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Earth of fire

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

Publié par Bernard Duyck
Publié dans : #Actualités volcaniques
 Sinabung - the 03.06.2015 / 9:11 - photo endrolew@

Sinabung - the 03.06.2015 / 9:11 - photo endrolew@

The BNPB reported a sharp rise in activity level of Sinabung volcano. The constantly increasing volume of lava dome reaches more than 3 million cubic meters, and is weakened.

Because of the risk of pyroclastic flows, the prohibited area of 5 km remains in force, to 7 km. on the south and southeast slopes.

The alert level was recovered to IV / Awas

Carte des risques pour le Sinabung - doc. PVMBG

Carte des risques pour le Sinabung - doc. PVMBG

The summit of Cotopaxi - photo Jose Luis Espinosa-Naranjo 2015

The summit of Cotopaxi - photo Jose Luis Espinosa-Naranjo 2015

In Ecuador, the Cotopaxi recorded since mid-April an increase of seismicity, particularly of earthquakes associated with fluid flow within the building.

The IGEPN relates significant variations in sulfur dioxide levels, perceived by mountaineers. The deformation of the sides remains without major changes.

Cotopaxi - left, sulfur dioxide emissions in 2015 - right, the VLPs earthquakes from January to May 2015 - Doc. IGEPNCotopaxi - left, sulfur dioxide emissions in 2015 - right, the VLPs earthquakes from January to May 2015 - Doc. IGEPN

Cotopaxi - left, sulfur dioxide emissions in 2015 - right, the VLPs earthquakes from January to May 2015 - Doc. IGEPN

An overview of Wolf volcano on May 29 confirms decreased activity.

A plume of gas, ash (white) overcomes of 2-3 km the volcano before heading north-west. The active lava flows relate flanks East and Southeast, the East flow reaching the Pacific ..

Concentrations of sulfur dioxide in the atmosphere are declining, associated with lower outgassing. (OMI satellite measurements, GOME-2, OMP, and local mini-DOAS)

This decline was confirmed by a decrease in the thermal alerts (Mirova, Modvolc, Modis, etc.)

 
Volcan Wolf - gas plume observed in overvieuw on 05/29/2015 - photos : B. Bernard, IGEPN

Volcan Wolf - gas plume observed in overvieuw on 05/29/2015 - photos : B. Bernard, IGEPN

 Wolf - location of the eruptive fissure and lava flows - in blue, path of the overview - Doc. IGEPN

Wolf - location of the eruptive fissure and lava flows - in blue, path of the overview - Doc. IGEPN

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