The effect of volume phase changes, mass transport, sunlight penetration, and densification on the thermal regime of icy regoliths

Details The effect of volume phase changes, mass transport, sunlight penetration, and densification on the thermal regime of icy regoliths The effect of volume phase changes, mass transport, sunlight penetration, and densification on the thermal regime of icy regoliths

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...88..193f&link_type=abstract

Icarus (ISSN 0019-1035), vol. 88, Nov. 1990, p. 193-204.

Mathematics

Logic

14

Mass Transfer, Planetary Crusts, Planetary Surfaces, Regolith, Sunlight, Thermal Conductivity, Infrared Radiation, Molecular Flow, Surface Temperature

Scientific paper

The present quantitative modeling of convective, condensational, and sublimational effects on porous ice crust volumes subjected to solar radiation encompasses the effect of such insolation's penetration of visible bandpass-translucent light, but opaque to the IR bandpass. Quasi-steady-state temperatures, H2O mass fluxes, and ice mass-density change rates are computed as functions of time of day and ice depth. When the effects of latent heat and mass transport are included in the model, the enhancement of near-surface temperature due to the 'solid-state greenhouse effect' is substantially diminished. When latent heat, mass transport, and densification effects are considered, however, a significant solid-state greenhouse effect is shown to be compatible with both morphological evidence for high crust strengths and icy shell decoupling from the lithosphere.

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