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Science News by AGU

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Alaska

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.

A black-and-white photograph of a river.
Posted inNews

What a Gold Mining Mishap Taught Us About Rivers

by Jenessa Duncombe 13 January 202221 March 2022

Miners in Alaska rerouted a river to search for gold. One hundred years later, the new channel is teaching scientists how rivers shape Earth.

Plot showing the latitudinal profile of F-region meridional wind as a function of local time for the day of 4 January 2019.
Posted inEditors' Highlights

Thermospheric Cross-Polar Winds Observed to Unexpectedly Stall

by Michael P. Hickey 7 October 202113 October 2021

Observations of cross-polar cap neutral winds near 240 km altitude stalling over short distances in the midnight sector near Poker Flat, Alaska, challenge the standard view of high-latitude dynamics.

Image of Sean de Guzman of the California Department of Water Resources conducting a snow survey in the Sierra Nevada.
Posted inFeatures

The Changing Climate’s Snowball Effect

by Korena Di Roma Howley 24 September 202112 April 2022

Shrinking snowpack, thawing permafrost, and shifting precipitation patterns have widespread consequences. Can new technologies—and public policies—help communities adapt?

A student takes notes in Arctic Alaska.
Posted inNews

Testing on the Tundra: NASA Snow Program Heads North

by J. Besl 27 July 202122 October 2021

With infrastructure, experience, and a slice of the world’s largest snow biomes, Alaska is an essential research destination for NASA’s multiyear SnowEx campaign.

Sunrise over snow.
Posted inNews

Laser Flashes Shed Light on a Changing Arctic

by Katherine Kornei 18 May 202116 February 2022

An ongoing project in northern Alaska is using pulses of laser light to monitor anthropogenic activity, ice quakes, and marine wildlife.

Aerial view of Taku Glacier’s terminus in Taku Inlet
Posted inScience Updates

The Imminent Calving Retreat of Taku Glacier

by C. McNeil, J. M. Amundson, S. O’Neel, R. J. Motyka, L. Sass, M. Truffer, J. M. Zechmann and S. Campbell 18 February 202129 September 2021

Long an anomaly among glaciers, advancing while most others shrank, Taku Glacier is starting to succumb to climate change, offering an unprecedented look at the onset of tidewater glacier retreat.

View looking out a helicopter cockpit over remote eastern Alaska landscape
Posted inScience Updates

Ancient Rivers and Critical Minerals in Eastern Alaska

by A. Bender, R. Lease, J. V. Jones III and D. Kreiner 29 July 20206 December 2021

Fieldwork is revealing a history of landscape evolution over the past 5 million years that links climate change and river capture to critical mineral resources across the Alaska-Yukon border.

Plan view of the LeConte Glacier and fjord system in Alaska
Posted inEditors' Highlights

First Field Observations of Ocean Melting a Tidewater Glacier

by M. Morlighem 13 February 202010 February 2022

Using autonomous kayaks, researchers carried out measurements of water properties near the terminus of LeConte Glacier and showed that ice/ocean interactions are more complex than thought.

Aerial view of buildings on a narrow spit of land
Posted inNews

Helping Alaskan Communities Facing Climate Risks

by Randy Showstack 7 February 202029 April 2022

Scientists examine how best to use science to help communities respond to rapid climate change in the Arctic.

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From AGU Journals

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Geophysical Research Letters
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