1990 Gonghe earthquake

Earthquake in Tibet 1990 Gonghe earthquake 1990-04-26 09:37:15 usp00048gu 373782 373783 #Qinghai #China yes 1990 04 26 17:37 CST 7.0 s y 8.1 km IX Reverse 35.986 N 100.245 E China 126 deadCHINA: QINGHAI PROVINCE: GANGHE-XINGHAI https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/5233 NGDC NCEI NCEI 19 March 2021 The 1990 Gonghe earthquake occurred on April 26 at 17:37 China Standard Time in Hainan Tibetan Autonomous Prefecture, Qinghai Province. The mainshock had a surface wave magnitude of 7.0 s and a moment magnitude of 6.5 w.M 6.5 - southern Qinghai, China https://earthquake.usgs.gov/earthquakes/eventpage/usp00048gu/executive USGS-ANSS USGS 19 March 2021 It was presaged by two foreshocks that struck merely seconds before the main earthquake.M 6.3 - northern Qinghai, China https://earthquake.usgs.gov/earthquakes/eventpage/usp00048gt/executive USGS-ANSS USGS 19 March 2021M 6.2 - northern Qinghai, China https://earthquake.usgs.gov/earthquakes/eventpage/iscgem373782/executive USGS-ANSS USGS 19 March 2021 On the Mercalli intensity scale, the earthquake had a rating of IX (Violent).Wenjing Ma Zhang Yaling Zou Wenwei The Gonghe magnitude 7.0 earthquake in Qinghai Province on April 26, 1990 https://data.earthquake.cn/data/data/zhenli/wjf/html/zhenli098.htm data.earthquake.cn Seismological Bureau of Qinghai Province 19 March 2021 Chinese Damage At least 126 people died and 2,049 left wounded by the earthquake. Landslides and extensive destruction was reported in the area. Damage to properties was major, with 21,000 homes collapsing and another 66,800 damaged. The Longyangxia Reservoir about 60 km away from the earthquake experienced strong shaking which triggered landslides but its nearby power plant and dam were in normal working conditions.青海共和地震 http://www.kepu.net.cn/gb/earth/quake/document/dcm021.html Chinese Academy of Sciences 19 March 2021 Chinese Total damage caused by the earthquake is estimated at 270 million Chinese Yuan.新闻背景：1976年以来中国发生的六级以上大地震 http://www.gov.cn/jrzg/2008-05/13/content_970378.htm#:~:text=%EF%BC%91%EF%BC%99%EF%BC%99%EF%BC%90%E5%B9%B4%EF%BC%94%E6%9C%88%EF%BC%92%EF%BC%96,%E8%BE%BE%EF%BC%92%EF%BC%8E%EF%BC%97%E4%BA%BF%E5%85%83%E3%80%82 gov.cn Central People's Government of the People's Republic of China 19 March 2021 Chinese 24 April 2020 https://web.archive.org/web/20200424112203/http://www.gov.cn/jrzg/2008-05/13/content_970378.htm#:~:text=%EF%BC%91%EF%BC%99%EF%BC%99%EF%BC%90%E5%B9%B4%EF%BC%94%E6%9C%88%EF%BC%92%EF%BC%96,%E8%BE%BE%EF%BC%92%EF%BC%8E%EF%BC%97%E4%BA%BF%E5%85%83%E3%80%82 dead In the zone with the highest intensity, IX, encompassing Gonghe County, all brick and adobe constructed houses were razed. About 320 wood-framed and mud-walled settlements were destroyed, the only 12 left standing suffered serious damage. Brick and concrete bungalows did not collapse but they were severely compromised after the earthquake. In zones with intensities VII and VIII, more homes collapsed, causing casualties. Some old houses in zone VI also collapsed. Characteristics The earthquake in the northeastern Tibetan Plateau according to seismologists, ruptured a blind thrust fault structure due to the absence of a surface rupture.Ming Hao Zheng-Kang Shen Qingliang Wang Duxin Cui Postseismic deformation mechanisms of the 1990 Mw 6.4 Gonghe, China earthquake constrained using leveling measurements Tectonophysics 2012 532–535 205–214 10.1016/j.tecto.2012.02.005 2012Tectp.532..205H https://www.sciencedirect.com/science/article/pii/S0040195112000820 19 March 2021 0040-1951 subscription Elements of both sinistral strike-slip and reverse components were detected during the co-seismic rupture, with the latter having a greater sense.Chen Y.T. Xu L.S. Li X. Source process of the 1990 Gonghe, China, earthquake and tectonic stress field in the northeastern Qinghai-Xizang (Tibetan) plateau Pure and Applied Geophysics 1996 146 3–4 697–715 10.1007/BF00874741 1996PApGe.146..697C 129267313 https://link.springer.com/article/10.1007/BF00874741 19 March 2021 subscription The estimated length and width of the rupture is 37 km and 6 km respectively, with a slip of around 2.7 meters.Wang W.P. Wang Q.L. Dislocation parameters of Gonghe earthquake jointly inferred by using genetic algorithms and least squares method Acta Seismologica Sinica 1999 12 3 314–320 10.1007/s11589-999-0041-2 1999AcSSn..12..314W 129290131 https://link.springer.com/article/10.1007/s11589-999-0041-2 19 March 2021 subscription See also List of earthquakes in 1990 List of earthquakes in China References Category:1990 earthquakes Category:1990 disasters in China Category:Hainan Tibetan Autonomous Prefecture Category:Buried rupture earthquakes Category:Earthquakes in Qinghai Category:Earthquakes in Tibet Category:1990 in China Category:April 1990 in China