Ripple and kink dynamics
arXiv:cond-mat/0106117 · doi:10.1103/PhysRevE.64.041302
Abstract
We propose a relevant modification of the Nishimori-Ouchi model [{\em Phys. Rev. Lett.} {\bf 71}, 197 (1993)] for granular landscape erosion. We explicitly introduce a new parameter: the angle of repose , and a new process: avalanches. We show that the parameter leads to an asymmetry of the ripples, as observed in natural patterns. The temporal evolution of the maximum ripple height is limited and not linear, according to recent observations. The ripple symmetry and the kink dynamics are studied and discussed.
7 pages, 10 figure, RevTeX