Magnetic and gravity anomalies of a triaxial ellipsoid

D. A. Clark; S. J. Saul; D. W. Emerson

doi:10.1071/EG986189

ISSN: 0812-3985
E-ISSN: 1834-7533

Magnetic and gravity anomalies of a triaxial ellipsoid
Authors D. A. Clark^a, S. J. Saul^b and D. W. Emerson^c
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^a CSIRO Division of Mineral Physics and Mineralogy, , PO Box 136, North Ryde, , NSW, 2113, , Australia ^b Austirex International Ltd, , 27 Merriwa Street, Gordon, , NSW, 2072, , Australia ^c Department of Geology and GeophysicsUniversity of Sydney, , NSW, 2006, , Australia
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 17, Issue 4, Dec 1986, p. 189 - 200
DOI: https://doi.org/10.1071/EG986189
- Published online: 01 Dec 1986

Abstract

The theoretical background, a computational algorithm and an HP41CX calculator program for forward modelling of magnetic and gravity anomalies due to ellipsoidal bodies are presented, including gravity effects of prolate and oblate ellipsoids of revolution and two-dimensional elliptic cylinders. The ellipsoid is particularly useful for modelling strongly magnetic, compact orebodies, because of the flexibility and appropriateness of the geometric form and, in particular, because ellipsoids are the only bodies for which self-demagnetization can be treated exactly and analytically. Remanence, anisotropic susceptibility and self-demagnetization are all included in the analysis.

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1986-12-01

2026-01-22

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References

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Kellogg O. D. (1929), Foundations of Potential Theory. Frederick Un-gar, New York.
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Stratton, J. A. (1941), Electromagnetic Theory. McGraw-Hill, New York.

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Article Type: Research Article

Keyword(s): ellipsoidal co-ordinates; elliptic integrals; gravity anomalies; magnetic anomalies; potential theory; remanence; self-demagnetization; susceptibility anisotropy

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Magnetic and gravity anomalies of a triaxial ellipsoid

Abstract

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