Unusual scenes on the Italian island of Sicily: the volcano Etna emits white curls of smoke. The so-called volcanic vortex rings come from a newly formed crater in the southeastern crater. They are caused by small explosions of gas bubbles in a narrow throat above a magma chamber.
Etna (in Italian: Etna) was nicknamed “Lady of the Rings” by the locals.
It is certainly not the first time such figures have been seen: such rings were first mentioned 300 years ago, in 1724. However, the phenomenon is quite rare – and if it does, not with such frequency .
Thousands of rings have been spotted since the new mouth opened.
The term volcanic vortex rings was coined by the English physicist William Thomson (1824-1907). Such rings have also been observed on another well-known Italian volcano, Stromboli, on the Mediterranean island of the same name. According to experts, they are completely harmless and show no signs of an impending eruption.
Mount Etna is the largest active volcano in Europe. The mountain is about 3350 meters high. However, the exact height changes time and time again due to eruptions and cinder cones.
German volcanologist Boris Behncke – active on social networks such as Etnaboris – wrote: “No volcano on Earth produces as many steam rings as Etna. Now he seems to be breaking all records.” The small canyon opened on Tuesday. Since then, the mountain has produced thousands of rings, said the expert from the National Institute of Geophysics and Volcanology in Catania. So Etna decided to do something simple and beautiful.”
The smoke signals over Etna also attracted many locals and tourists near the mountain. Despite temperatures around 25 degrees, it is still early season in Sicily.
In recent centuries, spectacular eruptions have occurred repeatedly on Etna. According to historical records, more than 20,000 people died there in 1669, which is believed to be the worst catastrophe. About a dozen cities were destroyed at the time.
Source: Krone
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