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Seismic Elastic Wave Modeling with an Adaptive Staggered Grid in Tilted Transversely Isotropic Media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, EAGE 2020 Annual Conference & Exhibition Online, Dec 2020, Volume 2020, p.1 - 5
Abstract
Recent advances in seismic data processing with multi-component data have shown contributions from elastic waves in tilted transversely isotropic (TTI) media. To obtain better understanding of the elastic wave propagation in TTI media, finite difference elastic modeling is becoming valuable. However, a standard staggered grid scheme require additional interpolation between certain field variables for off-diagonal derivatives, which may reduce accuracy with significant memory allocation and considerable computation time. To overcome such issues, an adaptive Lebedev staggered grid scheme is developed for TTI elastic modeling. It reduces memory usage and computation time with stable results. The preliminary experiments demonstrate the accuracy and efficiency of this scheme.