“We are watching this sleeping giant wake up right in front of our eyes,” said Merritt Turetsky, an ecologist at the University of Guelph. “We work in areas where permafrost contains a lot of ice, and our field sites are being destroyed by abrupt collapse of this ice, not gradually over decades, but very quickly over months to years.”
“One-fourth of all the land in the northern half of the globe is defined as permafrost. This long-frozen soil is home to the detritus of life over many thousands of years: the remains of plants, animals and microbes. The permanently frozen soils of the region hold, so far in a harmless state, 1,600 billion tonnes of carbon: twice as much as exists in the atmosphere.”
“And as the Arctic warms, this could release ever-greater volumes of a potent greenhouse gas, to accelerate global warming still further, and the consequent collapse of the soil, the flooding and the landslides could change not just the habitat but even the contours of the high latitudes.” Read more . . .
Read the researcher’s article published in Nature (International Journal of Science) April 30, 2019 HERE. It is well worth the time. The first image of the Batagaika crater in eastern Russia is stunning. Look closely at the trees to get a feel for its size and character.
Abrupt thawing of permafrost is dramatic to watch. Returning to field sites in Alaska, for example, we often find that lands that were forested a year ago are now covered with lakes. Rivers that once ran clear are thick with sediment. Hillsides can liquefy, sometimes taking sensitive scientific equipment with them.