Abstract
Transport of sand particles over desert areas in the lower saltation layer is studied experimentally and theoretically. The trajectories of saltating sand particles are reconstructed by means of high-speed video recording. An instantaneous concentration profile of saltating sand in a layer from 0 to 40 mm is presented. A numerical model of sand particle movement in the surface air layer is developed. The influence of the model parameters on the saltating sand trajectories is analyzed. A method for solution of the inverse problem of saltating sand dynamics is proposed. The reconstruction of dynamic parameters of the problem from saltating sand trajectories is presented. It is found that some turbulent parameters can be estimated from the trajectory measurement data.
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