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The effect of volume phase changes, mass transport, sunlight penetration, and densification on the thermal regime of icy regolithsThe 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.
Document ID
19910031726
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fanale, Fraser P.
(Hawaii Univ. Honolulu, HI, United States)
Salvail, James R.
(Hawaii, University Honolulu, United States)
Matson, Dennis L.
(Hawaii Univ. Honolulu, HI, United States)
Brown, Robert H.
(JPL Pasadena, CA, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1990
Publication Information
Publication: Icarus
Volume: 88
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
91A16349
Funding Number(s)
CONTRACT_GRANT: NAGW-633
Distribution Limits
Public
Copyright
Other

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