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| Titel |
On the diurnal variability in F2-region plasma density above the EISCAT Svalbard radar |
| VerfasserIn |
J. Moen, X. C. Qiu, H. C. Carlson, R. Fujii, I. W. McCrea |
| 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 ; 26, no. 8 ; Nr. 26, no. 8 (2008-08-06), S.2427-2433 |
| Datensatznummer |
250016200
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| Publikation (Nr.) |
 copernicus.org/angeo-26-2427-2008.pdf |
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| Zusammenfassung |
| Two long runs of EISCAT Svalbard Radar (ESR), in February 2001 and October
2002, have been analysed with respect to variability in the F2 region peak
density and altitude. The diurnal variation in the F2 peak density exhibits
one maximum around 12:00 MLT and another around 23:00 MLT, consistent with solar
wind controlled transport of EUV ionized plasma across the polar cap from
day to night. High density plasma patch material is drawn in through the
cusp inflow region independent of IMF BY. There is no apparent IMF
BY asymmetry on the intake of high density plasma, but the trajectory
of its motion is strongly BY dependent. Comparison with the
international reference ionosphere model (IRI2001) clearly demonstrates that
the model does not take account of the cross-polar transport of F2-region
plasma, and hence has limited applicability in polar cap regions. |
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