Report on Dukono (Indonesia) — 9 November-15 November 2022
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 9 November-15 November 2022
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2022. Report on Dukono (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 9 November-15 November 2022. Smithsonian Institution and US Geological Survey.
1.693°N, 127.894°E; summit elev. 1229 m
All times are local (unless otherwise noted)
PVMBG reported that daily white-and-gray gas-and-steam plumes from Dukono rose as high as 800 m above the summit and drifted NE, E, and S during 9-15 November. The Darwin VAAC reported a continuous ash plume that rose to 2.1 km altitude and extended E on 11 November, based on satellite imagery. A discrete ash plume on 14 November rose to 10.7 km altitude and drifted SW. In addition, a strong hotspot and sulfur dioxide signal was observed in satellite imagery. On the same day, a continuous ash plume rose to 2.1-2.4 km altitude and drifted NE, which persisted through 15 November. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.
Geological Summary. Reports from this remote volcano in northernmost Halmahera are rare, but Dukono has been one of Indonesia's most active volcanoes. More-or-less continuous explosive eruptions, sometimes accompanied by lava flows, occurred from 1933 until at least the mid-1990s, when routine observations were curtailed. During a major eruption in 1550, a lava flow filled in the strait between Halmahera and the north-flank cone of Gunung Mamuya. This complex volcano presents a broad, low profile with multiple summit peaks and overlapping craters. Malupang Wariang, 1 km SW of the summit crater complex, contains a 700 x 570 m crater that has also been active during historical time.