Which mechanism interrupts thermohaline circulation when glacial ice melt increases significantly?

💡 Explanation

When glacial meltwater increases, density stratification occurs because freshwater is less dense than saltwater, inhibiting the sinking of cold, salty water which drives thermohaline circulation. Therefore density decrease disrupts the circulation, rather than salinity increase, temperature increase, or viscosity increase, which would either enhance or have no effect on it.

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