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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

In the Reykjanes peninsula, the eruption of Fagradalsfjall continues with the same rhythmic behavior, under very changeable and wintry weather conditions yesterday 14 May.

Geldingadalur vent # 5 - 14.05.2021 / 07h20 - webcam_langihryggur N - one click to enlarge all photos

Geldingadalur vent # 5 - 14.05.2021 / 07h20 - webcam_langihryggur N - one click to enlarge all photos

Geldingadalur vent # 5 - 14.05.2021 / 11:40 am - webcam_langihryggur N

Geldingadalur vent # 5 - 14.05.2021 / 11:40 am - webcam_langihryggur N

Evolution of the eruption - video Bjorn David Thorsteinsson - https://youtu.be/uA_hWqFUP1U

Authorities in Grindavik are concerned about the possible lava spill in the Nátthagi Valley, and the impact of its southerly advance and the road and infrastructure (including fiber optic cables) between Grindavik and Þorlákshöfn.

Fagradalsfjall eruption - possibilities of lava flow vs. need for work at the Nattagha pass - Doc. Vigfús Eyjólfsson / 05/14.2021

Fagradalsfjall eruption - possibilities of lava flow vs. need for work at the Nattagha pass - Doc. Vigfús Eyjólfsson / 05/14.2021

Nameless valley - 05.14.2021 / 10:39 a.m. - while the lava fountains follow each other rhythmically, the first civil engineering machines begin work (far left of the lava field) work - webcam langihryggur

Nameless valley - 05.14.2021 / 10:39 a.m. - while the lava fountains follow each other rhythmically, the first civil engineering machines begin work (far left of the lava field) work - webcam langihryggur

On the morning of May 14, work began to erect a lava barrier. The construction of defense structures above Nátthaga is carried out in collaboration with the police chief of Suðurnes, the civil defense of Grindavík and the city of Grindavík.
While it is possible to guarantee that the continuation of the lava flow towards Merardalur, no infrastructure is endangered in the near future. Merardalir can receive a considerable amount of lava and if it fills up another uninhabited area without significant infrastructure will take over from the lava.

The work should last 3 to 4 days, carried out with the materials on site and would be reversible after eruption.

 

Source: Almannavarnir, Óróapúls

Nameless valley - 14.05.2021- construction work on a dam against lava flows - Photo by Civil Defense / Almannavarnir.

Nameless valley - 14.05.2021- construction work on a dam against lava flows - Photo by Civil Defense / Almannavarnir.

Insivumeh reports a white degassing plume at the Mackenney crater of Pacaya, and an ash column at 3,100 m. asl. this Friday May 14.

The crack that feeds the lava flow on the northwest flank degasses and presents some explosions with incandescent projections at a height of 40 m. The flow progresses and we observe the accumulation of incandescent material around las Cachajinas. Tremor is still recorded.

During the morning, explosions were reported and it is likely that in neighboring communities ash fall occurs.

 

Sources: Insivumeh & Conred

Pacaya - 13.05.2021 - examination of the lava flow during a field visit / image by drone - Doc. Conred / Gobierno de Guatemala

Pacaya - 13.05.2021 - examination of the lava flow during a field visit / image by drone - Doc. Conred / Gobierno de Guatemala

Pacaya - activity of 14.05.2021 - photo Conred

Pacaya - activity of 14.05.2021 - photo Conred

In Chile, the Sernageomin recorded at the Laguna del Maule Volcanic Complex a seismic swarm, composed of 156 VT / volcano-tectonic earthquakes, associated with the fragmentation of rocks. They are located 7 km SSO from the center of the laguna; the major earthquake has its hypocenter at 6.300 m. depth for a magnitude of 1.8 (ML).

No superficial change is observed thanks to webcams.

The volcanic alert remains in Amarilla.

 

Source Sernageomin

Laguna del Maule - photo Sernageomin

Laguna del Maule - photo Sernageomin

Two orange VONAs were issued by KVERT, respectively on May 9 and 15, 2021, for Ebeko, in the Kurils.

A moderate eruptive activity continues, characterized on May 15 by an explosion accompanied by an ash plume at more than 2,300 m. asl., drifting east from the volcano.

 

Source: KSCNET / KVERT

Ebeko - explosion dated 13.04.2021 - photo S.Lakomov / KSCNET archives - IVS FEB RAS

Ebeko - explosion dated 13.04.2021 - photo S.Lakomov / KSCNET archives - IVS FEB RAS

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