08_416M_Aeolian_handout - Eolian Landscapes and Deposits...

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Relevant differences in air versus water as the transporting fluid Eolian Landscapes and Deposits 800 water air ρ 55 water air μ density dynamic viscosity Arrows = mean dune forming wind regimes.
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Aridity is define as P/ET p where P = precipitation and ET p = ability of solar radiation and vegetation to return moisture to the atmosphere by evaporation and evapotranspiration Correlation between aridity and eolian landforms make eolian deposits attractive candidates for _________ studies. P/ET p <0.03 0.03<P/ET p <0.20 0.20<P/ET p <0.50 0.50<P/ET p <0.75 Good match between present- day distribution of active eolian dune fields and worldwide distribution of deserts
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Superposition of eolian topography
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Aeolian Bedforms “Lower Plane Bed” Granules to pebbles up to 1-2 cm Very slow movement by creep May exist as low amplitude, widely space bedforms Ripples Sand ripples Granule ripples Dunes Large variety “Upper Flat Bed” Rare, local high velocity zones
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This note was uploaded on 02/09/2011 for the course GEO 416M taught by Professor Staff during the Fall '08 term at University of Texas at Austin.

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08_416M_Aeolian_handout - Eolian Landscapes and Deposits...

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