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.
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 that ...
Planetary Sciences
Mar 31, 2025
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50
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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Even by the standards of Io, the most volcanic celestial body in the solar system, recent events observed on the Jovian moon are extreme.
Planetary Sciences
Jan 28, 2025
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189
Rootless cones are small volcanic landforms ranging from several to several hundred meters in diameter, formed by continuous explosions resulting from the interaction between surface lava and water bodies like lakes and rivers. ...
Planetary Sciences
Jan 27, 2025
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Through the intricate study of lava tubes—caves formed following volcanic eruptions when lava cools down—an international team of researchers has uncovered clues about Earth's ancient environments that could be significant ...
Astrobiology
Nov 18, 2024
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