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.

• Which phenomenon leads to desert formation at approximately 30 degrees latitude north and south?
• Which risk increases when rapid urbanization constricts a river channel with natural levees?
• Which landscape feature dominates when nivation weathers steep cirque headwalls extensively?
• Which geographic phenomenon results from the Coriolis effect acting on large-scale atmospheric circulation?
• Which outcome occurs when the descending air in a Hadley cell is significantly drier than average?
• Which change arises if arid region soils experience increased rainfall?