Report on Dukono (Indonesia) — 12 July-18 July 2023
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 12 July-18 July 2023
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2023. Report on Dukono (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 12 July-18 July 2023. Smithsonian Institution and US Geological Survey.
Dukono
Indonesia
1.6992°N, 127.8783°E; summit elev. 1273 m
All times are local (unless otherwise noted)
PVMBG reported that the eruption at Dukono was ongoing during 12-18 July. No ash plumes were reported by PVMBG on 12 July, but according to the Darwin VAAC an ash plume rose to 1.8 km (6,000 ft) a.s.l., or about 600 m above the summit, and drifted NE. White plumes rose as high as 200 m and drifted W on 13 July. Dense white-and-gray plumes rose as high as 400 m above the summit and drifted E during 14-16 July. The Alert Level remained at Level 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, have occurred since 1933. During a major eruption in 1550 CE, a lava flow filled in the strait between Halmahera and the N-flank Gunung Mamuya cone. 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.
Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Darwin Volcanic Ash Advisory Centre (VAAC)