Which risk increases when a coastal Antarctic region experiences increased glacial melt?

💡 Explanation

Sustained glacial meltwater input reduces surface water salinity, causing reduced density, because this inhibits the sinking required for density-driven deep water formation. Therefore, overall thermohaline circulation declines, rather than enhanced upwelling, which correlates with different coastal dynamics.

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• Which hazard dramatically increases when stratospheric tephra accumulates?
• Which shift causes increased ocean upwelling along the South American coast during a La Niña event?
• Which outcome occurs when soluble bedrock undergoes focused infiltration?
• Which outcome occurs when seasonal subtropical high-pressure systems weaken?