Modeling of the Formation of Sharp-Edged Depressions on Titan

1) Interpreting the of diagnostic landforms in the polar regions of Titan using Cassini RADAR image swaths, SARTopo data, and published geologic maps. These datasets will be used to develop testable landform evolutionary scenarios, including climate variations and the nature of surface materials.

2) Advise the project PI about adapting the MARSSIM simulation model package developed at the University of Virginia to modeling of landform evolution in the polar regions of Titan. He aid with making any necessary changes in the DELIM modeling framework. This will involve the Co-I in exploring possible scenarios under different assumptions about 1) initial topography; 2) intensity and timing of fluvial erosion and mass wasting; and 3) tectonic deformation. The Co-I will also aid in comparing simulated landforms with extant polar landscapes both qualitatively and quantitatively using morphometric characterization.

3) Howard will help interpret the results of the geomorphic mapping and simulation modeling in terms of evaluating different scenarios about the evolution of Titan’s polar environment and tectonic environment.

4) He will confer with proposal colleagues both electronically as well as one meeting per year at NASA Ames.