Science Advances

Supplementary Materials

This PDF file includes:

  • fig. S1. Plot of the Wellington CO2 Sequestration Monitoring network (ZA) earthquake catalog consisting of 1676 events ranging in M from 0.4 to 4.3 and depth from 1 to 11 km.
  • fig. S2. Depth and magnitude distributions of the 150 earthquakes used in this study.
  • fig. S3. Plot of the minimization of the second eigenvalue (λ2) in ϕ and δt space from waveforms shown in fig. S4.
  • fig. S4. Plot of raw channel data from station WK15 of an M 2.7 earthquake that occurred in July 2015.
  • fig. S5. Hodogram plots of 0.1-s increments corresponding to the 2-s time window identified in fig. S4.
  • fig. S6. Hodogram plot of S-wave splitting that aligns with the maximum horizontal stress at approximately 75° (marked with red dashed lines).
  • Additional Acknowledgments

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