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permafrost

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

Seismology: A Promising Tool for Monitoring Permafrost

by Terri Cook 4 November 20215 August 2024

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 202120 September 2023

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 20211 June 2023

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?

Elizabeth Thompson 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.

Plots showing probability distributions derived from measurements of 14C in long-chain fatty acids
Posted inEditors' Highlights

A 2700-year Record of Permafrost Thaw Sensitivity to Climate

by Susan Trumbore 5 May 20219 December 2021

Changes in the 14C ages of carbon and biomarkers deposited at the mouth of a river draining a permafrost watershed track responses of regional thaw depth to past warming and cooling.

Satellite image of the icy Sannikov Strait
Posted inNews

A Massive Methane Reservoir Is Lurking Beneath the Sea

by Fanni Daniella Szakal 27 April 202114 October 2021

Scientists have found a methane reservoir below the permafrost seabed of the Laptev Sea—a reservoir that could suddenly release large amounts of the potent greenhouse gas.

A house built on permafrost, now thawing, tilts dramatically.
Posted inNews

Mapping the People, Places, and Problems of Permafrost Thaw

by J. Besl 21 April 20212 September 2022

By combining demography data with permafrost maps, researchers provide a first count of the population on permafrost and predict its imminent decline.

A patch of grass in the middle of rocks
Posted inNews

Vicuña Poop Nourishes “Dung Gardens” High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 18 March 20214 October 2021

The excrement delivers nutrients like phosphorus and nitrogen, kick-starting islands of vegetation at the edge of the cryosphere.

Observed median July temperatures in eleven headwater streams by the Agashashok, Cutler, and Imelyak rivers in the Noatak river basin.
Posted inEditors' Highlights

Thawing Permafrost May Cause Streams to Cool

by D. Moore 3 March 20213 March 2023

Permafrost thawing associated with climate warming increases contributions to streamflow by deeper, cooler groundwater flow paths, which may result in lower summer stream temperatures.

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