Episodic volcanism of tidally heated satellites with application to Io

Details Episodic volcanism of tidally heated satellites with application to Io Episodic volcanism of tidally heated satellites with application to Io

May 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...66..341o&link_type=abstract

Icarus (ISSN 0019-1035), vol. 66, May 1986, p. 341-358.

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71

Astronomical Models, Convective Heat Transfer, Io, Natural Satellites, Tides, Volcanoes, Computational Astrophysics, Enceladus, Europa, Heating, Orbital Resonances (Celestial Mechanics), Periodic Variations, Planetary Evolution, Planetary Orbits, Planetary Temperature

Scientific paper

Io is presently considered in light of a simple model for the coupled thermal and orbital evolution of a tidally heated satellite in an orbital resonance, demonstrating quantitatively how a feedback mechanism between the orbital and thermal energy of such a satellite may yield periodic surface heatflow and orbital eccentricity variations. The model predicts that the mean motion of Io may currently be increasing, as suggested by recent estimates of Io's mean motion on the basis of eclipse data. It is further inferred that the tidal stresses in the ice shell of Europa, whose eccentricity mimics that of Io, may recently have been sufficiently great to generate the fracturing observed.

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