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Report on Karangetang (Indonesia) — 13 February-19 February 2002

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 13 February-19 February 2002
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2002. Report on Karangetang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 13 February-19 February 2002. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (13 February-19 February 2002)


Karangetang

Indonesia

2.781°N, 125.407°E; summit elev. 1797 m

All times are local (unless otherwise noted)


An explosion at Karangetang on 11 February produced an ash cloud and lava flows. The ash cloud drifted to the WSW, depositing 0.5-1 mm of ash in the villages of Kanawong, Lehi, Mimi, Kinali, and Pehe. Incandescent lava flows traveled as far as 1-1.5 km to the W down the Beha River and E down the Kahetang River. Seismicity decreased at the volcano in comparison to the previous week and a "red reflection" was visible at night reaching 25 m above the volcano. Karangetang remained at Alert Level 2 (on a scale of 1-4).

Geologic Background. 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.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)