EtnaUpdater @EtnaUpdater@qoto.org

Short update - Mt Etna, Sicily - 14.04.24

On April 7, an explosive ash emission occurred at the summit crater Bocca Nuova. This caused a large area of the southern crater floor to collapse. After this event, the volcanic tremor dropped and continued to decrease and has now reached a low level.
The activity at the new vent of the Southeast Crater, which has been producing pulsating glow (Strombolian activity or emission of hot gas) and many gas rings since April 2, also decreased significantly after the explosion in the Bocca Nuova.
Today there were again isolated ash emissions from Bocca Nuova and from the new vent of the Southeast Crater.

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

#Etna #volcano

This INGV webcam photo taken from the upper south eastern flank of the mountain on the afternoon of April 7, shows the explosve ash emissin from the Bocca Nuova and gas rings from the Southeast Crater:

Short update - Mt Etna, Sicily - 04.04.24

After more than three months of quiet gas emissions, mild Strombolian activity began on Mt Etna on the evening of April 2. The small explosions occurred at a vent on the upper northern flank of the New South East Crater. On the day of April 3rd, many gas rings were produced by the vent. During the night of April 4th, the Strombolian activity was somewhat weaker again. The activity phase was accompanied by an increase in tremor.

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

#Etna #volcano

This INGV webcam photo taken from the eastern flank of the mountain on the evening of April 2, shows the strombolian activity as a small reddish spot:

Short update - Mt Etna, Sicily - 29.12.23

Two isolated explosions occurred at the South East Crater complex last week. A significant enlargement of the north-western pit was observed in Bocca Nuova. The tremor remained at a medium level.

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

#Etna #volcano

This INGV webcam photo shows the explosion at the Southeast Crater Complex, which occurred in the early hours of 23 December from an easterly direction. The eastern flank of the New Southeast Crater is covered with incandescent material and an ash cloud stands above the cone. The scene is almost outshone by the bright light of the setting moon:

Short update - Mt Etna, Sicily - 22.12.23

During the last week, the unrest at Mt. Etna increased again, as there were isolated explosions at both Bocca Nuova and the South East Crater complex. However, the seismic activity decreased and the tremor remained unchanged.

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

#Etna #volcano

This INGV webcam photo shows an explosive emission of gas and brownish ash from Bocca Nuova summit crater:

Short update - Mt Etna, Sicily - 08.12.23

Following the paroxysm at the South Eeast Crater complex, only the usual gas emissions occurred at Mt Etna last week. The tremor remained 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

On 1 December, a new paroxysm occurred at the South East Crater complex of Mount Etna. This began in the late afternoon with an intensification of the stromoblian activity that had been ongoing for around 14 days. This soon turned into the emission of lava fountains up to 400 metres high. The eruption column was driven in a north-easterly direction and caused ash rain down as far as the coast in the Giardini/Naxos area. Lava flows poured through the southern breach of the cone to the west/south-west and through the eastern breach in the direction of Valle del Bove. The explosive activity ceased in the late evening, but lava was still produced for a few hours.

#Etna #volcano

This INGV webcam photo shows the paroxysm at the South East Crater from south eastern direction:

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).

#Etna #volcano

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).

#Etna #volcano

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.

#Etna #volcano

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.
#Etna #volcano

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

#Etna #volcano