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Volcanic Vortex Rings
April 17 , 2024
13 days
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- Mount Etna, the largest volcano in Europe, has been sending up almost perfect rings of smoke into the air.
- The rings are a rare phenomenon that scientists refer to as volcanic vortex rings.
- Vortex rings are generated when gas, predominantly water vapour, is released rapidly through a vent in the crater.
- The vent that has opened up in Etna’s crater is almost perfectly circular.
- The phenomenon was first observed at Etna and Vesuvius in Italy in 1724, and has been documented in an engraved plate from 1755.
- The Etna volcano’s eruptive history can be traced back 500,000 years. At least 2,700 years of this activity has been documented.
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