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| Titel |
Magnetospheric energy inputs into the upper atmospheres of the giant planets |
| VerfasserIn |
C. G. A. Smith, S. Miller, A. D. Aylward |
| 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 ; 23, no. 5 ; Nr. 23, no. 5 (2005-07-28), S.1943-1947 |
| Datensatznummer |
250015278
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| Publikation (Nr.) |
 copernicus.org/angeo-23-1943-2005.pdf |
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| Zusammenfassung |
| We revisit the effects of Joule heating upon the upper atmospheres of Jupiter
and Saturn. We show that in addition to direct Joule heating there is an
additional input of kinetic energy – ion drag energy – which we quantify
relative to the Joule heating. We also show that fluctuations about the mean
electric field, as observed in the Earth's ionosphere, may significantly
increase the Joule heating itself. For physically plausible parameters these
effects may increase previous estimates of the upper atmospheric energy input
at Saturn from ~10 TW to ~20 TW.
Keywords. Ionosphere (Electric fields and currents; Planetary
ionosphere) – Magnetospheric physics (Auroral phenomena) |
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