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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 - under the clouds 10.10.2020 / 11.57 am WIB- Webcam PVMBG

Merapi - under the clouds 10.10.2020 / 11.57 am WIB- Webcam PVMBG

In Merapi, on the island of Java, in activity level 2 / waspada, the BPPTKG reports that the number of multiphase hybrid earthquakes has doubled compared to the previous days.

Merapi - seismicity at 09.10.2020 - Doc. BPPTKG

Merapi - seismicity at 09.10.2020 - Doc. BPPTKG

Merapi - seismicity at 09.10.2020 - Doc. Magma Indonesia

Merapi - seismicity at 09.10.2020 - Doc. Magma Indonesia

For October 10 / 00 - 12am WIB, the seismicity is characterized by:

- 4 collapse earthquakes, with an amplitude of 5 to 45 mm and a duration of 11.5 to 27.7 seconds.

- 2 blast earthquakes, with an amplitude of 5 to 11 mm and the earthquake lasted 11.8 to 24.1 seconds.

- 1 low frequency earthquake, with an amplitude of 3 mm and the earthquake lasted 15.8 seconds.

- 11 hybrid / multiphase earthquakes, with an amplitude of 2-42 mm, S-P 0.3-0.5 seconds and the duration of the earthquake of 6-12.2 seconds.

 

Recommendations:

- Current potential dangers: pyroclastic flows due to the collapse of the lava dome and the fall of volcanic materials due to explosive eruptions.

- Areas without human activities within a radius of 3 km from the summit

- The public must anticipate the dangers of volcanic ash from pyroclastic flows and explosive eruptions.

- The community should be aware of the dangers of lahar, especially when it is raining around the top of Mount Merapi.

 

Sources: PVMBG, BPPTKG. Magma Indonesia

Klyuchevskoy - photos A.Demyanchuk / Volkstat 07-08.10.2020 - via Shérine France
Klyuchevskoy - photos A.Demyanchuk / Volkstat 07-08.10.2020 - via Shérine France

Klyuchevskoy - photos A.Demyanchuk / Volkstat 07-08.10.2020 - via Shérine France

Brief news:

 

In Kamchatka, effusive activity is maintained in Klyuchevskoy, as evidenced by these photos of October 7-8 (see article of 09,10,2020)

Sources: Volkstat / via Shérine France & KVERT

 Karymsky - Volcanic Ash advisory for 09.10.2020 - Doc. VAAC Tokyo

Karymsky - Volcanic Ash advisory for 09.10.2020 - Doc. VAAC Tokyo

VAAC Tokyo issued a volcanic ash advisory for the Karymsky on 09.10.2020, directed to the SSE.

Lengai - Doc. Mirova / Sentinel 2 bands 12,11,8A at 05.10.2020 / 8h00

Lengai - Doc. Mirova / Sentinel 2 bands 12,11,8A at 05.10.2020 / 8h00

Lengai - thermal anomalies at 09.10.2020 / 11:15 p.m. - Doc. Mirova - one click to enlarge
Lengai - thermal anomalies at 09.10.2020 / 11:15 p.m. - Doc. Mirova - one click to enlarge

Lengai - thermal anomalies at 09.10.2020 / 11:15 p.m. - Doc. Mirova - one click to enlarge

Small thermal anomalies are reported at Ol Doinyo Lengai and Nishinoshima

Source: Mirova

Nishinoshima - thermal anomalies at 10.10.2020 / 03:30 - Doc. MirovaMODIS_logVRP

Nishinoshima - thermal anomalies at 10.10.2020 / 03:30 - Doc. MirovaMODIS_logVRP

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