Sinkhole in Arctic Sea
Sinkhole is Arctic Sea
Marine scientists have discovered deep sinkholes in the Arctic seafloor. These scientists say the sinkhole is larger than a city block of six-story buildings. The mapping of Canada's Beaufort Sea, using a remotely operated underwater vehicle and ship-mounted sonar, revealed the dramatic changes the researchers said are taking place as a result of thawing permafrost submerged underneath the seabed.
It's the first time an area of a frozen layer of Earth's surface has been surveyed in this way, and it's not known how widespread similar changes are elsewhere in the Arctic.
Many of the landscape changes seen on terrestrial permafrost have been attributed to warmer temperatures due to the climate crisis -- the Arctic is warming two times faster than the global average. However, the authors said the changes they'd identified could not be explained by human-caused climate change.
According to CNN, a scientist explained; Water-filled cavities had replaced the excess ice once contained within the permafrost. When these cavities collapsed, the giant sinkholes observed in this study were rapidly formed. The pingo-like mounds began where the salty water produced by the permafrost decay migrated upward and froze, blistering the seafloor with ice-cored piles.
What are your thoughts on this sinkhole? Do you think there are others? Does climate change cause it?