The eruption of Mount Merapi in 2010 is greater than the eruption of the volcano more than 100 years ago or in 1872.
"If the index is measured by the eruption, the eruption in 2010 was greater than the Merapi eruption ever recorded in history, namely in 1872," said Chief Hall Kegunungapian Investigation and Technology Development (BPPTK) Subandriyo Yogyakarta in Yogyakarta, on Tuesday (9 / 11 / 2010).
According to him, one of the indicators used to determine the index of the eruption is from the amount of volcanic material that has been leveled.
At the eruption of 1872, the amount of volcanic material ejected by the eruption of Mount Merapi during the process of reaching 100 million cubic meters.
In the meantime, until now the amount of volcanic material that has been spewed out since the eruption of Mount Merapi on 26 October until now estimated to have reached about 140 million cubic meters of volcanic and seismic activity is not stopped.
"Most of the volcanic material that leads to Kali Gendol and are now part of the river has been filled by volcanic material," he said.
Therefore, the threat of lava flooding in a number of rivers that disgorge at Mount Merapi is still very possible to happen.
BPPTK try to do the monitoring of the air with aerial photographs. However, it still continues to conduct an analysis of the results of the photo.
"There are a few obstacles before the commencement of aerial photographs, the column of smoke was still thick enough to obstruct the view to see the peak of Merapi," he said.
Based on the results of the monitoring until at 12.00, still there was an earthquake tremor in a row that indicates a magma activity in the body of the mountain.
The Center for Volcanology and Geological Disaster Mitigation Surono said, there are a few volcanology and geological experts from foreign countries who want to help monitoring the activity of Merapi.
"We invited only. Merapi is a laboratory of the world so that anyone can conduct an investigation, let alone the Merapi eruption did not happen once a year," he said.
A number of volcanology and geology experts said foreign originated from Japan, the United States, and also France.
Meanwhile, the head of National Disaster Management Agency (BNPB) Syamsul Maarif appealed to people still follow government instructions to be on the safe radius of 20 kilometers (km) from the peak of Mount Merapi.
Moreover, people also asked not to move at a distance of 500 meters from each side of the river, especially the river that tipped at Mount Merapi, to avoid the danger of cold lava.
Based on data from BNPB, the number of victims who had died from the eruption of Mount Merapi, since 26 October has reached 151 people consisting of 135 people in the DIY and the 16 people in Central Java and the total reaches 320 090 displaced people.
Mount Merapi eruption also damaged 291 homes. A levee burst in the village of Ngepos due to overflowing of cold lava.
