Drilling along the Nankai Trough

An Integrated Land-Ocean Borehole Network for Monitoring a Plate Subduction Zone

The Nankai Trough is one of the world's best studied seismogenic subduction zone, where large megathrust earthquakes have repeatedly occurred every 90-150 years. The last major earthquakes in this region occurred in 1944 and 1946, and the next earthquake is anticipated in the middle of this century. This drilling in conjunction with the results from the IODP project NanTroSEIZE is aimed at comprehensive understanding of physical/chemical processes related to the recurrence of megathrust earthquakes in and around the plate interface.

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