Basic Types of Dunes - Dune Worlds: How Windblown Sand Shapes Planetary Landscapes - page 85

Fig. 6.24 Reoriented crestlines of linear dunes and possible hooked
barchans on Titan (Ewing et al. 2012). These features are near the
limit of the features that can be resolved with the Cassini radar

mapper, but appear to show crestline morphologies and orientations
that are inconsistent with the overall sand accumulation in linear
ridges. Compare with Fig. 6.23 . Image courtesy of Alexander Hayes

Fig. 6.25 A corridor of barchan-like forms seen from a kite in the
United Arab Emirates. These dunes have slip faces on both sides,
indicating that the wind regime here is a somewhat reversing one.
Photo R. Lorenz