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Detailed Reference Information |
Miyamoto, H., Dohm, J.M., Baker, V.R., Beyer, R.A. and Bourke, M. (2004). Dynamics of unusual debris flows on Martian sand dunes. Geophysical Research Letters 31: doi: 10.1029/2004GL020313. issn: 0094-8276. |
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Gullies that dissect sand dunes in Russell impact crater often display debris flow-like deposits in their distal reaches. The possible range of both the rheological properties and the flow rates are estimated using a numerical simulation code of a Bingham plastic flow to help explain the formation of these features. Our simulated results are best explained by a rapid debris flow. For example, a debris flow with the viscosity of 102 Pa s and the yield strength of 102 Pa can form the observed deposits with a flow rate of 0.5 m3/s sustained over several minutes and total discharged water volume on the order of hundreds of cubic meters, which may be produced by melting a surface layer of interstitial ice within the dune deposits to several centimeters depth. |
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Abstract |
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Keywords
Hydrology, Geomorphology, Hydrology, Frozen ground, Global Change, Geomorphology and weathering (1824, 1886), Planetology, Solar System Objects, Comparative planetology, Planetology, Solar System Objects, Mars |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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