2004 Alor earthquake

Earthquake in Indonesia 2004 Alor earthquake Land_crack_in_Alor_2004.png Damaged road in Alor Indonesia Lesser Sunda Islands#Indonesia 2004-11-11 21:26:41 7434650 usp000d85g 2004 11 12 05:26:41 WITA 40 seconds w yes 7.5 10.0 km on 8.152 S 124.868 E Thrust Alor Archipelago, East Nusa Tenggara, Indonesia X 1,011+ (as of 22 November 2004)Strongest: s 6.4 on 11 November 2004 34 deaths, 400 injuries, 30 missing On 12 November 2004, at 05:26:41 WITA (21:26:41 UTC, 11 November), a moment magnitude (w yes) 7.5 earthquake struck the Alor Archipelago in East Nusa Tenggara, Indonesia.M 7.5 - 63 km NW of Maubara, Timor Leste 2004 usp000d85g The island of Alor was devastated by the earthquake, with 17,500 of the 36,300 homes on the island damaged or destroyed. At least 34 fatalities, 400 injuries and 30 missing were recorded on the island. Tectonic setting thumb|USGS tectonic map of Alor|alt= Alor island is of volcanic origin, forming part of the Banda Arc, which was formed by the subduction of the Australian plate beneath the Eurasian plate. Currently the Banda Arc is involved in the early stages of an Arc-Continent collision, as continental crust of the Australian plate becomes involved in this boundary. Sunda-Banda arc transition, Incipient continent-island arc collision (northwest Australia) A. Shulgin H. Kopp C. Mueller E. Lueschen L. Planert M. Engels E. R. Flueh A. Krabbenhoeft Y. Djajadihardja amp May 27, 2009 Geophysical Research Letters 36 10 L10304 10.1029/2009gl037533 2009GeoRL..3610304S free Several microplates have been formed, including the Banda Sea plate and the Timor plate. The boundary between these two microplates is a north-dipping subduction zone, movement on which has caused large earthquakes in the past, including the 1991 Kalabahi earthquakes that resulted in 23 fatalities. Earthquake The earthquake occurred as a result of shallow thrust faulting on or near the convergent boundary between the Banda Sea plate to the north and the Timor plate to the south. Focal mechanism solutions indicate that rupture occurred on either a steep, near-vertical reverse fault or on a shallow, southward-dipping thrust fault. A rupture area of 95 km mi x 80 km mi was estimated, with a maximum slip of 3.9349 m ft north of the hypocenter. The observed source time function gives an almost 40 second duration for the earthquake, with the greatest phase of seismic moment release occurring about 10 seconds after initiation. It had a maximum Modified Mercalli intensity of X (Extreme) near the epicenter,EXPO-CAT Earthquake Catalog https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ December 1, 2008 United States Geological Survey Version 2007-12 3 May 2025 VIII (Severe) in Kalabahi, VI (Strong) in Liquiçá Municipality, East Timor and V (Moderate) in Dili. By 22 November, 1,011 aftershocks were recorded, the strongest measuring s 6.4.M 6.4 - 49 km NW of Maubara, Timor Leste 2004 usp000d860 Impact At least 34 people were killed, 30 were missing and 400 others were injured in Alor Regency, 118 of them seriously. There were 10 deaths in Northeast Alor, 5 each in North Central Alor and Kalabahi, 3 in North Alor and 1 each in Northwest Alor, Southeast Alor, South Alor and Pantar. At least 17,593 homes were damaged, of which 4,997 collapsed and 4,363 were severely damaged,ReliefWeb Indonesia: Earthquake Situation Report 18 Nov 2004 https://reliefweb.int/report/indonesia/indonesia-earthquake-situation-report-18-nov-2004 18 November 2004 12 February 2026 WHO along with 4.1 km mi of road,ReliefWeb Indonesia: Alor Earthquake Emergency Appeal No. 25/2004 https://reliefweb.int/report/indonesia/indonesia-alor-earthquake-emergency-appeal-no-252004 22 November 2004 11 February 2026 IFRC 297 schools, 449 places of worship, 419 public officesReliefWeb Indonesia: WV completes distribution of emergency aid to two villages in Alor4 https://reliefweb.int/report/indonesia/indonesia-wv-completes-distribution-emergency-aid-two-villages-alor 22 November 2004 11 February 2026 World Vision and eight health centers; the tsunami alone destroyed 22 homes, severely damaged 205 and lightly damaged 649 more.ReliefWeb Indonesia: Earthquake Situation Report 16 Nov 2004 https://reliefweb.int/report/indonesia/indonesia-earthquake-situation-report-16-nov-2004 16 November 2004 11 February 2026 WHO A total of nine sub-districts were affected, with a total population of 36,333 households.ReliefWeb Indonesia: Earthquake OCHA Situation Report No. 1 https://reliefweb.int/report/indonesia/indonesia-earthquake-ocha-situation-report-no-1-5 15 November 2004 11 February 2026 OCHA Much of Alor was left without electricity as of 16 November.ReliefWeb Indonesia: Alor Earthquake - Information Bulletin n° 1 https://reliefweb.int/report/indonesia/indonesia-alor-earthquake-information-bulletin-n-1 16 November 2004 11 February 2026 IFRC Two villages were particularly affected in Kalabahi, while nearby Alor Island Airport received significant damage, with the runway cracked. In the Maritaing sub-district, almost all villages reported heavy damage. In Northeast Alor, the location of the epicenter, all buildings collapsed, forcing 8,000 residents to seek shelter elsewhere,ReliefWeb ACT Alert Indonesia 1/2004: Earthquake measuring 7.3 hits Indonesian island https://reliefweb.int/report/indonesia/act-alert-indonesia-12004-earthquake-measuring-73-hits-indonesian-island 15 November 2004 11 February 2026 OCHA while landslides prevented access to the area for several days. A w 5.4 aftershock on 12 NovemberM 5.4 - 70 km NW of Maubara, Timor Leste 2004 usp000d88v killed six people, injured 40, and destroyed many buildings in Bukapiting village,id Detik 12 November 2004 17 August 2026 Gempa Susulan Landa Alor, Korban Tewas 6 Orang https://news.detik.com/berita/d-240541/gempa-susulan-landa-alor-korban-tewas-6-orang a b 5.2 aftershock on 15 November killed two more people,M 5.2 - 76 km NW of Maubara, Timor Leste 2004 usp000d8j7 and a man was killed by a landslide triggered by a b 4.8 aftershock on 17 November.ReliefWeb Indonesia: Alor Earthquake - Information Bulletin n° 2 https://reliefweb.int/report/indonesia/indonesia-alor-earthquake-information-bulletin-n-2 18 November 2004 12 February 2026 OCHAM 4.8 - Kepulauan Alor, Indonesia 2004 usp000d8mc Response and aftermath According to the United Nations Office for the Coordination of Humanitarian Affairs, financial assistance allocated by the local government had amounted to US$172,000. International organizations involved include the International Federation of Red Cross and Red Crescent Societies, Médecins Sans Frontières, World Vision International, Catholic Relief Services, Church World Service, Oxfam, and GTZ-Siskes. Some counties provided financial support, with the United States, China, Australia and Denmark donating a combined total of US$150,400. The International Red Cross also donated more than US$697,400.https://reliefweb.int/report/indonesia/indonesia-ocha-humanitarian-update-nov-2004-0 Indonesia: OCHA Humanitarian Update Nov 2004 – Indonesia ReliefWeb 30 November 2004 2019-05-17 2019-05-13 https://web.archive.org/web/20190513025026/https://reliefweb.int/report/indonesia/indonesia-ocha-humanitarian-update-nov-2004-0 live Since the earthquake, infrastructure in the region has become much more seismically resistant, mainly homes and schools, now generally being able to resist earthquakes of up to magnitude eight.Becker, N. (2009). Raising preparedness by risk analysis of post-disaster homelessness and improvement of emergency shelters. Disaster Prevention And Management: An International Journal, 18(1), 49-54. doi: 10.1108/09653560910938529 See also List of earthquakes in 2004 List of earthquakes in Indonesia 1992 Flores earthquake and tsunami February 2004 Nabire earthquakes November 2004 Nabire earthquake 2004 Indian Ocean earthquake and tsunami 2026 Flores earthquake References External links eq-2004-000121-idn Category:2004 disasters in Indonesia Category:Earthquakes in Indonesia Category:2004 earthquakes Category:Alor Archipelago Category:November 2004 in Indonesia