This PDF file includes:

• fig. S1. SNR of the reference correlations.
  
• fig. S2. Seismic noise spectrograms.
  
• fig. S3. Characteristics of the analysis window used to measure the velocity variations for each station pair.
  
• fig. S4. Viscoelastic modeling: Vertical distribution of stress due to the ice sheet load.
  
• fig. S5. Estimation of z_t and m/μ.
  
• fig. S6. Influence of the number of correlations stacked.
  
• fig. S7. Influence of the symmetrization of the correlation on the dv/v measurements (ILULI-SFJ).
  
• fig. S8. Influence of the analysis-window length on the dv/v uncertainties.
  
• fig. S9. Effect of the analysis-window start time for the pair ILULI-NUUG (60-day stack, 0.1- to 0.3-Hz band, 300-s window).
  
• fig. S10. Example of doublet measurements for NRS-IVI and comparison with the stretching method.
  
• fig. S11. Example of doublet measurements for ILULI-SFJ and comparison with the stretching method.

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