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Progress in Earth and Planetary Science
Fig. 1 | Progress in Earth and Planetary Science

Fig. 1

From: Simple stochastic cellular automaton model for starved beds and implications about formation of sand topographic features in terms of sand flux

Fig. 1

Sand patches repeatedly appearing and disappearing. An identical run (average sand thickness of 0.65) is shown at different times: a 35,000 steps, b 50,000 steps; the sand moves from the left to right. A sand patch (enclosed by the oval in a) vanished 15,000 steps later. Note that there is only a little sand in the area downstream of the sand patch, which suggests that the sand patch gathers sand from upstream. Nevertheless, under this condition, the sand patch does not grow to an isolated ripple. The height of one slab is one-tenth the length of one cell

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