Electrically charged volcanic ash short-circuited Earth's atmosphere in 1815, causing global poor weather and Napoleon's defeat, says new research.
Earth Sciences
Aug 22, 2018
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The January 15, 2022, eruption of Hunga Volcano in Tonga continues to break records. According to a new study, the eruption created a "supercharged" thunderstorm that produced the most intense lightning ever recorded. There ...
Earth Sciences
Jun 20, 2023
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A study conducted by scientists at the U.S. Geological Survey, the National Oceanic and Atmospheric Administration, and Vaisala Inc., published yesterday in the Geological Society of America's journal Geology, discusses how ...
Earth Sciences
Jan 19, 2022
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Manchester-based Volcanologists have developed a method and camera that could help reduce the dangers, health risks and travel impacts of ash plumes during a volcanic eruption.
Earth Sciences
Oct 24, 2018
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Researchers report in a new study that they've documented rumblings of volcanic thunder for the first time, a feat considered nearly impossible by many volcanologists.
Earth Sciences
Mar 15, 2018
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An LMU team has, for the first time, created volcanic lightning in the lab and captured it on film. The new findings may permit rapid characterization of ash clouds released by volcanic eruptions and improve forecasting of ...
Earth Sciences
Jan 10, 2014
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(Phys.org) —Studying volcanos can be hazardous work, both for researchers and aircraft. To penetrate such dangerous airspace, unmanned aerial vehicles (UAVs), especially those with electric engines that ingest little contaminated ...
Earth Sciences
Apr 2, 2013
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(Phys.org)—The amount of ash released by Iceland's Eyjafjallajökull volcano during April 2010 was significantly underestimated at the time of the eruption, according to a new model developed at the University of Bristol ...
Earth Sciences
Feb 25, 2013
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How much ash will be injected into the atmosphere during Earth's next volcanic eruption? Recent eruptions have demonstrated our continued vulnerability to ash dispersal, which can disrupt the aviation industry and cause billions ...
Earth Sciences
Jul 23, 2012
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(AP) -- A volcano on a remote Alaska island has begun erupting, but poses little danger to people or aircraft, officials said Tuesday.
Earth Sciences
Aug 10, 2011
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An eruption column consists of hot volcanic ash emitted during an explosive volcanic eruption. The ash forms a column rising many kilometres into the air above the peak of the volcano. In the most explosive eruptions, the eruption column may rise over 40 km, penetrating the stratosphere. Stratospheric injection of aerosols by volcanoes is a major cause of short-term climate change.
A common occurrence in explosive eruptions is for column collapse to occur. In this case, the eruption column is too dense to be lifted high into the air by air convection, and instead falls down the flanks of the volcano to form a pyroclastic flow or surge.
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