186062.fig.001
Figure 1: Top: wind is blowing from the right to the left and transports a thickness of sediment from cell A to cell B. This distance corresponds to the saltation length, which depends on the wind velocity and sediment grain size. Bottom: the corresponding profile. Note the size of each cell is sufficiently larger than individual grains, thus, each saltation step 648 in this model represents the movement of a large number of grains [9].