1887

Abstract

Summary

High-order finite-difference (FD) methods have been widely used in numerically solving seismic wave equations. Under the same accuracy, the least square-based (LS) optimal FD method for the 3D acoustic wave equation can improve the computational efficiency compared with the Taylor series expansion-based FD method. To increase the efficiency further, we introduce the scheme of adaptive variable-length spatial operators. The hybrid absorbing boundary condition is adopted to suppress the artificial reflections caused by the finite boundary. Dispersion analysis and modelling examples demonstrate advantages and accuracy of the LSM.

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/content/papers/10.3997/2214-4609.20140815
2014-06-16
2024-03-28
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References

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