SUMMARY Numerical experiments of seismic wave propagation in a laterally homogeneous layered medium explore subsurface imaging at subwavelength distances for dense arrays. We choose time-reversal approach to simulate fundamental mode Rayleigh surface wavefields that are equivalent the cross-correlation results three-component ambient field records. demonstrate synthesized 2-D spatial autocorrel...

To better assess quality of 3-D tomographic images and to better define possible improvements to tomographic inversion procedures, one must consider not only data quality and numerical precision of forward and inverse solvers but also appropriateness of model parametrization and display of results. The quality of the forward solution, in particular, strongly depends on parametrization of the ve...