TY - GEN
T1 - Optimal fourth-order staggered-grid finitedifference scheme for 3D frequency-domain viscoelastic wave modeling
AU - Li, Y.
AU - Han, B.
AU - Chen, Y.
AU - He, Q.
PY - 2015
Y1 - 2015
N2 - Frequency-domain seismic wave modeling has been extensively investigated and applied within the framework of seismic imaging techniques, such as the full waveform inversion (FWI) and the reverse time migration (RTM). Among different discretization approaches, finite-difference schemes has been gaining popularity due to its simplicity and computational efficiency. We investigate an optimal fourth-order staggered-grid finite-difference scheme for 3D frequency-domain viscoelastic wave modeling. The finitedifference coefficients and the anti-lumped mass weighting coefficients are obtained by minimizing the misfit between the normalized phase velocities and the unity. Numerical dispersion analysis shows that the optimal fourth-order scheme presents less dispersion and anisotropy with respect to different propagation angles, and requires only 4 gridpoints per minimum shear wavelength to keep the error of the group velocities below 1%. Elastic wave modeling in a 3D homogeneous medium at different frequencies are conducted with the optimal fourth-order scheme.
AB - Frequency-domain seismic wave modeling has been extensively investigated and applied within the framework of seismic imaging techniques, such as the full waveform inversion (FWI) and the reverse time migration (RTM). Among different discretization approaches, finite-difference schemes has been gaining popularity due to its simplicity and computational efficiency. We investigate an optimal fourth-order staggered-grid finite-difference scheme for 3D frequency-domain viscoelastic wave modeling. The finitedifference coefficients and the anti-lumped mass weighting coefficients are obtained by minimizing the misfit between the normalized phase velocities and the unity. Numerical dispersion analysis shows that the optimal fourth-order scheme presents less dispersion and anisotropy with respect to different propagation angles, and requires only 4 gridpoints per minimum shear wavelength to keep the error of the group velocities below 1%. Elastic wave modeling in a 3D homogeneous medium at different frequencies are conducted with the optimal fourth-order scheme.
UR - https://www.scopus.com/pages/publications/85037540356
U2 - 10.3997/2214-4609.201413341
DO - 10.3997/2214-4609.201413341
M3 - 会议稿件
AN - SCOPUS:85037540356
T3 - 77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment
SP - 3547
EP - 3551
BT - 77th EAGE Conference and Exhibition 2015
PB - European Association of Geoscientists and Engineers, EAGE
T2 - 77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment
Y2 - 1 June 2015 through 4 June 2015
ER -