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volcanoes

Scientists use balloons to measure atmospheric ash and assess how volcanic eruption eruptions affect climate.
Posted inResearch Spotlights

Volcanic Ash Contributes to Climate Cooling

Alexandra Branscombe by A. Branscombe 25 October 201617 November 2022

A new study shows that atmospheric ash reflects solar radiation months after volcanic eruptions.

modeling-heat-source-hydrothermal-reservoir-long-valley-caldera
Posted inResearch Spotlights

Mapping Water and Heat Deep Under Long Valley Caldera

Leah Crane by L. Crane 29 September 201611 January 2022

Researchers use electrical resistivity to find the heat source and reservoir feeding Long Valley Caldera's labyrinthine hydrothermal system.

New research suggests that monitoring changes in gravity near active volcanoes can reveal activity otherwise overlooked.
Posted inResearch Spotlights

The Gravity of Volcanic Eruptions

by W. Yan 27 September 201628 October 2021

New research suggests that continually monitoring gravity changes near active volcanoes could provide insights into volcanic activity.

Lava forms ropey pāhoehoe textures. Magma fueled this lava, but what is the definition of “magma”?
Posted inOpinions

We Need a New Definition for “Magma”

by A. F. Glazner, J. M. Bartley and D. S. Coleman 22 September 20161 February 2022

Confusion over the meaning of "magma" can generate popular misperceptions, including a nonexistent molten sea underneath Yellowstone National Park. We propose a different definition.

Aerial view of Orakei basin, near Auckland, New Zealand, where a research team took core samples near the center of a maar, an ancient volcanic explosion crater.
Posted inScience Updates

Probing the History of New Zealand's Orakei Maar

by P. C. Augustinus 20 September 201623 September 2022

A team of scientists drilled into the bed within a northern New Zealand explosion crater lake to gain insights into volcanic hazards and past climates.

Posted inEditors' Vox

Volcanic Java and Climate Change

by Michael Wysession 12 September 201610 July 2022

An account of a geophysicist's recent trip to Indonesia wouldn't be complete without intrigue and elucidations about what Java, climate change, and Butch Cassidy all have in common.

volcanic-eruption-water-vapor-role-in-climate-change
Posted inResearch Spotlights

Does Water Vapor from Volcanic Eruptions Cause Climate Warming?

Alexandra Branscombe by A. Branscombe 11 August 201629 March 2022

By studying past volcanic eruptions, scientists find that the amount of water vapor reaching the stratosphere during moderately explosive eruptions may not be contributing to the greenhouse effect.

Helium bubbles through hot spring in Rift Valley, Tanzania.
Posted inNews

Tanzanian Volcanoes May Hoard Helium Ready for the Taking

Amy Coombs by A. Coombs 28 July 201623 February 2023

Sweet spots of volcanic heat that are not too close to active eruptions may hold the world's richest reservoirs of the scientifically and medically important gas helium.

A thermal infrared image of the 1991 Mount Pinatubo eruption shows cooler temperatures at the top of the ash cloud.
Posted inResearch Spotlights

Volcanic Eruptions Stir an Already Complex Atmosphere

Leah Crane by L. Crane 25 July 201617 November 2022

A study of Earth's atmospheric response to major volcanic eruptions seeks to reconcile contradictions between observations and climate models.

Lake Nyos, Cameroon, shows red coloration from iron oxides stirred up by the artificial degassing of carbon dioxide from the bottom water.
Posted inScience Updates

Cameroon's Lake Nyos Gas Burst: 30 Years Later

by D. Rouwet, G. Tanyileke and A. Costa 12 July 201611 January 2022

9th Workshop of the IAVCEI-Commission on Volcanic Lakes (CVL9); Cameroon, 14–24 March 2016

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