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Report on Lokon-Empung (Indonesia) — 26 August-1 September 2015


Lokon-Empung

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 26 August-1 September 2015
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2015. Report on Lokon-Empung (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 26 August-1 September 2015. Smithsonian Institution and US Geological Survey.

Weekly Report (26 August-1 September 2015)

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, PVMBG reported that on 30 August an ash plume rose from Lokon-Empung to an altitude of 3 km (10,000 ft) a.s.l. Ash was not identified in satellite images.

Geological Summary. The Lokong-Empung volcanic complex, rising above the plain of Tondano in North Sulawesi, includes four peaks and an active crater. Lokon, the highest peak, has a flat craterless top. The morphologically younger Empung cone 2 km NE has a 400-m-wide, 150-m-deep crater that erupted last in the 18th century. A ridge extending 3 km WNW from Lokon includes the Tatawiran and Tetempangan peaks. All eruptions since 1829 have originated from Tompaluan, a 150 x 250 m crater in the saddle between Lokon and Empung. These eruptions have primarily produced small-to-moderate ash plumes that sometimes damaged croplands and houses, but lava-dome growth and pyroclastic flows have also occurred.

Source: Darwin Volcanic Ash Advisory Centre (VAAC)