Mathematics – Logic
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agusm.p32b..03b&link_type=abstract
American Geophysical Union, Spring Meeting 2002, abstract #P32B-03
Mathematics
Logic
5460 Physical Properties Of Materials, 5464 Remote Sensing, 5470 Surface Materials And Properties, 5494 Instruments And Techniques
Scientific paper
Slope failure and the resulting movement of material downslope on Mars has never been witnessed, making careful data analyses combined with physical modeling the only way to understand their emplacement process. Evidence exists for varying types of landsliding on Mars. They are a significant geomorphic agent in the modification of the surface of Mars and their emplacement style remains contentious. Furthermore, little is known about the slope forming materials and the processes that govern the triggering, failure, and deposition of landslides. We are examining the emplacement of a range of mass movement types in varying geologic settings on Mars by building on detailed landslide field and modeling studies we have conducted on Earth. We have identified a spectrum of different landslide types on Mars ranging from small gully failures such as those in Nirgal Vallis, lobate debris aprons, to large rock avalanches such as those in Ganges Chasma. The deposits associated with gullies and small debris aprons have characteristics analogous to alluvial fans, rock chutes, talus slopes, and debris flows on Earth. The large landslides on Mars have similar attributes to terrestrial rock avalanches and rockslides. Detailed studies on Earth have shown unique topographic and morphological differences between these mass movement types, which have been well documented and that we have examined. We are using Mars Global Surveyor (MGS) data to conduct new geomorphic, topographic and theoretical modeling studies on the emplacement of landslides on Mars at resolutions comparable to those on Earth.
Barnouin-Jha Olivier
Bulmer Mark H.
Glaze L.
Murphy W.
Neumann Genevra
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