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Alaska

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

How an Unlikely Friendship Upended Permafrost Myths

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 19 August 202226 April 2023

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

Two maps of the study region displaying earthquake depth as colored dots.
Posted inEditors' Highlights

Aftershocks Reveal Coseismic Rupture of Megathrust Earthquakes

by Agnes Helmstetter 28 July 202221 September 2022

More accurate aftershock zones reveal that the rupture areas of megathrust Aleutian–Alaska earthquakes are larger than we thought and partly overlap, in contradiction with the seismic gap hypothesis.

Map of Alaska showing the study regions and a bar graph showing wildfire events by year.
Posted inEditors' Highlights

Lightning in Alaskan Tundra Ignites Most Fires

by Valeriy Ivanov 19 July 202211 August 2022

Cloud-to-ground lightning is found to be the most important controller of wildfire occurrence in the Artic tundra of Alaska from 2001 to 2019.

Polygons created by melting permafrost
Posted inNews

More Fires, More Problems

by Danielle Beurteaux 1 February 202227 March 2023

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

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 13 January 202227 March 2023

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

Korena Di Roma Howley, Science Writer by Korena Di Roma Howley 24 September 202123 March 2023

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

Four cormorants stand atop a channel marker.
Posted inScience Updates

Cormorants Are Helping Characterize Coastal Ocean Environments

by R. A. Orben, A. G. Peck-Richardson, G. Wilson, D. Ardağ and J. A. Lerczak 23 September 202131 May 2023

The Cormorant Oceanography Project is using sensors deployed on diving marine birds to collect broadly distributed oceanographic data in coastal regions around the world.

A student takes notes in Arctic Alaska.
Posted inNews

Testing on the Tundra: NASA Snow Program Heads North

by J. Besl 27 July 202111 August 2022

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

Katherine Kornei, Science Writer 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.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
Geophysical Research Letters
“Neural Networks Map the Ebb and Flow of Tiny Ponds”
By Sarah Derouin

EDITORS' HIGHLIGHTS
Community Science
“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
Reviews of Geophysics
“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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