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← GeographyWhich 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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