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Evolution of topography on comets. II - Icy craters and trenches (1990)

Sandor, Bradford J. ; Stern, S. Alan ; Colwell, Joshua E. ; [et al.]

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Publication Date: 2011-08-19

Description: The determination of the effects of topography on the sublimation rates of comets and other icy bodies is presently approached via a model of ice heating and sublimation from topographical features. The energy balance equation is solved for cylindrical trenches and spherical craters; the model encompasses shadowing, solar heating, the trapping of thermal radiation and sublimed gas molecules, and reflection of sunlight within the cavity. Generally, an enhancement is found in the net sublimation rate for trenches and craters farther from the sun than some critical distance which depends on the albedo.

Keywords: ASTROPHYSICS

Type: Icarus (ISSN 0019-1035); 85; 205-215

Format: text

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