Which risk increases when intense rainfall saturates alluvial fan deposits?

💡 Explanation

Debris flow channel avulsion risk increases because intense saturation reduces the shear strength; this initiates debris flow caused by gravity-driven sediment transport, rather than slower erosion; therefore channel positions shift rapidly.

• Which outcome commonly occurs when low-silica lava cools rapidly?
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• Which risk is magnified where loess deposits form terraces?
• Which outcome regarding water chemistry occurs, driven via the ventilation in subterranean caves exhibiting high CO2 concentrations?
• Which outcome occurs from enhanced overwash events eroding a barrier island's dune system?