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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
La Palma / Cumbre Vieja - the ash plume from Roque de Los Muchachos on 11.15.2021 / 8.30am - Doc. EELabs.eu - one click to enlarge

La Palma / Cumbre Vieja - the ash plume from Roque de Los Muchachos on 11.15.2021 / 8.30am - Doc. EELabs.eu - one click to enlarge

La Palma / Cumbre Vieja - the eruptive plume seen from the Dos Pinos dam (Los Llanos) on 11.15.2021 / 9.30 a.m. loc.- Doc. InVolcan - one click to correct

La Palma / Cumbre Vieja - the eruptive plume seen from the Dos Pinos dam (Los Llanos) on 11.15.2021 / 9.30 a.m. loc.- Doc. InVolcan - one click to correct

The information disseminated by the PEVOLCA management indicates that the eruptive process of Cumbre Vieja continues, with the advance of the lava above the existing flows, widening the deltas with the arrival of the lava which was on the beach of Charcón to the sea. The lava deltas have practically merged and reach 40.90 hectares. So we have three lava entries into the sea, the last on El Charcón beach on the morning of November 15.

The height of the eruptive plume reached 3,100 meters on the morning of November 15, 2021. The plume was heading west, with no consequences for the airports.

Involcan says there has been a sharp increase in explosive activity from Cumbre Vieja since noon today.

The conditions were met for the creation of "tolvanera / remolino de polvo", known as "dust devils", small dust tornadoes.

La Palma / Cumbre Vieja - dust devil on 15.11.2021 - Doc. Fernando Bullon / AEMET_Canarias

La Palma / Cumbre Vieja - dust devil on 15.11.2021 - Doc. Fernando Bullon / AEMET_Canarias

La Palma - general state of the lava flows on 15.11.2021 - Doc. IGME

Regarding seismicity, the slightly downward trend is maintained in the intermediate, while in depth there are no appreciable changes, neither in number nor in magnitude.

The area affected by the volcanic eruption is 1,019.79 hectares, with a maximum width between flows of 3,100 meters.

La Palma - seismicity at 16.11.2021 / 07h17 - Doc. IGN

La Palma - seismicity at 16.11.2021 / 07h17 - Doc. IGN

2021.11.15  07h08 UTC LaPalma - lava flows of Cumbre Vieja and entries in the sea at 11.15.2021 / 07h08UTC- Doc. Copernicus EMSR

2021.11.15 07h08 UTC LaPalma - lava flows of Cumbre Vieja and entries in the sea at 11.15.2021 / 07h08UTC- Doc. Copernicus EMSR

La Palma - underwater photos in the area of ​​the lava delta taken during the 1st week of October - IEO / Instituto Espanol de Oceano

La Palma - underwater photos in the area of ​​the lava delta taken during the 1st week of October - IEO / Instituto Espanol de Oceano

Regarding air quality, although yesterday sulfur dioxide levels remained reasonably good and consistent in Puntagorda and PM10 particles at good levels in all resorts on the island except Los Llanos of Aridane, the values ​​they increased at night and currently unfavorable levels are recorded. For this reason, it was decided to suspend the face-to-face teaching activity in neighboring municipalities, where recommendations to reduce outdoor activities continue.

Sources: IGN, IGME, DSN, Pevolca, Copernicus, IEO

Sabancaya - activity on 14.11.2021 - Doc. I.G. Peru

Sabancaya - activity on 14.11.2021 - Doc. I.G. Peru

Between November 8 and 14, the eruptive activity of Sabancaya remained at moderate levels, with an average of 67 daily explosions, accompanied by plumes of gas and ash reaching 2,500 m. above the summit.

During this period, I.G. Peru detected and analyzed 645 earthquakes of volcanic origin associated with the circulation of internal magmatic fluids. The VT earthquakes linked to the fracturing of rocks remain mainly located north of the volcano, with magnitudes between 2.3 and 3.4.

No significant deformation. Six thermal anomalies, with a max. of 20 MW, are observed in relation to the presence of a surface lava body in the crater.

The volcanic alert remains in Naranja, with an inaccessible area of ​​12 km in radius.

 

Source: I.G. Peru

Sangay - photo archives IGEPN / 05.31.2021

Sangay - photo archives IGEPN / 05.31.2021

VAAC Washington reported 2 ash emissions at Sangay, with elevations up to 870 meters above crater level and heading west. In addition, in the morning of today, IGEPN surveillance cameras observed low ash vapor emissions which reached a maximum height of 2000 m. asl. and heading west.

In the event of heavy rains, these could re-mobilize the accumulated materials, generating mudslides and debris that would descend the sides of the volcano and flow into the adjacent rivers.

Satellite monitoring through the FIRMS tool, 10 thermal anomalies are recorded and while with MIROVA, it records 1 high thermal anomaly, of VRP 226 MW, and 1 moderate thermal anomaly, of VRP 12 MW, during the last 24 hours located in the upper part of the volcano.

Seismicity is characterized by 195 explosion earthquakes, 25 LP earthquakes, and 10 emission tremor episodes. (at 15.11 at 11am)

For the moment the area remains completely cloudy

 

Sources: IGEPN & VAAC Washington

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