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← GeographyWhich 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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