1963 Marj earthquake

Earthquake affecting Libya 1963 Marj earthquake AlMarj041.JPG Damage in Al Marj from the Al Marj earthquake Libya 1963-02-21 17:14:36 871865 iscgem871865 1963 02 21 18:14:36 EEST 5.6 w y 25 km mi 0 on 32.66 21 region:ID_type:event inline,title Libya $5 million VIII 290–375 dead 375–500 injured 12,000 displaced The 1963 Marj earthquake occurred on February 21 in northern Libya. The earthquake occurred at 18:14:36 local time 17:14:36 UTC with a moment magnitude of 5.6 and a maximum Mercalli intensity of VIII (Severe). Financial losses totaled US$5 million, with 290–375 deaths, 375–500 injuries, and 12,000 people being rendered homeless. Tectonic setting The northern part of Cyrenaica lies close to the northern edge of the African plate. Offshore lies the Mediterranean Ridge, an accretionary wedge, developed above the destructive plate boundary where the African plate is being subducted beneath the Aegean Sea plate along the Hellenic subduction zone. The Cyrenaica promontory is thought to be undergoing incipient collision as the continental margin enters the subduction zone.Polonia A. Camerlenghi A. Davey F. Storti F. 2002 Accretion, structural style and syn-contractional sedimentation in the Eastern Mediterranean Sea Marine Geology 186 1–2 127–144 10.1016/S0025-3227(02)00176-7 2002MGeol.186..127P The Cyrenaica region is characterised by relatively low magnitude earthquakes with thrust fault focal mechanisms,Capitanio F.A. The Formation and Evolution of Africa: A Synopsis of 3.8 Ga of Earth History Faccena C. Funiciello R. Salvini F. 2011 Geological Society, London 978-1-86239-335-6 Van Hinsbergen D.J.J. Special Publications 357 Recent tectonics of Tripolitania, Libya: an intraplate record of Mediterranean subduction 10.1144/SP357.17 131721574 Buiter S.J.H. Torsvik T.H. Gaina C. Webb S.J. developed in an area of NE–SW directed maximum horizontal stress.Al-Heety E. 2013 Seismicity and seismotectonics of Libya: as an example of intraplate environment https://www.academia.edu/6815418 Arabian Journal of Geosciences 6 1 193–204 10.1007/s12517-011-0347-y 2013ArJG....6..193A 129425103 Earthquake The earthquake's epicenter was located about 13 km to the north-northeast of the city of Marj in the Marj District of Cyrenaica. It was felt as far away as Benghazi, about 100 km from the epicenter. The magnitude has been calculated as w5.6 by the ISC. It was followed later that day by two aftershocks of over w4.0.http://www.iitk.ac.in/nicee/wcee/article/vol3_V-96.pdf Relocation and reconstruction of the Town of Barce, Cyrenaica, Libya, damaged by the earthquake of 21 February 1963 Minami K. 1963 UNESCO Damage The main area of damage was restricted to a 20 km long section of the alluvial plain around Marj, which is located between two escarpments, possibly fault-related. The maximum damage was observed at Maddalena, a village about 12 km from Marj and close to the epicenter, in which all the farmhouses collapsed. The effects of the shaking depended on the construction type of the buildings. Those built of rubble masonry were most affected, with many collapsing and causing most of the casualties. Buildings constructed from hollow concrete blocks were only moderately affected and those built with reinforced concrete were almost completely unaffected. Aftermath The Libyan authorities followed the recommendations of the UNESCO report and rebuilt Marj on firmer ground about 4 km away from its original location.Cousins M. November 12, 2017 Small earthquake in Marj, no one hurt https://www.libyaherald.com/2017/11/small-earthquake-in-marj-no-one-hurt/ July 1, 2022 LibyaHerald See also List of earthquakes in 1963 References The Seismicity of Egypt, Arabia and the Red Sea: A Historical Review https://books.google.com/books?id=fxnnk2inWT0C N. N. Ambraseys Nicholas Ambraseys C. P. Melville R. D. Adams 2005 Cambridge University Press 978-0521020251 90, 91 ISC-GEM Global Instrumental Earthquake Catalogue (1900–2013) https://www.isc.ac.uk/iscgem/index.php ISC 2016 International Seismological Centre Version 4.0 Significant Earthquake Information https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/4285 National Geophysical Data Center / World Data Service (NGDC/WDS) National Geophysical Data Center, NOAA 10.7289/V5TD9V7K 1972 Data Set PAGER-CAT Earthquake Catalog https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ September 4, 2009 United States Geological Survey Version 2008_06.1 External links M 5.6 – near the coast of Libya – United States Geological Survey 871865 Category:Earthquakes in Africa Category:Natural disasters in Libya Category:1963 earthquakes Category:1963 in Libya Category:February 1963