Fig. 6From: Seismic structure of rifting in the Okinawa Trough, an active backarc basin of the Ryukyu (Nansei-Shoto) island arc–trench systemResults of the checkerboard test for each P wave velocity model shown in Fig. 5. Ray coverage is also plotted from the forward modeling, including reflection waves. The ray paths correspond to manual readings on the observed record sections for each seismic lineBack to article page