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| Merapi (2010 eruption) | |
|---|---|
| Name | Mount Merapi (2010 eruption) |
| Elevation m | 2911 |
| Location | Central Java, Indonesia |
| Coordinates | 7°32′S 110°26′E |
| Type | Stratovolcano |
| Last eruption | 2010 |
Merapi (2010 eruption) The 2010 eruption of Mount Merapi, a stratovolcano on the border of Central Java and Yogyakarta Special Region, produced a major explosive event with pyroclastic density currents, ashfall, and lahars that affected large parts of Java (island), Indonesia, and neighboring nations. The event drew rapid response from institutions including the Indonesian National Board for Disaster Management, the Volcanological Survey of Indonesia (PVMBG), and international bodies such as the United Nations and International Red Cross and Red Crescent Movement. Scientists from the United States Geological Survey, Japan Meteorological Agency, and numerous universities mobilized to study the eruption's dynamics, hazards, and aftermath.
Mount Merapi is one of the most active and hazardous volcanoes in Indonesia, located near population centers such as Yogyakarta, Sleman Regency, Magelang Regency, and Kaliurang. The stratovolcano has a history of frequent eruptions including notable events in 1872, 1930, and 1994, with a persistent lava dome growth and collapse cycle documented by researchers from Gadjah Mada University, Institut Teknologi Bandung, and the University of Tokyo. The region's cultural landscape includes links to the Sultanate of Yogyakarta, Borobudur, and agricultural districts surrounding the Opak River and Progo River, where volcanic soils support rice paddies managed under local adat systems. Prior to 2010, monitoring employed seismographs, tiltmeters, gas sensors, and satellite assets such as MODIS and Aqua (satellite) to track unrest.
Initial signs of unrest in late 2010 included increased seismicity recorded by the Volcanological Survey of Indonesia (PVMBG) and reported by staff at the Observatorium Merapi near Kaliurang. On 26 October 2010 a significant explosive eruption generated pyroclastic flows and ash plumes observed by crews from the Angkatan Udara Republik Indonesia and journalists from outlets like Kompas and The Jakarta Post. Subsequent major explosions on 5 November 2010 produced hot cloud avalanches that devastated areas on the volcano's southern and southwestern flanks, triggering emergency alerts from the Indonesian Meteorological, Climatological, and Geophysical Agency (BMKG) and international aviation warnings from the International Civil Aviation Organization (ICAO). Over the following weeks, episodic dome growth, collapse events, and lahars continued through December, with satellite imagery from Landsat and ASTER documenting deposit extents.
Pyroclastic density currents, ballistic projectiles, and heavy ashfall caused widespread destruction across Sleman Regency, Magelang, Boyolali Regency, and Kebumen Regency. Casualty figures included hundreds of fatalities among residents and rescue personnel, with notable losses among staff from the Center for Volcanology and Geological Hazard Mitigation (CVGHM) and journalists covering the eruption. Infrastructure damage affected hospitals such as RSUP Sardjito, schools in Yogyakarta City, and transportation routes including Yogyakarta International Airport (temporary disruptions) and rail lines serving Semarang. Agricultural losses hit farmers near the Opak River and Kaliurang foothills; cultural heritage sites and temples in the broader Prambanan area faced ash-related impacts. International humanitarian organizations including UNICEF, World Food Programme, and Médecins Sans Frontières provided aid to refugees sheltered in facilities run by Indonesian Red Cross and local NGOs.
The 2010 activity highlighted primary hazards: pyroclastic flows, ashfall, lahars triggered by seasonal rains, ballistic impacts, and volcanic gas emissions including sulfur dioxide measured by teams from NOAA and European Space Agency. Monitoring techniques integrated ground-based seismic networks maintained by PVMBG and tiltmeters installed by researchers from Leiden University and Australian National University, with gas flux measured using COSPEC and DOAS systems developed by groups at University of Manchester and University of Tokyo. Remote sensing used instruments on Terra (satellite), Aqua (satellite), and Sentinel-2 to map ash dispersion collaborated with NASA and European Centre for Medium-Range Weather Forecasts (ECMWF) for plume modeling. Hazard maps produced by the Ministry of Energy and Mineral Resources (Indonesia) guided exclusion zones.
Evacuations were coordinated by the Indonesian National Board for Disaster Management (BNPB), local regencies, and the Sultanate of Yogyakarta administration, moving tens of thousands of residents to centers managed by the Ministry of Social Affairs (Indonesia) and community organizations like Nahdlatul Ulama and Muhammadiyah. International assistance came via the United Nations Office for the Coordination of Humanitarian Affairs (OCHA) and bilateral support from countries including Australia, Japan, and United States. Search and rescue operations involved the Indonesian National Armed Forces (TNI), Indonesian National Police, and volunteer networks coordinated through platforms such as Palang Merah Indonesia. Challenges included communication among agencies, logistics on damaged roads near Selo (village), and health risks managed by teams from the World Health Organization.
Recovery involved reconstruction of housing in regencies such as Sleman and Magelang, rehabilitation of irrigated rice systems serving communities near the Opak River, and livelihood programs supported by the Asian Development Bank and World Bank. Long-term effects included soil deposition altering drainage and agricultural productivity, mental health impacts addressed by Indonesian Ministry of Health initiatives, and policy adjustments enhancing hazard zoning enforced by provincial authorities of Central Java and the Yogyakarta Special Region. Infrastructure projects rebuilt roads and reinforced bridges along routes to Kawah Merapi viewpoints while cultural practices linked to the Keraton Yogyakarta adapted in shrine maintenance and ritual calendars.
Post-eruption studies from teams at Gadjah Mada University, Institut Teknologi Bandung, University of Cambridge, University of Oxford, ETH Zurich, and the Smithsonian Institution advanced understanding of dome-collapse pyroclastic density currents, eruption triggering mechanisms, and magma rheology. Geochronology and petrology work at Australian National University and University of Tokyo characterized magma mixing and crystallization histories using electron microprobe analyses and isotope geochemistry from laboratories at Scripps Institution of Oceanography and Purdue University. Modeling efforts by USGS, Imperial College London, and ETH Zurich improved hazard simulations of pyroclastic flow runout and lahar propagation incorporating topography from Shuttle Radar Topography Mission (SRTM)]. Remote sensing syntheses published by NASA and ESA refined volcanic plume dispersal models influencing aviation protocols by ICAO. Social science research involving Universitas Indonesia and Leiden University examined community resilience, risk perception, and traditional knowledge integration into formal early warning systems.
Category:Volcanic eruptions in Indonesia Category:2010 natural disasters Category:Mount Merapi