Early-arrival waveform inversion for near-surface velocity and anisotropic parameters: inversion of synthetic data

Examples

In this section, I compare the effectiveness of inversion model parametrization using two synthetic examples. In the first example, I illustrate the ambiguity between vertical velocity and $\epsilon$ , and then compare joint inversion results using the two different model parametrizations (equations 2, 3). In the second example, I compare joint inversion results using the two different parametrizations, as well as results from isotropic inversion. In both examples, I set $\delta$ to zero in both the true model and starting model, since it has very little effect on early-arrival kinematics.