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Andes

Planet Labs image of the downstream impacts of the 28 April 2025 Glacial Outburst Flood (GLOF) / landslide at Vallunaraju in Peru.
Posted inThe Landslide Blog

The 28 April 2025 Glacial Outburst Flood (GLOF) / landslide at Vallunaraju in Peru

by Dave Petley 2 May 20252 May 2025

The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. On 28 April 2025, a major debris flow travelled down a channel from a major mountain, Vallunaraju, striking the communities lower down the slope. At least 100 houses were destroyed and two […]

Satellite view of rectangular evaporation ponds used for lithium mining located amid a bright white salt flat.
Posted inOpinions

Concerns over Lithium, Water, and Climate in Earth’s Two Highest Deserts

by Lan Cuo 27 August 202413 February 2025

Brine mining to meet resource demands amid renewable energy transitions is affecting water resources in South America and China. Hydrologists can help understand how and join the search for solutions.

A wide, flat area of tan-colored earth, with mountains in the distance. In the foreground, a paler, gray-colored substance appears to overlay the ground. Streaks of the tan-colored ground are visible beneath the gray substance.
Posted inResearch Spotlights

Tracing Millions of Years of Geologic Stress in the Andean Plateau

by Nathaniel Scharping 15 July 202415 July 2024

Paleostress modeling shows how a region of the Andean Plateau was uplifted and formed beginning more than 20 million years ago.

Photo of a glacier sitting on top of rock.
Posted inEditors' Highlights

Plants Reveal the History of Earth’s Largest Tropical Ice Cap

by Ann Rowan 16 January 20249 January 2024

Rooted plants buried by advancing outlet glaciers illustrate rapid changes in the extent of Quelccaya Ice Cap in Peru during the Holocene.

A forest of green trees in the foreground with low clouds and mountain peaks behind
Posted inResearch Spotlights

Short-Lived Solutions for Tall Trees in Chile’s Megadrought

by Rebecca Dzombak 31 May 202331 May 2023

Some southern beeches in the Andes have plumbed deeper for moisture as the surface has dried up. But doing so may deplete resources and undermine the trees’ future health.

A snow-capped volcano appears against a bright blue sky and is reflected in lake water of the same bright blue. In the foreground are green shrubs and a boulder.
Posted inNews

Supervolcanoes Linger a While, Then Rush to Erupt

Damond Benningfield, Science Writer by Damond Benningfield 12 September 202212 September 2022

Geologists examined crystals in rock from four massive eruptions in the Chilean Andes.

A glacier- and snow-covered high mountain peak with glacial lakes
Posted inFeatures

Adapting to Receding Glaciers in the Tropical Andes

by Tania V. Rojas, Duncan Quincey, Pedro Rau, Daniel Horna-Muñoz and Jorge D. Abad 8 October 20211 June 2023

Integrated approaches are needed to understand and respond to changes in tropical mountain ecosystems and communities brought about by receding glaciers and changes in land use.

Mountain located in the Andes
Posted inResearch Spotlights

Past Climate Change Affected Mountain Building in the Andes

Sarah Stanley, Science Writer by Sarah Stanley 7 April 202111 December 2021

Increased glaciation in the North Patagonian Andes may have influenced tectonic dynamics over the past 7 million years, suggesting a connection between climate change and mountain-building processes.

A patch of grass in the middle of rocks
Posted inNews

Vicuña Poop Nourishes “Dung Gardens” High in the Andes

Katherine Kornei, Science Writer by Katherine Kornei 18 March 20214 October 2021

The excrement delivers nutrients like phosphorus and nitrogen, kick-starting islands of vegetation at the edge of the cryosphere.

Schematic cross section across the Cordillera Blanca massif and conceptual model for structural controls on fluid circulation
Posted inEditors' Highlights

Structural Style Controls Crustal Fluid Circulation in Andes

by W. Behr 26 August 202028 January 2022

Variations in hot spring geochemistry from adjacent mountain ranges with different styles of faulting highlight the influence of crustal-scale structures on circulating fluids in the Peruvian Andes.

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