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← GeographyWhich mechanism reduces ocean gyre intensity following heightened glacial meltwater discharge?
A)Increased eddy formation dissipating energy
B)Enhanced thermohaline driven stratification✓
C)Weakened Coriolis effect changing currents
D)Reduced upwelling absorbing surface momentum
💡 Explanation
When glacial meltwater enters the ocean, increased stratification occurs, because freshwater is less dense, suppressing vertical mixing and weakening momentum transfer in gyres. Therefore strengthened thermohaline stratification results, rather than eddy formation, Coriolis shifts, or modified upwelling, which involve different circulation processes at larger scales.
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