Jump at the onset of saltation
M. V. Carneiro, T. P\"ahtz, H. J. Herrmann

TL;DR
This paper demonstrates a discontinuous transition in the saturated flux of aeolian saltation through explicit particle motion simulations, revealing complex flow behaviors and a new flux-wind strength relationship.
Contribution
It introduces a novel simulation approach showing a discontinuous flux transition and coexistence of metastable states in aeolian saltation.
Findings
Discontinuous transition in saturated flux.
Existence of two metastable solutions.
Modified wind profile with a second maximum.
Abstract
We reveal a discontinuous transition in the saturated flux for aeolian saltation by simulating explicitly particle motion in turbulent flow. The discontinuity is followed by a coexistence interval with two metastable solutions. The modification of the wind profile due to momentum exchange exhibits a second maximum at high shear strength. The saturated flux depends on the strength of the wind as .
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