Mathematics
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988icar...75..187s&link_type=abstract
Icarus (ISSN 0019-1035), vol. 75, Aug. 1988, p. 187-206. DFG-supported research.
Mathematics
97
Io, Maxwell Fluids, Satellite Atmospheres, Satellite Surfaces, Tides, Viscoelasticity, Dissipation, Gravitational Fields, Heat Transmission, Natural Satellites, Perturbation Theory, Spatial Distribution, Voyager Project
Scientific paper
The deformation of Io, the tidal dissipation rate, and its interior spatial distribution are investigated by means of numerical simulations based on (1) a three-layer model (with dissipation in the mantle) or (2) a four-layer model (with dissipation in the asthenosphere). The mathematical derivation of the models is outlined; the selection of the input-parameter values is explained; the results are presented in extensive graphs and contour maps; and the constraints imposed on the models by observational data on the hot-spot distribution, tidal deformation, and gravity field are discussed in detail. It is found that both dissipation mechanisms may play a role on Io: model (2) is better able to explain the concentration of hot spots near the equator, while the presence of a large hot spot near the south pole (if confirmed by observations) would favor model (1).
Ross Martin N.
Schubert Gerald
Segatz M.
Spohn Tilman
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