‘Zombie’ greenhouse gas lurks in permafrost beneath the Arctic Ocean
Millions of tons of organic carbon and methane beneath the Arctic Ocean thaw out and ooze to the surface each year. And climate change could speed up this release of greenhouse gases, new research suggests. The carbon tied up in organic matter and methane (a carbon atom bound to four hydrogen atoms) are currently trapped […]
subsea permafrost is still waking up after 12,000 years
The coastline of the Bykovsky Peninsula in the central Laptev Sea, Siberia retreats during summer, when ice-rich blocks of permafrost fall to the beach and are eroded by waves. Credit: 2017, P. Overduin In the far north, the swelling Arctic Ocean inundated vast swaths of coastal tundra and steppe ecosystems. Though the ocean water was […]
Ancient wolf pup mummy in Yukon permafrost from 57,000 years ago — ScienceDaily
While water blasting at a wall of frozen mud in Yukon, Canada, a gold miner made an extraordinary discovery: a perfectly preserved wolf pup that had been locked in permafrost for 57,000 years. The remarkable condition of the pup, named Zhùr by the local Tr’ondëk Hwëch’in people, gave researchers a wealth of insights about her […]
Exquisitely-preserved wolf pup mummy discovered in Yukon permafrost
A female wolf pup mummy, perfectly preserved as it remained locked in permafrost for 57,000 years, is finally giving up some of its secrets, including how the grey wolf died and ended up alone in the ice so long ago. The mummified grey wolf (Canis lupus) was discovered by a gold miner excavating permafrost in […]
Rising temperatures lead to collapse of intact permafrost soils — ScienceDaily
Around a quarter of the ground in the northern hemisphere is permanently frozen. These areas are estimated to contain about twice as much carbon as the world’s current atmosphere. New research says that these permafrost soils are not only increasingly thawing out as the Earth becomes warmer, but also releasing that carbon, which accelerates the […]
Coastal permafrost more susceptible to climate change than previously thought
Micaela Pedrazas (left) and Cansu Demir, both graduate students at The University of Texas at Austin Jackson School of Geosciences, examining an exposed side of an ice wedge polygon, which was uncovered by erosion and melting. An ice lens is visible to the right of Demir. Credit: Bayani Cardenas If you flew from the sea […]
Arctic Ocean sediments reveal permafrost thawing during past climate warming — ScienceDaily
Sea floor sediments of the Arctic Ocean can help scientists understand how permafrost responds to climate warming. A multidisciplinary team from Stockholm University has found evidence of past permafrost thawing during climate warming events at the end of the last ice age. Their findings, published in Science Advances, caution about what could happen in the […]
Arctic Ocean sediments reveal permafrost thawing during past climate warming
Rigging gravity corer on the deck of icebreaker Oden on SWERUS-C3 expedition 2014. Credit: Björn Eriksson Sea floor sediments of the Arctic Ocean can help scientists understand how permafrost responds to climate warming. A multidisciplinary team from Stockholm University has found evidence of past permafrost thawing during climate warming events at the end of the […]
Arctic Ocean sediments reveal permafrost thawing during past climate warming
IMAGE: Rigging gravity corer on the deck of icebreaker Oden on SWERUS-C3 expedition 2014. view more Credit: Björn Eriksson Sea floor sediments of the Arctic Ocean can help scientists understand how permafrost responds to climate warming. A multidisciplinary team from Stockholm University has found evidence of past permafrost thawing during climate warming events at the end […]
