Fig. 5: Influence of saltation on aerodynamic roughness under varied atmospheric pressures.
From: Aerodynamic roughness of rippled beds under active saltation at Earth-to-Mars atmospheric pressures
a Ratio of aerodynamic roughness induced by saltation, z0,saltation (modeled) and z0 (experimental measurements) as a function of the focal height, Hf, normalized by the height of the largest ripples present, \({h}_{\max }\), at each pressure. b Ratio of focal height to maximum bedform height, \({H}_{{{{\rm{f}}}}}/{h}_{\max }\), as a function of pressure. Shaded area indicates the boundary between aerodynamically smooth and aerodynamically rough conditions (defined by Rer ~ 10). Source data are provided as a Source Data file.
