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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, #Sismologia
 Bezymianny - 21.10.2020 / 20h29 - Doc. KB GS RAS via Olga Girina

 Bezymianny - 21.10.2020 / 20h29 - Doc. KB GS RAS via Olga Girina

An explosive eruption of the Bezymyanny volcano occurred on October 21, 2020 at 20:22 UTC. The ash cloud is located above the Klyuchevskaya group of volcanoes. First reported at an altitude of 8,500 meters, the height of the ash cloud rose to 5,500 meters later.

The VAAC Tokyo has issued an ash dispersion advisory 4 times, as they cross various air routes during their dispersion.

A red aviation code was issued, before changing to orange.

Sources: VAAC Tokyo, KVERT & Olga Girina

Bezymianny - Thermal anomalies at 10/22/2020 / 02:25 am - Doc. Mirova MODIS
Bezymianny - Thermal anomalies at 10/22/2020 / 02:25 am - Doc. Mirova MODIS

Bezymianny - Thermal anomalies at 10/22/2020 / 02:25 am - Doc. Mirova MODIS

October 21, 2020, ~ Eruption ~ Bezymianny Volcano, Russia / Volcano Time lapse

Two other volcanoes are active in the Kamchatka Peninsula: Klyuchevskoy and Karymsky.

 

At Klyuchevskoy, the explosive-effusive eruption continues at a moderate level.

The almost continuous explosions produce plumes of gas and steam, containing a little ash, at an altitude of about 5,200 meters, drifting north-east.

The lava flow in Apakhonchich falls remains active.

The thermal anomalies noted by Mirova were of max. VRP 778 MW on October 20, 457MW on October 21, and Between VRP 652 and 425 MW on October 22, 2020.

Klyuchevskoy - Thermal anomalies at 22.10.2020 / 02:25 - Doc. Mirova Modis
Klyuchevskoy - Thermal anomalies at 22.10.2020 / 02:25 - Doc. Mirova Modis

Klyuchevskoy - Thermal anomalies at 22.10.2020 / 02:25 - Doc. Mirova Modis

At the Karymsky, according to data from pilots, explosions sent ash up to 4,000 m. altitude, around 02:30 UTC on October 21. The ash plume continues to drift south-east of the volcano for 40 km. The last Karymsky explosions were noted on July 29, 2020.

Moderate eruptive activity of the volcano continues. Ash explosions up to 19,700-23,000 feet (6-7 km) above sea level could occur at any time. Ongoing activities could affect low-flying planes.

The aviation code has changed to orange.

 

Sources: KVERT & VAAC Tokyo

Karymsky - photo A.Belousov via Volkstat / 21.10.2020

Karymsky - photo A.Belousov via Volkstat / 21.10.2020

Karymsky- volcanic ash advisory on 21.10.2020 / 0600Z  - Doc. VAAC Tokyo

Karymsky- volcanic ash advisory on 21.10.2020 / 0600Z - Doc. VAAC Tokyo

On October 20 at 13:43, an earthquake of M5.6 occurred in Núplahlíðarháls on the Reykjanes peninsula.

More than 2,000 aftershocks have been detected in the ongoing swarm. About 30 aftershocks measured more than M3.0 and some were felt in the Reykjanes Peninsula, the capital region and Borgarfjördur.

Travelers and hikers are advised to use caution near the steep slopes in Reykjanes due to the increased likelihood of rockfall as the seismic swarm continues.

Source: IMO

Reykjanes peninsula - seismic swarm at 10/22/2020 / 07:15 am - Doc. IMO
Reykjanes peninsula - seismic swarm at 10/22/2020 / 07:15 am - Doc. IMO

Reykjanes peninsula - seismic swarm at 10/22/2020 / 07:15 am - Doc. IMO

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