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permafrost

Aerial image of the 1952 landslide showing the debris path that leads into the ocean
Posted inNews

A 1952 Landslide Hints at Early Permafrost Thaw in the Arctic

by Andrew Chapman 22 March 202322 March 2023

Scientists took a deeper look at a 70-year-old slide and found that climate change likely set the stage for the disaster.

Diagram showing various glacial lake outburst flood process chains
Posted inEditors' Highlights

Artificial Lake-Level Lowering Alleviates Floods in the Himalayas

by Dongfeng Li 8 March 20236 March 2023

A new model combining future permafrost degradation and related avalanches demonstrates that artificial lake-lowering could significantly reduce the risk of glacial lake outburst floods.

Map of the Yukon-Kuskokwim Delta in Alaska
Posted inEditors' Highlights

The Burning Tundra

by Marguerite A. Xenopoulos 4 October 202219 January 2023

As wildfires blaze through the Arctic, scientists examine the role of landscape characteristics on wildfire ecosystem responses in northern aquatic ecosystems.

Three scientists discuss around a map on a table.
Posted inFeatures

How an Unlikely Friendship Upended Permafrost Myths

by Jenessa Duncombe 19 August 202230 November 2022

“Beautifully long arguments” between an American scientist and a Russian researcher helped clarify several fundamental assumptions about permafrost thaw.

Three field photographs showing different vegetation types.
Posted inEditors' Highlights

It’s Cool to be Short When You’re in the Arctic Permafrost

by Ankur R. Desai 15 July 202225 July 2022

Extensive ground temperature measurements complicate our understanding of how vegetation cover, snow duration, and microtopography influence the pace of permafrost thaw in a changing climate.

Autonomous underwater vehicle being loaded onto a ship
Posted inNews

Groundwater Flow May Contribute to Submarine Permafrost Thaw

by Jack Lee 18 May 202231 May 2022

New, detailed surveys from the Beaufort Sea reveal a seafloor depression the size of a city block associated with permafrost thaw and likely influenced by the movement of groundwater below.

A 3-D image of the study area of Liu et al. [2022] in Kuuguluk River at Salluit, Nunavik (Quebec), Canada. The image shows the locations of A-A’ and B-B’ and lines C1-5.
Posted inEditors' Highlights

Why is Permafrost Groundwater Surfacing?

by Victor Bense 21 April 20227 September 2022

Hydrogeological properties of degrading permafrost come to fruition with a new 3-D modeling study that highlights the increasing role of groundwater in the water cycle of high-latitude areas.

Polygons created by melting permafrost
Posted inNews

More Fires, More Problems

by Danielle Beurteaux 1 February 202221 March 2022

Increasing incidents of wildfires in the Arctic are not only thawing permafrost but changing the entire underlying structure of the region.

Two illustrations of arctic lakes show the relative carbon dioxide and methane release, for the cases with and without widespread permafrost
Posted inEditors' Highlights

Hot Lakes in a Cold Climate

by David S. Schimel 31 December 202119 October 2022

Arctic warming may release less carbon dioxide from high latitude lakes but increase their climate impact by releasing more methane.

The Zapolyarnoye gas field in the Russian Arctic in 2013
Posted inNews

Projection: $110 Billion in Repairs for Russian Pipelines on Permafrost

by Jenessa Duncombe 16 December 20218 September 2022

Permafrost thaw is a major threat to pipelines in the Russian Arctic, particularly those carrying natural gas.

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