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Geography

Which increased hazard occurs when rapid snowmelt saturates an alluvial fan?

A)Debris flow channel avulsion
B)Decreased sediment transport capacity
C)Enhanced soil horizon development
D)Reduced groundwater recharge rates

💡 Explanation

Increased debris flow channel avulsion results because saturated sediment loses cohesion, leading to increased pore pressure and reduced shear strength; therefore, channel paths become unstable, rather than exhibiting increased stability under high moisture conditions.

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