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| Titel |
Azimuthally asymmetric ring current as a function of Dst and solar wind conditions |
| VerfasserIn |
Y. P. Maltsev, A. A. Ostapenko |
| 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 ; 22, no. 8 ; Nr. 22, no. 8 (2004-09-07), S.2989-2996 |
| Datensatznummer |
250014980
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| Publikation (Nr.) |
 copernicus.org/angeo-22-2989-2004.pdf |
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| Zusammenfassung |
| Based on magnetic data, spatial distribution of the westward ring current
flowing at |z|<3 RE has been found under five levels
of Dst, five levels of the interplanetary magnetic field (IMF) z component, and
five levels of the solar wind dynamic pressure Psw. The maximum of the
current is located near midnight at distances 5 to 7 RE. The magnitude
of the nightside and dayside parts of the westward current at distances from
4 to 9 RE can be approximated as Inight=1.75-0.041 Dst,
Inoon=0.22-0.013 Dst, where the current is in MA. The relation of the
nightside current to the solar wind parameters can be expressed as
Inight=1.45-0.20 Bs IMF + 0.32 Psw, where BsIMF is the
IMF southward component. The dayside ring current poorly correlates with the
solar wind parameters. |
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