Global Rayleigh wave amplitude dataset (van Heijst and Woodhouse, 1997, 1999).

The global vertical-component Rayleigh wave amplitude dataset made by Hendrik van Heijst and John Woodhouse. See README for information. Citations: van Heijst, H.J. and Woodhouse, J., 1997. Measuring surface-wave overtone phase velocities using a mode-branch stripping technique. Geophysical Journal International, 131(2), pp.209-230. Jan van Heijst, Hendrik, and John Woodhouse. "Global high-resolution phase velocity distributions of overtone and fundamental-mode surface waves determined by mode branch stripping." Geophysical Journal International 137.3 (1999): 601-620.