Friday, February 12, 2016

Eruption Period of Dukono

Dukono is one of the most active volcano in Indonesia. This Volcano has almost regular explosive eruptions, and sometimes lava flows.  There are several craters at the complex of the volcano. They are Tanah Lapang, Dilekene A, Dikekene B, Malupang Magiwe, Telori, Crater E, and Heneowara crater. There are not many tour operators can do the volcano tour here because of the very strike regulations.
Here is the eruptions that ever recorded:
2012 Earthquake and Eruptions
A magnitude 4.8 earthquake hit 4 km NNW of Dukono volcano on 3rd February 2012. The focus depth was 208 km. During January 2012 eruptions of Dukono sent ash plumes to 9000 ft altitude. Ash emissions were reported between January and June 2012.
2008 Eruptions
Dukono was upgraded to level 3 alert on 30th May 2008 after an increase in eruption earthquakes from 32/day to 280/day. On 25th May, ash emissions reached 800 m above the crater, and booming noises were heard coming from the summit. Ash emissions reached 1000 m above the summit on 29th May. The volcano was on alert level 2 between January 2002 and May 2008.
1991 Eruptions
An eruption began on 8-9th June 1991. Explosions occurred every 5 minutes and ashfall occurred on the coast 15 km ENE of the summit at the towns of Galela, Mamoya, and Tobelo. The eruptions were accompanied by noise, crater glow, and small lahars.
1978 Eruptions
Larger than normal eruptions were observed at Dukono volcano between 20-25th July 1978. Explosions occurred every 10 seconds and bombs were ejected 250 m from the crater rim. On 21st July, ash drifted north beyond the town of Galela, 15 km from the volcano.
1946 Eruptions
During the ash-eruptions of July-August 1946 several villages were covered by an ash-layer of 5-8 cm. The wind carried the ashes also to the airport on Morotal. The total ash production of 1946 was 1.5 million cubic metres.
1933 Eruption
On the night of 12-13 August 1933 eruptions began at Dukono volcano. A glow was noticed from Mamoeju on the bay of Galela. Explosions every 2-3 minutes were accompanied by heavy rumbling. Earthquakes were felt 15 km from the volcano.
1550 Eruption
In 1550 an eruption of Dukono (called Tolo after the city with that name) caused great damage in its environs.