Antarctica’s New Map Reveals Deepest Canyon on Earth

Saturday, December 14, 2019 - 15:41

Antarctica’s new map, called BedMachine Antarctica, has revealed the deepest canyon on Earth’s surface.

According to Science Magazine report, BedMachine Antarctica was released at a meeting of the American Geophysical Union and published in Nature Geoscience.

As shown in the video above, the map has revealed the deepest canyon on Earth’s surface, plunging 3.5 kilometers below sea level under Denman Glacier in East Antarctica, nearly half as deep as Mount Everest is tall.

The uncovered terrain has mixed news for the future of Antarctica’s ice: On the positive side, the map reveals a series of previously unknown ridges that sit above sea level in the deep valleys that drain the Transantarctic Mountains, which helps stabilizes the glaciers above and limits their potential ice loss.

But at West Antarctica’s fastest melting glacier, Thwaites, the news was not good: The glacier is grounded on a ridge below sea level, with a downward sloping basin behind it. The project hoped to turn up more ridges on the basin that could help hold back warm water as Thwaites retreats beyond the two already known. None was found.


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