Most of indonesia volcanoes are in flux most active one being Mount merapi is located in the North of yogyakarta. The northern part of the crater has a high wall so that in eruptions the lava will flow to the west, south and east, threatening the regions of Muntilan. Yogyakarta and Surakarta. The hot lava will slowly cool off into what is called lahar In the rainy season, when the cold ‘lahar’ on mt Merapi’s slopes is hit by rain, it will flow down the slopes with great force destroying everything in its path. The rainwater falling on Mount Merapi cannot be absorbed by the soil because the pores in the soil have been filled up with ash. The flow of ‘lahar’ mixed with rocks is dangerous for the rivers and the countryside. The rivers become filled up and the fields are covered with sand. Kaligesik, the highest village on mt Merapi’s slope; has been swept away. The country side looks like a sea of sand with islands of rocks hers; there The village people have moved away and no animal can be seen.
Indonesia volcano and other volcanoes in the world are mountain surrounding an opening in the earth’s crust. Steam, lava, gases, ashes, etc. are forced out almost continuously from an active volcano. A dormant volcano is a little different. The steam, lava, gases, ashes, etc. are forced out at long intervals. In an extinct volcano, the opening or crater has long been closed up with cold, solid lava, etc. There is no heat left.
Our planet was a sphere of gases which slowly cooled off from the outside, forming a thin crust of cold, solid materials, containing gases and hot liquid magmas It was the very high pressure of the gases that forced the magma through a weak part in the earth’s crust and formed a volcano
Indonesia Volcano Facts
One fact the massive eruption is Krakatau Volkano Indonesia. Vulcano Eruptions of sea volcanoes cause high waves, which flood regions on the coasts. This happened when Krakatau erupted in 1833. The sound of the eruption was heard from places as far away as India, Papua and Australia, distances of from 3,600 to 4,800 km. from Krakatau. It was estimated that 18 cubic km. of solid materials were thrown up. Ashes darkened the sky so that ships on the Java Sea had to stop sailing. They also darkened the sun and the moon above the Southern Pacific, Africa and South America. Thirty-meter high waves flooded the coasts of West Java and Lampung, sweeping away villages and 35,000 people.
Volcanic eruptions cause disaster as the one described above. Hot materials that are thrown up destroy all life in their path. Hot lava, when cooled off, turn into cold ‘lahar’, which becomes dangerous when it rains. Eruptions are accompanied by earthquakes, sometimes very destructive, as when Mount Agung erupted in 1963.
15 numbers volcano indonesia need to look out for. The mountain is A type mountain-eruption at least once and for ever after the 1600 year. While the mountain B type is a mountain after 1600 no longer erupts. Mount C type is a volcanic eruption in human history is unknown, or there is no record of eruption.
the following list of 15 Indonesia volcanoes were on alert:
- Mt Sinabung (Karo, North of Sumatra)
- Mt Talang (Solok, West ofSumatra)
- Mt Kaba (Bengkulu)
- Mt Kerinci (Jambi)
- Mt Anak Krakatau (Lampung)
- Mt Papandayan (Garut, West java)
- Mt Slamet (Jateng)
- Mt Bromo (Jatim)
- Mt Semeru (Lumajang, East Java)
- Mt Batur (Bali)
- Mt Rinjani (Lombok, NTB)
- Mt Sangeang Api (Bima, NTB)
- Mt Rokatenda (Flores, NTT)
- Mt Egon (Sikka, NTT)
- Mt Dukono (Halmahera Utara, North of Maluku)
Indonesian National Board for Disaster Management (Indonesian: Badan Nasional Penanggulangan Bencana-BPNP) along with The Disaster Managemet Areas as the preparation of contingency plans in the face of the threat of outbreaks of 15 numbers Indonesia volcano in some areas