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| Titel |
Ionospheric conductivity dependence of dayside region-0, 1, and 2 field-aligned current systems: statistical study with DMSP-F7 |
| VerfasserIn |
K. Haraguchi, H. Kawano, K. Yumoto, S. Ohtani, T. Higuchi, G. Ueno |
| 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.2775-2783 |
| Datensatznummer |
250014964
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| Publikation (Nr.) |
 copernicus.org/angeo-22-2775-2004.pdf |
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| Zusammenfassung |
| The present study statistically examines the dependence of the intensities
of dayside (MLT=8-12h) large-scale field-aligned currents (FACs) on the
ionospheric conductance using the summary data of DMSP-F7 constructed by the
procedure of Higuchi and Ohtani (2000). We have found that, in the
dayside region, R1 and R0 have a higher correlation between ionospheric
conductivity and FAC intensity than R2, suggesting that R0 and R1 are driven
by a more voltage-like source than R2. This result is consistent with the
idea that R1 and R0 are driven by the interaction between the solar wind and
the open magnetospheric magnetic field. We have also found that dayside FAC
intensities are latitudinally well balanced when they have a three sheet
structure (R0, R1 and R2); on the other hand, for a two sheet structure (R1
and R2), the intensity of R1 is larger than that of R2, so that the net
current has the polarity of R1. |
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