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permafrost

Autonomous underwater vehicle being loaded onto a ship
Posted inNews

Groundwater Flow May Contribute to Submarine Permafrost Thaw

by Jack Lee 18 May 202218 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 202214 April 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 202131 December 2021

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 202114 January 2022

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

An image of Germany’s highest peak, Zugspitze.
Posted inResearch Spotlights

Seismology: A Promising Tool for Monitoring Permafrost

by Terri Cook 4 November 20216 December 2021

Passive seismic data from a station atop Germany’s highest peak reveal a 15-year record of permafrost degradation, suggesting that this technique could be used for long-term environmental monitoring.

The Duvannyi Yar thaw site on the Kolyma River in Siberia
Posted inResearch Spotlights

Minimal Evidence of Permafrost Carbon in Siberia’s Kolyma River

by Terri Cook 20 September 202128 February 2022

New research finds that Arctic rivers currently transport limited permafrost-derived dissolved organic carbon, which has implications for understanding the region’s changing carbon cycle—and its potential to accelerate climate change.

Active layer detachments in the Brooks Range, Alaska
Posted inResearch Spotlights

Ice Lenses May Cause Many Arctic Landslides

by Morgan Rehnberg 13 August 202120 October 2021

When permafrost thaw reaches concentrations of ice underneath the surface, it may trigger local soil instability.

View from atop a glacier looking toward mountains on the horizon
Posted inOpinions

Chile’s Glacier Protection Law Needs Grounding in Sound Science

by A. Fernández, S. MacDonell, M. Somos-Valenzuela and Á. González-Reyes 6 July 202122 November 2021

In the works for more than a decade, proposed legislation to protect glacial and permafrost environments in Chile suffers from uncertainties and omissions that could sow conflict instead of solutions.

Thawing permafrost on various peatlands in Alaska
Posted inResearch Spotlights

How Much Carbon Will Peatlands Lose as Permafrost Thaws?

by Elizabeth Thompson 3 June 20219 December 2021

How much carbon peatlands may lose—or accumulate—in the future varies from place to place, according to a process-based model.

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From AGU Journals

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“Climate Change Drives Widespread and Rapid Thermokarst Development in Very Cold Permafrost in the Canadian High Arctic”
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“Probabilistic Description of Streamflow and Active Length Regimes in Rivers”
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