Report on Karangetang (Indonesia) — 1 November-7 November 2000
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
1 November-7 November 2000
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2000. Report on Karangetang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 1 November-7 November 2000. Smithsonian Institution and US Geological Survey.
2.781°N, 125.407°E; summit elev. 1797 m
All times are local (unless otherwise noted)
VSI reported that at 1131 on 27 October a small explosion at Karangetang sent ash to 1 km above the volcano. The ash cloud drifted E over the sea and ash flowed ~1.5 down the E, W, and S flanks of the volcano. The volcano is at Alert Level 2 out of 4.
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. 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 (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.