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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
 Pacaya - explosive and effusive activity this 02.11.2021 - photoConred

 Pacaya - explosive and effusive activity this 02.11.2021 - photoConred

Strombolian activity continues at a high level in Pacaya, this February 09, with episodes of increase lasting 3 to 5 hours, during which explosions at the Mackenney crater generate expulsions of volcanic and ballistic materials at a height between 200-300 mr. dispersing around the crater, accompanied by ash puffs reaching 3,000-3,200 M. asl, with a dispersion over a western and southwestern sector over 10 km.

From 4 p.m. local, activity continues at a high level, with moderate to strong explosions and expulsions of materials at 500 m. above the Mackenney cone.

 

Pacaya - ash plume from 02.09.2021 - photo William Chigna

Pacaya - ash plume from 02.09.2021 - photo William Chigna

Pacaya - Sentinel-2 bands images 12,11,5 from 09.02.2021 - Doc. Insivumeh - one click to enlarge
Pacaya - Sentinel-2 bands images 12,11,5 from 09.02.2021 - Doc. Insivumeh - one click to enlarge

Pacaya - Sentinel-2 bands images 12,11,5 from 09.02.2021 - Doc. Insivumeh - one click to enlarge

Pacaya National Park was closed following this activity - doc. Insivumeh

Pacaya National Park was closed following this activity - doc. Insivumeh

On the southern flank, an active lava flow, of fissural origin, reaches a length of 1,300 m .; its lava front generates avalanches of blocks over approximately 200 meters.

The tremor is still recorded.

Pacaya National Park was closed following this activity and a precautionary notice issued to civil aviation.

 

Sources: Insivumeh and Conred

Mt. Michael - activity of 02.09.2021 - image Copernicus / Sentinel L2A custom scripts - one click to enlarge

Mt. Michael - activity of 02.09.2021 - image Copernicus / Sentinel L2A custom scripts - one click to enlarge

Sentinel L2A spotted a small plume emitted by Mount Michael on February 9, on Saunders island in the South Pacific.

Sulfur dioxide emissions, recorded by Tropomi, appear low.

 

Sources: Santiago Gassó, Simon Carn, and Sentinel-2 / Copernicus

Ili Lewotolok - eruptive episode of 10.02.2021 / 12:33 WITA - Doc. PVMBG

Ili Lewotolok - eruptive episode of 10.02.2021 / 12:33 WITA - Doc. PVMBG

There was an eruption at Mount Ili Lewotolok this Wednesday February 10, 2021 at 12:33 WITA with an ash plume observed at ± 700 m above the summit (± 2123 m above sea level). We observe that the ash plume is white to gray, with a thick intensity, towards the east. This eruption was recorded on a seismograph with a maximum amplitude of 18 mm and a duration of 25 seconds.

The seismicity of February 10, 2021 is characterized by:

- 5 eruption earthquakes

- 3 blast / emission earthquakes

- 9 episodes of non-harmonic tremor

- 1 low frequency earthquake

- 2 distant tectonic earthquakes

- and continuous tremor, amplitude 0.5-2 mm (dominant 0.5 mm)

Ili Lewotolok - eruptive episode of 11.02.2021 / 07:35 WITA - Doc. PVMBG

Ili Lewotolok - eruptive episode of 11.02.2021 / 07:35 WITA - Doc. PVMBG

This February 11, from midnight to 12 noon, 7 eruption earthquakes were recorded.

The activity level remains at 3 / siaga; People around Mount Ili Lewotolok and visitors / climbers / tourists are recommended not to perform activities within 3 km of the summit / crater. Residents of the village of Jontona should always be aware of the potential threat of landslide hazards that may be accompanied by pyroclastic flows originating from the south-eastern part of the volcano's summit / crater.

 

Source: Magma Indonesia

Merapi - 02.10.2021 - dome - photo 740 aerialvideography

Merapi - 02.10.2021 - dome - photo 740 aerialvideography

The seismicity of the Merapi has experienced various fluctuations in recent days.

On February 9, the PVMBG counted :

- 134 collapse / avalanche earthquakes

- 137 multiphase hybrid earthquakes

- 2 blast / emission earthquakes

- 20 shallow volcanic earthquakes.

Merapi - seismicity at 10.02.2021 - Doc. BPPTKG


On February 10, the seismicity is characterized by:

- 158 collapse / avalanche earthquakes

- 19 hybrid multiphase earthquakes

- a shallow volcanic earthquake

- and 3 distant tectonic earthquakes.

 

The level of activity remains at 3 / siage, with a potential danger zone of 5 km in the SSO sector.

 

Sources: PVMBG, Magma Indonesia and BPPTKG 

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