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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
  Ili Lewotolok - 05.07.2021 / 08:36 WITA - PVMBG webcam

 Ili Lewotolok - 05.07.2021 / 08:36 WITA - PVMBG webcam

The eruption of Ili Lewotolok, which began on November 27, 2020 (GVP), continues.

Seismicity has been on the rise since mid-June 2021.

The eruptive episodes follow one another in recent days: the PVMBG noted an eruptive episode on July 5 at 08:36 WITA, accompanied by a plume of gray ash observed at about 1,000 meters above the summit, and drifting towards the southeast; its seismogrammic imprint is of a max. 45 mm for 42 sec.

On July 6 at 06:52 WITA, another eruptive episode was accompanied by a plume of gray ash 800 m. above the summit, recorded with a max. 45 mm for 46 sec.

The activity level remains at 3 / siaga.

The VAAC Darwin issued an orange aviation code on July 6.

 

Sources: PVMBG, Magma Indonesia, VAAC Darwin

Ili Lewotolok - seismicity on the rise since mid-June 2021 - Doc. Magma Indonesia 05.07.2021

Ili Lewotolok - seismicity on the rise since mid-June 2021 - Doc. Magma Indonesia 05.07.2021

Ili Lewotolok - 07/06/2021 / 06:54 AM WITA - PVMBG webcam

Ili Lewotolok - 07/06/2021 / 06:54 AM WITA - PVMBG webcam

The Merapi, on Java, presented yesterday July 5 a white plume, observable at 100-150 meters above the summit.

Seismicity was characterized by:

- 1 earthquake linked to a pyroclastic flow, with an amplitude of 52 mm and a duration of 123.8 seconds.
- 242 Avalanche / collapse earthquakes, with an amplitude of 3-34 mm and a duration of 11-140 seconds.
- 18 blast / emission earthquakes, with an amplitude of 3 to 15 mm and the duration of the earthquake from 5 to 37.2 seconds.
- 57 hybrid / multiphase earthquakes
- 5 shallow volcanic earthquakes.

The activity level remains at 3 / siaga.

 

Sources: PVMBG, Magma Indonesia, BPPTKG

Merapi - seismicity at 05.07.2021 - Doc. BPPTKG

Merapi - seismicity at 05.07.2021 - Doc. BPPTKG

Merapi, from Deles - 07.05.2021 / 12.57pm - photo Sukiman Lintas Merapi
Merapi, from Deles - 07.05.2021 / 12.57pm - photo Sukiman Lintas Merapi

Merapi, from Deles - 07.05.2021 / 12.57pm - photo Sukiman Lintas Merapi

In Iceland, the eruption of Fagradalsfjall continues according to the pattern noticed in recent days, as evidenced by the tremor diagram.

 

Source: Hraun.vedur.is

Fagradalsfjall eruption - Landsat 8 / USGS image from 04.07.2021

Fagradalsfjall eruption - Landsat 8 / USGS image from 04.07.2021

Fagradalsfjall - tremor on 05.07.2021 - Doc. Hraun.is

Fagradalsfjall - tremor on 05.07.2021 - Doc. Hraun.is

A loud explosion rocked the Caspian Sea region on July 4 at ~ 9:30 p.m. local, where Azerbaijan has vast offshore oil and gas fields.

The cause of the explosion, which raised a column of fire into the sky on Sunday night, was not immediately determined, but state oil company Socar said preliminary information indicated it was it was a mud volcano.

Socar spokesman Ibrahim Ahmadov was quoted by Azerbaijani news agency APA as saying that the explosion took place about 10 km (six miles) from the Umid gas field, which is located 45 miles (75 km) from the coast of the capital, Baku.

Mark Tingay, a mud volcanoes expert and assistant associate professor at the Australian University of Adelaide, said the evening July 4 explosion in the Caspian Sea "could certainly be a mud volcano" and that the location "roughly corresponds" to a mud volcano called Makarov Bank, which exploded in 1958, releasing a column of flame 500 to 600 meters high and 150 meters wide.

The country has "hundreds" of mud volcanoes, a quarter of which are known to erupt violently.

 

Source: international media & Twitter / Mark Tingay

Azerbaijan - Makarov Bank mud volcano, 07.05.2021 - photo Gavriil Grigorov / TASS

Azerbaijan - Makarov Bank mud volcano, 07.05.2021 - photo Gavriil Grigorov / TASS

Azerbaijan - mud volcano 07/05/2021 - photo Euronews

Azerbaijan - mud volcano 07/05/2021 - photo Euronews

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