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Volcan Etna (Italie), mise à jour d'activité: nouvelle activité explosive au SE, l'effondrement sur le flanc de la SE cône, nouvelle fracture éruptive SE de SE cratère près du Belvédère

jeu., 1 janv. 1970, 00:00
00:00 AM | AUTEUR : TOM PFEIFFER

After its explosive phases on 9 Nov and 10-11 Nov, Etna had been relatively quiet over the past days. This changed again dramatically today (16 Nov):


A new explosive and effusive phase started at around 6 am local time, when tremor level rose and SE crater started strombolian activity quickly changing from weak to strong intensity.
From around 9:20 am, an dense ash plumes were again observed from SE crater drifting to the ENE at around 4000 m a.s.l. As it turned out, they were caused by large collapses on the S-SE flank of the cone, causing small debris flows covering the aera E-SE at the base of the cone.
In th area of collapse, near Belvedere, a new effusive vent also had opened. Its flows have cut the paths leading to the 2800 m vent The new flow is directed into Valle del Bove.
A small new lava flow emerged from the 3050 vent, which had last been active during the previous two episodes from 9-11 Nov.
At 9:45 local time, the 3050 m vents in the lower flank of Bocca Nuova became active again as well and a new lava flow started from here, overlapping those already cooling from the previous episodes. At the beginning, this activity was again accompanied by spattering from the vent(s).
The 2800 m vent (seemingly independant from all other activities) continues to emit a more or less stable lava flow that continues inside its tube until about 2400 m elevation in the upper Valle del Bove near the Monti Centinari.


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Source: INVG Catania

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