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volcanoes

Satellite image of ancient lava flows on Mars
Posted inNews

This One Simple Trick Helps Us Understand How Much Water Is in Martian Lavas

Erik Klemetti, Science Writer by Erik Klemetti 24 August 202216 September 2022

Understanding how much water is in Martian magma is vital for understanding whether the Red Planet had seas in its early history.

A diagram and a graph showing how ocean island eruptions are much more likely to exhibit SO2 degassing and deformation.
Posted inEditors' Highlights

Why Do Arc Volcanoes Deform Less Than Ocean Island Volcanoes?

by Paul Asimow 15 August 202215 November 2022

Volcanic ground deformation is not simply correlated with erupted volume. Researchers propose that high concentrations of magmatic volatiles make systems more compressible and suppress deformation.

Global ROTI map focusing on the Asia-Oceania sector and two graphs showing Swarm C and Swarm B paths.
Posted inEditors' Highlights

Tonga Volcanic Eruption Produced Ionospheric Hole and ‘Bubbles’

by Huixin Liu 10 August 20229 September 2022

The 2022 Tonga volcano eruption altered the global ionosphere, creating a huge ionospheric hole locally near the epicenter and large-amplitude plasma bubbles remotely over the Asia-Oceania area.

Illustration of wildfire and wetland forest during the end-Permian extinction interval.
Posted inNews

A Spike in Wildfires Contributed to the End-Permian Extinction

by Jackie Rocheleau 2 August 20225 June 2023

An upward trend in fossilized charcoal indicates that wildfires may have contributed to extinctions during the Great Dying.

Photo of tubes of rock samples on a laboratory table with a microscope in the background.
Posted inNews

Stretching Crust Explains Earth’s 170,000-Year-Long Heat Wave

by Jennifer Schmidt 27 July 202227 July 2022

During a brief period in Earth’s past, a massive emission of carbon abruptly raised global temperatures, acidified oceans, and stamped out species. New data may help explain how it happened.

The Fagradalsfjall volcano erupts in Iceland on 20 March 2021.
Posted inNews

Mapping a Volcanic Eruption in the Backyard of Iceland’s Capital

by Stacy Kish 19 July 202219 July 2023

Researchers used satellites and aerial data to create regularly updated maps of the Fagradalsfjall eruption for both the public and disaster response agencies.

Four-paneled figure, with the upper right panel showing Today Show coverage, with both the initial question directed to the @USGSVolcanoes Twitter account from user @JayFurr, “Is it safe to roast marshmallows over volcanic vents?” and the response, “Erm…we’re going to have to say no.” The upper left panel shows CNN coverage with an image of the eruption and the headline “USGS: ‘Please don’t roast marshmallows over lava.’” The lower left panel shows MSNCB coverage, which shows only the initial tweet. The lower right panel shows MSNBC’s parody of the NBC public service announcement graphic, in which, against the background of space filled with stars, the purple words “The S’more You Know” are underlined by a yellow shooting star.
Posted inNews

Roosters, S’mores, and #EmergencyCute: A Humor-in-Crisis How-To

by Alka Tripathy-Lang 15 July 202227 March 2023

When natural hazards strike communities, we may not think science agencies should respond with humor. Researchers suggest that sometimes, however, humor can connect communities and bring smiles.

Lava in the Halemaʻumaʻu crater in the Kīlauea volcano.
Posted inNews

Volcanic Lava Lake Belts Out Its Secrets in Seismic “Songs”

by Andrew J. Wight 15 July 20229 March 2023

A cacophony of magma displacements and volcanic gases recorded underneath Kīlauea’s roiling lake of lava could one day provide information to help predict future eruptions.

Photograph of a volcano erupting.
Posted inEditors' Vox

Dynamics of Volcanic Processes

by Olivier Roche, Yosuke Aoki, Nikolai Bagdassarov, Michael Heap, Sigrun Hreinsdottir, Qinghua Huang, Daniel Pastor-Galán, Michael Poland, Maria Sachpazi, Fang-Zhen Teng, Gregory P. Waite, Marie Edmonds, Paul Asimow, Minghua Zhang and Graziella Caprarelli 6 July 202220 September 2022

A new cross-journal special collection invites contributions on modern approaches used to investigate dynamics of volcanic processes.

Four satellite images showing pyroclastic material infill between 2014 and 2019.
Posted inEditors' Highlights

Volcanic Creation and Destruction of Temporary Tephra Storage

by Agnes Kontny 1 July 20225 June 2023

Pyroclastic density currents (PDCs) are a major threat during an explosive volcanic eruption. A new study shows that loose tephra accumulations on volcanic slopes tend to re-mobilize rapidly.

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Features from AGU Publications

Research Spotlights

Machine Learning Simulates 1,000 Years of Climate

27 August 202527 August 2025
Editors' Highlights

As Simple as Possible: The Importance of Idealized Climate Models

28 August 202526 August 2025
Editors' Vox

Waterworks on Tree Stems: The Wonders of Stemflow

21 August 202520 August 2025
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