Fig. 1

Regional map of the Kumano transect in the Nankai Trough. a Map view of drilled sites in NanTroSEIZE project. Background color and contours show the bathymetry. White dots are the NanTroSEIZE drilling sites. A seismic line shown in b is presented by a black line. b Seismic profile along the Kumano transect after Figure F2A of Tobin et al. (2020)