HR: 15:15h
AN: P43A-06    [Abstracts]
TI: 3-D Modeling of Landscape-Modifying Processes on Icy Planetary Surfaces
AU: * Wood, S E
EM: sewood@atmos.washington.edu
AF: University of Washington, Dept. of Atmospheric Sciences 408 ATG Bldg., Seattle, WA 98195-1640, United States
AU: Moore, J M
EM: jeff.moore@nasa.gov
AF: NASA Ames Research Center, Moffett Field, Moffett Field, CA 94035, United States
AU: Schenk, P M
EM: schenk@lpi.usra.edu
AF: Lunar and Planetary Institute, 3600 Bay Area Blvd., Houston, TX 77058, United States
AU: Howard, A D
EM: ah6p@virginia.edu
AF: University of Virginia, Dept. of Environmental Sciences, Charlottesville, VA 22903, United States
AB: We will evaluate the sequence and extent of various landform-modifying erosional and volatile redistribution processes that have shaped the Galilean satellites using a 3-D model that simulates the following surface and subsurface processes: 1) sublimation and re-condensation of volatiles; 2) development of refractory lag deposits; 3) radiative heating/cooling of the surface (including reflection, emission, and shadowing by other surface elements); 4) thermal diffusion; and 5) vapor diffusion. All processes will be modeled as a function of slope, orientation, albedo, diurnal (or geothermal) heat variations, and the thermo-physical properties of the substrate. The model will provide explicit simulations of landform development and thusly will predict the topographic and volatile evolution of the surface and final landscape form as constrained by DEMs.
DE: 5405 Atmospheres (0343, 1060)
DE: 5410 Composition (1060, 3672)
DE: 5422 Ices
DE: 5430 Interiors (8147)
DE: 5480 Volcanism (6063, 8148, 8450)
SC: Planetary Sciences [P]
MN: 2007 Joint Assembly