Logo link to homepage

Report on Lokon-Empung (Indonesia) — 28 November-4 December 2012

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 28 November-4 December 2012
Managing Editor: Sally Kuhn Sennert

Please cite this report as:

Global Volcanism Program, 2012. Report on Lokon-Empung (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 28 November-4 December 2012. Smithsonian Institution and US Geological Survey.

Volcano Profile |  Weekly Report (28 November-4 December 2012)


Lokon-Empung

Indonesia

1.358°N, 124.792°E; summit elev. 1580 m

All times are local (unless otherwise noted)


According to the Darwin VAAC, CVGHM reported that an eruption from Lokon-Empung produced an ash plume that rose to an altitude of 4.9 km (16,000 ft) a.s.l. on 28 November. Ash was not detected in satellite imagery.

Geologic Background. The twin volcanoes Lokon and Empung, rising about 800 m above the plain of Tondano, are among the most active volcanoes of Sulawesi. Lokon, the higher of the two peaks (whose summits are only 2 km apart), has a flat, craterless top. The morphologically younger Empung volcano to the NE has a 400-m-wide, 150-m-deep crater that erupted last in the 18th century, but all subsequent eruptions have originated from Tompaluan, a 150 x 250 m wide double crater situated in the saddle between the two peaks. Historical eruptions have primarily produced small-to-moderate ash plumes that have occasionally damaged croplands and houses, but lava-dome growth and pyroclastic flows have also occurred. A ridge extending WNW from Lokon includes Tatawiran and Tetempangan peak, 3 km away.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)