The eruption, now over 4 weeks old, continues with no significant changes. Strong lava effusion inside the summit caldera is accompanied by near-constant ash emissions rising 1-2 km and drifting up to 100-200 km in mostly westerly directions.
Based on observational data from PVMBG, the volcano emits a thick gray smoke, medium pressure, from a height of about 2,000 meters to the south – east. Volcanic tremor remains at a constant amplitude with a dominant at 27-29 mm. Energy is likely to increase through a new magma supply. But the type of eruption has not changed, still erupting continuously without a break with the Strombolian type.
July 29, 2015. Raung , Indonesie :
Source : T Pfeiffer. BNPB
Photo : Oystein Lund Andersen