Ice-shelf collapse from subsurface warming as a trigger for Heinrich events.
An analysis of prehistoric “Heinrich events”creating mass discharges of icebergs into the North Atlantic Ocean, make it clear that very small amounts of subsurface warming of water can trigger a rapid collapse of ice shelves, scientists say.
Ancient Tides Quite Different From Today
Geological forces that act over hundreds to millions of years, such as plate tectonics, ice ages, land uplift, erosion and sedimentation, have caused the tides, generally thought to be one of the most predictable forces on Earth, to vary wildly throughout history, according to a new study.