title: Nonlinear dynamics of Aeolian sand ripples.
abstract: We study the initial instability of flat sand surface and further nonlinear dynamics of wind ripples. The proposed continuous model of ripple formation allowed us to simulate the development of a typical asymmetric ripple shape and the evolution of a sand ripple pattern. We suggest that this evolution occurs via ripple merger preceded by several soliton-like interaction of ripples.
authors.affiliation: Center for Energy and Environmental Physics, Blaustein Institute for Desert Research, Ben Gurion University of the Negev, Sede Boqer Campus 84990, Israel.
authors.forename: L
authors.initials: L
authors.lastname: Prigozhin