Eolian features in the Western Desert of Egypt and some applications to Mars

Physics

Scientific paper

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Dunes, Libyan Desert, Mars Surface, Photogeology, Satellite-Borne Photography, Wind Erosion, Egypt, Geomorphology, Landsat Satellites, Sands, Viking Orbiter 1, Viking Orbiter 2

Scientific paper

Data from field studies and satellite photographs of the Western Desert of Egypt, which provides analogs of Martian wind-formed features, including sand dunes, alternating light and dark streaks, knob shadows and yardangs, are considered. Thoroughgoing sand of mostly fine to medium grain size is migrating southward in longitudinal dune belts and barchan chains whose long axes lie parallel to the prevailing northerly winds, but topographic variations such as scarps and depressions strongly influence the zones of deposition and dune morphology. Attention is given to the streamlined yardangs carved in crystalline limestone that constitute one of the largest yardang fields on earth.

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