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Earth of fire

Actualité volcanique, Article de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #Actualités volcaniques

An increase in seismicity was detected at Bogoslof on 5 January at 13:24 local / 22:24 UTC; It was accompanied by detection of flashes indicating a current eruption. It lasted only 5 minutes. The satellites visualized a detached ash cloud at a height of 9.1 - 10.7 km, moving towards the north. The level of volcanic alert is Warning and that for aviation Red.


Source: AVO

Image of the volcanic cloud detached from the Bogoslof eruption of 5 January at 13:24, taken by the NOAA at 15:36 on the same day. This cloud, consisting of ash, ice and volcanic gases is estimated between 9.1 and 10.7 km of altitude. - Doc. Dave Schneider / AVO - USGS.

Image of the volcanic cloud detached from the Bogoslof eruption of 5 January at 13:24, taken by the NOAA at 15:36 on the same day. This cloud, consisting of ash, ice and volcanic gases is estimated between 9.1 and 10.7 km of altitude. - Doc. Dave Schneider / AVO - USGS.

The Fuego has a white degassing plume rising to 4,000 m. asl, then dispersing to the west and south. Six to eight low to moderate explosions are reported, accompanied by gray plume rising between 4,500 and 5,000 m asl. Incandescent pulses are observed between 100 and 150 m. above the crater, assorted by avalanches of blocks. Numerous ash falls occur in the south and west areas of the volcano.


Source: Insivumeh

 Fuego  - photo Luis Aguilar via Clima Guatemala / 04.01.2017

Fuego - photo Luis Aguilar via Clima Guatemala / 04.01.2017

Between 5 pm on 4 and 5 pm on 5 January, the Turrialba maintained an almost constant activity, characterized by a passive emission of gas, steam and ash in the form of a plume of height varying between 500 and 1,000 m above the Crater, whose falls affected the central valley, and by a variable tremor.


Sources: Ovsicori and RSN

Turrialba - 05.01.2017 / 6h34 - webcams RSN
Turrialba - 05.01.2017 / 6h34 - webcams RSN

Turrialba - 05.01.2017 / 6h34 - webcams RSN

In Chile, the Nevados de Chillan complex has experienced over the past 48 hours a dozen weak pulses, including an eruption at 8:10 pm on Thursday, December 5.

The Operational Committee of Emergencias analyzed the situation before a possible evacuation of the inhabitants of the sector concerned of the Province of Ñuble.


Source: BioBio

Nevados de Chillan - 05.01.2017 / 17h15 GMT - webcam Sernageomin Portezuelo

Nevados de Chillan - 05.01.2017 / 17h15 GMT - webcam Sernageomin Portezuelo

Nevados de Chillan - 05.01.2017 / 20h10 local - photo Sernageomin

Nevados de Chillan - 05.01.2017 / 20h10 local - photo Sernageomin

In Hawaii, a video shows a very hot and very fluid lava waterfall plunging into the ocean at Kamokuna, after the collapse of the delta and part of the cliff, which cut the tunnel feeding in height.

The encounter between the lava and the waters engenders explosions with projections of spatters, Pele hair and volcanic sand to the cliff above the entrance to the ocean. What remains of the platform has cracks indicating potential instability.
 
Source: HVO

Kilauea / Kamokuna - new coastline after the collapse of the lava delta - HVO

Kilauea / Kamokuna - new coastline after the collapse of the lava delta - HVO

Kilauea / Kamokuna - Cracks in the remaining part of the lava delta after the collapse - HVO

Kilauea / Kamokuna - Cracks in the remaining part of the lava delta after the collapse - HVO

Video of lava cascade from new lava viewing area at Kamokuna

Video NPS 03.01.2017

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