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Gulf of Alaska

A glacier between two dark-colored mountains. A snowy mountain reaching up into the clouds is in the background, and blue seawater is in the foreground.
Posted inResearch Spotlights

A Million Years Without a Megaslide

by Rebecca Owen 19 April 202419 April 2024

A new study goes deep into the Gulf of Alaska to examine the sixth-largest underwater landslide and investigate why a similar event hasn’t happened since.

Graph from the paper.
Posted inEditors' Highlights

Compound Extreme Events Threaten Marine Ecosystems

by Eileen Hofmann 23 January 202419 January 2024

Short-term extreme marine heat wave events superimposed on stressors from longer-term climate change produce compound extreme events that impact the Gulf of Alaska ecosystem.

A man wearing a blue life vest stands knee deep in water to collect a water sample downstream of the large glacier in the background.
Posted inResearch Spotlights

Measuring Carbon’s Flow from Land to Sea

by Rebecca Owen 21 November 202321 November 2023

A new study catalogs how dissolved inorganic carbon moves through southeast Alaska’s waterways.

Map of study area with symbols.
Posted inEditors' Highlights

Machine Learning Identifies Source Volcanoes of Ash Deposits

by Paul Asimow 8 November 20236 November 2023

Tracing ash layers from explosive eruptions back to their source volcanoes is needed to evaluate hazards to population and aviation, a problem addressed by a new machine learning classification method.

Photo of an ocean with snow-capped mountains in the background.
Posted inEditors' Vox

Marine Sediments Reveal Past Climate Responses to CO2 Changes

by Sze Ling Ho and Erin McClymont 21 September 202320 September 2023

Climate records stored in marine sediments reveal different ice sheet and ocean responses to falling atmospheric CO2 concentrations from the warm Pliocene to the ice ages of the Pleistocene.

A humpback whale breaches in the Gulf of Alaska.
Posted inNews

Years After the Pacific Marine Heat Wave, Ecosystem Shifts Persist

Hannah Thomasy, Science Writer by Hannah Thomasy 3 May 202125 October 2021

Researchers question whether Gulf of Alaska species will return to pre–heat wave conditions.

Landscape view showing mountains, forests, and other vegetation within the Héen Latinee Experimental Forest north of Juneau, Alaska
Posted inResearch Spotlights

Determining Dissolved Organic Carbon Flows into the Gulf of Alaska

by David Shultz 15 January 202122 December 2021

A new model determines freshwater and dissolved organic carbon discharge to the Gulf of Alaska from one of the most geographically diverse but understudied regions on the planet.

Iceberg in water
Posted inNews

Sediment Layers Pinpoint Periods of Climatic Change

Katherine Kornei, Science Writer by Katherine Kornei 14 October 20208 September 2022

Researchers studying sediment cores from the Gulf of Alaska have pinpointed when the Cordilleran Ice Sheet, now extinct, disgorged icebergs into the Pacific Ocean.

Researchers look at offshore sediments to trace the history of the world’s tallest coastal mountain range
Posted inResearch Spotlights

A Mountain Range's History Preserved in Ocean Sediments

by Terri Cook 7 April 201729 June 2022

Fission track dating core samples from the Gulf of Alaska demonstrates that offshore sediments can be used to reconstruct a mountain range's changing exhumation patterns.

A view of a Washington, D.C., skyline from the Potomac River at night. The Lincoln Memorial (at left) and the Washington Monument (at right) are lit against a purple sky. Over the water of the Potomac appear the text “#AGU24 coverage from Eos.”

Features from AGU Publications

Research Spotlights

On the Origins of Subantarctic Mode Waters

2 June 20252 June 2025
Editors' Highlights

Seasonal Iron Cycle and Production in the Subantarctic Southern Ocean

29 May 202529 May 2025
Editors' Vox

Rock Glacier Velocity: Monitoring Permafrost Amid Climate Change

3 June 20252 June 2025
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