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Geography

Which outcome occurs when increased glacial meltwater enters subglacial stream systems in Greenland?

A)Accelerated glacier flow and ice discharge
B)Formation of stable, stratified water columns
C)Increased sediment deposition at fjord mouths
D)Reduced basal lubrication and ice adhesion

💡 Explanation

Accelerated glacier flow occurs because increased meltwater causes enhanced basal lubrication through the Weis-Fogh mechanism, decreasing friction between the ice and bedrock; therefore the ice flows faster rather than adhering, forming distinct layers, or increasing stability.

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