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Information may change rapidly as the event progresses. | Mount Merapi is a conical volcano in Central Java, Indonesia. It is the most active volcano in Indonesia and has erupted 68 times since 1548. Its name means Mountain of Fire. It is very close to the city of Yogyakarta, and thousands of people live on the flanks of the volcano, with villages as high as 1700 m above sea level. Wikipedia does not have an article with this exact name. ...
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Image File history File links Merapi. ...
A topographical summit is a point on a surface which is higher in elevation than all points immediately adjacent to it. ...
Map of Central Java province within Indonesia Central Java (Indonesian: Jawa Tengah) is a province of Indonesia. ...
Map of Earth showing lines of latitude (horizontally) and longitude (vertically); large version (pdf) The geographic (earth-mapping) coordinate system expresses every horizontal position on Earth by two of the three coordinates of a spherical coordinate system which is aligned with the spin axis of the Earth. ...
Mountains can be characterized in several ways. ...
A stratovolcano is a tall, conical mountain (volcano) composed of both hardened lava and volcanic ash. ...
// The geological time scale is used by geologists and other scientists to describe the timing and relationships between events that have occurred during the history of the Earth. ...
A volcano is a geological landform usually generated by the eruption through a planets surface of magma, molten rock welling up from the planets interior. ...
2006 (MMVI) is a common year starting on Sunday of the Gregorian calendar. ...
A volcano is a geological landform usually generated by the eruption through a planets surface of magma, molten rock welling up from the planets interior. ...
Map of Central Java province within Indonesia Central Java (Indonesian: Jawa Tengah) is a province of Indonesia. ...
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Yogyakarta, Indonesia Yogyakarta (also Jogjakarta or Jogja) is a city and province on the island of Java, Indonesia. ...
For considerations of sea level change, in particular rise associated with possible global warming, see sea level rise. ...
Several of its eruptions have caused fatalities. It was erupting from 1992 to 2002, and a particularly large explosion killed 43 people in 1994. It began erupting again in 2006, and scientists believe a large eruption is imminent. In light of the hazards it poses to populated areas, it has been designated a Decade Volcano. A map showing locations of the 16 Decade Volcanoes The Decade Volcanoes are 16 volcanoes identified by the International Association of Volcanology and Chemistry of the Earths Interior (IAVCEI) as being worthy of particular study in light of their history of large, destructive eruptions and proximity to populated areas. ...
1992 eruption
 Mount Merapi in August 2003 showing steam venting from the caldera. Image courtesy of the Image Science & Analysis Laboratory, NASA Johnson Space Center 1992 saw an eruption begin at Mount Merapi which continued for the next ten years. During this time, a lava dome was extruded, growing by up to half a metre per day. In 1994, the dome reached the edge of the crater, and from then on, rockfall from the dome produced frequent pyroclastic flows. In late 1994 almost the entire dome collapsed, generating very large pyroclastic flows, which travelled several kilometres from the summit and killed 43 people. Image File history File links MerapiFromSpace. ...
Image File history File links MerapiFromSpace. ...
1992 (MCMXCII) was a leap year starting on Wednesday. ...
In volcanology, a lava dome is mound-shaped growth resulting from the eruption of high-silica lava (such as rhyolite) from a volcano. ...
1994 (MCMXCIV) was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ...
Perhaps the most conspicuous part of a volcano is the crater, a basin of a roughly circular form within which occurs a vent (or vents) from which magma erupts as gases, lava, and ejecta. ...
Following the large eruption of November 1994, a new dome formed in the crater, and small explosive eruptions continued for several years, generating scores of lava avalanches and pyroclastic flows every day. Eruptions ended in late 2002. For the Cusco album, see 2002 (album). ...
2006 eruption Wikinews has news related to: Merapi roars, compulsory evacuation ordered In April 2006, increased seismicity at more regular intervals and a detected bulge in the volcano's cone indicated that fresh eruptions were imminent. Authorities put the volcano's neighboring villages on high alert and local residents prepared for a likely evacuation. On April 19th smoke from the crater reached a height of 400 metres, compared to 75 metres the previous day. On April 23rd, after nine surface tremors and some 156 multifaced quakes signalled movements of magma, some 600 elderly and infant residents of the slopes were evacuated, their places partly taken by tourists drawn to the area. [1] Image File history File links Wikinews-logo. ...
Wikinews is a free-content news source and a project of the Wikimedia Foundation. ...
Seismology (from the Greek seismos = earthquake and logos = word) is the scientific study of earthquakes and the movement of waves through the Earth. ...
By early May, active lava flows had begun. On May 11th, with lava flow beginning to be constant, some 17,000 people were ordered to be evacuated from the area [2] and on May 13th, Indonesian authorities raised the alert status to the highest level, red, ordering the immediate evacuation of all residents on the mountain. [3] Eruptions at the volcano are increasing in intensity, and some reports indicate that large explosions have begun [4] [5]. Should pyroclastic flows occur, nearby villages will be at very high risk, but many villagers have defied the dangers posed by the volcano and returned to their villages, saying that they needed to tend their live-stock and crops. [6] Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 1984 Pyroclastic flows are a common and devastating result of some volcanic eruptions. ...
Monitoring Merapi is the site of a very active volcano monitoring program. Seismic monitoring began in 1924, and the eruption of 1930 was found to have been preceded by a large earthquake swarm. There is currently a network of 8 seismographs around the mountain, allowing volcanologists to accurately pinpoint the hypocentres of tremors and quakes. A zone in which no quakes originate is found about 1.5 km below the summit, and is thought to be the location of the magma reservoir which feeds the eruptions. Seismology (from the Greek seismos = earthquake and logos = word) is the scientific study of earthquakes and the movement of waves through the Earth. ...
1924 (MCMXXIV) was a leap year starting on Tuesday (link will take you to calendar). ...
1930 (MCMXXX) is a common year starting on Wednesday. ...
Seismographs (in Greek seismos = earthquake and graphein = write) are used by seismologists to record seismic waves. ...
The hypocenter or hypocentre (literally: below the center from the Greek υπόκεντρον), also known as the focus, is the point inside the Earth where an earthquake originates. ...
A magma chamber is a chamber typically between 1 km and 10 km beneath the surface of the Earth formed as rising magma forms a reservoir if it is unable to rise any further. ...
Other measurements taken on the volcano include magnetic measurements and tilt measurements. Small changes in the local magnetic field have been found to coincide with eruptions, and tilt measurements reveal the inflation of the volcano caused when the magma chamber beneath it is filling up. In physics, magnetism is one of the phenomena by which materials exert an attractive or repulsive force on other materials. ...
Lahars (a type of mudflow of pyroclastic material and water) are an important hazard on the mountain, and are caused by rain remobilizing pyroclastic flow deposits. Lahars can be detected seismically, as they cause a high-frequency seismic signal. Observations have found that about 50 mm of rain per hour is the threshold above which lahars are often generated. Lahar from a March 1982 eruption of Mount St. ...
This article is geological phenomenon; a mudslide is also an alcoholic drink. ...
Rain falling For other uses see Rain (disambiguation). ...
Sine waves of various frequencies; the lower waves have higher frequencies than those above. ...
References - ^ Mail & Guardian online, 23 April 2006
- ^ Lava flows from Indonesia volcano. BBC News, May 4 2006 URL Accessed 2006-05-13
- ^ Red alert for Indonesia volcano. BBC News, May 13 2006 URL Accessed 2006-05-13
- ^ Mount Merapi Erupts, ANTARA News, 15 May 2006
- ^ Indonesia's Merapi volcano spews steam, hot ash, Reuters, 15 May 2006
- ^ Merapi villages defy orders to leave homes: The Straits Times
- Decker, R. and Decker, B. (1997) Volcanoes, 3rd edition, WH Freeman, New York.
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