Report on Lokon-Empung (Indonesia) — 16 May-22 May 2001
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
16 May-22 May 2001
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2001. Report on Lokon-Empung (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 16 May-22 May 2001. Smithsonian Institution and US Geological Survey.
1.358°N, 124.792°E; summit elev. 1580 m
All times are local (unless otherwise noted)
An article in the Jakarta Post stated that an eruption at Lokon that began at 2014 on 20 May deposited ash in a wide area around the volcano, including the provincial capital of Manado, approximately 20 km NE of the volcano. They reported that ash rose up to 900 m above the volcano and that the eruption was accompanied by tremor.
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: The Jakarta Post