Active volcanoes / Aktive vulkaner:

Dukono, Indonesia    

© Vivianne Clavel, 1991

Dukono is currently one of Indonesia's most active volcanoes. Dukono is a complex volcano
presenting a broad, low profile with multiple summit peaks and overlapping craters.
Malupang Wariang, 1 km SW of Dukono's summit crater complex, contains a 700 x 570 m
crater that has also been active during historical time.

From /

Dukono is a 1087 m high stratovolcano also known as Dokoko, Dodoekko, Dukoma, Tala
or Tolo. The activity of Dukono is implied by solfatara/fumarola activity at several craters at the
summit area. Malupang-Warirang is the most active crater at Dukono vulkanic complex.
This crater is located at the summit of Kariang which is one of the volcano of Dukono complex
. Kariang volcano (1245 m) is surrounded by several volcanic cone that have almost the same
height. At the western part, there is Togohi volcano (1233 m) and Kua volcano (1885 m)
which are member of Tobelo volcanic range. This volcanic range lies along the northernpart
area until Papilo. At the northern part there is Mamuya Volcano (750 m) and Tarakan Volcano
(500 m) which have dormant craters

Their flank and valley is formed by product of the eruption that mostly consist of sand, tuff
and andesitic lava of Dukono. In historical time, Dukono frequently borne explosive as well as
effusive kind of eruption.Reports from this remote volcano in northernmost Halmahera are rare, but more or less
continuous explosive eruptions, sometimes accompanied by lava flows, have occurred since 1933.
During a major eruption in 1550, a lava flow filled in the strait between Halmahera and the
northflank cone of Gunung Mamuya.

Thursday, December 22nd, 2011

Eruption from Dukono volcano on 21 Dec 2011
Photo: Andi / VolcanoDiscovery Indonesia

Dukono volcano in Halmahera Island continues to produce ash explosions with plumes rising up to 1 km above
the crater. Eruptions are following each other in intervals of 5-15 minutes and there are frequent small tremors.

Friday September 3rd, 2010
Based on analyses of satellite imagery, the Darwin VAAC reported that during 25-29 August ash plumes from
Dukono rose to altitudes of 2.1-3 km (7,000-10,000 ft) a.s.l. and drifted 35-110 km W and NE.

November 21st, 2003
During 12-18 November, ash plumes continued to be emitted from Dukono.
Plumes rose to ~3 km a.s.l. and extended a maximum distance of ~300 km to the NE.

August 18th, 2003
Plumes from ash emissions at Dukono were visible on satellite imagery on 16 and 18 August,
rising ~3 km a.s.l. and extending ~55 km NW of the volcano on the 16th,
and rising ~4.3 km a.s.l and extending ~130 km a.s.l. W on the 18th.

June 13th, 2003

As of the 12th of June, the Darwin VAAC reported that an ash plume from Dukono was visible
on satellite imagery beginning on 8 June at 1625. The ash plume was at a height of ~4.5 km a.s.l.
and drifted NE. As of 10 June a plume was visible extending ~75 km towards the N.  .


Volcanologists visited the volcano in 1978 and 1979. On the first visit, bombs as long as 4 m
were being thrown as far as 250 m from the vent. An ash cloud rose up to 10 km above the
crater. Ash was blown as far away as 15 km. Quiet periods lasting 6-8 hours were reported.
On the second visit, explosive ejection of ash was observed.

Bilder og tekst denne side: Photo and text this page: partly from
Kimberly, P., Siebert, L., Luhr, J.F., and Simkin, T. (1998). Volcanoes of Indonesia, v. 1.0 (CD-ROM).
Smithsonian Institution, Global Volcanism Program, Digital Information Series, GVP-1.

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