1946 Nankai earthquake

Magnitude 8.1–8.4 earthquake in Nankaidō, Japan hist October 2024 1946 Nankai earthquake 1946 Nankai Earthquake (12).jpg 1946 12 21 04:19 JST 1946-12-20 19:19:10 1946 Nankai earthquake intensity.png Japan iscgem898698 898698 w 8.1 s 8.3 (ISC) 30 km on 33.00 N 135.60 E inline,title https://www.ngdc.noaa.gov/hazel/view/hazards/earthquake/event-more-info/3845 Significant Earthquake Information 2024-03-21 National Geophysical Data Center / World Data Service (NGDC/WDS): NCEI/WDS Global Significant Earthquake Database. NOAA National Centers for Environmental Information. 1972 NOAA National Centers for Environmental Information 10.7289/V5TD9V7K Japan Nankai megathrust Yes At least 1362 dead, 2600 injured and 100 missing The 1946 Nankai earthquake (昭和南海地震 Shōwa Nankai jishin) was a great earthquake in Nankaidō, Japan. It occurred on December 21, 1946, at 04:19 JST (December 20, 19:19 UTC).https://earthquake.usgs.gov/regional/world/events/1946_12_20.php The 1946 Nankaido earthquake 2008-06-29 United States Geological Survey 13 March 2008 https://web.archive.org/web/20080601172947/http://earthquake.usgs.gov/regional/world/events/1946_12_20.php 1 June 2008 dead The earthquake measured between 8.1 and 8.4 on the moment magnitude scale, and was felt from Northern Honshū to Kyūshū. It occurred more than two years after the 1944 Tōnankai earthquake, which ruptured the adjacent part of the Nankai megathrust. Geology Nankai megathrust earthquakes The Nankai Trough is a convergent boundary where the Philippine Sea plate is being subducted beneath the Eurasian plate. Large earthquakes have been recorded along this zone since the 7th century, with a recurrence time of 100 to 200 years.http://www.sciencemag.org/cgi/content/abstract/289/5476/104?ck=nck Subducted Seamount Imaged in the Rupture Zone of the 1946 Nankaido Earthquake S. Kodaira N. Takahashi A. Nakanishi S. Miura Y. Kaneda Science American Association for the Advancement of Science 2000 289 5476 104–106 10.1126/science.289.5476.104 10884221 2000Sci...289..104K subscription Earthquake The 1946 Nankai earthquake was unusual in its seismological perspective, with a rupture zone estimated from long-period geodetic data that was more than twice as large as that derived from shorter period seismic data. In the center of this earthquake rupture zone, scientists used densely deployed ocean bottom seismographs to detect a subducted seamount 13 km mi 0 thick by 50 km mi 0 wide at a depth of 10 km mi 0. Scientists propose that this seamount might work as a barrier inhibiting brittle seismogenic rupture. Casualties and damage The earthquake caused extensive damage, destroying 36,000 homes in southern Honshū alone. The earthquake also caused a huge tsunami that took out another 2,100 homes with its 5 - 6 m ft off on waves. See also List of earthquakes in 1946 List of earthquakes in Japan References Tectonic implications of the 1944 Tonankai and the 1946 Nankaido earthquakes http://www.gps.caltech.edu/uploads/File/People/kanamori/HKpepi72.pdf H. Kanamori Hiroo Kanamori Physics of the Earth and Planetary Interiors Elsevier 1972 5 130 10.1016/0031-9201(72)90082-9 1972PEPI....5..129K 2013-11-02 https://web.archive.org/web/20131103181527/http://www.gps.caltech.edu/uploads/File/People/kanamori/HKpepi72.pdf 2013-11-03 dead External links 898698 Nankaido Nankaido Earthquake, 1946 Category:1940s tsunamis Category:December 1946 in Asia Category:Megathrust earthquakes in Japan Category:Occupied Japan Category:Tsunamis in Japan Category:Earthquakes of the Shōwa era Category:1946 disasters in Japan