EtnaUpdater @EtnaUpdater@qoto.org

Short update - Mt Etna, Sicily

During the past week, moderate Strombolian explosions occurred at times at the South East Crater complex. The tremor was subject to strong fluctuations and reached high levels several times.
This evening there was sustained Strombolian activity. The explosions were often strong enough to eject incandescent material onto the upper flanks of the cone. It is possible that this activity will escalate into a paroxysm.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

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This INGV webcam photo shows the Strombolian activity at the South East Crater from eastern direction:

Short update - Mt Etna, Sicily

Following the paroxysm of the South East Crater, there was another one-day phase of Strombolian activity. Since then, there was only calm release of gas . The tremor has stabilised at a medium level.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

Short update - Mt Etna, Sicily

After a long build-up phase, the expected paroxysm occurred today at the South East Crater complex of Mount Etna. Lava fountains were released and a lava flow was emitted in a southerly direction. Ash rain fell on the villages on the east/south-east flank of the mountain.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

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This webcam photo was taken during the peak of the paroxysmal episode by INGV. It was taken from the eastern flank and shows the strong glow within the cloud cap that unfortunately covered the summit area during the eruption. Above you can see the eruption column of gas and ash, which is being bent by the wind in an easterly direction:

Short update - Mt Etna, Sicily

During last week, the mild strombolian activity at Etna's Southeast Crater complex continued. The tremor remained unchanged and the seismic activity was only slightly increased.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

Short update - Mt Etna, Sicily

For several days, there has been ongoing strombolian activity at Etna's Southeast Crater complex. Meanwhile, Bocca Nuova emitted pulse-like hot gas and produced many gas rings.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

This webcam photo taken last night from the eastern flank of Mt. Etna shows one of the mild strombolian explosions in the Southeast Crater complex. The incandescent material is ejected several tens of metres higher than the crater rim:

Short update - Mt Etna, Sicily

Mild strombolian activity has resumed at Mt Etna. Since the early morning hours of 22 October, very sporadic and mild strombolian explosions have been occurring at Etna's Southeast Crater. The explosions take place in the area between the old and new cones of the Southeast Crater complex and usually also release some brownish ash.

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This photo of the La Montagnola - webcam (I.N.G.V.) from the evening of 23.10.2023 shows a mild strombolian explosion inside the Southeast Crater:

Short update - Mt Etna, Sicily

During the last week, Mt Etna remained somewhat unsettled. The energetic emissions of hot gas in Bocca Nuova continued and a swarm quake occurred on the northern flank.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

Short update - Mt Etna, Sicily

The mountain remained unsettled last week as well. There were individual ash releases from the southeast crater complex. The tremor increased somewhat and the seismograms showed occasional explosion signals.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

Short update - Mt Etna, Sicily

During the past week, Etna's restless sleep continued. There was pulse-like emission of hot gas, as well as production of gas rings from Bocca Nuova. Seismic activity has increased somewhat and slight inflation of the volcanic edifice has been observed.

You can find more information on my website https://www.vulkan-etna-update.de (German language).

#Etna #volcano

Quick Etna Update, 09.07.23

Today, minor ash emissions have started at Mt Etna's South East Crater complex. The source is apparently a vent located in the northeast summit area of New Southeast Crater. The grey ash clouds are accompanied by increased gas emission. In the evening, images from the INGV thermal imaging cameras also showed small thermal anomalies, suggesting the ejection of hot material. The tremor shows no particular abnormalities.
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Etna update, 07.07.2023

Last week, strong gas emission continued to occur at Bocca Nuova. Occasionally, pulse-like gas releases were also visible. Today, around 19:26, a relatively strong pulse-like gas emission occurred, which was associated with a seismic signal. At the Southeast Crater complex, most of the gas was emitted from a vent in the northeast summit area of New Southeast Crater. Here, gas emissions were persistent and appeared more powerful than in previous weeks. Occasionally, gas was also emitted in pulses. From the central area between the old and the new South East Crater, gas was persistently emitted from fumaroles extending along the inner crater walls. Fractures on the upper north flank of New Southeast Crater also persistently released some gas and white steam.
I did not observe any gas emissions at Voragine and Northeast Crater.

The evaluation of the data from the GPS stations showed no significant changes for the period between 26.06. and 02.07. However, the data showed the continuation of the slight inflation phase of the volcanic edifice [1].
The signals from the clinometric stations showed no significant changes for the period between 26.06 and 02.07 [1].

After a slight increase in the number of infrasound events from 26 June, the infrasound activity at the summit craters slowly decreased again until 02 July. However, strong winds also affected the measurements during this time. The amplitude of the events was low. In most cases, Bocca Nuova could be identified as the source, although some events also occurred at Southeast Crater [1].

Sulphur dioxide emissions at the summit craters remained at a medium level in the week from 26.06. to 02.07..
During the same period, ground carbon dioxide emissions (ETNAGAS station) decreased significantly, but remained just at a medium level [1].

Last week, the online seismograms of station ECNE showed weak noise, as well as repeated various weak signals, some of which resembled explosion signals. These signals occurred about every 5 - 15 minutes. Today, two short sequences (2 - 3 min.) of stronger noise were recorded. The second event was associated with stronger gas emission from Bocca Nuova.
The tremor was at a medium level during the past week, with a slightly increasing trend [2].
In the period from 26 June to 02 July, the source of the tremor was below the southeast crater at a depth between 2400 - and 2900 m [1].

On 05.07. a series of earthquakes occurred in the area a few kilometres west of Bronte (west flank). The strongest quake had a magnitude of 4.0. The quakes occurred at a depth of between 9 and 30 km [3].

1. INGV-Sezione di Catania. 2023. Etna - Bollettino settimanale, 26/06/2023 - 02/07/2023
2. INGV-Sezione di Catania. 2023. Home. TREMORE VULCANICO. ECNE
3. INGV. Osservatorio Etneo. Sorveglianza e Monitoraggio. DATABASE TERREMOTI. Localizzazioni di sala operativa. 2023

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