10:45 AM - 11:00 AM
[U03-07] A new perspective of the subduction zone derived from the Ocean Drilling Program for the Nankai Trough Seismogenic Zone Experiments (NanTroSEIZE)
1)The Nankai forearc has been punctuated grown since ~6Ma and ~2Ma due to the rapid sediment supply from the land area and the hanging wall wedge for the great earthquakes has been set up as a result. 2)Slips along the plate boundary megathrust and its splay fault once run away to the trench and ocean floor. 3)The fault composed of sedimentary gouge is absolutely weak whichever in static or dynamic behavior. 4)In-situ stress conditions of the accretionary wedge and the outboard Philippine Sea Plate are well measured and tectonically loaded status suggests the build up of the stress for the next Nankai great earthquake. 5)Borehole observatories combined with ocean floor network documented the 2016, Aril 1 earthquake, tsunami and slow slips along the megathrust and presented an innovatively new science and technology in ocean floor science.