Etna volcano - eruption update

Aktualisiert: 22. Okt. 2021 16:12 GMT -

Volcanic tremor slowly rising

Update Fri 22 Oct 2021 16:09
Current tremor signal at Etna's ECPN station (image: INGV Catania)
Current tremor signal at Etna's ECPN station (image: INGV Catania)
In tandem with the reported increase of activity in form of strombolian explosions at the SE crater, volcanic tremor has been gradually rising.
Whether this is a first sign the volcano is heading towards another fire-fountaining episode, known as paroxysm, as it did more than 50 times this year alone so far, will be likely seen in the near future (hours to few days from now).

Etna volcano (Italy): resumption of strombolian activity after month

Fr, 22. Okt 2021, 07:14
07:14 AM | VON: MARTIN
Strombolian activity at Etna volcano this morning as seen from Tremestieri (image: Boris Behncke)
Strombolian activity at Etna volcano this morning as seen from Tremestieri (image: Boris Behncke)
Ash emissions at Etna volcano today (image: Boris Behncke)
Ash emissions at Etna volcano today (image: Boris Behncke)
After one month since the latest paroxysm episode, strombolian activity has picked up again at 02:47 local time yesterday.
Small strombolian explosions started to erupt from the Southeast Crater, which became gradually stronger on 21 October at 17:20 local time and are still continuing at the time of this update.
Sporadic ash emissions are accompanied by small glowing steam and gas plumes dispersing towards the E and SW.
The average amplitude of volcanic tremor varies between low-to-medium levels located at altitude between 2900 m and 3000 m.
Source: National Institute of Geophysics and Volcanology volcano activity update 21 October 2021

Volcano remains restless

Update Fri 22 Oct 2021 07:02
False-color satellite image of Etna volcano on 21 Oct 2021, emphasizing thermal anomalies in the summit craters (image: Sentinel Hub)
False-color satellite image of Etna volcano on 21 Oct 2021, emphasizing thermal anomalies in the summit craters (image: Sentinel Hub)
The volcano has remained more or less calm, but it is only a matter of time when activity will pick up again.
The summit craters continue to show marked thermal anomalies at the New SE crater, Voragine and Bocca Nuova complex as well as the NE crater. All of these emit gas and steam plumes and instruments detect frequent small acoustitc signals from dee-seated explosions, likely strombolian in type.
The volcanological institute of the University of Florence (LGS) reported more than 6000 infrasonic (explosion-related) events during 24 hours, with maximum pressures of up to 3.21 Pa. Volcanic tremor remains low, but as often in the past, it can change very quickly.

Etna volcano (Italy): new paroxysm from SE crater sends tall ash plume to 9,000 m altitude

Di, 21. Sep 2021, 08:54
08:54 AM | VON: T
Ash column from Etna's paroxysm this morning (image: Radio touring webcam)
Ash column from Etna's paroxysm this morning (image: Radio touring webcam)
Thermal image of the lava fountain from the south (image: INGV webcam)
Thermal image of the lava fountain from the south (image: INGV webcam)
Current tremor signal (image: INGV Catania)
Current tremor signal (image: INGV Catania)
After little more than 3 weeks of calm, the volcano has again produced a violent lava fountaining episode, known as paroxysm, from its SE crater this morning:
At 4.20 a.m. local time, volcanic tremor suddenly began to rise sharply. At 8.15 a.m., ash emissions were seen from the New SE crater, and strombolian explosions started a7 8.55 a.m., generating an ash plume that quickly rose to 4,500 m altitude.
This activity continued to increase, and by 9.55 a.m. resulted in lava fountaining that generated a tall column reaching approx. 9,000 m height and drifting to the ENE. At the time of this update, the activity is still going on, but seems to be reaching its end as tremor started to descend again.
As during the previous paroxysms, a lava flow is traveling from the southern rim of the crater towards the SW.

Etna volcano (Italy): after 3 weeks of calm, another lava fountaining phase is in the making tonight

So, 29. Aug 2021, 15:49
15:49 PM | VON: T
Strombolian eruption from the New SE crater of Etna (image: LAVE webcam)
Strombolian eruption from the New SE crater of Etna (image: LAVE webcam)
Current tremor signal (image: INGV Catania)
Current tremor signal (image: INGV Catania)
After being mostly calm for about 3 weeks since the violent SE crater paroxysm (or lava fountaining episode) on 9 August this year, the volcano seems to be keen to produce this fiery show of lava fountains once again before the month is over:
Already yesterday, fluctuating tremor heralded some sort of instability in the supply system, although no significant eruptive activity at the craters itself could be noted. Today, the tremor began to rise steeply at 3pm, followed by the resumption of intermittent strombolian activity at the New SE crater.
So far, all looks as if very soon a lava fountaining phase should occur if the volcano follows the pattern of the more than 50 such previous phases during this year. In fact, at the time of finishing this update, the activity already has increased! The next hours will be interesting to follow the volcano live.

Small pyroclastic flow during small landslide on east flank of SE crater

Update Mon 09 Aug 2021 14:26
Small pyroclastic flow from the lower eastern SE crater flank (image: Pippo Scarpinati via Alessandro Corsaro / facebook)
Small pyroclastic flow from the lower eastern SE crater flank (image: Pippo Scarpinati via Alessandro Corsaro / facebook)
At 7.41 am local time, an avalanche of brown ash could be seen originating from a point on the lower east flank of the New SE crater and descending several 100 meters towards the Valle del Bove.
While it looks as if a new vent opened, according to INGV Catania, it was a small landslide from the eastern flank of the SE crater and only involved cold material, without involving a new vent (which would have shown as hot thermal signals).
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