Report on Sinabung (Indonesia) — 10 June-16 June 2015
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 10 June-16 June 2015
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2015. Report on Sinabung (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 10 June-16 June 2015. Smithsonian Institution and US Geological Survey.
3.17°N, 98.392°E; summit elev. 2460 m
All times are local (unless otherwise noted)
BNPB reported that activity at Sinabung remained high. On 13 June six eruptions generated ash plumes that rose 1-2 km high and pyroclastic flows that traveled as far as 3 km SE. At 2140 about 200 people from Sukanalu village were ordered to evacuate. The report noted that 2,053 families (6,179 people) had been living in temporary shelters since June 2014. The Alert Level remained at 4 (on a scale of 1-4).
Geologic Background. Gunung Sinabung is a Pleistocene-to-Holocene stratovolcano with many lava flows on its flanks. The migration of summit vents along a N-S line gives the summit crater complex an elongated form. The youngest crater of this conical andesitic-to-dacitic edifice is at the southern end of the four overlapping summit craters. An unconfirmed eruption was noted in 1881, and solfataric activity was seen at the summit and upper flanks in 1912. No confirmed historical eruptions were recorded prior to explosive eruptions during August-September 2010 that produced ash plumes to 5 km above the summit.