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← GeographyWhich process leads to reduced salinity stratification in a fjord after unusually heavy glacial meltwater discharge?
A)Enhanced surface convection mixing✓
B)Increased tidal current amplitude
C)Upwelling of deep saline water
D)Reduced riverine sediment flocculation
💡 Explanation
When heavy glacial meltwater is discharged, enhanced surface convection occurs because the freshwater lens increases, making the surface layer less dense and prone to mixing by wind and cooling, reducing stratification. Therefore convection mixing results, rather than increased tides, upwelling, or flocculation, each of which require different drivers.
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