Fig. 7

Migration image of Ps wave projected onto the reflection image. a Migration image of Ps waves in the TDWs along A–A’. The light-blue lines show the geometries of megasplay fault and the top of the oceanic crust (Shiraishi et al. 2019). The arrows indicate large Ps amplitudes, which correspond to the megasplay fault and a fault between the megasplay fault and the top of the oceanic crust. b Migration image of AD-Ps of (a) projected onto the reflection image along the ENE-WSW trending yellow line in Fig. 1b (Shiraishi et al. 2019)