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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
Stromboli - 06.11.2021 / 4:06 p.m. - webcam therm. INGV OE

Stromboli - 06.11.2021 / 4:06 p.m. - webcam therm. INGV OE

The National Institute of Geophysics and Volcanology, Etneo Observatory, announces that as of approximately 2:00 p.m. UTC, CCTV camera images from Stromboli show an increase in projection activity and explosions from active vents in the area. from the North crater. The coarse material produced covers the sides of the cone abundantly and rolls along the Sciara del Fuoco.

From 14:40 UTC, an overflow of lava is also observed from the edge of the north crater area. The lava flow produced is in the upper sector of the Sciara del Fuoco.
The trend of the average amplitude of the volcanic tremor does not show significant variations and the values ​​are maintained at the average level. The frequency and amplitude of transients attributable to explosive events do not show significant variations.
The networks of tilt and GNSS stations for monitoring soil deformation on the island do not show any significant changes.

 

Source: INGV OE

Stromboli - 06.12.2021 / 06:03 - webcam therm. INGV OE

Stromboli - 06.12.2021 / 06:03 - webcam therm. INGV OE

In Merapi, on the island of Java, the activity level has remained at level III (siaga) since November 5, 2020 at 12:00 WIB.

Thanks to the seismographic recordings of June 11, 2021, it was recorded:
- 4 earthquakes linked to pyroclastic avalanche flows
- 124 times the avalanche earthquake
- 12 times the blast / emission earthquake
- 21 hybrid / multiphase earthquakes
- 2 times the shallow volcanic earthquake
- 1 distant tectonic earthquake.

 

On June 12, 2021 at 8:30 a.m. WIB was recorded on a seismogram with an amplitude of 67 mm and a duration of 155 seconds. No visuals due to fog, glide distance estimated at 2,000 m to the southwest.

 

Sources: PVMBG, Magma Indonesia and BPPTKG

Merapi - Pyroclastic flow of collapse on 06.11.2021 / 08:14 - Babadan-2 webcam

Merapi - Pyroclastic flow of collapse on 06.11.2021 / 08:14 - Babadan-2 webcam

Merapi - seismicity for the week on 06.11.2021 (above) & seismograms for 06.12.2021 (below) - Doc. BPPTKG
Merapi - seismicity for the week on 06.11.2021 (above) & seismograms for 06.12.2021 (below) - Doc. BPPTKG

Merapi - seismicity for the week on 06.11.2021 (above) & seismograms for 06.12.2021 (below) - Doc. BPPTKG

The surface of the lake in the Halama'uma'u Crater of Kilauea is now completely covered with a solidified lava crust. No surface activity or evidence of recent surface activity has been observed over the past week except for minor subsidence in the range of 1 to 2 meters (3 to 7 feet).

Small, higher-temperature spots around the rim and in local cavities remain visible on the webcam thermal imaging, albeit at temperatures well below those associated with molten lava.

 

Source: HVO-USGS

Kilauea - Halema'uma'u lava lake - HVO therm webcam 06.11.2021 / 8:42 p.m. HST

Kilauea - Halema'uma'u lava lake - HVO therm webcam 06.11.2021 / 8:42 p.m. HST

The Volcanological Observatory of Piton de la Fournaise, the Reunion National Park and the Cité du Volcan, are pleased to announce the baptismal name of the new volcanic cone, resulting from the eruption from April 9 to May 24, 2021: the "Piton Guy Valcourt PICARD".

Guy Valcourt PICARD was a former guide and carrier of the Volcano. He left us at the age of 85, shortly before the onset of this eruption. He was the son of Alfred PICARD, emblematic guide of the Volcano who marked his time in the 50s / 60s and who forged the spirit of the last former guides and carriers of the Volcano.

He was introduced to geology by the scholars Marcel Ducrot, Maurice Jean, Haroun Tazieff, Maurice and Katia Krafft, whom he accompanied to the Piton de la Fournaise.

 

Source: P.Huet / City of the volcano

Le piton Guy Valcourt PICARD - City of the volcano / photo P.Huet

Le piton Guy Valcourt PICARD - City of the volcano / photo P.Huet

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