Structural Profile and Development of the Accretionary Complex in the Nankai Trough, Southwest Japan: Results of Submersible Studies - Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin - page 172

Fig. 1 Bathymetric features in the Nankai trough. ( a ) Bathymetric map of the accretionary com-
plex of the Nankai trough. Solid line with triangles indicates megasplay fault deduced form seis-
mic studies (see text). Solid red star : location of active cold seep (Modified from Ashi et al.
2002a ). Open star : fossil cold seep. Solid black stars : epicenters of the 1944 Tonankai and 1946
Nankai great earthquakes. Open circle : hole drilled by D/V Chikyu during IODP Expeditions 314,
315, 316 and 322. ( b ) Detailed bathymetrical map of the Shionomisaki canyon. ( c ) A sub-bottom
profile image along the mid-axis of the Shionomisaki canyon (indicated by white line in ( b )). Inset
in ( c ) indicates distribution of transverse ridge and depression developed upstream from the axis
of the 3rd ridge (see text)