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| Titel |
Electric field variability and classifications of Titan's magnetoplasma environment |
| VerfasserIn |
C. S. Arridge, N. Achilleos, P. Guio |
| 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 ; 29, no. 7 ; Nr. 29, no. 7 (2011-07-19), S.1253-1258 |
| Datensatznummer |
250017059
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| Publikation (Nr.) |
 copernicus.org/angeo-29-1253-2011.pdf |
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| Zusammenfassung |
| The atmosphere of Saturn's largest moon Titan is driven by photochemistry,
charged particle precipitation from Saturn's upstream magnetosphere, and
presumably by the diffusion of the magnetospheric field into the outer
ionosphere, amongst other processes. Ion pickup, controlled by the upstream
convection electric field, plays a role in the loss of this atmosphere. The
interaction of Titan with Saturn's magnetosphere results in the formation of
a flow-induced magnetosphere. The upstream magnetoplasma environment of
Titan is a complex and highly variable system and significant quasi-periodic
modulations of the plasma in this region of Saturn's magnetosphere have been
reported. In this paper we quantitatively investigate the effect of these
quasi-periodic modulations on the convection electric field at Titan. We
show that the electric field can be significantly perturbed away from the
nominal radial orientation inferred from Voyager 1 observations, and
demonstrate that upstream categorisation schemes must be used with care when
undertaking quantitative studies of Titan's magnetospheric interaction,
particularly where assumptions regarding the orientation of the convection
electric field are made. |
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