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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
 Merapi - the eruptive plume on 06.21.2020 / 9:15 a.m. WIB - Doc. BPPTKG

 Merapi - the eruptive plume on 06.21.2020 / 9:15 a.m. WIB - Doc. BPPTKG

An eruption occurred on Sunday, June 21, 2020 at 9:13 a.m.WIB at the Merapi, accompanied by a thick gray-brown ash plume observed at ± 6000 m above the peak, drifting south. A ground observer notes the top of the ash cloud at approximately 8,968 meters asl., Possibly higher. This eruption was recorded on a seismograph with a maximum amplitude of 75 mm and a duration of 328 seconds.

VAAC Darwin and PVMBG have decreed a red VONA; according to VAAC Darwin, the ashes spotted at flight altitude 200 should dissipate within 3 hours.

Merapi - the eruption seen by the Himawari-8 satellite on 21.06.2020 / 10am - Doc. via BMKG

Merapi - the eruption seen by the Himawari-8 satellite on 21.06.2020 / 10am - Doc. via BMKG

Activity of Merapi and Rincon de La Vieja.

At the seismicity level, we will notice an increase in the number of volcanic earthquakes in the week before, as well as the number of hybrid earthquakes, to a lesser extent.

Merapi -seismicity from 14 to 20.06.2020 - Doc. BPPTKG

Merapi -seismicity from 14 to 20.06.2020 - Doc. BPPTKG

For the day of June 21, from 6 to 12 noon WIB, the PVMBG reports:

- 3 eruption earthquakes with an amplitude of 60 to 80 mm and an earthquake duration of 60.2 to 360.7 seconds.

- 11 blast earthquakes with an amplitude of 3-12 mm, and an earthquake duration of 11.3-53.2 seconds.

- 13 low frequency earthquakes with an amplitude of 5 to 30 mm and an earthquake duration of 11.2 to 40.3 seconds.

- 2 hybrid earthquakes with an amplitude of 3-5 mm, S-P 0.3 seconds and an earthquake duration of 5.7-6 seconds.

- 2 volcanic earthquakes with an amplitude of 8 to 45 mm, S-P 0.8 to 0.9 seconds and 7.1 to 17 seconds of long earthquake.

 

The activity level remains at 2 / waspada, with a danger zone of 3 km radius around the summit.

 

Sources: PVMBG, Magma Indonesia, BPPTKG, VAAC Darwin

Activity of Merapi and Rincon de La Vieja.

The Ovsicori reports a new hydrothermal eruption in Rincon de La Vieja this June 20, 2020 at 11:54 am local; we do not know the height of the eruptive plume due to poor visibility conditions.

 

Source: Ovsicori

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