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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 on 09/28/2020 / 5h52 - photo Eduardo Cabarrus / Twitter

Pacaya - explosive and effusive activity on 09/28/2020 / 5h52 - photo Eduardo Cabarrus / Twitter

In Pacaya, Strombolian activity continues, with explosions ejecting materials between 78 and 150 meters above the Mackenney crater. Of the two lava flows, one to the north, the other to the northeast, only the one on the northern flank remains active and approaches 400 meters long.

Fuego - 09/27/2020 / 04:04 am - INSIVUMEH webcam

Fuego - 09/27/2020 / 04:04 am - INSIVUMEH webcam

Fuego - avalanches to barranca Seca on 09/26/2020 - Landsat 8 SWIR image

Fuego - avalanches to barranca Seca on 09/26/2020 - Landsat 8 SWIR image

At Fuego, the explosions, at a rate of 6 to 12 per hour, generate incandescent impulses 200 meters above the crater, and are accompanied by ash plumes at 4,500-4,700 meters asl., dispersing to the west and the southwest for about ten kilometers. Avalanches affecting Barancas Seca, Ceniza, Tanilyua, Trinidad, Las Lajas and Honda, some reaching the vegetation limit. Fine ashes fall on the surroundings of Panimache, Yepocapa, Sangre de Cristo, Morella and Santa Sofia.

 

Sources: Insivumeh & Conred

Semeru - hot spot at the top - image Sentinel-2 L2A bands 12,11,4 from 09/27/2020

Semeru - hot spot at the top - image Sentinel-2 L2A bands 12,11,4 from 09/27/2020

VAAC Darwin has issued orange VONA for the Semeru over the last three days, with an ash plume respectively at 3,876 meters asl, 4,176 m. asl and 3.976 m. asl, September 26, 27 and 28, according to observations from the ground.

The seismis of September 27 is declined in

- 43 eruption earthquakes

- 4 blast earthquakes

- an episode of harmonic earthquake.

The activity level remains at 2 / waspada, with a forbidden zone of 1 km radius, increased to 4 km. at the SSE of the Jongring Seloko active breached crater, due to potential pyroclastic flows in connection with the collapse of the dome.

 

Sources: VAAC Darwin and PVMBG

 Fuji-san - first snows revealing access trails - flyover Asahi Shimbun 09/28/2020

Fuji-san - first snows revealing access trails - flyover Asahi Shimbun 09/28/2020

As a bonus, the first snows on Mount Fuji, ahead of previous years, reveal the layout of various access paths to the summit.

 

Source: Asahi shimbun / Twitter

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