Report on Dukono (Indonesia) — June 1993
Bulletin of the Global Volcanism Network, vol. 18, no. 6 (June 1993)
Managing Editor: Edward Venzke.
Dukono (Indonesia) White to light-gray ash cloud reaches 600-1,500 m
Please cite this report as:
Global Volcanism Program, 1993. Report on Dukono (Indonesia). In: Venzke, E (ed.), Bulletin of the Global Volcanism Network, 18:6. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.BGVN199306-268010.
1.693°N, 127.894°E; summit elev. 1229 m
All times are local (unless otherwise noted)
A very dense white to light-gray ash cloud from Dukono was reported on 23 June by a commercial aircraft pilot. The cloud was rising ~600-1,500 m above the summit . . . . VSI notes that Dukono is very active, with small eruptions from the main crater almost every day. The height of the eruption column averages 300-600 m above the crater rim. No significant changes in activity have occurred in June or July.
Geologic Background. 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.
Information Contacts: ICAO; W. Tjetjep, VSI.