Fig. 13

Along-arc vertical cross-section of earthquakes beneath Kyushu. Earthquakes that occurred in the rectangular region shown in Fig. 12 are shown as circles. The distance of each event from the east-southeastern edge of the rectangular region is shown as the color scale. The estimated northeastern prolongation of the Kyushu–Palau ridge from the top of the slab is shown as the thick, broken red line. Red triangles at the top denote volcanoes