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volcanoes

Mantle-derived peridotite xenolith from San Carlos, Arizona, showing green olivine crystals.
Posted inScience Updates

Understanding Electrical Signals from Below Earth’s Surface

by A. Pommier and J. Roberts 19 November 20189 March 2023

A new version of a free Web application (SIGMELTS 2.0) helps Earth scientists interpret electrical anomalies in Earth’s crust and mantle and track the sources of earthquakes and volcanic eruptions.

Smokestacks emit thick plumes of pollution that include black carbon.
Posted inNews

Black Carbon Not the Primary Cause of Historic Glacial Retreat

Katherine Kornei, Science Writer by Katherine Kornei 16 November 201818 November 2022

Ice cores and glacial records reveal that European glaciers retreated before the rise of industrialization in the 1870s, suggesting that soot deposition did not primarily drive the shift.

An aerial view of the massive Katla glacier, which might be a bigger source of CO2 than previously estimated
Posted inResearch Spotlights

Volcano in Iceland Is One of the Largest Sources of Volcanic CO2

by Terri Cook 8 November 201815 November 2022

High-precision airborne measurements, in combination with atmospheric modeling, suggest that the Katla subglacial caldera may be one of the planet’s biggest sources of volcanic carbon dioxide.

A 7 August overflight showed weakly bubbling lava at Kīlauea’s fissure 8, a significant change from flows in prior weeks.
Posted inNews

Kīlauea Eruption Abruptly Slows Down

Ilima Loomis, Science Writer by Ilima Loomis 9 August 20182 May 2022

Volcanologists say it’s too soon to know whether the sudden drop in activity signals the end of the eruption or just a pause.

Eruption of Shinmoedake on 27 January 2011
Posted inNews

Two Active Volcanoes in Japan May Share a Magma Source

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 31 July 20186 December 2021

Evidence collected following the 2011 eruption of Japan’s Shinmoedake volcano suggests that the powerful event affected the behavior of an active caldera nearby.

Lava bursts from a fissure on the flanks of Kīlauea volcano
Posted inFeatures

Four Ways Kīlauea Is Redrawing the Map

Ilima Loomis, Science Writer by Ilima Loomis 27 July 20185 October 2021

From burying communities to building new land, this historic eruption is changing the landscape of Hawai‘i Island.

Researchers make final adjustments to drones that will measure volcano gas emissions to improve eruption forecasting science.
Posted inScience Updates

Drones Swoop in to Measure Gas Belched from Volcanoes

by F. D’Arcy, J. Stix, J. M. de Moor, J. Rüdiger, J. A. Diaz, A. Alan and E. Corrales 25 July 201811 January 2022

A team of volcanologists, chemists, physicists, and engineers from around the world test novel techniques at Central America’s two largest degassing volcanoes.

Researchers analyze traces of volcanic activity and water flooding in Hrad Vallis on Mars
Posted inResearch Spotlights

Tracing the Steps of Hydrothermal Activity in Hrad Vallis, Mars

by S. Witman 10 July 201810 October 2021

Conditions that formed Amazonian age valleys may have been hospitable to microbial life.

New evidence suggests volcanoes on China’s Hainan Island are the result of a hot spot
Posted inResearch Spotlights

Linking Mantle Plumes to Volcanoes and Hot Spot Tracks

by E. Underwood 11 June 20184 August 2023

Study bolsters hypothesis that volcanoes on China’s Hainan Island were formed by a hot spot.

Steam plume from Halema'uma'u crater on 1 June 2018
Posted inNews

Huge Spike in Quakes Badly Damages Kīlauea Observatory

Ilima Loomis, Science Writer by Ilima Loomis 5 June 20182 May 2022

Meanwhile, some scientists say that the 35-year eruption from the Pu‘u Ō‘ō vent has ended and that the flows since 3 May are a new eruption. Others take issue with this view.

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