Inversion of Near-Surface Subsurface High Contrast Voids Using Seismic Refraction Tomography
Refractive seismic exploration is a geophysical method that utilizes refractive waves to study velocity changes in near-surface subsurface media and geological interfaces.This paper will discuss the high-frequency ray theory of refractive waves and the theoretical time-distance curves of the refracted waves in two to multi-layer horizontal strata.Traveltimes tomography inversion of refractive waves is used to imaging subsurface transverse velocity-varying media.A simulating example is used to illustrate the validity and usefulness of the method.
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