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[PENDING] The threshold for continuing saltation on Earth and other Solar System bodies D. Berzi

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Figure 1. Sketch of the periodic trajectory: L and H are the trajectory length and height, respectively; U is the horizontal fluid velocity
Figure 2. Numerical (symbols, from numerical solutions of the periodic trajectories) critical Shields parameter, S c , for continuing saltation as a function of the particle Reynolds number, R, for particle-to-fluid density ratios: = 2.5 (circles
Figure 3. Boundary Reynolds number, R * , at the saltation threshold as a function of the density ratio, , for data reported in previous investigations: numerical solutions of the periodic trajectories (open symbols, same as
Figure 4. Critical Shields parameter, S c , as a function of the density ratio, , when R 1/2 =10: discrete element simulations [Durán et al., 2012] (diamonds); present theory without lubrication forces and c
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