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Deep Ocean Circulation

All articles tagged with #deep ocean circulation

Underwater Waterfall in Denmark Strait Drops 3,500 Meters, Driving Atlantic Circulation
science2 months ago

Underwater Waterfall in Denmark Strait Drops 3,500 Meters, Driving Atlantic Circulation

The Denmark Strait cataract is the world’s largest waterfall, an underwater, density-driven flow where cold Nordic seawater plunges about 3,500 meters down a deep seabed, moving roughly 3.5 million cubic meters per second across a ~480 km-wide slope and shaping the Atlantic’s deep circulation.

Mars’s Hidden Gravity Tunes Earth’s Climate Across Millennia
science3 months ago

Mars’s Hidden Gravity Tunes Earth’s Climate Across Millennia

A Nature Communications study finds Mars subtly nudging Earth’s orbit through gravitational resonance—altering orbital eccentricity every 26 months and, over millions of years, affecting how much solar energy Earth receives. Geological records from the deep ocean show a ~2.4-million-year cycle tied to stronger deep currents and abyssal eddies, linking planetary motion to long-term climate and ocean dynamics. While this is an ancient, slow driver and not responsible for today’s warming, it helps refine climate models and underlines ocean-system resilience (even if AMOC slows or changes).