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Alaska

Posted inFeatures

Как необычная дружба разрушила мифы о вечной мерзлоте

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 20 September 202320 September 2023

“Прекрасные долгие споры” между американским ученым и российским исследователем помогли прояснить несколько фундаментальных предположений о таянии вечной мерзлоты.

Diagram from the paper.
Posted inEditors' Highlights

Northern Ecosystems are Shaped by Snow

by David S. Schimel 12 September 202313 September 2023

Changing climate in the Arctic leads to a shorter snow season but deeper snow in the depths of winter. Under the insulating snow, biological processes are accelerated leading to higher nutrient availability and carbon losses.

An emperor penguin is standing on a sheet of ice with a row of other penguins sliding on their bellies.
Posted inEditors' Vox

Landfast Sea Ice: The Most Important Ice You’ve Never Heard Of

by Pat Wongpan and Alexander D. Fraser 22 August 202321 August 2023

Landfast sea ice, sea ice that is held stationary against the Antarctic continent, links firmly with many key climate processes, but its importance is only being fully realized as its extent dwindles.

A beaver swims with a stick through a creek in front of tall grass and brush.
Posted inResearch Spotlights

Beavers Are Remaking Microbial Ecosystems in the Arctic

by Saima May Sidik 22 August 202322 August 2023

As beavers expand their range northward into the Arctic tundra, changes in bacterial, archaeal, and fungal communities appear to be following.

Photo of a riverbank in Alaska.
Posted inEditors' Highlights

Frozen Riverbanks May Erode Faster in a Warming Arctic

by Marisa Repasch 16 August 202315 August 2023

Frozen flume experiments reveal the sensitivity of permafrost riverbank erosion to water temperature, bank roughness, and pore-ice content.

Bretwood “Hig” Higman stands on a landslide hummock on the shore of Taan Fjord. In 2015, the landslide visible in the background triggered a 193-meter (633-foot) tsunami in the area.
Posted inFeatures

Hig Higman: Trekking Across the Last Frontier on the Hunt for Geohazards

by J. Besl 25 July 202325 July 2023

Higman specializes in human-powered research expeditions in Alaska’s epic landscape.

Map and graphs from the paper.
Posted inEditors' Highlights

Machine Learning Helps Constrain the Thickness of Ancient Crust

by Emily Chin 1 June 202331 May 2023

A machine learning model trained using data on the chemical composition of magmatic rocks yields comparable, if not better, results to previously developed geochemical proxies.

在一个体育场馆内搭建的临时医院里,病人躺在一排排的病床上。
Posted inResearch Spotlights

COVID-19让你感觉不舒服?也许是天气的问题

by Saima May Sidik 2 May 20232 May 2023

高湿和低温改变了COVID-19在巴西的传播,但影响不大。

An aerial photograph of a remote, forested lake surrounded by forest.
Posted inFeatures

Hunting for Methane Hot Spots at the Top of the World

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 26 April 202326 April 2023

A visit to an Alaskan wetland with some of the world’s highest lake marsh methane emissions brings scientists one step closer to understanding the phenomenon.

The Old Crow River meanders between Alaska and the Yukon in the Arctic.
Posted inNews

As the Arctic Warms, These Rivers Are Slowing Down

by Danielle Beurteaux 14 April 202317 April 2023

The Arctic is warming up, but instead of large rivers migrating faster, they’re actually slowing down because of shrubification.

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By Muki Haklay

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

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