Slippages in sediment beneath the Antarctic seabed could spawn gigantic tsunamis as oceans warm.
Climate change could unleash gigantic tsunamis in the Southern Ocean by triggering underwater landslides in Antarctica, a new study warns.
Researchers first found evidence of ancient landslides off Antarctica in 2017 in the eastern Ross Sea. Trapped underneath these landslides are layers of weak sediment crammed with fossilized sea creatures known as phytoplankton. "During subsequent cold climates and ice ages these slippery layers were overlain by thick layers of coarse gravel delivered by glaciers and icebergs," Robert McKay, director of the Antarctic Research Centre at Victoria University of Wellington and co-chief scientist of International Ocean Discovery Program Expedition 374 — which extracted the sediment cores in 2018 — told Live Science in an email.
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