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← Earth & Natural SystemsIf increased meltwater discharge enters a glacial moulin, which consequence follows?
A)Decreased sediment deposition rates downstream
B)Accelerated glacial basal sliding velocity✓
C)Enhanced ice crystal recrystallization rate
D)Reduced supraglacial debris accumulation
💡 Explanation
Increased meltwater reaching the glacier bed lubricates the interface because enhanced basal lubrication reduces friction, thereby increasing the rate of basal sliding. Increased meltwater is channeled via moulins, therefore basal sliding accelerates, rather than crystal changes or sediment effects.
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