Environmental Engineering Reference
In-Depth Information
FIGURE 7.64
Transverse dune migration inland for
about 25 km (northeast coast of
Brazil).
Wind direction
Barchan dunes
U-shaped dunes
Transverse
dunes
Longitudinal dunes
FIGURE 7.65
Various classes of dunes. (From Zumberberg, J. H. and Nelson, C. A.,
Elements of Geology
, Wiley, New York,
1972. Reprinted with permission of John Wiley & Sons, Inc.)
FIGURE 7.66
Portion of ERTS 1 image showing crescentric dunes of a megabarchan desert in Saudi Arabia over a distance of
183 km. (Original image by NASA, reproduction by USGS, EROS Data Center.)
