Figure S9.
Figure S7. Map view images of isotopic \(V_{P}\) tomography obtained with the same grid and parameter settings as those in Toyokuni et al. (2020a). The layer depth is shown at the lower-right corner of each panel. Blue and red colors denote high and low \(V_{P}\)perturbations, respectively, whose scale (in %) is shown on the right. Areas with hit counts < 5 are masked in white. The red triangles, red dots, black triangles, and thin black lines denote active volcanoes, hot springs, seismic stations, and plate boundaries, respectively. For comparison, the layout of this figure is exactly the same as that of Figure 4 in Toyokuni et al. (2020a).
Figure S8. Vertical cross-sections of isotopic V_P tomography obtained with the same grid and parameter settings as those in Toyokuni et al. (2020a) along (a) nine N-S oriented profiles and(b) nine E-W oriented profiles. Locations of the profiles are shown on the inset maps. The 250-km depth, and the 410 and 660 km discontinuities are indicated by black solid lines. The thick black lines on the surface denote land areas. Active volcanoes within a ±2° width of each profile are shown as red triangles. For comparison, the layout of this figure is exactly the same as that of Figure 5 in Toyokuni et al. (2020a).
Figure S9. Same as Figure S8 but with (a) seven NW-SE oriented profiles and (b) seven NE-SW oriented profiles. For comparison, the layout of this figure is exactly the same as that of Figure 6 in Toyokuni et al. (2020a).