electric current by a sharp discontinuity of conductivity in a conductor are considered, and their applicability to geophysical problems discussed. A numerical method has been developed for solving the appropriate differential equations and boundary conditions. The method has been applied to a vertical discontinuity in conductivity such as at a continental‐oceanic interface. The two polarization cases are solved, and the fields and current distributions are determined in detail. Copyright © 1970, Wiley Blackwell. All rights reserved