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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
Fuego - moderate avalanche on 23.11.2018 - photo Franklin Reyes, Finca La Candelaria. via Conred

Fuego - moderate avalanche on 23.11.2018 - photo Franklin Reyes, Finca La Candelaria. via Conred

The Fuego shows a slight increase in activity, with explosions accompanied by an ash plume rising to 4,700-5,000 meters asl. traveling 20 km towards a western sector.

Incandescence is observed, as are weak avalanches around the crater; some projectiles reach the limit of the vegetation, in the direction of the barrancas Las Lajas, Ceniza and Seca; ashfall is reported on San Pedro Yepocapa, Panimache, El Porvenir, Morelia, Santa Sofia, Sangre de Cristo and Finca Palo Verde.

Early in the morning of November 14, stronger explosions generating significant fallout are recorded.

Sources: Insivumeh & Conred

Fuego - strong explosions early in the day on 24.11.2018 - Insivumeh seismogram

Fuego - strong explosions early in the day on 24.11.2018 - Insivumeh seismogram

Fuego - night activity (no better photo at the moment) - photo 24.11.2018 / report of 5:42 / Insivumeh

Fuego - night activity (no better photo at the moment) - photo 24.11.2018 / report of 5:42 / Insivumeh

At the Nevados de Chillan complex, whitish pulsatile emissions, dominated by water vapor, mark the crater Nicanor.

Sernageomin provides nighttime glow, small explosions and ballistic projections.

This activity remains in the standards of the technical alert Naranja, in connection with the cycles of growth and destruction of the dome nestled in the crater.

Source: Sernageomin

The Nevados de Chillan complex - Photo Sernageomin

The Nevados de Chillan complex - Photo Sernageomin

The volume of the Merapi summit lava dome was 218,000 m³ on 21 November 2018, with a growth rate of 2,600 m³ / day, a little higher than the previous week.

The seismic activity is lower than last week.

On visual and instrumental results, the lava dome is considered stable.

The activity level remains the same: 2 / waspada

Sources: PVMBG & BPPTKG

Merapi - top and dome 22.11.2018 - Doc BPPPTKG
Merapi - top and dome 22.11.2018 - Doc BPPPTKG

Merapi - top and dome 22.11.2018 - Doc BPPPTKG

Merapi - evolution of the dome between 15.11 and 21.11.2018 - Doc.PVMBG

Merapi - evolution of the dome between 15.11 and 21.11.2018 - Doc.PVMBG

The JMA has raised the alert level of Meakandake to 2 / do not approach the crater, on November 23 at 12:30 JST, following an increase in superficial volcanic earthquakes near the crater Ponmachineshiri since 20 November. (271 on 22.11, 557 on 23.1 at 3 pm local time)

However, there is no reported deformation or plume emitted.

 Meakandake - alert reported at 2 on 23.11.2018 / 12.30 pm JST - Doc.JMA

Meakandake - alert reported at 2 on 23.11.2018 / 12.30 pm JST - Doc.JMA

Akan caldera - Meakan-dake on the left, Akan Fuji in the center -  JMA photo

Akan caldera - Meakan-dake on the left, Akan Fuji in the center - JMA photo

Within the Akan volcanic complex, characterized by a 13 km by 24 caldera, only the Meakandake group has been historically active; the last activity dates back to November 2008, with a small phreatic eruption.

Sources: JMA, NHK web news, and Gloval Volcanism Program / Akan

Last activity of the Meakandake - steam emissions on 28.11.2008 from both the 96-1 crater  and the number 4 crater. - JMA  in GVP

Last activity of the Meakandake - steam emissions on 28.11.2008 from both the 96-1 crater and the number 4 crater. - JMA in GVP

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