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Report on Dukono (Indonesia) — 30 January-5 February 2019


Dukono

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 30 January-5 February 2019
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2019. Report on Dukono (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 30 January-5 February 2019. Smithsonian Institution and US Geological Survey.

Weekly Report (30 January-5 February 2019)

Dukono

Indonesia

1.6992°N, 127.8783°E; summit elev. 1273 m

All times are local (unless otherwise noted)


Based on satellite data, wind model data, and notices from PVMBG, the Darwin VAAC reported that on 28 January an ash plume from Dukono rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted SE. During 3-5 February ash plumes rose to 2.1 km (7,000 ft) a.s.l. and drifted S, SW, W, and NW. The Alert Level remained at 2 (on a scale of 1-4), and visitors were 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: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)