On the interpretation of the geomagnetic energy spectrum
Physics of the Earth and Planetary Interiors
By: E.R. Benton and L.R. Alldredge
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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.
Suggested Citation
Benton, E., Alldredge, L., 1987, On the interpretation of the geomagnetic energy spectrum: Physics of the Earth and Planetary Interiors, v. 48, no. 3-4, p. 265-278, https://doi.org/10.1016/0031-9201(87)90149-X.
| 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 |