Mt. Dempo spews, on alert status
The Jakarta Post , National | Sun, 01/04/2009 6:56 PM | National
The Volcanology and Geological Disaster Relief agency in Bandung announced Sunday Mt. Dempo in Pagar Alam, South Sumatra, has been placed on alert status following increased volcanic activity.
“There has been a phreatic explosion recorded,” agency head Surono said, as quoted by
tempointeraktif.com.
Phreatic eruptions occur when cold groundwater or surface water comes into contact with hot rock or magma. The resultant steam is released as an eruption.
Surono said the eruption occurred Jan. 1 at 10:51 a.m.. An explosion of water, mud and ashes sent hikers, who were celebrating New Year's Eve on nearby hills, running, leaving their belongings behind. Ash fell up to 10 kilometers from the volcano.
Mt. Dempo is a stratovolcano that rises 3,159 meters above the sea level. Seven craters mark its summit. A 400-meter-wide lake at the northwest end of the crater complex holds about 80 million cubic meters of water. (dre)