Supplementary figure captions:

SF 1-1. Time series data of vertical effective stress (sigma'v) and basal excess pore pressure (delta u).
SF 1-2. Time series data of vertical effective stress (sigma'v) and basal excess pore pressure (delta u).
SF 1-3. Time series data of vertical effective stress (sigma'v) and basal excess pore pressure (delta u).
SF 2. CRS test results for specimen MU-12, Sample 315-C0002B-10R-3, 8-23 cm.
SF 3. CRS test results for specimen MU-13, Sample 315-C0002B-20R-3, 54-70 cm.
SF 4. CRS test results for specimen MU-14, Sample 315-C0002B-31R-1, 126-141 cm.
SF 5. CRS test results for specimen MU-15, Sample 315-C0002B-40R-3, 75-91 cm.
SF 6. CRS test results for specimen MU-16, Sample 315-C0002B-47R-1, 38-54 cm.
SF 7. CRS test results for specimen MU-17, Sample 315-C0002B-48R-6, 65-81 cm.
SF 8. CRS test results for specimen MU-18, Sample 315-C0002B-49R-1, 113-140 cm.
SF 9. CRS test results for specimen MU-19, Sample 316-C0006E-5H-1, 128-143 cm.
SF 10. CRS test results for specimen MU-20, Sample 316-C0006E-16X-1, 113-128 cm.
SF 11. CRS test results for specimen MU-21, Sample 316-C0006E-22X-6, 5-20 cm.
SF 12. CRS test results for specimen MU-22, Sample 316-C0006E-26X-1, 126-147.5 cm.
SF 13. CRS test results for specimen MU-23, Sample 316-C0006E-34X-3, 59-95.5 cm.
SF 14. CRS test results for specimen MU-24, Sample 316-C0007C-3H-3, 104-110.5 cm.
SF 15. CRS test results for specimen MU-25, Sample 316-C0007D-25R-2, 66-80 cm.
SF 16. CRS test results for specimen PSU-90, Sample 315-C0002B-17R-4, 8-32 cm.
SF 17. CRS test results for specimen PSU-96, Sample 315-C0002B-28R-2, 8-28 cm.
SF 18. CRS test results for specimen PSU-102, Sample 315-C0002B-28R-2, 8-28 cm.
SF 19. CRS test results for specimen PSU-105, 315-C0002B-41R-4, 8-28 cm.