风成波纹的形成与砂粒分选
Formation of aeolian ripples and sand sorting.
作者信息
Manukyan Edgar, Prigozhin Leonid
机构信息
Department of Solar Energy and Environmental Physics, Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Sede Boqer Campus, 84990 Israel.
出版信息
Phys Rev E Stat Nonlin Soft Matter Phys. 2009 Mar;79(3 Pt 1):031303. doi: 10.1103/PhysRevE.79.031303. Epub 2009 Mar 19.
We present a continuous model capable of demonstrating some salient features of aeolian sand ripples: the realistic asymmetric ripple shape, coarsening of the ripple field at the nonlinear stage of ripple growth, saturation of ripple growth for homogeneous sand, typical size segregation of sand, and formation of armoring layers of coarse particles on ripple crests and windward slopes if the sand is inhomogeneous.
我们提出了一个连续模型，该模型能够展示风成沙波纹的一些显著特征：逼真的不对称波纹形状、波纹生长非线性阶段波纹场的粗化、均匀沙的波纹生长饱和、典型的沙粒尺寸分选，以及如果沙子不均匀，在波纹顶部和迎风坡上形成粗颗粒的装甲层。
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