Skip to Main Content
Book Chapter

4: Electromagnetic Theory for Geophysical Applications

By
Stanley H. Ward
Stanley H. Ward
Department of Geology and Geophysics, University of Utah.
Search for other works by this author on:
Gerald W. Hohmann
Gerald W. Hohmann
Department of Geology and Geophysics, University of Utah.
Search for other works by this author on:
Published:
January 01, 1987

Abstract

Section 1 Fundamental Electromagnetism

To comprehend the bases and the interpretational techniques of electrical prospecting methods, requires first a knowledge of the tools of electromagnetic theory. The ability to solve a boundary-value problem in electromagnetic theory then becomes the objective. All electromagnetic phenomena are governed by the empirical Maxwell's equations; we must start with them. Maxwell's equations are uncoupled first-order linear differential equations but can be coupled by the empirical constitutive relations which reduce the number of basic vector field functions from five to two. Care must be taken in selecting the form of the constitutive relations pertinent to the earth. In particular, for most earth problems, we assume isotropy, homogeneity, linearity, and temperature-time-pressure independence of the electrical parameters of local regions of the earth. A more complicated earth model is formed by juxtaposition of several such regions.

You do not currently have access to this article.
Don't already have an account? Register

Figures & Tables

Contents

Investigations in Geophysics

Electromagnetic Methods in Applied Geophysics: Volume 1, Theory

Society of Exploration Geophysicists
Volume
3
ISBN electronic:
9781560802631
Publication date:
January 01, 1987

GeoRef

References

Related

A comprehensive resource of eBooks for researchers in the Earth Sciences

This Feature Is Available To Subscribers Only

Sign In or Create an Account

This PDF is available to Subscribers Only

View Article Abstract & Purchase Options

For full access to this pdf, sign in to an existing account, or purchase an annual subscription.

Subscribe Now