1980 El Asnam earthquake

7.1 magnitude earthquake on the Algerian coast 1980 El Asnam earthquake 1980-10-10 12:25:23 636856 usp0001a5w 1980 10 10 13:25:23 Algeria Algeria 36.77 3.22 Algiers 120 Green pog.svg Algeria 36.2 1.37 Bullseye1.png 40 Algeria 35.7 -0.63 Oran 120 left Green pog.svg 1 300 right 1980 El Asnam earthquake ShakeMap.jpg 7.1 w y 10 km on 36.2 N 1.37 E region:DZ_type:event inline,title Dip-slip El Asnam Chlef Province Algeria 35 seconds X 0.7 m on 6.2 w y Oct 10 at 15:39 UTC 2,633–5,000 dead 8,369–9,000 injured The 1980 El Asnam earthquake occurred on October 10 at 13:25:23 local time 12:25:23 UTC with a moment magnitude of 7.1 and a maximum Mercalli intensity of X (Extreme). The shock occurred in the Algerian town of El Asnam (now known as Chlef). The shocks were felt over 550 km mi on away, with the initial earthquake lasting 35 seconds. It was the largest earthquake in Algeria, and was followed three hours later by a magnitude 6.2 aftershock. The earthquake created about 42 km mi on of surface rupture and had a vertical slip of up to 4.2 m ft on. No foreshocks were recorded. The earthquake was found to have occurred very close to the epicenter of the 1954 Chlef earthquake using joint epicenter determination techniques. It occurred at a previously unknown reverse fault.http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4896&t=101650&s=13&d=399,26,13,12&nd=display Comments for the Significant Earthquake NOAA October 21, 2016 December 16, 2022 https://web.archive.org/web/20221216205911/https://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4896&t=101650&s=13&d=399,26,13,12&nd=display dead The earthquake was the largest in the Atlas range since 1790.The El Asnam (Algeria) earthquake of 10 October 1980; conclusions drawn from a field study http://qjegh.lyellcollection.org/cgi/content/abstract/14/2/143 Nicolas Ambraseys Nicholas Ambraseys 1981 Quarterly Journal of Engineering Geology and Hydrogeology 14 2 143–148 10.1144/gsl.qjeg.1981.014.02.05 140701882 14 July 2009 27 February 2023 https://web.archive.org/web/20230227144430/http://qjegh.lyellcollection.org/cgi/content/abstract/14/2/143 live subscription In addition to the earthquake, weak tsunami waves were recorded on tide gauges.http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4896&t=101650&s=18&d=398,91,95,93&nd=display Comments for the Significant Earthquake NOAA October 21, 2016 April 29, 2020 https://web.archive.org/web/20200429173150/https://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4896&t=101650&s=18&d=398,91,95,93&nd=display dead The earthquake occurred at a populated region of Algeria, affecting 900,000 people. It destroyed 25,000 houses and made 300,000 inhabitants homeless. In addition to destroying homes, the earthquake also demolished critical infrastructure, including the main hospital, the central mosque, and a girls' school. The hospital was damaged significantly enough that victims had to be transported more than 100 mi km flip on away to the next nearest hospital. Both events caused considerable damage with at least 2,633 killed and 8,369 injured.https://news.bbc.co.uk/onthisday/hi/dates/stories/october/10/newsid_3714000/3714612.stm Thousands feared dead in Algerian quake BBC News October 10, 1980 July 14, 2009 August 7, 2009 https://web.archive.org/web/20090807094437/http://news.bbc.co.uk/onthisday/hi/dates/stories/october/10/newsid_3714000/3714612.stm live The earthquake caused approximately $5.2 billion in damage, which was 22% of Algeria's GDP at the time.http://gemecd.org/event/17 El Asnam Algeria 1980 (CAR) October 21, 2016 GEM ECD October 21, 2016 https://web.archive.org/web/20161021142842/http://gemecd.org/event/17 dead See also 1954 Chlef earthquake List of earthquakes in 1980 List of earthquakes in Algeria Notes ISC-GEM Global Instrumental Earthquake Catalogue (1900–2009) http://www.isc.ac.uk/iscgem/index.php ISC 2015 International Seismological Centre Version 2.0 2015-12-30 2016-11-25 https://web.archive.org/web/20161125091901/http://www.isc.ac.uk/iscgem/index.php live Significant Earthquake Database https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 National Geophysical Data Center / World Data Service (NGDC/WDS) National Geophysical Data Center, NOAA 10.7289/V5TD9V7K 1972 Data Set 2015-12-30 2017-07-21 https://web.archive.org/web/20170721203405/https://www.ngdc.noaa.gov/nndc/struts/form?t=101650&s=1&d=1 dead The 1954 and 1980 Algerian earthquakes: Implications for the characteristic-displacement model of fault behavior http://bssa.geoscienceworld.org/content/81/2/446.abstract J. W. Dewey 1991 Bulletin of the Seismological Society of America 81 2 446–467 2014-02-26 2016-10-21 https://web.archive.org/web/20161021203019/http://bssa.geoscienceworld.org/content/81/2/446.abstract live PAGER-CAT Earthquake Catalog https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ September 4, 2009 United States Geological Survey Version 2008_06.1 May 21, 2024 January 15, 2018 https://web.archive.org/web/20180115071656/https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ live The Geology of Earthquakes R. S. Yeats K. E. Sieh Kerry Sieh C. R. Allen Clarence Allen (geologist) 1997 978-0-19-507827-5 Oxford University Press 477 External links 636856 El Asnam Earthquake, 1980 El Asnam Earthquake, 1980 1980 Category:October 1980 in Africa Category:1980 disasters in Algeria