Figure 8
From: Numerical modeling of the wind flow over a transverse dune
Sand induration can explain the origin of exotic dome-like dunes on Mars.
Dunes at Chasma Boreale dune field near (a) 84.2°N, 37.9°W and (b) 84.53°N, 0.09°W. Images credit: NASA/JPL/MSSS. In (c) we see the transverse dune profile with the height h rescaled by H (the height at the brink), whereas the downwind position x is rescaled by the dune's along-wind width L. In (d) we see the surface which results after the sand incoming from the upwind is deposited within the separation bubble calculated with u* = 0.9 m/s. By assuming that this surface is indurated, a rounded dune shape is obtained, which does not elongate further to form a straight dune.
