One volcanologist said Mount Etna was spewing 'unprecedented quantities' of the volcanic vortex rings – potentially because of 'so much bad news' happening lately.
A rare event was caught on camera over the weekend at Italy 's Mount Etna , the most active stratovolcano in the world. The Sicilian volcano was seen spewing rare and nearly perfectly circular volcanic vortex bubbles – at some points, appearing pink in color against the sky. Giuseppe Barbagallo, a member of the South Etna Alpine Guides Group, told Reuters that a new pit crater formed along the volcano within the past week or so.
After creating model simulations, scientists learned that the formation of the rings 'requires a combination of fast gas release from gas bubbles at the top of the magma conduit and regularity in the shape of the emitting vent.' Boris Behncke, a volcanologist at the National Institute of Geophysics and Volcanology in Catania, told a local news outlet that Etna produces more volcanic vortex rings than any other volcano on Earth.
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