Soputan volcano blows its top in strong, explosive eruption
January 2015 – INDONESIA – The volcano erupted this morning at 02:45 local time with a strong explosion from the summit lava dome. It sent an 6 km tall ash column to approx. 26,000 ft (8,5 km) altitude. The eruption followed an increase in seismic activity in December, when so-called “drumbeat” earthquakes appeared – a type of volcanic tremor typically associated with movements of viscous magma at shallow depths,- in this case new lava rising beneath the existing lava dome (in place since 1991). As a consequence, the alert status of the volcano had been raised to the second highest level “Siaga” (3 on a scale of 1-4, alert).
Today’s explosion caused parts of the summit dome that occupies the crater, open to the western flank, to collapse and produce a glowing avalanche that traveled approx. 2000 m, remaining within the volcano’s caldera. It seems that no pyroclastic flow (which…
View original post 42 more words