A scaling law for aeolian dunes on Mars, Venus, Earth, and for subaqueous ripples

  title={A scaling law for aeolian dunes on Mars, Venus, Earth, and for subaqueous ripples},
  author={Philippe Claudin and Bruno Andreotti},
  journal={Earth and Planetary Science Letters},
Abstract The linear stability analysis of the equations governing the evolution of a flat sand bed submitted to a turbulent shear flow predicts that the wavelength λ at which the bed destabilises to form dunes should scale with the drag length L drag = ρ s ρ f d . This scaling law is tested using existing and new measurements performed in water (subaqueous ripples), in air (aeolian dunes and fresh snow dunes), in a high pressure CO2 wind tunnel reproducing conditions close to Venus' atmosphere… Expand

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