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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
Sakurajima - 26.05.2020 / 11.57 am - Doc. JMA

Sakurajima - 26.05.2020 / 11.57 am - Doc. JMA

 Sakurajima - volcanic ash advisory 27.05.2020 - Doc. VAAC Tokyo

Sakurajima - volcanic ash advisory 27.05.2020 - Doc. VAAC Tokyo

The explosive activity continues at Sakurajima, with some explosions and ash plumes covered with lightning.

We will pin an explosion at 11:57 am on May 26, with a vertical plume reaching 1,000 meters above the summit.

At the end of the day on May 26, around 9:07 p.m., an explosion at the summit crater of the Minamidake generated a plume of gas and ash rising up to 900 meters above the crater.

 

Another on May 27, reported by the VAAC Tokyo at 4:23 am, was accompanied by a plume at a flight altitude of 40, which could drift towards the ENE.

The JMA reports an explosion at 2 p.m., with a colored plume 2,000 meters above the crater.

 

Sources: JMA & VAAC Tokyo

Sakurajima Explosive eruption May 26, 2020 21:07 - 桜島 爆発的噴火

Activity continues at Karymsky, where KVERT reports an explosion on May 27, 2020, generating an ash plume at more than 6,000 meters asl., Drifting towards the ENE of the volcano.

The aviation code remains orange, as ash explosions are likely to occur at any time.

 

Sources: KVERT & VAAC Tokyo.

Karymsky - volcanic ash advisory 27.05.2020 - Doc. VAAC Tokyo

Karymsky - volcanic ash advisory 27.05.2020 - Doc. VAAC Tokyo

In Costa Rica, the eruptive activity of Rincon de La Vieja continues with regular hydrothermal explosions.

The Ovsicori reports for May 25, 2020, after a sequence of gas pulses, small, almost continuous eruptions - more than 10 episodes in an hour - accompanied by plumes 1,000 meters above the crater. Two episodes are pinned, at 5:35 p.m. local and 5:38 p.m. local, the latter with materials reaching the edge of the active crater.

On May 26, an eruption was recorded at 8:05 am local, without being able to specify the height of the plume for lack of visibility; it lasted a minute.

The same day, at 4:21 pm local time, another explosion generated a plume of 1,500 meters above the crater; the activity lasted 2 minutes.

 

Source: Ovsicori

Rincon de La Vieja - 25.05.2020 / 5:57 pm - photo Edward Valerio González via Ovsicori

Rincon de La Vieja - 25.05.2020 / 5:57 pm - photo Edward Valerio González via Ovsicori

In Merapi, on Java, on alert 2 / waspada, the PVMBG reports on the level of seismicity for this May 26, 202:

- 5 avalanche earthquakes, with an amplitude of 2 to 6 mm and an earthquake duration of 7 to 23 seconds. The sliding distance and the direction of fall are not observed.

- 4 blast earthquakes, with an amplitude of 2 to 9 mm and an earthquake duration of 8 to 22.9 seconds.

- 8 hybrid earthquakes, with an amplitude of 2-3 mm, S-P 0.3-0.4 seconds and an earthquake duration of 5-7.6 seconds.

 

Potential dangers currently present themselves in the form of pyroclastic flows linked to the possible partial collapse of the lava dome and the fall of volcanic material following explosive eruptions.

The area with a radius of 3 km from the summit of Mount Merapi is prohibited for human activities

 

Sources: PVMBG & BPPTKG.

Merapi - exhalation (gas blast) on 26.05.2020 / 06:22 - Doc. Volcano YT

Merapi - exhalation (gas blast) on 26.05.2020 / 06:22 - Doc. Volcano YT

Merapi - activity from 26.05.2020 / 00 at midnight - Doc. BPPTKG

Merapi - activity from 26.05.2020 / 00 at midnight - Doc. BPPTKG

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