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SUMMARY:Dunes under different conditions: fluid flow variation\, topograph
 ies\, and static objects - Willian Righi Assis (University of Campinas)
DTSTART:20230616T120000Z
DTEND:20230616T130000Z
UID:TALK199126@talks.cam.ac.uk
CONTACT:108503
DESCRIPTION:Different types of bedforms can arise from the interplay betwe
 en a fluid flow and a granular bed. The most common is the crescent-shaped
  dune\, called Barchan\, whose mid-line could be assumed to behave as a tw
 o-dimensional dune. They can be found in some environments\, such as deser
 ts\, rivers\, or even on the surface of Mars. In this study\, we compare t
 he morphology of the midline of barchans with 2D dunes and track the evolu
 tion of dunes under bi-modal changes in the flow direction. In addition\, 
 it will be presented results from dunes interacting with static objects an
 d how different topographies can affect dunes' morphology.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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