Stratigraphic, granulometric and Infra-Red Stimulated Luminescence dat
ing studies on a 7-m high transverse dune in the Thar Desert provide e
vidence of high variability in dune accretion and mobility rates durin
g the last 2000 years. Human activity during recent years has increase
d dune mobility beyond the rates seen under natural situations. (C) 19
98 Academic Press Limited.