Mathematics – Logic
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.p12c..02k&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #P12C-02
Mathematics
Logic
1821 Floods, 1825 Geomorphology: Fluvial (1625), 1856 River Channels (0483, 0744), 5415 Erosion And Weathering, 5419 Hydrology And Fluvial Processes
Scientific paper
Martian stepped fans have a distinctive terraced profile and are often fed by deep, first order canyons with small drainage basins. Using flume experiments, we find that distinct terraces form as a fan deposits into a crater basin filling with water. Terrace preservation implies no long-term deposition at a stable water level and an inactive fluvial system during water drainage. Based on scaling from our experiments, we estimate that the formation time for Martian stepped-fans and channel erosion is on the order of decades and conclude that stepped fans on Mars likely formed during a single, basin-filling event driven by a short-lived, intense hydrologic cycle. The estimated discharge rates are comparable to some of the largest rivers on Earth and these rates highlight the challenges of determining the water source.
Kleinhans M.
Kraal E.
Postma George
van Dijk Maurits
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