Volcanic News: Sinabung, Cotopaxi, Wolf

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

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.

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.)