Atmospheric tides on Venus. IV - Topographic winds and sediment transport

Computer Science

Scientific paper

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Atmospheric Tides, Topography, Venus Atmosphere, Wind Erosion, Wind Velocity, Atmospheric Boundary Layer, Atmospheric Circulation, Atmospheric Models, Mixing Length Flow Theory, Sediments, Venus, Tidal Effects, Atmosphere, Wind, Topography, Sediment, Transport, Surface, Hypotheses, Flux, Erosion, Deposition, Friction, Parameters, Velocity, Eolian Effects, Comparison, Circulation, Equation Of Motion, Calculations, Models, Viscocity, Conductivity, Mixing, Diffusivity, Stress, Topography

Scientific paper

A novel theory is presented for the Venus boundary layer which encompasses the effects of topography and uses the mixing-length hypothesis to preclude the unknown eddy viscosity. The maps of mass-flux and erosion/deposition rate presented are based on Pioneer Venus orbiter relief measurements. The typically 19 cm/sec friction speeds associated with the present theory are several times greater than those estimated on the basis of Venera 9 and 10 anemometry, and mean aeolian transport is generally away from the equator, contrary to Magellan orbiter windstreak directions.

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