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Greenland

Figure showing viscosity estimates for mantle underneath Greenland.
Posted inEditors' Highlights

4D Viscosity Constraints from Greenland 

by Thorsten Becker 28 March 202324 March 2023

The mantle’s resistance to flow appears different for glacial and plate tectonic timescales but this behavior can be reconciled with new thermo-mechanical models of the asthenosphere.

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.

Riverbed construction
Posted inFeatures

Grains of Sand: Too Much and Never Enough

by Alka Tripathy-Lang 25 January 202317 February 2023

Sand is a foundational element of our cities, our homes, our landscapes and seascapes. How we will interact with the material in the future, however, is less certain.

Photo of a polar bear and two cubs traversing a field of snow and ice
Posted inNews

Glacial Ice Offers Polar Bears a Precarious Climate Refuge

by Elise Cutts 9 December 202222 March 2023

An isolated polar bear population in southeastern Greenland survives in fjords, despite spotty sea ice. But this pocket of bears is not a sign of how the species could be saved.

Aerial view of sea ice meeting open water with snowy coastal hills in the background
Posted inResearch Spotlights

Dissecting Ocean Dynamics in Greenland Fjords

Aaron Sidder, freelance science writer by Aaron Sidder 18 November 2022

Researchers explored the patterns and drivers of variability in fjords linking the Greenland Ice Sheet and the Atlantic Ocean using numerical simulations and in situ observations.

A view over open ocean toward a large iceberg with part of a large yellow spherical mooring float in the foreground
Posted inResearch Spotlights

When Winds and Currents Align, Ocean Mixing Goes Deep

Sarah Derouin, Science Writer by Sarah Derouin 31 October 202217 November 2022

Slantwise convection in the Irminger Sea off Greenland appears to mix ocean water to deeper depths than previously thought, representing an important contribution to Atlantic overturning.

Scientists ride a boat on a lake in Greenland.
Posted inNews

Evidence of Drought Provides Clues to a Viking Mystery

Korena Di Roma Howley, Science Writer by Korena Di Roma Howley 4 August 202224 March 2023

A persistent drying trend, not plunging temperatures, may have played a role in the unexplained disappearance of Norse settlers from Greenland, according to researchers.

Figures from the paper, showing simulated Ural blocking event.
Posted inEditors' Highlights

Arctic Sea Ice is Crucial for Forecasting Ural Blocking

by Yimin Liu 12 May 202221 December 2022

By solving the nonlinear optimization problem, sea ice concentration in Greenland, Barents and Okhotsk Seas is found crucial for prediction of strong and long-lasting Ural blocking formation.

A wall of ice looms over an expanse of rocks.
Posted inNews

Impact Structure Hidden Under Arctic Ice Dates to the Paleocene

Katherine Kornei, Science Writer by Katherine Kornei 13 April 202213 April 2022

Greenland’s Hiawatha impact structure, more than 30 kilometers in diameter, is much older than previously thought, new results suggest.

Meltwater draining through a crack in a glacier
Posted inNews

It’s Getting Hot Under Greenland

by Danielle Beurteaux 29 March 202229 March 2022

Meltwater draining through an area of the Greenland Ice Sheet creates enough energy to rival that of a massive hydroelectric power station, researchers say.

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