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Report on Dukono (Indonesia) — 15 November-21 November 2023


Dukono

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 15 November-21 November 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, 15 November-21 November 2023. Smithsonian Institution and US Geological Survey.

Weekly Report (15 November-21 November 2023)

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 15-21 November. Seismicity was high during most of the week but began to decline on 19 November, though eruptive activity remained elevated. Daily dense white-and-gray or gray-to-black ash plumes rose as high as 1.2 km above the summit during 15-16 November, up to 2.6 km on 17 November, 3 km on 18 November, 2.6 km on 19 November, and 2.3 km on 20 November. The plumes mainly drifted E and NE each day, though on 17 November they also drifted SE. Thumping noises were reported on 17 November. 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.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)