Corotation lag of the Jovian atmosphere, ionosphere, and magnetosphere

Details Corotation lag of the Jovian atmosphere, ionosphere, and magnetosphere Corotation lag of the Jovian atmosphere, ionosphere, and magnetosphere

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jgr....94.3761h&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 94, April 1, 1989, p. 3761-3765.

Physics

37

Corotation, Jupiter Atmosphere, Planetary Ionospheres, Planetary Magnetospheres, Rotating Fluids, Diffusion Coefficient, Drift Rate, Ionospheric Drift, Neutral Atmospheres, Time Lag, Jupiter, Atmosphere, Corotation, Ionosphere, Magnetosphere, Models, Altitude, Velocity, Drift, Neutral Particles, Ions, Eddy Diffusion, Spacecraft Observations, Diagrams, Calculations, Transport, Mixing

Scientific paper

The Jovian ionosphere-magnetosphere coupling model of Hill (1979) was modified to include the rotational slippage of the neutral atmosphere at ionospheric heights, relative to a frame of reference corotating rigidly with Jupiter. Equations were derived for the altitude distributions of ionospheric neutral and ion velocities, and a generalized expression was obtained for the corotation lag of the magnetosphere. The results of calculations provide independent support for the expectation that vertical mixing in Jupiter's atmosphere is much more vigorous at high latitudes than near the equator. They also indicate that the observed corotation lag in the magnetosphere and the Io torus is largely attributable to the slippage of the neutral atmosphere itself, rather than to the slippage of ionospheric ions relative to ionospheric neutrons, as previously suggested.

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