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volcanoes

The uninhabited island of Hunga Tonga–Hunga Haʻapai was destroyed by the massive volcanic eruption in January 2022.
Posted inNews

People Need to Think Bigger About Volcanic Catastrophes

by Katharine Gammon 22 September 202222 September 2022

New research outlines the risk of catastrophic eruptions and urges policymakers to support more widespread monitoring.

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.

Photograph of a Global Seismographic Network station with mountains in the background.
Posted inEditors' Vox

Global Seismic Networks: Recording the Heartbeat of the Earth

by Adam T. Ringler 9 September 20229 September 2022

Global broadband seismographic networks have provided the science community with 30 years of data which is being used to understand the Earth.

Photo of Cerro Aconcagua, the highest mountain in the Americas
Posted inEditors' Vox

Old Igneous Rocks Hold the Key to Crustal Thickness Evolution

by Peter Luffi and Mihai Ducea 7 September 202229 September 2022

The chemical composition of orogenic igneous rocks and their zircons is sensitive to crustal thickness and can be used to quantify the evolution of Moho depths beneath continents back in time.

A Velociraptor with white, black, and red feathers runs with its mouth open.
Posted inENGAGE, News

Volcanic Winters Ushered in the Jurassic Reign of the Dinosaurs

Katherine Kornei, Science Writer by Katherine Kornei 31 August 202222 March 2023

Sediment cores from northwestern China reveal freezing conditions during the Late Triassic killed off many forms of life—but not dinosaurs.

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.

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Improving Eddy Tower Evapotranspiration Estimates

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Recycled Rocks Reveal Subduction Zone Dynamics Off Baja California

21 May 202621 May 2026
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The Impact of Advocacy: American Geophysical Union’s Days of Action

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