DOI: 10.1002/grl.50757
论文题名: An agent-based model of dune interactions produces the emergence of patterns in deserts
作者: Génois M. ; Du Pont S.C. ; Hersen P. ; Grégoire G.
刊名: Geophysical Research Letters
ISSN: 0094-8738
EISSN: 1944-8469
出版年: 2013
卷: 40, 期: 15 起始页码: 3909
结束页码: 3914
语种: 英语
英文关键词: barchan field
; collision of dunes
; corridors of dunes
; self-organization
Scopus关键词: Agent-based model
; barchan field
; collision of dunes
; corridors of dunes
; Dune collisions
; Elementary rules
; Self organizations
; Wind directions
; Arid regions
; Computational methods
; Earth (planet)
; Landforms
; Wind effects
; barchan
; collision
; desert
; dilution
; self organization
英文摘要: Crescent-shaped barchan dunes are highly mobile dunes which are ubiquitous on Earth and other solar system bodies. Although they are unstable when considered separately, they form large assemblies in deserts and spatially organize in narrow corridors that extend in the wind direction. Collision of barchans has been proposed as a mechanism to redistribute sand between dunes and prevent the formation of very large dunes. Here we use an agent-based model with elementary rules of sand redistribution during collisions to access the full dynamics of very large barchan fields. We tune the dune field density by changing the sand load/lost ratio and follow the transition between dilute fields, where barchans barely interact, and dense fields, where dune collisions control and stabilize the dune field. In this dense regime, barchans have a small, well-selected size and form flocks: the dune field self-organizes in narrow corridors of dunes, as it is observed in real dense barchan deserts. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881156498&doi=10.1002%2fgrl.50757&partnerID=40&md5=3a880de14e97af36fda1c37a2c52e626
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6002
Appears in Collections: 气候减缓与适应
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作者单位: Laboratoire Matière et Systèmes Complexes, University of Paris Diderot, Bâtiment Condorcet, 10 rue A. Domon et Léonie Duquet, 75205 Paris Cedex 13, France
Recommended Citation:
Génois M.,Du Pont S.C.,Hersen P.,et al. An agent-based model of dune interactions produces the emergence of patterns in deserts[J]. Geophysical Research Letters,2013-01-01,40(15).