Merapi Energy Now Almost Same Period of Calm
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Head of Geological Agency R Sukhyar said, the energy stored in the eruption of Mount Merapi after non-stop on November 3 to 8 begin to decrease and is now almost equal to the quiet period at the end of October 2010.
"Currently, the energy possessed almost the same Merapi quiet period on 26 October to 3 November," said Sukhyar in Media Center National Disaster Management Agency (BNPB) in Yogyakarta, on Sunday.
According to him, the decline in the energy stored in the Mount Merapi has become one of the factors underlying the reduction in radius of the eruption of Mount Merapi disaster-prone in the four districts.
In addition to energy reduction, from satellite observations also showed that the content of sulfur dioxide (SO2) in the vicinity of Merapi began to decline, which means that the magmatic activity of Merapi was decreased.
He said that, while large-scale eruption occurred on November 5, the content of sulfur dioxide reached 120 kilotons, but then declined to 40 kilotons on 8 November and is now undetectable.
Geological Agency initially increase the radius of risk of the eruption of Mount Merapi on November 5 to 20 kilomete (km) for all districts in the vicinity of the volcano.
But since Sunday at 06.00 pm, the radius of hazardous eruption of Mount Merapi changed to three districts, namely Klaten and Boyolali to 10 km to 15 km and Magelang, Sleman was still maintained at a distance of 20km.
Radius safe for Sleman Regency is maintained at a distance of 20km because the morphology of Merapi has changed that is no crater at the summit which opens to the south and northwest. "Therefore, the radius prone to Magelang regency still farther than the district of Klaten and Boyolali," he said.
In Klaten district and Boyolali, he added, there are obstacles in the form of the river that makes the hot clouds sliding distance to the two districts are shorter than the Sleman and Magelang.
In addition, at the peak of Mount Merapi is also formed when lava domes and lava dome was destroyed, avalanches will be heading south and west due to the crater. "We will evaluate gradually addressing the development of the volcanic activity and did not rule out that the radius of Sleman also prone to be changed," he said.
Geological Agency also put together BNPB lava flow detectors in all the rivers that disgorge the Mount Merapi volcano as lava flooding remains a threat.
Rivers that disgorge at Mount Merapi is, Woro Kali, Kali Gendol, Kali Kuning, Boyong Kali, Kali Bedog, Krasak, Bebeng Kali, Kali Sat, Lamat Kali, Kali Senowo, Tringsing Kali, and Kali Apu.
Based on the volcanic activity monitoring report by the Center for Volcanology and Geological Hazard Mitigation (PVMBG), all the rivers that disgorge at Merapi volcano filled with lava deposits.
Source:nasional.tvone.co.id
"Currently, the energy possessed almost the same Merapi quiet period on 26 October to 3 November," said Sukhyar in Media Center National Disaster Management Agency (BNPB) in Yogyakarta, on Sunday.
According to him, the decline in the energy stored in the Mount Merapi has become one of the factors underlying the reduction in radius of the eruption of Mount Merapi disaster-prone in the four districts.
In addition to energy reduction, from satellite observations also showed that the content of sulfur dioxide (SO2) in the vicinity of Merapi began to decline, which means that the magmatic activity of Merapi was decreased.
He said that, while large-scale eruption occurred on November 5, the content of sulfur dioxide reached 120 kilotons, but then declined to 40 kilotons on 8 November and is now undetectable.
Geological Agency initially increase the radius of risk of the eruption of Mount Merapi on November 5 to 20 kilomete (km) for all districts in the vicinity of the volcano.
But since Sunday at 06.00 pm, the radius of hazardous eruption of Mount Merapi changed to three districts, namely Klaten and Boyolali to 10 km to 15 km and Magelang, Sleman was still maintained at a distance of 20km.
Radius safe for Sleman Regency is maintained at a distance of 20km because the morphology of Merapi has changed that is no crater at the summit which opens to the south and northwest. "Therefore, the radius prone to Magelang regency still farther than the district of Klaten and Boyolali," he said.
In Klaten district and Boyolali, he added, there are obstacles in the form of the river that makes the hot clouds sliding distance to the two districts are shorter than the Sleman and Magelang.
In addition, at the peak of Mount Merapi is also formed when lava domes and lava dome was destroyed, avalanches will be heading south and west due to the crater. "We will evaluate gradually addressing the development of the volcanic activity and did not rule out that the radius of Sleman also prone to be changed," he said.
Geological Agency also put together BNPB lava flow detectors in all the rivers that disgorge the Mount Merapi volcano as lava flooding remains a threat.
Rivers that disgorge at Mount Merapi is, Woro Kali, Kali Gendol, Kali Kuning, Boyong Kali, Kali Bedog, Krasak, Bebeng Kali, Kali Sat, Lamat Kali, Kali Senowo, Tringsing Kali, and Kali Apu.
Based on the volcanic activity monitoring report by the Center for Volcanology and Geological Hazard Mitigation (PVMBG), all the rivers that disgorge at Merapi volcano filled with lava deposits.
Source:nasional.tvone.co.id
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