Le niveau d'alerte à Dieng a été élevé d'un cran supplémentaire et est passé hier à Siaga (niveau 3 sur 4, ou encore alerte orange). Des changements ont été observés, le plus spectaculaire étant le passage du lac Sileri à la couleur chocolat,, le 24 mars. Par ailleurs, tout au long du mois de mars la concentration en CO2 au niveau du cratère Timbang (dans un rayon de 500 m) a fortement augmenté, passant de 0.01% (en volume) début mars, à 2.5% entre le 11 et 15 mars. ...
During 7-11 March monitoring instruments detected carbon dioxide plumes from Timbang Crater drifting 50-200 m S; the concentration increased during 9-10 March. A strong sulfur odor was also reported, along with dead animals near the crater on 7 March. ...
[cacher] A phreatic explosion occurred at Sileri crater on 27 September 2009. The explosion was preceded by several earthquakes in the perios of 1-23 September, 4 deep and 2 shallow volcanic earthquakes. On 26 Sep, a thunderous noise was suddenly heard from Dieng up to 2 km away. On 27 Sep, a second(?) eruption happened. The eruptions ejected mud as far away as 140 m and left a deposit of 10 cm thickness near the vent. No unusual concentrations of poisonous gasses in the erea were detected.
The alert level at the volcano remains at level I (normal). However, people are advised to stay at least 500 m away from Sileri, Sinila, Timbang, Siglagah and Sikidang craters.
January 2009 eruption - landslide and phreatic explosion
A small phreatic eruption occured on 16 Jan 2009 at Sibateng crater.
[cacher] After three days of heavy rain, one or more landslides were triggered at Sibanteng crater on 15 January 2009. The debris covered the crater floor and sealed the vent. On 16 January, at 08h30, a sudden small phreatic eruption took place excavating a small crater 50 m in diameter. The alert at Dieng volcano was raised from level I to level II (out of 4).
1992 gas eruption
A sudden gas emissions ocurred at 16h00 on 18 March 1992. One person was killed by CO2 in a river valles 200 m W of Sikidang Crater, and two people trying to rescue him had to be hospitalized.
1979 eruption - deadly gas emissions
The last eruption at Dieng causing a large number of fatalities happened on 20 February 1979. Large gas emissions (CO2, most likely, or H2S) occured along with at least two phreatic eruptions from Sinila and Sigludung craters. At least 149 people were killed, when they fled the explosions and were cought in the deadly gas cloud. Many hundreds were severely injured.
Around 15,000 people were evacuated from six villages near Sinila. Fish and livestock were killed by the eruption. The eruption had been preceded by at least 3 felt earthquakes.
An eruption in 1964 caused 114 deaths.
An explosion occurred from Kawah Sileri crater during the night of 4 Dec 1944. The powerful explosion occured in darkness and showered rocks and boiling mud over parts of the villages Kepakisan, Sekalem, Sidolok, Pagerkandang, Djawera and Kepakisanlor. in complete darkness. Some blocks were thrown up to 1 km distance from the vent. An estimated 117 people people were killed, and more than 200 severely injured by ballistic impact and burns from boiling mud.
A violent phreatic eruption happened at Dieng volcano on 13th October 1939 near the northern side of the Chinese cementary. Hot mud erupted from a new fissure. Activity ended on 3 November 1939.
A phreatic explosion in 1928 near Timpang killed about 40 people, one by a falling block.
Eruptions in 1826 and 1827
The eruptions in 1826 and 1827 caused several fatalities.
Fissures opened in the ground and destroyed the village of Jamping killing 38 people.
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