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The magnetospheric disturbance ring current as a source for probing the deep earth electrical conductivity

Pure and Applied Geophysics PAGEOPH

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DOI: 10.1007/BF00878018

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Abstract

Two current rings have been observed in the equatorial plane of the earth at times of high geomagnetic activity. An eastward current exists between about 2 and 3.5 earth radii (Re) distant, and a larger, more variable companion current exists between about 4 and 9 Re. These current regions are loaded during geomagnetic substorms. They decay, almost exponentially, after the cessation of the particle influx that attends the solar wind disturbance. This review focuses upon characteristics needed for intelligent use of the ring current as a source for induction probing of the earth's mantle. Considerable difficulties are found with the assumption that Dst is a ring-current index. ?? 1990 Birkha??user Verlag.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The magnetospheric disturbance ring current as a source for probing the deep earth electrical conductivity
Series title:
Pure and Applied Geophysics PAGEOPH
DOI:
10.1007/BF00878018
Volume
134
Issue:
4
Year Published:
1990
Language:
English
Publisher location:
Birkha??user-Verlag
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Pure and Applied Geophysics PAGEOPH
First page:
541
Last page:
557
Number of Pages:
17