Which consequence results when extensive Antarctic ice melt disrupts deepwater formation?

💡 Explanation

A reduction in dense, cold water formation near Antarctica weakens the global thermohaline circulation, because this sinking water drives deep ocean currents. Therefore, overall circulation decreases, rather than jet stream changes which occur more in atmosphere.

• Which mechanism minimizes seismic wave energy transmitted across a fault line during earthquakes?
• Which process causes increased sediment deposition in a proglacial lake?
• Which process primarily drives the formation of a deep fjord from a pre-existing U-shaped glacial valley?
• Which risk increases because of reduced flow velocity in an oxbow lake compared to the main river channel?
• Along strike-slip faults, which mechanism causes formation of sag ponds in arid environments?
• Which hazard increases when a river's natural levee system is artificially reinforced and raised?