Volcanic activity encompasses all processes associated with the movement and eruption of magma and volatiles from Earth’s interior to its surface, including effusive lava flows, explosive eruptions, degassing, and the formation of associated edifices and deposits. It is governed by magma generation in the mantle and crust, melt composition, temperature, volatile content, and tectonic setting (e.g., subduction zones, rifts, hotspots). Volcanic activity is studied through petrology, geophysics, gas geochemistry, geodesy, and remote sensing to quantify eruption dynamics, magma ascent rates, and hazard potential, and it exerts major controls on crustal growth, surface morphology, and volatile fluxes to the atmosphere and hydrosphere.
Estimates of carbon dioxide (CO2) emissions from volcanoes may have been significantly underestimated, according to new research by The University of Manchester.
Earth Sciences
Apr 2, 2025
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When Hunga Tonga–Hunga Haʻapai, an underwater volcano near Tonga in the South Pacific Ocean, erupted in 2022, scientists expected that it would spew enough water vapor into the stratosphere to push global temperatures ...
Earth Sciences
Apr 2, 2025
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What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) formation and evolution? This is what a recent study presented at the 56th Lunar and Planetary Science ...
Planetary Sciences
Apr 1, 2025
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30
A volcano in southwestern Iceland that has erupted repeatedly for more than a year again belched lava and smoke into the air on Tuesday, just hours after authorities evacuated the few remaining residents of a nearby fishing ...
Environment
Apr 1, 2025
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Venus—a hot planet pocked with tens of thousands of volcanoes—may be even more geologically active near its surface than previously thought. New calculations by researchers at Washington University in St. Louis suggest ...
Planetary Sciences
Mar 31, 2025
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The Mount Lewotobi Laki Laki volcano in south-central Indonesia erupted three times into Friday, sending an ash column 8,000 meters (26,000 feet) high and prompting authorities to expand the danger zone around the volcano.
Environment
Mar 21, 2025
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Lava from Hawaii's most active volcano created fountains that reached 700 feet (215 meters) Thursday during the latest episode of an ongoing eruption.
Environment
Mar 20, 2025
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A volcano near Alaska's largest city is showing new signs of unrest, with experts saying the likelihood of an eruption at Mount Spurr in the next few weeks or months has increased.
Environment
Mar 13, 2025
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The 2019 volcanic explosion on Whakaari/White Island, which killed 22 people touring the crater and severely injured 25, is one of New Zealand's worst disasters.
Environment
Mar 12, 2025
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An erupting Hawaii volcano once again began shooting fountains of lava that reached hundreds of feet high on Tuesday.
Environment
Mar 12, 2025
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