On the crescentic shape of barchan dune

Details On the crescentic shape of barchan dune On the crescentic shape of barchan dune

2003-08-06

arxiv.org/abs/cond-mat/0308100v2

Physics

Condensed Matter

Soft Condensed Matter

8 pages, 9 figures, submitted to Eur. Phys. J. B v2 : major changes in grammar and in presentation

Scientific paper

10.1140/epjb/e2004-00087-y

Aeolian sand dunes originate from wind flow and sand bed interactions. According to wind properties and sand availability, they can adopt different shapes, ranging from huge motion-less star dunes to small and mobile barchan dunes. The latter are crescentic and emerge under a unidirectional wind, with a low sand supply. Here, a 3d model for barchan based on existing 2d model is proposed. After describing the intrinsic issues of 3d modeling, we show that the deflection of reptating particules due to the shape of the dune leads to a lateral sand flux deflection, which takes the mathematical form of a non-linear diffusive process. This simple and physically meaningful coupling method is used to understand the shape of barchan dunes.

Affiliated with

Also associated with

No associations

Rating

On the crescentic shape of barchan dune does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the crescentic shape of barchan dune, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the crescentic shape of barchan dune will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-685657