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Titel |
Travelling convection vortices in the ionosphere map to the central plasma sheet |
VerfasserIn |
A. Yahnin, T. Moretto |
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 ; 14, no. 10 ; Nr. 14, no. 10, S.1025-1031 |
Datensatznummer |
250012426
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Publikation (Nr.) |
copernicus.org/angeo-14-1025-1996.pdf |
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Zusammenfassung |
We investigate the magnetospheric domain
responsible for the generation of ionospheric travelling convection vortices (TCV)
by comparing the location of the TCV to the locations of the low-altitude
particle-precipitation boundaries deduced from the DMSP satellite measurements.
For three very well documented TCV events we are able to identify suitable
satellite passes, in the sense that for each event we can identify two to three
passes occurring close to the TCV observation in both time and space. In all
three cases the comparisons place the TCV centres at or equatorward of the
central plasma sheet/boundary plasma sheet precipitation boundary. Thus our
results indicate that the field-aligned currents related to the TCV originate in
the plasma sheet rather than at the magnetopause or in the low-latitude boundary
layer, as previous studies suggest. |
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