Basic Types of Dunes - Dune Worlds: How Windblown Sand Shapes Planetary Landscapes - page 82

Fig. 6.19 Linear dunes of the Namib desert, viewed from the Space
Shuttle, looking southwest with the Atlantic in the background. It was

in fact this image that inspired the interpretation of Titan's dunes as
linears. Image NASA JSC Earth Observation Laboratory

Fig. 6.20 View from a kite-
borne camera of a linear dune at
Quattaniya, Egypt (see also
Sect 3.6 ). The meandering crest
is typical of seif dunes—slip
faces may develop seasonally as
winds reverse. Notice the shallow
plinth of sand, wider on the right
side than the left, on which the
dune proper sits. Photo R. Lorenz