Supplementary Figure 3: Comparison of density models with various parameterisations

Supplementary Figure 3A

Correlation between density models obtained with different parameterizations. The red curve is the correlation between the density models of SPRD6 (S velocity, P velocity, density, and boundary topography), and SBRD6 (S velocity, bulk sound velocity, density, and boundary topography), the blue curve is the correlation between SPRD6 and the density part of MKRD6 (rigidity, incompressibility, density, and boundary topography), and the black curve is the correlation between the density parts of SBRD6 and MKRD6. The resulting density models are all highly correlated.

Supplementary Figure 3B

RMS amplitude of the density part of SPRD6 (blue), SBRD6 (red), and MKRD6 (black) as a function of depth. The RMS of the three models is similar.