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Which outcome is amplified when glacial meltwater discharge overwhelms existing stream channels?

A)Increased floodplain inundation extent
B)Reduced stream sediment transport
C)Decreased downstream channel sinuosity
D)Enhanced riverbed armouring effect

💡 Explanation

Glacial meltwater pulses cause floodplain inundation because increased flow exceeds channel capacity, causing extensive Hydraulic jumps. This large inundation happens, rather than channel incision, because sediments are mobile and redistributed, rather than uniformly entrained.

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