1983 Heze earthquake

Earthquake in Shandong, China 1983 Heze earthquake 35.206 N 115.213 E inline,title Shandong#China 1983-11-06 21:09:45 usp0001zm0 564438 November 7, 1983 05:09:25 (UTC+8) 5.7 b yes5.9 s yes 19 km mi 0 on Strike-slip China 7 34 dead2,200 injured The 1983 Heze earthquake occurred near the administrative borders between the provinces of Shandong and Henan in the People's Republic of China on November 7, 1983, at 05:09 local time and date. The earthquake had a body-wave magnitude of 5.7 and a maximum intensity of VII (Very strong) on the Modified Mercalli intensity scale.M 5.7 - 24 km W of Heze, China https://earthquake.usgs.gov/earthquakes/eventpage/usp0001zm0/executive 2022-02-09 earthquake.usgs.govNCEI Global Historical Hazard Database https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/5002 2022-02-09 www.ngdc.noaa.gov en The event caused 34 deaths and injured 2,200 people. More than 3,300 houses were destroyed. Tectonic setting The Shandong Plain lies inside the much larger North China Plain, a seismically active alluvial plain riddled with faults and boundaries and home to most of China's most catastrophic earthquakes. In this case, within the eastern regions of Shandong and China lies the Tanlu fault, one of the largest faults in all of Eastern China reaching as far as the Bohai Sea. The Tanlu fault and the Yishu fault were the cause of the 1668 Shandong earthquake with a moment magnitude of 8.5 and the 1937 Heze earthquakes respectively.Tao Jiang Zhigang Peng Weijun Wang Qi-Fu Chen 2010 Remotely Triggered Seismicity in Continental China following the 2008 Mw 7.9 Wenchuan Earthquake http://geophysics.eas.gatech.edu/people/zpeng/zpeng_paper/Jiang_etal_BSSA_2010.pdf Bulletin of the Seismological Society of America 100 5B 2574–2589 10.1785/0120090286 2010BuSSA.100.2574J Lei Jianshe Zhao Dapeng Xu Xiwei Du Mofei Mi Qi Lu Mingwen 2020-02-01 P-wave upper-mantle tomography of the Tanlu fault zone in eastern China Physics of the Earth and Planetary Interiors en 299 106402 10.1016/j.pepi.2019.106402 2020PEPI..29906402L 210637062 0031-9201 free Earthquake The earthquake was said to be a result of a modal plane striking in a Northeastern direction in the plains of the Shandong province. The northeastern direction of the fracture has a velocity of 0.6 kilometers per second, the rupture of the said fault was measured at a length of 3 kilometers. From more calculations it was said that the magnitude of the earthquake was 5.9 on the surface-wave magnitude scale or 5.7 on the moment magnitude scale. The mezoseismal area near the epicenter recorded a maximum intensity VII (Very strong) according to the Modified mercalli scale, and it was said to be felt as far as the Hebei and Henan provinces nearby.Wanqinup Liu Guangxingup Wei Cuiyingup Zhou August 1989 A Study of the Focal Process of the Heze Earth-Quate (MS=5.9), Shandong Province of November 7, 1983. https://www.dzxb.org/en/article/id/e544ae5c-824a-43b2-a3f3-2e93644114a8 Acta Seismologica Sinica 11 9 Precursor anomalies A month before the earthquake occurred, multiple anomalies and changes along faults near the epicenter were observed. Some anomalies were said to have involved with liquids and hydrochemical elements on the most vulnerable faults in the northern plains of China. Certain spikes of these anomalies were frequent with sudden jumps of observations.Jie Geng Zhaodong Zhang 1998-06-15 Discussion on the Distribution Characteristics of Subsurface Fluid Anomalies Before the Heze 1983 M5.9 Earthquake and the Relative Issues Concerned http://www.nceqsci.com/en/article/id/1616 华北地震科学 zh 16 2 15–22 1003-1375 Another geological anomaly that was observed was uplift occurring upon 20 km mi 0 on of the plane fault, specifically a maximum uplift of 2.8 mm; slightly above the average uplift of 2 mm. It was later realized that the fault was experiencing multiple soft strains for one year before the mainshock. The straints have also caused minor shocks since the last earthquake in the area in 1937. Damage and casualties Damage was observed in the counties of Heze and Dongming in Shandong; 3,300 houses were destroyed. A total of 34 people were confirmed dead and 2,200 people were injured, mainly due to falling debris. See also 1937 Heze earthquakes 1668 Shandong earthquake List of earthquakes in China List of earthquakes in 1983 References Category:1983 earthquakes Category:Earthquakes in Shandong Category:History of Heze Category:1983 disasters in China Category:November 1983 in China Category:20th century in Shandong