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Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #volcanic activity
Sheveluch - the growth of the dome continues - photo Y.Demyanchuk / IVS FEB RAS, KVERT / 10.11.2021

Sheveluch - the growth of the dome continues - photo Y.Demyanchuk / IVS FEB RAS, KVERT / 10.11.2021

In Sheveluch, the KVERT reports that the growth of the dome is continuing, accompanied by incandescence, boulder avalanches, and strong fumarole activity on November 10.

A thermal anomaly is detected by the satellites.

The aviation code remains orange.

 

Sources : KVERT & Mirova

Sheveluch - Sentinel-2 & Modis thermal volcanic activity at 11.10.2021 / 00h31 - Doc. Mirova

Sheveluch - Sentinel-2 & Modis thermal volcanic activity at 11.10.2021 / 00h31 - Doc. Mirova

During the week of November 1 to 7, the temperatures recorded on the edge of the crater of La Fossa on Vulcano show slight growth, and stability on the inner flank.

The flow of CO2 remains continuous and high at the base of the La Fossa cone and in the area of ​​Vulcano Porto.

Access to the Vulcano / La Fossa crater is prohibited, due to the danger of fumaroles and gas concentrations. The carabinieri surprised and strongly verbalized a dozen offenders.

 

Source: Weekly bulletin November 1 to 7, 2021 (issue date: November 9)

Vulcano - 11.11.2021 - fumaroles at La Fossa and thermal anomalies in the crater - doc. INGV webcams - one click to enlargeVulcano - 11.11.2021 - fumaroles at La Fossa and thermal anomalies in the crater - doc. INGV webcams - one click to enlarge

Vulcano - 11.11.2021 - fumaroles at La Fossa and thermal anomalies in the crater - doc. INGV webcams - one click to enlarge

From 8:40 a.m. on November 10 in the morning, what appears to be a new intrusion of deep magmatic material was recorded in La Palma, this activity begins with a seismic train or spasmodic tremor, which lasts about 45 minutes, followed by numerous earthquakes located between 30 and 40 km. This may be due to a reactivation of the deeper reservoir and which could have repercussions on larger inputs of magma to the intermediate reservoir, this would be confirmed if in the coming hours or days the activity of the volcano intensifies, with a more high Strombolian activity, greater release of gas and ash, and increased expulsion of lava.

The Cumbre Vieja lava flows remain stable and their fronts do not undergo movement, except for the flows that reached the sea at Playa de Los Guirres, starting a new lava delta, which merges with the previous one.

The affected area reaches 998.34 ha and maintains a maximum width between flows of 3,100 meters.

As for air quality, there has been an improvement in the five municipalities in the west of La Palma, where yesterday the daily threshold for fine particles was not exceeded in any station on the island. Regarding sulfur dioxide emissions, the values ​​remain low in general, at good or reasonably good levels, with a specific time of regular air quality in Puntagorda. . Regarding seismicity, it shows an increase, during the last hours, at depths greater than 20 km. ; there is an earthquake of 4.9 mblg.

 

Sources: InVolcan, IGN, DSN, Copernicus, RTVC.

La Palma / Cumbre Vieja - fusion of the new lava delta with the first one - 10.11.201 - photo I love the world

La Palma / Cumbre Vieja - fusion of the new lava delta with the first one - 10.11.201 - photo I love the world

Impressive drone footage showed cascades of red-hot lava tumbling into the Atlantic Ocean off Spain's La Palma on Wednesday - vidéo Global News

La Palma / Cumbre Vieja - several vents active simultaneously and ejection of large bombs - photo TR Walter 11.11.2021

La Palma / Cumbre Vieja - several vents active simultaneously and ejection of large bombs - photo TR Walter 11.11.2021

La Palma - seismicity on 11.10.2021 / IGN and earthquake location on 11.11.2021 / IGN - one click to enlargeLa Palma - seismicity on 11.10.2021 / IGN and earthquake location on 11.11.2021 / IGN - one click to enlarge

La Palma - seismicity on 11.10.2021 / IGN and earthquake location on 11.11.2021 / IGN - one click to enlarge

The observatory of the Fuego volcano, OVFGO, reports a weak gray fumarole at a height of 4,400 m above sea level (14,436 feet) which disperses in the west direction of the volcano.

From 6 to 12 explosions per hour are reported, with weak and moderate characteristics that expel. column of ash at a height of 4,400 to 4,800 m above sea level (14,436 feet to 15,748 feet) which is scattered in the west, northeast and north directions of the volcano, weak and moderate rumblings are reported, which cause vibrations in the roofs and windows in the houses near the volcano. Weak, moderate and strong avalanches are observed in the contour of the crater and in the direction of the ravines: Ceniza, Trinidad, Taniluyá, Santa Teresa and Las Lajas, part of the material reaching the edge of the vegetation. A sound similar to that of a locomotive lasting 1 to 2 minutes is reported.

Ash falls are reported to the OVFGO, the Acatenango volcano, Yepocapa and with the probability of ash fall in the communities located north of the Fuego volcano.

 

Source: INSIVUMEH

Fuego - image Sentinel-2 bands 12,11,5 of 10.11.2021 - Doc. Insivumeh

Fuego - image Sentinel-2 bands 12,11,5 of 10.11.2021 - Doc. Insivumeh

Fuego - Sentinel-2 bands 12,11,8A & Modis thermal volcanic activity at 11.10.2021 / 4:39 p.m. - Doc. Mirova

Fuego - Sentinel-2 bands 12,11,8A & Modis thermal volcanic activity at 11.10.2021 / 4:39 p.m. - Doc. Mirova

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