Fig. 9

Synthetics plotted against data stacks. The synthetics are generated by the Monte Carlo simulation for scattering models with different velocity variations and correlation lengths in the upper crust (a), whole crust (b), lower lithosphere (c) and whole lithosphere (d), respectively. The grey shading represents stacked data. The dashed lines denote the synthetics computed for the model without any scattering layers. In each column, the yellow, brown, blue and red lines represent the synthetics for models with RMS velocity perturbations (σ) of 3%, 5%, 7% and 9% as well as corresponding values of correlation lengths (a) in Table 2, respectively