Mathematics – Logic
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...78...90r&link_type=abstract
Icarus (ISSN 0019-1035), vol. 78, March 1989, p. 90-101.
Mathematics
Logic
44
Astronomical Models, Enceladus, Orbital Resonances (Celestial Mechanics), Viscoelasticity, Eccentricity, Heating, Lithosphere, Satellite Surfaces, Turbulent Flow, Saturn, Satellites, Enceladus, Tidal Effects, Heating, Models, Layers, Elasticity, Dissipation, Eccentricity, Parameters, Lithosphere, Mantle, Conductivity, Viscosity, Temperature, Dynamics, Evolution, Diagrams
Scientific paper
Multilayered viscoelastic models of Encedalus are presently used to model its tidal heating, whose theoretical maximum violates an upper bound based on Saturn's Q. These multilayered models, which are demonstrably thermally stable at the current eccentricity with an about 10-km thick lithosphere, require a combination of near-surface insulation, subsurface solar heating, or anomalously low lithospheric conductivity, to accomodate both the dynamic and the geological constraints. The two- and three-layer models considered in detail suggest that the thermal and dynamical evolution of Encedalus may have been a very straightforward one that involved only Dione in a 2:1 resonance.
Ross Martin N.
Schubert Gerald
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