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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 : #Actualités volcaniques
 Sinabung - eruption of the 25.02.2018 / 20h38 loc. - photo Endro Lewa

Sinabung - eruption of the 25.02.2018 / 20h38 loc. - photo Endro Lewa

 Sinabung - eruption of the 25.02.2018 / 20h38 loc. - photo Endro Lewa

Sinabung - eruption of the 25.02.2018 / 20h38 loc. - photo Endro Lewa

The eruption of February 19 at Sinabung opened the supply duct. Emissions of ashes and gases followed one another yesterday, with plumes ranging from 100 to 1,000 meters above the summit.

This activity was crowned by a strong eruption this 25 February at 20h30 loc., during 618 seconds; it was accompanied by a plume of about 3,800 meters, travelled by lightning, and scattered of ashes to the southwest.

Sinabung - 25.02.2018 / 9:31 and 16:53 loc. - pictures of Endro Lewa
Sinabung - 25.02.2018 / 9:31 and 16:53 loc. - pictures of Endro Lewa

Sinabung - 25.02.2018 / 9:31 and 16:53 loc. - pictures of Endro Lewa

Sinabung - strong frictions of ashes in the plume and lightning - 25.02.2018 / around 8.30 pm loc. - photo Firdaus Surbakti / via Beidar Sinabung

Sinabung - strong frictions of ashes in the plume and lightning - 25.02.2018 / around 8.30 pm loc. - photo Firdaus Surbakti / via Beidar Sinabung

Sinabung - 25.02.2018 / around 8.30pm loc. - dispersion of the ashes of the eruption - photo Firdaus Surbakti / via Beidar Sinabung

Sinabung - 25.02.2018 / around 8.30pm loc. - dispersion of the ashes of the eruption - photo Firdaus Surbakti / via Beidar Sinabung

Note that the eruption of the past week has pulverized a large part of the dome, leaving a wall ESE side ... this configuration can allow to return to pyroclastic flows to the south as in 2014.

Sources: PVMBG & BNPB

Villarica - evolution of the thermal signature between 5 and 25 February 2018 - incandescence on 25.02.2018 - Doc. Povi
Villarica - evolution of the thermal signature between 5 and 25 February 2018 - incandescence on 25.02.2018 - Doc. Povi

Villarica - evolution of the thermal signature between 5 and 25 February 2018 - incandescence on 25.02.2018 - Doc. Povi

At Villarica, after two months of calm, the night glow returned.

The POVI reports a lava well of 15 meters by 9 meters, and gas outlets with characteristics similar to those emerging from airplane turbines (volcanic jetting) ... identical to those reported from 9 to 12 December 2014, and which had left erosive traces inside the volcano's chimney.

Source: POVI & Werner Keller

Villarica 10-13 December 2014 - traces of erosion by violent outflows of gas "Volcanic jetting" - Doc. POVI archives

Villarica 10-13 December 2014 - traces of erosion by violent outflows of gas "Volcanic jetting" - Doc. POVI archives

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