The Perturbation of Alternating Geomagnetic Fields by Three‐Dimensional Conductivity Inhomogeneities

Abstract

The perturbation of alternating electromagnetic fields in a three‐dimensional model with a conductivity inhomogeneity is considered. The general model is that of a semi‐infinite conducting half‐space with an embedded inhomogeneity of finite extent in three dimensions. The problem is solved numerically and three‐dimensional plots of the amplitudes of the field components and their phases at the surface of the half‐space above the inhomogeneity for two particular models are given. Copyright © 1972, Wiley Blackwell. All rights reserved