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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
Gunung Ibu - eruptive episode of 19.05.2022 / 10:00 WIT - PVMBG webcam - Magma Indonesia

Gunung Ibu - eruptive episode of 19.05.2022 / 10:00 WIT - PVMBG webcam - Magma Indonesia

Gunung Ibu experienced an eruptive episode on Thursday May 19, 2022 at 09:56 WIT with the height of the ash column observed at ± 1500 m above the summit (± 2825 m above sea level). The ash column is observed to be gray with thick intensity to the west. This eruption was recorded on a seismograph with a maximum amplitude of 30 mm and a duration of 75 seconds.


The seismicity of May 18, 2022 is characterized by:

- 48 eruption earthquakes, with an amplitude of 15 to 30 mm and an earthquake duration of 20 to 75 seconds.
- 19 avalanche earthquakes, with an amplitude of 2-3 mm and an earthquake duration of 15-45 seconds.
- 18 emission earthquakes, with an amplitude of 5 to 11 mm and the duration of the earthquake from 10 to 45 seconds.
- 8 harmonic episodes
- 32 shallow volcanic earthquakes 32 times with an amplitude of 3 to 8 mm and an earthquake duration of 4 to 10 seconds.
- 1 distant tectonic earthquake

The activity level is at 2 / waspada; Communities around Mount Ibu and visitors/tourists are advised not to travel within the 2.0 km radius and the sector expansion is 3.5 km to the crater opening in the northern part from the active crater of Mount Ibu.


 

Source: PVMBG, Magma Indonesia

Sinabung - 18.05.2022 / 11:56 WIB - PVMBG webcam, Magma Indonesia

Sinabung - 18.05.2022 / 11:56 WIB - PVMBG webcam, Magma Indonesia

Sinabung - notice of activity level reduction to 2 on May 18, 2022 - Doc.PVMBG

Sinabung - notice of activity level reduction to 2 on May 18, 2022 - Doc.PVMBG

PVMBG raised the activity level of Sinabung from 3/siaga to 2/waspada on May 17, 2022 at 5 p.m. WIB

The white plume from the main crater was observed about 100-400 meters from the summit.

The seismicity of May 18 is characterized by
1 emission earthquake, with an amplitude of 2 mm and an earthquake duration of 90 seconds.
1 deep volcanic earthquake with an amplitude of 55 mm, S-P 1.7 seconds and an earthquake duration of 22 seconds.
3 distant tectonic earthquakes.

 

The level of activity is therefore at 2 / waspada, with a recommendation to communities and visitors/tourists not to carry out activities in the villages that have been relocated, as well as within a radial radius of 3 km from the summit of Mount Sinabung, as well as a sectoral radius of 5 km for the south-east sector, and 4 km for the east-north and west sector.

 

Sources: PVMBG, Magma Indonesia

Karymsky volcano - Sentinel-2 image from 19.05.2022 - click to enlarge

Karymsky volcano - Sentinel-2 image from 19.05.2022 - click to enlarge

The Karymsky volcano, erupting in Kamchatka, threw up two columns of ash on Thursday afternoon to a height of up to 8 and 6.7 km above sea level, according to the emergency response team. of Kamchatka Volcanic Eruption (KVERT) from the Institute of Volcanology and Seismology of the Far Eastern Branch of the Russian Academy of Sciences.
The ash plume moved to the east of the volcano.

 

Mirova reports thermal anomalies between 1 and 5 MW on 18.05, and 63 MW on 19.05.

 

Sources: Interfax https://www.interfax-russia.ru/ (KVERT unreachable), Sentinel-2 and Mirova

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