Using the University of Calgary Seismic Physical Modeling facility, we recorded common source on phenolic and acrylic solid slabs in order to characterize their velocity properties. P and S seismograms were recorded by placing piezoelectric transducers to the solid surfaces using different coupling techniques with various high-viscosity compounds. Analysis of various seismic gathers confirmed that the velocities of the acrylic plastic slab are isotropic. The P- and S-wave velocities of the phenolic slab are clearly orthorhombic. We observed how velocity anisotropy affected NMO stacking in different azimuthal directions, and determined the form of the non-hyperbolic stacking trajectories that must be applied in order to optimize the stack quality.
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