What ocean circulation system is hypothesized to have shut down due to freshwater influx during the Younger Dryas?
Answer
The thermohaline circulation
The influx of freshwater from melting glaciers, specifically Lake Agassiz draining into the North Atlantic, is thought to have caused a partial or complete shutdown of the global conveyor belt known as the thermohaline circulation.

Related Questions
What is the leading scientific theory describing the universe's quiet, frigid demise?What is the scientific name for the terrestrial cooling event sometimes referred to as the 'Big Freeze'?What ocean circulation system is hypothesized to have shut down due to freshwater influx during the Younger Dryas?What component is estimated to comprise about 69 percent of the universe's total mass-energy content and drives accelerated expansion?What marks the end of the Stelliferous Era in the cosmological timeline?What specific process is responsible for the eventual evaporation of black holes during the Black Hole Era?What hypothetical process, supported by some Grand Unified Theories, could lead to the disintegration of baryonic matter during the Degenerate Era?What is the final stage of the universe's evolution called, beginning after the last black hole evaporates?What is the required condition on dark energy for the universe to experience a Big Rip?What final state does the universe asymptotically approach, where no energy gradients remain?