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On the interpretation of the geomagnetic energy spectrum

Physics of the Earth and Planetary Interiors

By:
and
DOI: 10.1016/0031-9201(87)90149-X

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Abstract

Two recent high-degree magnetic energy spectra, based mostly on MAGSAT data, are compared and found to agree very well out to order and degree n = 15, but the spectrum remains somewhat uncertain for higher degrees. The hypothesis that a primary break in the slope of the spectrum, plotted semi-logarithmically, is due to a transition from dominance by core sources to dominance by crustal magnetization is tested. Simple arrays of dipoles and current loops are found whose combined fields fit the spectrum. Two distinctly different ranges of source depth are found to be adequate. Because one range is shallow and the other deep, the hypothesis is supported. ?? 1987.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
On the interpretation of the geomagnetic energy spectrum
Series title:
Physics of the Earth and Planetary Interiors
DOI:
10.1016/0031-9201(87)90149-X
Volume
48
Issue:
3-4
Year Published:
1987
Language:
English
Publisher:
Elsevier
Publisher location:
Amsterdam, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Physics of the Earth and Planetary Interiors
First page:
265
Last page:
278
Number of Pages:
14