1969 Yangjiang earthquake

Earthquake in Guangdong, China October 2024 1969 Yangjiang earthquake 1969-07-25 22:49:41 807433 iscgem807433 yes 1969 07 26 06:49:41 China Guangdong 6.4 w y 10 km 9 21.61 111.83 inline,title China, Yangjiang 3,000 dead The 1969 Yangjiang earthquake occurred on 26 July, at 6:49 am, Beijing local time (25 July 22:49 UTC). It had a magnitude of 6.4 on the moment magnitude scale and a maximum perceived intensity of IX (Violent) on the Mercalli intensity scale.EXPO-CAT Earthquake Catalog https://earthquake.usgs.gov/static/lfs/data/pager/catalogs/ December 1, 2008 United States Geological Survey Version 2007-12 26 March 2025 It struck the city of Yangjiang, causing over 10,700 houses to collapse and severely damaging a further 36,000. The earthquake also caused landslides and sandblows observed along the coast and along some rivers in the area of Yangjiang.http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4492&t=101650&s=13&d=22,26,13,12&nd=display https://web.archive.org/web/20181006235605/https://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4492&t=101650&s=13&d=22,26,13,12&nd=display dead 6 October 2018 Comments for the Significant Earthquake NGDC 27 August 2010 The earthquake was also felt in Hong Kong. There were an unconfirmed total of 3,000 deaths.https://earthquake.usgs.gov/earthquakes/world/world_deaths.php Earthquakes with 1,000 or More Deaths since 1900 United States Geological Survey 29 March 2010 27 August 2010 dead https://web.archive.org/web/20130114225331/http://earthquake.usgs.gov/earthquakes/world/world_deaths.php 14 January 2013 Tectonic setting Guangdong Province lies in a tectonically stable part of China, which has relatively low seismicity. The area forms part of the passive margin between the continental crust of China and the oceanic crust of the northern part of the South China Sea. Within the stable South China Block, there are three zones of higher earthquake activity, one of which is the Southeast China Coast seismic zone running through Guangdong and Fujian Provinces. This zone follows the South China Maritime Fold Belt, which was formed by a subduction event during the Late Jurassic to Early Cretaceous epochs.http://203.129.68.43/publica/reprint/r645.pdf Simulation of Distant Earthquakes Affecting Hong Kong Megawati K. Wong W.T. Chan L.S. Chandler A.M. Chan Y.W. amp 2004 3rd International Conference on Continental Earthquakes, Beijing, China, 12–14 July 2004 Hong Kong Observatory 7 November 2011 https://web.archive.org/web/20120305191133/http://203.129.68.43/publica/reprint/r645.pdf 5 March 2012 dead The area is currently in a compressive stress regime with the maximum horizontal stress orientated northwest–southeast. This results from a combination of the continuing collision between the Indian and Eurasian plates, and the subduction of the Philippine Sea plate.Liu L. 2001 Stable Continental Region Earthquakes in South China Pure and Applied Geophysics 158 9–10 1583–1611 10.1007/PL00001235 http://www.engr.uconn.edu/~lanbo/2001PAGEOPH.pdf 6 November 2011 2001PApGe.158.1583L 129409870 https://web.archive.org/web/20120610223934/http://www.engr.uconn.edu/~lanbo/2001PAGEOPH.pdf 10 June 2012 dead Earthquake The earthquake occurred on a steeply-dipping fault striking nearly east–west. The focal mechanism shows mainly dextral (right lateral) strike-slip faulting. The magnitude and number of recorded foreshocks and aftershocks were unusually small, considering the size of the mainshock. This earthquake is the only damaging event in the epicentral area in historical records.Brantley B.J. Chung W.-Y. 1991 Body-wave waveform constraints on the source parameters of the Yangjiang, China, earthquake of July 25, 1969: A devastating earthquake in a stable continental region Pure and Applied Geophysics 135 4 529–543 10.1007/BF01772404 1991PApGe.135..529B 129927805 Damage The epicentral area lay mostly in Yangjiang County, affecting an area measuring 19 km by 10 km, elongated west to east. In the whole county, a total of 10,762 houses were completely destroyed, a further 35,965 were severely damaged and another 90,840 suffered some damage. In Xinyi about 1,200 houses suffered some damage and several were destroyed. The earthquake was also strongly felt in Fengkai, Huaiji, Xinzhong, Deqing, Zhaoqing, Yunan, Zengcheng, Gaohe and Panyu, although there was no serious damage in these areas. Minor damage was also reported in Hong Kong. A report of 3,000 casualties caused by this earthquake is described as "unconfirmed". See also List of earthquakes in 1969 List of earthquakes in China References External links 807433 Yangjiang Earthquake, 1969 Category:Earthquakes in Guangdong Category:1969 disasters in China Category:Yangjiang Category:July 1969 in Asia