Report on Sinabung (Indonesia) — 30 November-6 December 2016
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 30 November-6 December 2016
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2016. Report on Sinabung (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 30 November-6 December 2016. Smithsonian Institution and US Geological Survey.
3.17°N, 98.392°E; summit elev. 2460 m
All times are local (unless otherwise noted)
Based on satellite images, wind data, and the Jakarta MWO, the Darwin VAAC reported that on 30 November an ash plume from Sinabung rose to an altitude of 4.2 km (14,000 ft) a.s.l. and drifted SE. The report noted that the eruption had ceased and that the ash plume was expected to dissipate in the next hours.
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.