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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

The National Institute of Geophysics and Volcanology, Etneo Observatory, announces that from approximately 4:50 p.m. UTC on January 16, 2022 (a little out of step due to the eruption of Tonga and La Fournaise), the images of the cameras of CCTV footage from Stromboli showed increased explosive spatter activity in the North Crater area.

Although the visibility is reduced due to the cloud cover, a continuous accumulation of pyroclastic materials is observed in the upper part of the Sciara del Fuoco which produces an intense rolling of large incandescent blocks to the coast.
In addition, from 6:30 p.m. UTC, a small flow of rheomorphic lava is observed, which remains confined to the upper part of the Sciara del Fuoco, from the front of which large incandescent blocks are detached.

Stromboli - explosion and rheomorphic flow in the sciara del Fuoco on 16.01.2022 / 7 p.m. - SCV webcam - INGV

Stromboli - explosion and rheomorphic flow in the sciara del Fuoco on 16.01.2022 / 7 p.m. - SCV webcam - INGV

Stromboli - The crater terrace seen by the thermal camera placed on Pizzo above the Fossa with the delimitation of the crater zones Center-South Zone and North Zone (AREA N, AREA C-S respectively) - Doc. INGV OE

Stromboli - The crater terrace seen by the thermal camera placed on Pizzo above the Fossa with the delimitation of the crater zones Center-South Zone and North Zone (AREA N, AREA C-S respectively) - Doc. INGV OE

From the seismic point of view, from 4:40 p.m. UTC, a moderate increase in the average amplitude of the volcanic tremor was observed, in the range of medium-low values. There are no significant changes in the occurrence rate and extent of blast earthquakes.
Further updates will be communicated promptly and in any case within 3 hours of this press release.

The National Institute of Geophysics and Volcanology, Etneo Observatory, announces that on the monitoring networks recorded at 23:25 (22:25 UTC), the parameters return to normal activity.
The frequency of the explosions has returned to ordinary values ​​and the rolling of the incandescent material along the Sciara del Fuoco has ceased.
The average amplitude of the volcanic tremor has undergone a decrease, remaining however in the range of medium-low values. There are no significant changes in the occurrence rate and extent of blast earthquakes.

Further updates will be communicated soon.

 

Source: INGV OE

Erta Ale - image Sentinel-2 bands 12,11,4 dated 08.11.2021 - one click to enlarge

Erta Ale - image Sentinel-2 bands 12,11,4 dated 08.11.2021 - one click to enlarge

Erta Ale - image Sentinel-2 bands 12,11,4 dated 24.11.2021 - North lava lake - one click to enlarge

Erta Ale - image Sentinel-2 bands 12,11,4 dated 24.11.2021 - North lava lake - one click to enlarge

Erta Ale - Sentinel-2 bands 12,11,4 image from 14.12.2021 - 2 lava lakes are present - click to enlarge

Erta Ale - Sentinel-2 bands 12,11,4 image from 14.12.2021 - 2 lava lakes are present - click to enlarge

As seen in recent Sentinel satellite images, a beautiful lava lake is once again visible in the southern pit crater of Erta Ale Volcano in Ethiopia.

Until now, no one had been able to go there to confirm this fact. Arrived at the edge of the caldera on December 31, 2021, Seifegebreil Shifferaw and his companions were able to see that the lava lake present for several weeks is very active.

The lake is about 200 meters in diameter and the lava level is about 30 meters below the rim of the crater. Part of the lava lake to the northeast is covered by a cooled lava overhang that you can see in these shots. The lava is very fluid, brewed by the escape of volcanic gases, suddenly it stirs and bubbles of lava burst the surface of the lake. After five years of sporadic activity, it seems that Erta Ale has entered a new, very active phase.

Sentinel satellite images also revealed the ephemeral presence of a lava lake in the North Pit Crater on November 24 and December 14, 2021.

 

Source:

- Sentinel-2

- Shots taken by Seifegebreil Shifferaw during a reconnaissance trip to the Erta Ale volcano in December 2021, transmitted by Tanguy de Saint-Cyr / Aventure et Volcans.

Erta Ale - progress of the Ethiopian group - photo Seifegebreil Shifferaw 03.01.2022 / FB

Erta Ale - progress of the Ethiopian group - photo Seifegebreil Shifferaw 03.01.2022 / FB

Reconnaissance trip to the Erta Ale volcano 31.12.2021 - video Adventure and volcanoes / https://www.youtube.com/watch?v=bVNBpgCtQ_4

Erta Ale - Doc Mirova at 13.01.2022 / 07:56 - Sentinel-2 bands 12,11,8A and Modis thermal volcanic activity

Erta Ale - Doc Mirova at 13.01.2022 / 07:56 - Sentinel-2 bands 12,11,8A and Modis thermal volcanic activity

The I.G.Peru informs us of an activity which remains moderate in Sabancaya in the week of January 10 to 16, 2022.

It is characterized by an average of 41 daily explosions, accompanied by plumes of gas and ash reaching a height of more than 2,000 meters above the summit.

During this period, 290 earthquakes of volcanic origin and associated o the circulation of internal magmatic fluids were detected. VT earthquakes, related to rock fracturing, occurred mainly northwest and southwest of the volcano, with a magnitude of up to 3.7.

Four thermal anomalies were identified by Mirova, with a max. of VRP 4 MW, associated with the presence of a superficial lava body in the crater.

The other parameters do not show any significant anomalies

 

The volcanic alert remains at naranja, with a non-accessible zone of 12 km radius around the crater.

 

Source: I.G.Peru

Sabancaya - I.G.Peru bulletin from 10 to 16.01.2022

Sabancaya - I.G.Peru bulletin from 10 to 16.01.2022

A moderate eruptive activity of the Karymsky volcano in Kamchatka continues. Satellite data from KVERT showed explosions sending ash up to 5.5-6 km above sea level, with ash clouds moving 25 km to the west of the volcano.

Moderate eruptive activity of the volcano continues. Ash explosions up to 10 km (32,800 ft) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

The Karymsky has been in the eruptive phase since April 1, 2020. The GVP assigns a VEI of 3 to this current eruption.

The aviation code is orange.

 

Sources: KVERT & Global Volcanism Program

Karymsky - image archive / sat _ali_03.05.2012

Karymsky - image archive / sat _ali_03.05.2012

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