Etna volcano (Italy): continuing ash emissions

Mon, 18 Feb 2019, 10:57
10:57 AM | BY: T
Etna erupting ash from NE crater as seen last evening from Lipari (!) during extremely clear weather (image: Emanuela Carone / VolcanoDiscovery Italia)
Etna erupting ash from NE crater as seen last evening from Lipari (!) during extremely clear weather (image: Emanuela Carone / VolcanoDiscovery Italia)
For more than a month, sometimes intense ash emissions have been taking place from the NE crater and, to lesser extent, from Bocca Nuova.
These ashes are currently believed not to be formed by fresh magma rising in the conduits, but instead are composed of older material that is now being vented from the inner conduits. It can be interpreted as the surface expression of internal re-adjustments that followed the brief, but intense eruption at Christmas last year, which drained (some of the) magma from the conduits and reservoirs.
Another factor are likely the seismic events around the volcano in the days and weeks after, which also might have caused internal shifts in magma storage.

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