Arctic ice melt is changing ocean currents

A major ocean current in the Arctic is faster and more turbulent as a result of rapid sea ice melt, a new study from NASA shows. The current is part of a delicate Arctic environment that is now flooded with fresh water, an ...

Arctic ice sets speed limit for major ocean current

The Beaufort Gyre is an enormous, 600-mile-wide pool of swirling cold, fresh water in the Arctic Ocean, just north of Alaska and Canada. In the winter, this current is covered by a thick cap of ice. Each summer, as the ice ...

Giant iceberg escapes

In July 2017, one of the largest icebergs on record calved from the Larsen C ice shelf in Antarctica. However, sea ice to the east and shallow waters to the north kept this giant berg, named A68, hemmed in. So for more than ...

An underwater glider for measuring turbulence in Lake Geneva

Huge systems of rotating water masses—called gyres—form in oceans and large lakes. Two EPFL laboratories, working with the University of California, Davis, are using an underwater glider to explore one such gyre in Lake ...

Microbes in the seafloor: Little nutrients, lots of oxygen

About one quarter of the global seafloor is extremely nutrient poor. Contrary to previous assumptions, it contains oxygen not just in the thin surface layer, but also throughout its entire thickness. The underlying basement ...

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