thawful
Holes the size of city blocks are forming in the Arctic seafloor
https://edition.cnn.com/2022/03/14/world/arctic-seafloor-holes-permafrost-scn/index.htmlMarine scientists have discovered deep sinkholes -- one larger than a city block of six-story buildings -- and ice-filled hills that have formed "extraordinarily" rapidly on a remote part of the Arctic seafloor.
Mapping of Canada's Beaufort Sea, using a remotely operated underwater vehicle and ship-mounted sonar, revealed the dramatic changes, which the researchers said are taking place as a result of thawing permafrost submerged underneath the seabed.
The changes the scientists observed occurred between 2010 and 2019, during which four mapping surveys had taken place, covering an area of up to 10 square miles (26 square kilometers).
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We know that big changes are happening across the Arctic landscape, but this is the first time we've been able to deploy technology to see that changes are happening offshore too," said marine geologist Charlie Paull, a senior scientist at Monterey Bay Aquarium Research Institute and one of the lead authors of a study on the phenomenon published Monday in the peer-reviewed scientific journal PNAS.