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Alaska

A rock basin with snow on its edges has recently been emptied of water.
Posted inResearch & Developments

Glacial Lake Outburst Causes Record River Crest in Juneau

by Emily Dieckman 13 August 202513 August 2025

The Mendenhall River in Juneau, Alaska, reached a record-breaking crest Wednesday morning thanks to a glacial outburst flood (GLOF) from Suicide Basin. At 16.65 feet, the crest exceeded the previous record flood stage of 15.99 feet in 2024.

An initial view of the 10 August 2025 landslide onto the South Sawyer Glacier.
Posted inThe Landslide Blog

Updates from the Alaska Earthquake Center regarding the 10 August 2025 landslide

by Dave Petley 13 August 202513 August 2025

The location of this major event has now been identified. It was a major rock slope failure that ran out across the South Sawyer Glacier. The Alaska Earthquake Center has now provided a detailed update about the 10 August 2025 landslide that occurred in the area of Tracy Arm. This work has been led by […]

Satellite image of Tracy Arm inlet.
Posted inThe Landslide Blog

A likely large, tsunamigenic landslide in Tracy Arm inlet, Alaska on 10 August 2025

by Dave Petley 11 August 202511 August 2025

Seismic data and eye-witness reports of a displacement wave point to a large landslide at 5:30 am. On 10 August 2025, at 5:30 am local time, the Alaska Earthquake Center detected a seismic signal that was almost certainly generated by a landslide. They have posted the record of the seismic signal to Twitter. Their posting […]

A satellite image of a river becoming a fan-shaped delta and then draining into the ocean.
Posted inResearch Spotlights

Arctic Rivers Trade Inorganic Nitrogen for Organic

by Saima May Sidik 6 August 20256 August 2025

Climate change is shifting the makeup of a key nutrient in rivers across Russia, Alaska, and Canada, with the potential for ecosystem-wide impacts.

Google Earth image of the landslide at the Barry Glacier in Alaska in 2019.
Posted inThe Landslide Blog

Landslides during periods of glacial retreat in Alaska

by Dave Petley 30 June 202530 June 2025

An excellent new paper (Walden et al. 2025) examines the occurrence of accelerated movement in rock slope landslides in Alaska as adjacent glaciers melt. The exceptional temperatures in recent days in both North America and Europe has once again highlighted the rate at which the climate is changing in response to anthropogenic increases in greenhouse […]

The landslide on the Lakina River in Alaska. Photograph posted to Facebook by John Matthews.
Posted inThe Landslide Blog

A landslide on the Lakina River in Alaska

by Dave Petley 5 June 20255 June 2025

A recent Facebook post has highlighted a reasonably large slump landslide in a remote area of Alaska. Satellite images suggest that this occurred in late October or early November 2024. Loyal reader Andrew McNown kindly highlighted a recent Facebook post that provided some images of a landslide that has partially blocked the Lakina River in […]

A garden with colorful trees and a waterfall.
Posted inNews

As Climate Changes, So Do Gardens Across the United States

by Grace van Deelen 28 May 202528 May 2025

Warmer winter temperatures have altered frost patterns and growing seasons across the United States, forcing botanical gardens and arboretums to adapt.

Photo taken from a plane of a small community by a body of water.
Posted inEditors' Highlights

Work with Indigenous Communities Advances Community Science

by Raj Pandya 2 May 20251 May 2025

Drawing from climate co-production work with the community of Kake in Alaska, two new studies offer insights for doing community science—especially, but not only, with Indigenous communities.

Una montaña, un glaciar y el cielo azul se ven refleados en un tranquilo lago.
Posted inResearch Spotlights

Los lagos y estanques de Alaska revelan los efectos del derretimiento del permafrost

by Saima May Sidik 21 March 202521 March 2025

Un nuevo conjunto de datos proporciona un método poderoso para rastrear fácilmente los cambios en el permafrost.

A mountain, glacier, and blue sky are reflected in the surface of a calm lake.
Posted inResearch Spotlights

Alaska’s Lakes and Ponds Reveal Effects of Permafrost Thaw

by Saima May Sidik 19 February 202521 March 2025

A new dataset provides a powerful method for easily tracking changes in permafrost.

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