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How barchan dunes distribute over deserts | | Orencio Durán
; Veit Schwämmle
; Pedro G. Lind
; Hans J. Herrmann
; | | Date: |
16 Jan 2007 | | Subject: | Soft Condensed Matter | | Abstract: | We derive an equation for fields of barchan dunes, which relates the fundamental macroscopic properties characterizing a dune field, namely the inter-dune spacing and the first and second moments of the dune size distribution. This equation is obtained from a mean-field approach and is fulfilled for both simulations and real dune fields. Further, we show that the dune size distributions are log-normal and dunes tend to distribute uniformly in space. Finally, based on simulations, we derive the relationship between these properties and the boundary conditions, giving a theoretical quantitative picture of an entire dune field. | | Source: | arXiv, cond-mat/0701367 | | Services: | Forum | Review | PDF | Favorites | |
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