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Figure F1. A. Bathymetric map, Nankai Trough off southwestern Japan is the locus of subduction of the Philippine Sea plate (PSP) beneath Honshu and Shikoku islands. Arrow = convergence direction between PSP and Japan. Rupture zones of the last two large subduction earthquakes (1944 and 1946) are also shown. Stars = epicenter locations for earthquake nucleation. Red dashed line = Expedition 322 drilling area shown in B. Inset shows location of Nankai Trough. EP = Eurasian plate, PP = Pacific plate, NAP = North American plate. (Continued on next page.)

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