Volcanos

Roundup of Global Volcanic Activity

Raung (East Java): Over the last two weeks Raung has been spewing out lava fountains and explosions typical for Strombolian eruptions. During my visit there were many spectacular explosions, sometimes as frequent as occurring every 15 minutes. The loud detonation sounds and rumbling of the volcano could be heard up to 10-15 km away from the vent, as well as from Ijen crater. Harmonic tremors and regular gas venting are a steady occurrence and seem to indicate that Raung might be building up a dome similar to the one in 2012.

Colima (Western Mexico): The effusive activity seems to have stopped since there is no more dome building nor lava flows. Explosive activity has taken over instead: Colima erupts in irregular explosions (at intervals of 30mins to 7 hours) of small to moderately large size, emitted from two different vents in summit crater. Ash plumes are rising to max 2-3km and bombs thrown into the air are estimated to travel up to 800m high and land laterally up to 1.5 km away from the vent. Such large eruptions can furthermore last up to 2 minutes.