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| Titel |
Creation of the substorm current wedge through the perturbation of the directly driven current system: a new model for substorm expansion |
| VerfasserIn |
G. Rostoker, E. Friedrich |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 23, no. 6 ; Nr. 23, no. 6 (2005-09-15), S.2171-2182 |
| Datensatznummer |
250015295
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| Publikation (Nr.) |
 copernicus.org/angeo-23-2171-2005.pdf |
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| Zusammenfassung |
The past four decades have seen a considerable amount of research on the
study of magnetospheric substorms, and over most of these years the
expansive phase of the substorm has been associated with the development of
a three dimensional current system that has been termed the substorm current
wedge. This current system has been thought to be a consequence of the
short-circuiting of crosstail current through the ionosphere, and is viewed
as a distinctive current system operating independently from the directly
driven current with which it co-exists. The purpose of this paper is to show
that the substorm current wedge should be viewed as an equivalent current
system rather than a real current system. It will be shown that the magnetic
perturbation pattern associated with the current wedge can be modeled as
purely a perturbation of the directly driven current system in the midnight
sector.
Keywords. Magnetospheric physics (Auroral phenomena;
Current systems; Magnetotail; Storms and substorms |
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