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Magnetospheric Energy Inputs Into the Upper Atmospheres of the Giant Planets : Volume 23, Issue 5 (28/07/2005)

By Smith, C. G. A.

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Book Id: WPLBN0003983779
Format Type: PDF Article :
File Size: Pages 5
Reproduction Date: 2015

Title: Magnetospheric Energy Inputs Into the Upper Atmospheres of the Giant Planets : Volume 23, Issue 5 (28/07/2005)  
Author: Smith, C. G. A.
Volume: Vol. 23, Issue 5
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Description: Atmospheric Physics Laboratory, Department of Physics and Astronomy, University College, London, UK. 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)

Magnetospheric energy inputs into the upper atmospheres of the giant planets


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