Science Advances

Supplementary Materials

This PDF file includes:

  • Weighting factor
  • Resolution and robustness tests
  • fig. S1. Data statistics.
  • fig. S2. Initial models for 3D inversions.
  • fig. S3. Trade-off with shallow structure.
  • fig. S4. Simultaneous inversion for D″ and shallow upper mantle structures.
  • fig. S5. Possibility of contamination due to shallow structure.
  • fig. S6. Checkerboard test.
  • fig. S7. Checkerboard test with artificial noise.
  • fig. S8. Block tests.
  • fig. S9. Record section for the block test model.
  • fig. S10. Nonlinear checkerboard test.
  • fig. S11. Jackknife test.
  • fig. S12. Inversion of western, central, and eastern data sets.
  • fig. S13. Quality control stacks.
  • fig. S14. Point-spread function.
  • fig. S15. Crossing raypaths.
  • table S1. Earthquakes used in this study.
  • table S2. Variance and AIC.

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