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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
Popocatépetl - 01.01.2021 / 03h15 & seismogram - Doc. webcams from Mexico and Cenapred
Popocatépetl - 01.01.2021 / 03h15 & seismogram - Doc. webcams from Mexico and Cenapred

Popocatépetl - 01.01.2021 / 03h15 & seismogram - Doc. webcams from Mexico and Cenapred

At Popocatépetl, 106 exhalations and 980 minutes of tremor were identified, accompanied by emissions of volcanic gases and ash, with a plume reaching a maximum height of 600 m., Dispersed mainly towards the northeast.

In addition, an explosion was recorded today at 3:14 am accompanied by the expulsion of some incandescent fragments a short distance from the crater.

In the early morning and until 5 p.m., emissions of volcanic gases and ash are observed, which disperse in a northeast direction.

The thermal anomalies of 01.01.2021 are of VRP 16 and 13 MW

The Popocatépetl volcanic alert semaphore is amarillo Fase 2

 

Sources: Cenapred and webcams of Mexico

Popocatépetl - gas and ash emission on 01.01.2021 / 08:13 - Doc. webcamsdeMexico

Popocatépetl - gas and ash emission on 01.01.2021 / 08:13 - Doc. webcamsdeMexico

At Karymsky, an explosive activity, present in recent days, has left traces of ash from the volcano to the lake of the same name.

The KVERT reports, for this January 1, 2021, an explosive activity, accompanied by a plume of gas and ash at 4,500-5,000 meters asl., drifting NW for 70 km.

Karymsky - ash around the volcano, and between the volcano and the lake - Sentinel image -2 bands 8,4,3 from 11/30/2020 - Doc. Copernicus

Karymsky - ash around the volcano, and between the volcano and the lake - Sentinel image -2 bands 8,4,3 from 11/30/2020 - Doc. Copernicus

Karymsky - thermal anomaly at 01.01.2021 / 11.55 a.m. - Doc. Mirova_MODIS_VRP

Karymsky - thermal anomaly at 01.01.2021 / 11.55 a.m. - Doc. Mirova_MODIS_VRP

At Klyuchevskoy, the ash explosions generated a plume of gas and ash which reached a height of 6,000 meters asl on January 2, 2021, drifting 50 km to the south-east.

The aviation code remains orange.

 

Sources: KVERT, Mirova and VAAC Tokyo

Klyuchevskoy - backlit photo on 02.01.2021 / 3 p.m. loc. - photo Andrew Matseevsky via Olga Girina

Klyuchevskoy - backlit photo on 02.01.2021 / 3 p.m. loc. - photo Andrew Matseevsky via Olga Girina

Two aerial reconnaissance were carried out on 31.12.2020 at the Soufrière of St-Vincent: a strong cloud cover prevented a good view of the crater during the first reconnaissance; The second aerial reconnaissance was carried out around 4:00 p.m. and the photographer was able to capture photos of the crater, which shows the effusive eruption is continuing and the new dome is also continuing to increase in size.

Soufrière de Saint-Vincent - the new dome on 12.31.2020 / 4 p.m. - Doc. UWI / NEMO

Soufrière de Saint-Vincent - the new dome on 12.31.2020 / 4 p.m. - Doc. UWI / NEMO

The alert level remains at Orange. People living in areas near the volcano, which include communities of Fancy in Georgetown and Belle Isle in Richmond, are urged to remain vigilant and listen to any advice from the National Emergency Management Organization (NEMO).

The National Emergency Management Organization reminds the public that no evacuation order or evacuation notice has been given

NEMO is also calling on the public to forgo visiting the La Soufrière volcano until scientists make it known it is safe to do so.

 

Source: UWI Seismic Research Center

Kilauea 12/30/2020- Annotated eruption photograph taken at 5 p.m. HST on December 30, 2020, from the southern edge of Halemaʻumaʻu, summit of the Kīlauea volcano. - USGS photo by K. Lynn.

Kilauea 12/30/2020- Annotated eruption photograph taken at 5 p.m. HST on December 30, 2020, from the southern edge of Halemaʻumaʻu, summit of the Kīlauea volcano. - USGS photo by K. Lynn.

In Kilauea, the western vents of Halema'uma'u crater show spatttering, and feed a lava flow through lava tunnels towards the lake; It continues to widen slowly, its depth reached 186 meters in the afternoon of December 31.

Sulfur dioxide emission ratios remain high, with 4,500-5,000 tonnes per day.

The seismicity remains high, but stable, marked by a high tremor and some earthquakes.

Kilauea - Halema'uma'u crater - the vent active on 12.31.2020 in the morning - USGS photo by B. Carr

Kilauea - Halema'uma'u crater - the vent active on 12.31.2020 in the morning - USGS photo by B. Carr

Kilauea - Halema'uma'u crater - evolution of the lava lake - Doc. USGS

Kilauea - Halema'uma'u crater - evolution of the lava lake - Doc. USGS

The main island of colder, solidified lava floating in the lava lake moved faster westward, as if searching for the western lava source filling the lake, while the other 10 small islands remained relatively stationary. . around the east end of the lake. The main island measured about 250 m. in length, 135 m. wide and about 3 ha. area according to the heat map of December 30. The measurements on Wednesday evening (December 30) show that the surface of the island was about 6-8 m. above the surface of the lake.

 

Source: HVO-USGS

Kilauea - Halema'uma'u crater on  01.01.2021 / 06h30 HST - photo USGS

Kilauea - Halema'uma'u crater on 01.01.2021 / 06h30 HST - photo USGS

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