1920 Hualien earthquake

Earthquake affecting Taiwan 1920 Hualien earthquake 1920-06-05 04:21:35 912519 official19200605042135000_20 5 June 1920 12:21:35 TT Taiwan 8.2 w y8.0 s y 20 km on 23.688 N 121.954 E inline,title Hualien County, Taiwan 7 8 dead, 24 injured On June 5, 1920, a shallow magnitude 8.2 earthquake struck offshore Hualien County, Empire of Japan (now Taiwan). It is currently the largest earthquake in Taiwan's modern history. Tectonic summary Taiwan is located within a complex zone of convergence between the Philippine and Eurasian plates. Off the island's east coast, these plates converge at a rate of 75 mm per year. To the south of Taiwan, oceanic crust of the Eurasian plate is subducting beneath the Philippine Plate, creating an island arc, the Luzon Arc. At Taiwan the oceanic crust has all been subducted and the arc is colliding with continental crust of the Eurasian plate. To the north of Taiwan the Philippine Sea plate is in contrast subducting beneath the Eurasian plate, forming the Ryukyu Arc.Molli G. Malavieille J. Orogenic processes and the Corsica/Apennines geodynamic evolution: insights from Taiwan International Journal of Earth Sciences 2010 100 5 1207–1224 10.1007/s00531-010-0598-y 129517282 Earthquake The earthquake had a moment-magnitude of 8.2 according to the International Seismological Centre. Lower-end estimates of the moment magnitude yielded a value of w 7.7 ± 0.2, which would still make it the largest in Taiwan. The USGS ShakeMap shows all areas of Taiwan felt shaking of between V and VII on the Modified Mercalli intensity scale. The shaking was also felt in southeast China, the island of Luzon in the Philippines, and southwest Japan.M 8.2 – 47 km SE of Hualien City, Taiwan https://earthquake.usgs.gov/earthquakes/eventpage/official19200605042135000_20/executive United States Geological Survey The source fault responsible for the earthquake has not been conclusively identified, although the epicenter location suggest it was associated with the southern portion of the Ryukyu subduction zone. Based on analyzing stations in Taiwan that recorded the earthquake, the hypocenter was determined to be within the accretionary wedge at 20–35 km focal depth. The likely source is a rupture propagating down-dip and laterally along a splay fault associated with the subduction zone.Theunissen Thomas Font Yvonne Lallemand Serge Liang Wen-Tzong The largest instrumentally recorded earthquake in Taiwan: revised location and magnitude, and tectonic significance of the 1920 event Geophysical Journal International 2010 183 3 1119–1133 10.1111/j.1365-246X.2010.04813.x 2010GeoJI.183.1119T free Impact Eight deaths and 24 injuries were reported.The 1920 Hualien Earthquake and Earthquake Risk in Taiwan https://www.air-worldwide.com/blog/posts/2020/6/earthquake-risk-in-taiwan-100-years-after-hualien/ air-worldwide.com 4 June 2020 Stelios Minas 1,530 houses were affected in the cities of Taipei, Taitung, Hsinchu and Taoyuan, of which 273 were destroyed, and 277 others were severely damaged.Event: Taiwan https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/3154 National Geophysical Data Center See also List of earthquakes in Taiwan List of earthquakes in 1920 2018 Hualien earthquake 2019 Hualien earthquake References Category:1920 earthquakes Category:Earthquakes in Taiwan Category:History of Hualien City Category:Earthquakes in Hualien County Category:1920 in Taiwan Category:June 1920 in Asia Category:20th century in Taiwan