1941 Jabal Razih earthquake

Earthquake in Yemen 1941 Jabal Razih earthquake 1941-01-11 08:31:48 900618 iscgem900618 1941 01 11 Yemen 5.8–6.5 s y VIII 35.0 km 5.8 s & 5.2 s 16.4 43.5 inline, title Mutawakkilite Kingdom of Yemen 1,200 dead200 injured The 1941 Sa'dah earthquake or the Jabal Razih earthquake occurred on January 11 in Razih District of the Mutawakkilite Kingdom of Yemen. The earthquake had a surface-wave magnitude of 5.8–6.5 and a shallow focal depth.N. N. Ambraseys C. P. Melville Seismicity of Yemen Nature 1983 303 5915 321–323 10.1038/303321a0 1983Natur.303..321A 4337703 https://www.nature.com/articles/303321a0 17 July 2021 subscription ISC: On-Line Bulletin http://www.isc.ac.uk/cgi-bin/web-db-v4?event_id=900618&out_format=IMS1.0&request=COMPREHENSIVE International Seismological Centre Online Event Bibliography International Seismological Centre 17 July 2021 Despite the moderate size of this earthquake, an estimated 1,200 people perished and at least 200 injured.Significant Earthquake Information https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/8182 ngdc.noaa.gov NCEI 17 July 2021 With a maximum MSK-64 intensity assigned at VIII, it destroyed many villages and collapsed homes in the region of North Yemen.P.C. Thenhaus Sylvester Theodore Algermissen D.M. Perkins S.L. Hanson W.H. Diment Probabilistic estimates of the seismic ground-motion hazard in western Saudi Arabia U.S. Geological Survey Bulletin 1989 1868 10.3133/b1868 https://pubs.usgs.gov/bul/1868/report.pdf 17 July 2021 U.S. Geological Survey Federal Center 2027/msu.31293017316617 free Tectonic setting Western Yemen is located near the southwestern point of the Arabian plate. At this location lies the Afar triple junction, where it meets the Nubian and Somali plates at three divergent boundaries. The three plates are rifting apart; extensional tectonics stretch the plates and eventually form new oceanic crust, in the case of the Gulf of Aden and the Red Sea, where active rifting is ongoing. The extension causes normal faulting to break within the crust and cause earthquakes. The most recent major seismic activity related to the regional tectonics were a series of six magnitude 6.0+ earthquakes in Djibouti and Ethiopia in 1989. The largest shock had a moment magnitude of 6.5 and resulted in two deaths.M 6.5 – 12 km ENE of Gâlâfi, Djibouti https://earthquake.usgs.gov/earthquakes/eventpage/usp0003ynm/executive United States Geological Survey 17 July 2021 Foreshocks The earthquake was preceded by slight foreshocks that began days before the mainshock struck. A damaging foreshock occurred at noon on January 9, causing destruction in Al Hudaydah. Damage The mainshock occurred at mid-day with an estimated surface-wave magnitude of between 5.8 and 6.2 while some estimates suggests it was up to s 6.5. This strong earthquake was felt in the Al Darb governorate of neighboring Saudi Arabia and as far as Assab in present-day Eritrea, then part of Ethiopia. In all, a total of 1,200 people were killed and some 1,700 homes were lost.Rakesh Mohindra Yamaoka Koshun Probabilistic Seismic Hazard Analysis for Yemen International Journal of Geophysics 2012 2012 1–14 10.1155/2012/304235 free Another 400 homes suffered damage so serious, they had to be demolished. Aftershocks Many aftershocks were felt every day up until the second week of March.Nicholas Ambraseys Charles P. Melville Richard D. Adams The Seismicity of Egypt, Arabia and the Red Sea: A Historical Review 2005 Cambridge University Press 9780521020251 204 These aftershocks worsened the damage caused by the mainshock. Two large aftershocks occurred at 09:18 on 4 February and at 19:03 on 23 February. The first aftershock had a magnitude of 5.2 and was reported from Haidan, Khaulan, al-Zahir, and Wadi al-'Abidin near Sa'da, causing landslides. Damage was also reported from Abu Arish and Sabiya to the northwest and Harad to the southwest. The second aftershock of 23 February was reported from al-Hudaida, Bait al-Faqih, al-Sa'id, and Bura, and caused significant damage. See also 1982 North Yemen earthquake List of earthquakes in 1941 List of earthquakes in Yemen List of earthquakes in Saudi Arabia References External links 900618 Category:1941 earthquakes Category:Earthquakes in Yemen Category:Earthquakes in Asia Category:Natural disasters in Saudi Arabia Category:January 1941 in Asia Category:1941 disasters in Asia