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volcanoes

The magma system underneath Lipari is connected to a fault system formed by tectonic activity rather than to volcanoes.
Posted inScience Updates

Seismic Sensors Probe Lipari’s Underground Plumbing

by F. Di Luccio, P. Persaud, L. Cucci, A. Esposito, G. Ventura and R. W. Clayton 15 July 201911 May 2022

An international team of scientists installed a novel, dense network of 48 seismic sensors on the island of Lipari to investigate the active magma system underground.

Mount St. Helens memorial at Johnston Ridge Observatory
Posted inFeatures

Honoring Volcanologist David Johnston as a Hero and a Human

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 27 June 20192 May 2022

A new biography details the life and legacy of the scientist who died on Mount St. Helens.

View from the north of the Krafla power plant in Iceland’s Krafla caldera.
Posted inScience Updates

Planning an International Magma Observatory

by J. Eichelberger 25 June 20199 March 2023

A planned project will drill into a magma reservoir in Iceland that has never erupted to the surface, giving scientists a fresh look at Earth’s underground “plumbing.”

On 3 March 2015, Villarrica volcano near Pucón, Chile, erupted briefly but violently, for the first time in 30 years.
Posted inScience Updates

Monitoring Volcanic Craters with Infrasound “Music”

by Jeffrey B. Johnson and L. M. Watson 17 June 20195 October 2021

Volcanic craters act as giant horns that emit intense low-frequency sounds. Changes in this infrasound may be used to track rising lava lakes and identify signals of future eruptions.

Vista of Half Dome and Yosemite National Park
Posted inNews

Role of Continental Arcs in Global Carbon Dioxide Emissions

Erik Klemetti, Science Writer by Erik Klemetti 10 June 20197 March 2023

Continental arcs are a major player in global carbon dioxide emissions, but quantifying that relationship is hard. A new study accepts the challenge on a global scale over 750 million years.

Satellite image of a city between a volcano and a lake
Posted inNews

Eruption in El Salvador Was One of the Holocene’s Largest

Katherine Kornei, Science Writer by Katherine Kornei 5 June 201922 August 2023

Roughly 1,500 years ago, the Tierra Blanca Joven eruption blanketed Central America in ash and likely displaced Maya settlements, new research shows.

The Bishop Tuff in California
Posted inResearch Spotlights

Paleomagnetism Indicators May Be Flawed

Aaron Sidder, freelance science writer by Aaron Sidder 3 June 201914 March 2023

A new study finds that magnetism in volcanic ash tuff forms through varied processes, calling into question previously reliable signatures used to study variations in Earth’s magnetic field.

Pluto’s Elliot crater and Virgil Fossae
Posted inNews

Ammonia Ice Deposits on Pluto Hint at Recent Cryovolcanism

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 29 May 201923 January 2023

This discovery is the latest in a growing stack of evidence pointing to the presence of an ammonia-rich water ocean beneath Pluto’s icy crust.

X-ray tomography images of experimental magmas captured at different crystal contents
Posted inEditors' Highlights

Crystals Connect Bubbles in Explosive Magmas

by S. D. Jacobsen 28 May 20195 October 2022

Hydrous silica-rich magmas can degas through connected bubble pathways when as little as 20% crystals are present, influencing transitions from explosive, Vulcanian-style eruptions to lava effusion.

Artist’s conception of the asteroid Psyche
Posted inEditors' Highlights

On the Prospect of Ancient Metallic Volcanism on Asteroids

by A. Dombard 24 May 201915 February 2022

There is a possibility of ancient volcanism on metallic asteroids, a new type of volcanism that is not yet observed, though the Psyche mission to the asteroid Psyche may change that soon.

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