sediments, documenting a former high stand of Lake Heihai. The fossil lake marls are affected by permafrost and disrupted by segregation ice. In the background, the glaciated peaks of the Kunlun Mountain
Permafrost Beavers are highly effective ecosystem engineers: if a given landscape isn’t quite to their liking, they simply rearrange the terrain. And that’s what they’ve been doing for millennia in [...] to their findings, the animals could change entire ecosystems and contribute to the thawing of permafrost soils, as they report in the journal Global Change Biology.
Nature Communications Study The loss of arctic permafrost deposits by coastal erosion could amplify climate warming via the greenhouse effect. A study using sediment samples from the Sea of Okhotsk [...] Okhotsk on the eastern coast of Russia led by AWI researchers revealed that the loss of Arctic permafrost at the end of the last glacial period led to repeated sudden increases in the carbon dioxide concentration
apparent scars in the world’s permafrost regions. As the new global comparative study conducted by the international permafrost network GTN-P shows, in all regions with permafrost soils the temperature of the
Permafrost In the future, climate change could abruptly increase the amount of methane released by lakes in the permafrost regions of the Arctic. The explanation: because of thawing permafrost, these
Permafrost For years now, scientists have been investigating how the gradual thawing of near-surface permafrost, which takes place in the uppermost layers of Arctic soils and in the course of decades [...] another phenomenon, which has only been sporadically investigated: the abrupt thawing of ice-rich permafrost, which can transform entire landscapes in only months of years through subsidence, the formation
Permafrost The fate of permafrost - soil that is frozen for 2 or more years - is of huge importance for the global climate because of the large amounts of organic carbon stored in it, which can be released
Coastal erosion in the Arctic The thawing and erosion of Arctic permafrost coasts has dramatically increased in the past years and the sea is now consuming more than 20 meters of land per year at some
in the Arctic are no longer just the domain of scientists. The shrinking sea ice and collapsing permafrost coasts are now also becoming topics on the agenda of international politics and industry. To be
expanding lakes can be a sign of degenerating permafrost. However, there is also just the opposite effect: when a lake is crossed by a river, or thaws all of the permafrost below it, it drains; in these cases, [...] The signs of change Satellite imagery provides many indications that the permafrost soils of the Arctic are now thawing The map was still full of blank spots. Polar researchers have known for some time [...] journal Nature Communications. Dr Ingmar Nitze E-Mail Prof Dr Guido Grosse E-Mail Lakes in arctic permafrost regions (Photo: Alfred-Wegener-Institut) How is climate change affecting the soils of the Arctic