Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987em%26p...39..225s&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 39, Nov. 1987, p. 225-236.
Astronomy and Astrophysics
Astronomy
1
Astronomical Models, Jupiter Satellites, Planetary Evolution, Saturn Satellites, Galilean Satellites, Icy Satellites, Planetology
Scientific paper
The position of the satellite within the protonebula, the influence of the parent planet, particularly the relative effects of tidal (gravitational) as opposed to radiogenic (internal) heat generating processes, as well as the type of ice, exert a control on the evolutionary histories of the Jovian and Saturnian satellites. Two thermal-drive models are proposed based on: an expression for externally derived gravitational influences between two bodies; and internal heat generation via radiogenic decay (expressed by surface area/volume ratio). Both parameters, for the Galilean satellites, are plotted against an inferred product of tectonic processes - the age of the surface terrain. From these diagrams, the tectonic evolutionary state of the more distant Saturnian system are predicted. These moons are fitted into an evolutionary framework for the Solar System.
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