1887

Abstract

Summary

The explicit spatial finite-difference (ESFD) method has been widely adopted for the scalar wave simulation. While the implicit stencils can effectively improve the accuracy and stability in numerical modelling compared to the ESFD. In this paper, we calculate the implicit spatial finite-difference (ISFD) coefficients by Taylor-series expansion method (TEM) and least-square method (LSM), respectively. The accuracy analysis and numerical modelling results demonstrate that the proposed LSM-ISFD method can achieve higher accuracy than the conventional TEM-based ISFD scheme.

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/content/papers/10.3997/2214-4609.201800969
2018-06-11
2020-12-01
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References

  1. Liu,Y. andSen,M. K.
    [2009]An implicit staggered-grid finite-difference method for seismic modelling.Geophysics Journal International,179(1),459–474.
    [Google Scholar]
  2. Yang,L.,Yan,H. andLiu,H.
    [2016]Optimal implicit staggered-grid finite-difference schemes based on the sampling approximation method for seismic modelling.Geophysical Prospecting,64(3),595–610.
    [Google Scholar]
  3. Chu,C. andStoffa,P. L.
    [2012]Implicit finite-difference simulations of seismic wave propagation.Geophysics,77(77),T57–T67.
    [Google Scholar]
  4. Liu,Y.
    [2013]Globally optimal finite-difference schemes based on least squares.Geophysics,78(4),T113–T132.
    [Google Scholar]
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