Other Dunes and Other Sand Deposits - Dune Worlds: How Windblown Sand Shapes Planetary Landscapes - page 93

Fig. 7.10 a, b Parabolic dunes and blowout dunes (from Fig. 9 of McKee 1979). Arrow indicates the unimodal wind regime. Horns point into
the upwind direction, opposite from what the orientation would be for barchan dunes. Image USGS
Fig. 7.11 ASTER image of
large linears ('uruq') in the Rub'
Al Khali. Superposed on the
somewhat rounded giant linear
dunes are a smaller set of dunes,
inclined at a slight angle. Image
courtesy of NASA/GSFC/METI/
ERSDAC/JAROS, and U.S./
Japan ASTER Science Team