Roundup of Global Volcanic Activity:
Stromboli (Eolian Islands, Italy): Activity has picked up during the past week. During a visit yesterday afternoon and evening, we observed frequent and often strong strombolian eruptions from the NW vent (Ginostra side), which had enlarged a lot since early this year. Explosions occurred at 5-10 minutes intervals and produced spatter-rich jets to heights to 200-300 m. Glow from the vent and weak spattering indicates that the magma column inside the western vent has risen high.
Sinabung (Sumatra, Indonesia): A new phase of explosive eruptions began Wednesday afternoon at around 16:20 local time and intensified yesterday morning between 6 and 8 am. An ash plume rose about 3 km from the volcano.