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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 : #Actualités volcaniques
 Popocatépetl - eruption on 05.10.2017 / 2h26 -2h27 - webcamsdeMexico
 Popocatépetl - eruption on 05.10.2017 / 2h26 -2h27 - webcamsdeMexico

Popocatépetl - eruption on 05.10.2017 / 2h26 -2h27 - webcamsdeMexico

In Mexico, Popocatépetl exhibited a strong vulcanian eruption on 5 October at 02:26 local, accompanied by an ejection of incandescent fragments 600 meters above the crater, which fell on its flanks for more than one kilometer, and a plume of ash rising to 2,000 meters above the summit.
VAAC Washington issued several advisories, stating that the ash plume stretched 28 km to the west, with a maximum altitude of 6.4 km.
The alert remains at amarillo fase 2, with an exclusion zone of 12 km.


Sources:
- Segob / Twitter & WebcamsdeMexico - The Cenapred is currently inaccessible.
- VAAC Washington

The last bulletin of the Insivumeh reports an increase in the explosive activity of the Fuego.
Vulcanian explosions have become constant and are accompanied by plumes heavily loaded with ashes rising to about 5,000 meters asl before moving 20 km to the west and south.
The lava fountains reach 300 meters above the crater, and generate ballistic projections over 600 meters, and avalanches in the vicinity of the crater towards the barrancas Cenizas and Seca.
Due to the presence of a tropical depression, the rains could cause ashes already present and form lahars.
 
Sources: Insivumeh & Conred.

Agung and its small gas plume on 05.10.2017 / 06h local - photo BNPB

Agung and its small gas plume on 05.10.2017 / 06h local - photo BNPB

Agung - summary table of the seismicity on 05.10.2017 - doc. Magma Indonesia

Agung - summary table of the seismicity on 05.10.2017 - doc. Magma Indonesia

At Agung, seismicity continues to fluctuate at high levels, with an average of 1-3 earthquakes per minute, nearly 600 / day,
Between September 24 and October 5, the number of superficial volcanic earthquakes is on the rise, indicating a high surface magmatic activity, and the pressurization of the volcano.
By 5 October, there were 319 VB volcanic earthquakes, 524 deep VA volcanic earthquakes and 75 local tectonic earthquakes.


The gas and vapor emanations produce small plumes reaching 50 - 200 meters above the edge of the crater.
The alert status was extended to October 15 (BNPB)


The information and prevention work of the BNPB is important and targets adults and children, who are sensitized via comics and smartphones,
 
Sources: PVMBG, Magma Indonesia and BNPB

BNPB Information and Prevention Work for Bali children affected by Agung's Instability - a click to EnlargeBNPB Information and Prevention Work for Bali children affected by Agung's Instability - a click to Enlarge

BNPB Information and Prevention Work for Bali children affected by Agung's Instability - a click to Enlarge

In Japan, the alert level of the Kirishima - Shinmoedake complex was raised to 2 / not approaching the crater by the JMA.
From September 23, the number of volcanic earthquakes increased, reaching Sunday, October 1, 138 episodes.
 
Sources: TBS News, via Shérine France and JMA

 

Kirishima volc.complex - sismicity between 23.09 and 05.10.2017 -  WN weathernews

Kirishima volc.complex - sismicity between 23.09 and 05.10.2017 - WN weathernews

The Kirishima - Shinmoedake Complex - photo S.Nakano 08.03.2011

The Kirishima - Shinmoedake Complex - photo S.Nakano 08.03.2011

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