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Book Chapter

Modeling Magnetic and Gravity Anomalies

Published:
January 01, 2001

Abstract

4.1
Magnetic Anomaly

For a uniformly magnetized body, the magnetic anomaly can be computed using a surface integration method because there is no volumetric magnetization. However, for a strongly magnetized body if the surface of the body is not a quadratic surface, the magnetization inside the body is no longer uniform and volumetric magnetization exists. Thus, surface integration alone will not accurately calculate the magnetic anomaly. In this case, one can use numerical methods to solve the governing partial differential equation to compute the anomaly. The BEM is one of several methods that can be used.

4.1.1
Boundary Value Problem of Magnetic Potential

In a space free of electrical currents, the magnetic field H and the magnetic induction intensity B satisfy

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Contents

Society of Exploration Geophysicists Geophysical Monograph Series

The Boundary Element Method in Geophysics

Shi-zhe Xu
Shi-zhe Xu
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Society of Exploration Geophysicists
Volume
9
ISBN electronic:
9781560802112
Publication date:
January 01, 2001

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