Untitled Page 1 Page 2 GEOMORPHOLOGY OF DESERT DUNES Sand dunes cover up to a
quarter of many desert regions. Determining the factors that determine their shape, size and …

Dunes form where winds blow over a bed of mobile sediment grains–conditions that are
common in our solar system. On Earth, dunes abound in arid continental interiors and along …

Wherever a loose bed of sand is subject to sufficiently strong winds, aeolian dunes form at
predictable wavelengths and growth rates. As dunes mature and coarsen, however, their …

Sand patches are one of the precursors to early stage protodunes and occur widely in both
desert and coastal aeolian environments. Here we show field evidence of a mechanism to …

The north polar region of Mars, with its greater atmospheric pressure and vast inventory of
ever-changing volatiles (eg, CO 2, H 2 O), hosts arguably the most active and diverse …

Based on the interactions between mountains, we identified three sand flow channels in the
Badain Jaran, Tengger, and Ulan Buh Deserts, northern China. We found that the height …

Early‐stage bedforms develop into mature dunes through complex interactions between
wind, sand transport, and surface topography. Depending on varying environmental and …

Decimeter‐scale early‐stage aeolian bedforms represent topographic features that differ
notably from their mature dune counterparts, with nascent forms exhibiting more gently …

We have numerically investigated the turbulent flow and sediment grain motion in an open-
channel flow configuration over a subaqueous sediment bed featuring two-dimensional …

Nous passons en revue les principaux processus qui déterminent la morphodynamique des
dunes, c'est-à-dire leur croissance en hauteur, leur migration et leur élongation, et nous …