Report on Karangetang (Indonesia) — December 1985
Scientific Event Alert Network Bulletin, vol. 10, no. 12 (December 1985)
Managing Editor: Lindsay McClelland.
Karangetang (Indonesia) Small gas plume in December
Please cite this report as:
Global Volcanism Program, 1985. Report on Karangetang (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 10:12. Smithsonian Institution.
2.781°N, 125.407°E; summit elev. 1797 m
All times are local (unless otherwise noted)
Api Siau was quiet during December with only a small gas plume continuing to be emitted.
Geological Summary. Karangetang (Api Siau) volcano lies at the northern end of the island of Siau, about 125 km NNE of the NE-most point of Sulawesi island. The stratovolcano contains five summit craters along a N-S line. It is one of Indonesia's most active volcanoes, with more than 40 eruptions recorded since 1675 and many additional small eruptions that were not documented in the historical record (Catalog of Active Volcanoes of the World: Neumann van Padang, 1951). Twentieth-century eruptions have included frequent explosive activity sometimes accompanied by pyroclastic flows and lahars. Lava dome growth has occurred in the summit craters; collapse of lava flow fronts have produced pyroclastic flows.
Information Contacts: Suparto S. and T. Casadevall, VSI.