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| Titel |
Afternoon mid-latitude current system and low-latitude geomagnetic field asymmetry during geomagnetic storms |
| VerfasserIn |
A. Grafe, P. A. Bespalov, V. Y. Trakhtengerts, A. G. Demekhov |
| 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 ; 15, no. 12 ; Nr. 15, no. 12, S.1537-1547 |
| Datensatznummer |
250013038
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| Publikation (Nr.) |
 copernicus.org/angeo-15-1537-1997.pdf |
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| Zusammenfassung |
| For four geomagnetic storms of middle
intensity the relationship between the low-latitude magnetic field asymmetry
using ASY indices and the intensity of the auroral eastward and westward
electrojet was considered. It was asked whether there exists a connection
between ASY and the eastward electrojet. To answer this question equivalent
current systems were estimated in mid-latitudes. It was found that the
observations obviously show no correlative relationship between the low-latitude
magnetic-field asymmetry and the eastward electrojet, whereas one exists between
ASY and the westward electrojet. To explain the generally accepted common
three-dimensional current system between the partial ring current and the
eastward electrojet, a condensor model of the three-dimensional current system
was developed. It could be shown that the short periodic variations of the
partial ring current are shielded by the condensor and cannot influence the
eastward-electrojet current. |
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