Nonlinear Dynamics of Aeolian Sand Ripples

摘要

We study the initial instability of flat sand surface and further nonlineardynamics of wind ripples. The proposed continuous model of ripple formationallowed us to simulate the development of a typical asymmetric ripple shape andthe evolution of sand ripple pattern. We suggest that this evolution occurs viaripple merger preceded by several soliton-like interaction of ripples.