Fig. 4
From: Deep subduction of the Philippine Sea slab and formation of slab window beneath central Japan
Vertical cross sections of the seismic structures obtained by the tomographic analysis. Warmer colors indicate lower velocities, and colder colors indicate higher velocities. Each panels show the cross section corresponding to profile A1-A7 in the map.  The dotted line in each cross section indicates the subducted PHS slab from the latest PHS slab model (Fig. 1). Solid black lines represent the surfaces of the Conrad (shallowest), Moho, and PAC slab (deepest). Black circles denote the earthquake hypocenters within 10 km of each cross section. Black bars and red triangles in the upper part of each cross section indicate the land areas and volcanoes, respectively. Shaded areas have a recovery rate of < 15%. Locations of the cross sections are shown in the map at the bottom of the figure