Spectral element method for acoustic wave simulation in heterogeneous media

摘要: Abstract In this paper, we present a spectral element method for studying acoustic wave propagation in complex geological structures. Due to complexity (both lithological and stratigraphical), the use of numerical methods higher accuracy flexibility is needed achieve correct results. The shows more accurate results compared low-order finite element, conventional difference pseudospectral methods. High reached even rather long times dispersion errors are essentially eliminated; pirregular interfaces between different media can be well described so that artifacts or noises not at all introduced. tested against analytical solutions both two-dimensional homogenous heterogeneous media. simulations presented.