Supplementary dataset for "Improved 3-D P Wave Azimuthal Anisotropy Structure beneath the Tokyo Metropolitan Area, Japan: New interpretations of the Dual Subduction System Revealed by Seismic Anisotropy"

Here, we provide supporting information for (1) the seismic data used in this study, (2) resultant isotropic velocity structure, and (3) the interpretation of the anisotropic tomography images. Contents: (1)-1 List of seismic stations used in this analysis (1)-2 Comparison of hypocenter distribution between before and after a 1-D simultaneous inversion (2) The isotropic Vp velocity structure obtained by isotropic tomography analysis and that by anisotropic velocity analysis, and the difference between the two. (3) Original vertical cross-sections of Figure 7 (without interpretation).