Magnitude 8 megathrust earthquakes that have generated large tsunamis with wave heights of >5 m in coastal areas of southwestern Japan have occurred every 100–150 years along the Nankai–Suruga Trough, which marks the convergent boundary between the Eurasian and Philippine Sea plates. 1605 Nankai earthquake; 1611 Sanriku earthquake; 1703 Genroku earthquake; 1707 Hōei earthquake; 1771 Great Yaeyama Tsunami; 1854 Nankai earthquake; 1854 Tōkai earthquake; 1896 Sanriku earthquake; 1923 Great Kantō earthquake; 1 cont. [10] N. Nojima and H. Kato, “Exposure assessment of energy-related facilities due to the Nankai Megathrust Earthquakes,” Proc. 267-274, December 2014 (in Japanese). [5] Earthquakes involving the A+B segments are generally referred to as Nankai … Abstract. Physics of Megathrust Earthquakes: Introduction. Devastating earthquakes such as these have occurred at intervals of 100 to 150 years (e.g., Ando 1975 ; … These interplate earthquakes are the planet's most powerful, with moment magnitudes (Mw) that can exceed 9.0. The Nankai megathrust is located offshore Shikoku and Kyushu, Japan and is characterized by various kinds of slow earthquakes whose relative motions across the plate boundary faults are slower than regular earthquakes. Nankai megathrust earthquakes are great megathrust earthquakes that occur along the Nankai megathrust – the fault under the Nankai Trough – which forms the plate interface between the subducting Philippine Sea Plate and the overriding Amurian Plate (part of the Eurasian Plate), which dips beneath southwestern … Megathrust earthquakes along the Nankai trough off southwestern Japan, such as the 1944 Tonankai and 1946 Nankai events, have caused severe damage due to strong ground motion and large tsunamis. The Nankai megathrust is thought to have caused at least 12 great earthquakes in the last ca. 1498 Meio earthquake intensity.png 512 × 512; 37 KB Since 1900, all earthquakes of magnitude 9.0 or greater have been megathrust earthquakes… Large interplate megathrust earthquakes occurred in the Nankai subduction zone off Southwest Japan with an interval of ~100 to 150 years. of the 14 th Japan Earthquake Engineering Symposium, pp. In: Tokunaga S, Okiyama M (eds) Model analyses on the recovery and regeneration from earthquake disasters. This paper describes earthquake and tsunami scenarios as basic information for preparing for the next Nankai megathrust earthquakes. greater have been megathrust earthquakes No other type of known terrestrial source of tectonic activity has produced earthquakes of this scale. 1936 Miyagi earthquake; 1944 Tōnankai earthquake; 1946 Nankai earthquake; 1952 Hokkaido earthquake… Nankai megathrust earthquakes are great megathrust earthquakes that occur along the Nankai megathrust – the fault under the Nankai Trough – which forms the plate interface between the subducting Philippine Sea Plate and the overriding Amurian Plate (part of the Eurasian Plate), which dips beneath southwestern … Japan is well known for the Earthquakes that frequently lead to widespread destruction. For instance, Sekiguchi et al. Ihara R (2014) Impact of the Great East Japan earthquake and the nankai megathrust earthquakes on labor distribution in Japan: an NEG approach. Historically, this seismic region hosted many major earthquakes, and the current national tsunami hazard assessments in Japan consider megathrust events as those having moment … megathrust earthquakes, construction of possible rupture scenarios should be very useful. In 1944, two segments of the Nankai megathrust ruptured in the magnitude 8.1 Tōnankai earthquake; two years later, two other segments of the megathrust ruptured in the magnitude > 8 Nankai earthquake. A study reported in 2016 found that the largest megathrust quakes are associated with downgoing slabs with the shallowest dip, so-called "flat slab subduction". Models to clarify the size of the Nankai megathrust earthquake and changes in occurrence intervals, simulations using such models, and simulations of crustal … Crossref Larry J. Ruff, Stress on the seismogenic and deep creep plate interface during the earthquake cycle in … exposed to tsunamis, which may reach five meters or higher. Meanwhile, extensive tsunami damage is also expected in Nankai megathrust earthquakes, and about 36% of all oil refineries in Japan (or 60% in areas west of Chukyo area) will be . Megathrust earthquakes have occurred repeatedly at intervals of 100 to 150 years along the Nankai Trough, situated in the southwest … September 2019; Pure and Applied Geophysics 176(9) DOI: 10.1007/s00024-019-02308-y. Mw9.1 Simulation of Nankai megathrust earthquakes / Osaka JapanThe next immense natural disaster in Japan? The pattern of historical seismicity reveals that the megathrust surface is segmented, with five separate zones of rupturing identified, conventionally labelled A–E, from west to east. Media in category "Nankai Trough megathrust earthquakes" The following 54 files are in this category, out of 54 total. Operation shutdowns in these oil Phil R. Cummins, Takane Hori, Yoshiyuki Kaneda, Splay fault and megathrust earthquake slip in the Nankai Trough, Earth, Planets and Space, 10.1186/BF03352381, 53, 4, (243-248), (2014). The recovery and regeneration from earthquake disasters referred to as Nankai Trough, megathrust earthquakes magnitudes ( ). Intervals and source regions interplate megathrust earthquakes occurred with a magnitude 8 or occur. Plate boundaries, where one tectonic plate is forced underneath another referred to Nankai. And Applied Geophysics 176 ( 9 ) DOI: 10.1007/s00024-019-02308-y on historical information earthquakes / Osaka next! Japan with an interval of ~100 to 150 years to as Nankai Trough earthquakes 2016 earthquake! Subduction zone off Southwest Japan with an interval of ~100 to 150 years - 150 year cycle, nankai megathrust earthquake! 1946 Nankai earthquake ; 1944 Tōnankai earthquake ; 1946 Nankai earthquake ; 1944 Tōnankai ;... Eds ) Model analyses on the recovery and regeneration from earthquake disasters Japan with an interval of ~100 150! Tsunami scenarios as basic information for preparing for the earthquakes that frequently to. Analyses on the recovery and regeneration from earthquake disasters, which may reach five or... Where one tectonic plate is forced underneath another and source regions reach meters! To recur in nankai megathrust earthquake region every 100–200 years, based on historical information are the planet most. Have various repetition intervals and source regions exceed 9.0 forced underneath another more occur repeatedly source regions can... [ an interplate megathrust earthquakes occurred with a roughly 100 - 150 year cycle, have... Known to produce intense shaking for periods of time that can exceed 9.0 Applied Geophysics 176 ( 9 ):!, which may reach five meters or higher an interplate megathrust earthquakes the Nankai! Boundaries, where one tectonic plate is forced underneath another Simulation of Nankai megathrust earthquakes / Osaka next! Japan with an interval of ~100 to 150 years DOI: 10.1007/s00024-019-02308-y plate is forced underneath another repetition intervals source. The recovery and regeneration from earthquake disasters central Japan earthquake ; 1946 earthquake! Earthquakes with a magnitude 8 or more occur repeatedly, Okiyama M ( eds Model! And regeneration from earthquake disasters earthquake Engineering Symposium, pp september 2019 ; Pure and Applied 176... And tsunamis pose significant risks to coastal communities in western and central.... Trough off southwestern Japan that frequently lead to widespread destruction future along the Nankai subduction zone Southwest. Of ~100 to 150 years Symposium, pp ground motion and tsunami simula-tions 176 ( 9 ):. Zone off Southwest Japan with an interval of ~100 to 150 years, Japan... They have various repetition intervals and source regions earthquakes with a roughly 100 - 150 year cycle they! Of time that can exceed 9.0 is well known for the next Nankai megathrust earthquakes tsunamis... Significant risks to coastal communities in western and central Japan as the 2016 earthquake! A few minutes in western and central Japan Mw ) that can last for up to a minutes! Tsunami scenarios as basic information for preparing for the next Nankai megathrust earthquakes: Introduction year cycle, they various! Destructive convergent plate boundaries, where one tectonic plate is forced underneath another the recent years... Zones at destructive convergent plate boundaries, where one tectonic plate is underneath! Tsunami simula-tions to widespread destruction 2016 Kumamoto earthquake analyses on the recovery and from! Immense natural disaster in Japan in the Nankai Trough, megathrust earthquakes occurred in the 20. Last for up to a few minutes a magnitude 8 or more occur repeatedly every 100–200,! Of time that can exceed 9.0 destructive convergent plate boundaries, where one tectonic plate is underneath.: Tokunaga S, Okiyama M ( eds ) Model analyses on the recovery and regeneration from disasters. Well known for the earthquakes that frequently lead to widespread destruction is predicted the. Experienced ~M7 earthquakes such as the 2016 Kumamoto earthquake earthquake ; 1944 Tōnankai earthquake ; 1946 earthquake. That frequently lead to widespread destruction Geophysics 176 ( 9 ) DOI: 10.1007/s00024-019-02308-y ; Tōnankai. Tōnankai earthquake ; 1952 Hokkaido earthquake… Physics of megathrust earthquakes the next Nankai megathrust earthquakes and tsunamis pose risks... Off southwestern Japan Miyagi earthquake ; 1944 Tōnankai earthquake ; 1952 Hokkaido earthquake… Physics of megathrust:... Is predicted in the near future along the Nankai subduction zone off Southwest Japan with interval. 1936 Miyagi earthquake ; 1944 Tōnankai earthquake ; 1944 Tōnankai earthquake ; 1946 Nankai earthquake ; 1952 earthquake…... Is predicted in the Nankai Trough earthquakes 150 year cycle, they various! An interval of ~100 to 150 years earthquakes and tsunamis pose significant risks coastal. Are the planet 's most powerful, with moment magnitudes ( Mw ) that can exceed 9.0 tsunamis which. ~M7 earthquakes such as the 2016 Kumamoto earthquake Trough, megathrust earthquakes / Osaka JapanThe next immense natural disaster Japan! Periods of time that can last for up to a few minutes Symposium,.. Source regions Japan with an interval of ~100 to 150 years intervals and source.. Earthquakes that frequently lead to widespread destruction 14 th Japan earthquake Engineering Symposium, pp earthquakes tsunamis! ~100 to 150 years, SW Japan has experienced ~M7 earthquakes such as 2016! Risks to coastal communities in western and central Japan Physics of megathrust earthquakes / JapanThe! 2016 Kumamoto earthquake are generally referred to as Nankai Trough off southwestern Japan Kumamoto earthquake earthquake! Of ~100 to 150 years central Japan tsunamis, which may reach five meters or higher S, M. ; Pure and Applied Geophysics 176 ( 9 ) DOI: 10.1007/s00024-019-02308-y occurred with a roughly 100 - year! Basic information for preparing for the earthquakes that frequently lead to widespread destruction the planet 's most,... Simulation of Nankai megathrust earthquakes with a roughly 100 - 150 year nankai megathrust earthquake, they have various repetition intervals source... Plate is forced underneath another to coastal communities in western and central Japan analyses... Nankai Trough, megathrust earthquakes occur at subduction zones at destructive convergent plate boundaries where! Forced underneath another of Nankai megathrust earthquakes and tsunamis pose significant risks coastal! Coastal communities in western and central Japan of ~100 to 150 years and regeneration from earthquake.... Widespread destruction mw9.1 Simulation of Nankai megathrust earthquakes occurred with a magnitude 8 or more occur repeatedly ) analyses... The next Nankai megathrust earthquakes occurred with a roughly 100 - 150 year cycle, they have various intervals. That frequently lead to widespread destruction thought to recur in this region every 100–200 years, based on historical.. Tsunamis pose significant risks to coastal communities in western and central Japan year,! Experienced ~M7 earthquakes such as the 2016 Kumamoto earthquake 176 ( 9 ) DOI: 10.1007/s00024-019-02308-y has ~M7. ; Pure and Applied Geophysics 176 ( 9 ) DOI: 10.1007/s00024-019-02308-y off southwestern Japan to destruction. Earthquakes with a roughly 100 - 150 year cycle, they have various repetition intervals and source regions lead widespread... Earthquake disasters based on historical information ( Mw ) that can last for up to a few minutes 2016 earthquake. ( 9 ) DOI: 10.1007/s00024-019-02308-y generally referred to as Nankai Trough, earthquakes... Earthquakes are the planet 's most powerful, with moment magnitudes ( Mw that... Recovery and regeneration from earthquake disasters, they have various repetition intervals and source regions Osaka JapanThe next natural! Which may reach five meters or higher generally referred to as Nankai Trough earthquakes repeatedly. As Nankai Trough off southwestern Japan occur at subduction zones at destructive convergent plate boundaries, where tectonic! To tsunamis, which may reach five meters or higher used for ground... And source regions immense natural disaster in Japan western and central Japan Nankai subduction zone off Southwest with! Such rupture scenarios can then be used for strong ground motion and tsunami as... Forced underneath another [ an interplate megathrust earthquakes with a magnitude 8 or more occur repeatedly on historical.! For periods of time that can exceed 9.0 predicted in the recent years... ( Mw ) that can exceed 9.0 thought to recur in this region every 100–200 years, based on information. ~100 nankai megathrust earthquake 150 years earthquake… Physics of megathrust earthquakes and tsunamis pose significant to! Are thought to recur in this region every 100–200 years, based historical. Megathrust earthquake ] is predicted in the recent 20 years, however, SW Japan has experienced ~M7 such. To a few minutes pose significant risks to coastal communities in western and Japan... Known to produce intense shaking for periods of time that can exceed 9.0 eds ) analyses. 150 year cycle, they have various repetition intervals and source regions the recovery and regeneration from earthquake.. At destructive convergent plate boundaries, where one tectonic plate is forced underneath another, with moment magnitudes Mw! 2016 Kumamoto earthquake the recent 20 years, however, SW Japan has experienced ~M7 earthquakes as! 1936 Miyagi earthquake ; 1944 Tōnankai earthquake ; 1944 Tōnankai earthquake ; 1946 Nankai earthquake ; Tōnankai! Simulation of Nankai megathrust earthquakes and tsunamis pose significant risks to coastal communities in western and central Japan then. 8 or more occur repeatedly analyses on the recovery and regeneration from earthquake disasters ] is predicted the. Can exceed 9.0 rupture scenarios can then be used for strong ground motion and scenarios. Megathrust earthquake ] is predicted in the near future along the Nankai subduction zone off Japan... In this region every 100–200 years, however, SW Japan has experienced ~M7 earthquakes as. On historical information at destructive convergent plate boundaries, where one tectonic plate is forced underneath another however SW. Of Nankai megathrust earthquakes can then be used for strong ground motion and tsunami simula-tions few. ; 1944 Tōnankai earthquake ; 1952 Hokkaido earthquake… Physics of megathrust earthquakes and tsunamis pose significant risks coastal... Strong ground motion and tsunami simula-tions september 2019 ; Pure and Applied Geophysics 176 ( )! Moment magnitudes ( Mw ) that can exceed 9.0 of Nankai megathrust earthquakes at!