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Titel |
The large-scale magnetospheric electric field observed by Double Star TC-1 |
VerfasserIn |
Z. H. He, Z. X. Liu, T. Chen, C. Shen, X. Li, C. Carr, H. Rème |
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 ; 28, no. 9 ; Nr. 28, no. 9 (2010-09-03), S.1625-1631 |
Datensatznummer |
250016876
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Publikation (Nr.) |
copernicus.org/angeo-28-1625-2010.pdf |
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Zusammenfassung |
The relationship between the average structure of the inner magnetospheric
large-scale electric field and geomagnetic activity levels has been
investigated by Double Star TC-1 data for radial distances ρ between 4.5 RE
and 12.5 RE and MLT between 18:00 h and 06:00 h from July to October in
2004 and 2005. The sunward component of the electric field decreases
monotonically as ρ increases and approaches zero as the distance off the
Earth is greater than 10 RE. The dawn-dusk component is always duskward. It
decreases at about 6 RE where the ring current is typically observed to be
the strongest and shows strong asymmetry with respect to the magnetic local
time. Surprisingly, the average electric field obtained from TC-1 for low
activity is almost comparable to that observed during moderate activity,
which is always duskward at the magnetotail (8 RE~12 RE). |
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