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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An Icelandic volcano neighbouring Eyjafjoell, whose eruptions paralysed Europe's skies last month, could come to life in the near future, according to experts.
Earth Sciences
May 26, 2010
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Mount Etna in Sicily has roared back into spectacular volcanic action, sending up plumes of ash and spewing lava.
Environment
Aug 24, 2018
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535
(PhysOrg.com) -- Floating ash plumes from Iceland's Eyjafjallajokull volcano have caused massive disruption to the world's air traffic, highlighting the danger that volcanic ash plumes pose to aircraft.
Earth Sciences
Apr 21, 2010
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The Philippines raised the alert level for the country's most active volcano twice in 24 hours Sunday, meaning that a hazardous eruption is possible within days.
Environment
Jan 14, 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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111
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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158
(PhysOrg.com) -- From space, NASA keeps a watchful eye on volcanic activity around the world with many satellites. NASA has just released satellite images showing activity this week from volcanoes in the countries of Eritrea, ...
Earth Sciences
Jul 11, 2011
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A volcano in southwestern Japan is erupting for the first time in six years, spewing ash over nearby farms, cities and towns.
Environment
Oct 12, 2017
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A volcano off New Zealand sent a plume of steam two kilometres (1.24 miles) into the air Tuesday, although volcanologists described the eruption as small and said it was over in minutes.
Earth Sciences
Aug 20, 2013
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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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