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← GeographyA newly formed glacial lake breaches its moraine dam; which process controls flash flood development downstream?
A)Knich wave propagation
B)Hydraulic jump formation✓
C)Ablation exceeding accumulation
D)Sediment load deposition
💡 Explanation
Flood waves surge forward in a hydraulic jump because the rapid deceleration causes energy dissipation and rising water rather than wave propagation; therefore a hydraulic jump indicates dangerous water volume increase, rather than mere ablation processes.
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