Which outcome occurs when wind velocity decreases suddenly across desert dunes?

💡 Explanation

Sediment avalanches will occur; because decreased wind velocity cannot support loose material destabilized beyond the Angle of Repose via gravity causing grain flows and avalanches. Therefore, a slipface avalanche occurs, rather than saltation because thresholds are unmet or morphology stabilized by exhumation erosion.

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• Which outcome occurs when a cooled lava flow's surface prevents gas escape?
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