Abstract
A key issue in the wave equation simulation of seismic records is the boundary conditions. Due to computer memory and computation and other restrictions, can only be solved on a limited area, which will cause the introduction of an artificial reflector. So as to simulation of seismic wave propagation in an infinite medium, the boundary conditions must be constructed so that the interface of the reflection as little as possible. In 2.5D VTI media feature analysis absorbing boundary of higher order velocity-stress staggered-grid finite difference method are established. The mixed boundary of the feature analysis absorbing boundary plus damping attenuation condition is used in 2.5 D VTI numerical simulations, simulation results show that this method is an efficient absorption and attenuation boundary conditions.
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