Fdtd algorithm1/3/2023 ![]() ![]() Reshef, 1985, A nonreflecting boundary condition for discrete acoustic and elastic wave equations: Geophysics GPYSA7 0016-8033, 50, 705–708. ![]() Kosloff, 1988b, Wave propagation simulation in a linear viscoelastic medium: Geophysical Journal of the Royal Astronomical Society GEOJAN 0016-8009, 95, 597–611. Kosloff, 1988a, Wave propagation simulation in a linear viscoelastic medium: Geophysical Journal of the Royal Astronomical Society GEOJAN 0016-8009, 93, 393–407. , 2001, Wave fields in real media: Wave propagation in anisotropic, anelastic and porous media: Elsevier Science Publ. Bohlen, T., 2002, Parallel 3-D viscoelastic finite difference seismic modelling: Computer and Geosciences CGEODT 0098-3004, 28, 887–899.10.1190/1.1443635 Abstract Web of Science Google Scholar , 1994, AVO in transversely isotropic media-An overview: Geophysics GPYSA7 0016-8033, 49, 775–781. Foster, eds., Comparison of seismic inversion methods on a single real data set: SEG, 13–44. Versteeg, 1998, A numerical study of linear viscoacoustic inversion, in R. 10.1190/1.1443744 Abstract Web of Science Google Scholar Symes, 1995, Modeling of a constant Q: Methodology and algorithm for an efficient and optimally inexpensive viscoelastic technique: Geophysics GPYSA7 0016-8033, 60, 176–184. 10.1190/1.1759468 Abstract Web of Science Google Scholar Pabon, 2004, Finite-difference modeling of viscoelastic materials with quality factor of arbitrary magnitude: Geophysics GPYSA7 0016-8033, 69, 817–824. 10.1190/1.1441823 Abstract Web of Science Google Scholar Mendel, 1985, Synthetic vertical seismic profiles for nonnormal incident plane waves: Geophysics GPYSA7 0016-8033, 50, 127–141. ![]() The technique is then used to estimate the plane-wave responses of a sedimentary system to normal and inclined incident waves in the Kanto area of Japan via synthetic vertical seismic profiles. The proposed algorithm is able to calculate synthetic waveforms efficiently and represent viscoelastic attenuation even in very attenuative media. Comparing the finite-difference solutions to their corresponding analytical results, we find that the methods are sufficiently accurate. The scheme uses a 1D grid that reduces computation time and memory requirements significantly more than corresponding 2D or 3D computations. An FDTD staggered-grid technique is used to numerically solve the derived plane-wave equations. Arbitrary values of the quality factor for P- and S-waves ( Q P and Q S) are incorporated into the wave equation via a generalized Zener body rheological model. In the algorithm, the wave equation is rewritten for plane waves by applying a Radon transform to the 2D general wave equation. We propose an efficient algorithm for modeling seismic plane-wave propagation in vertically heterogeneous viscoelastic media using a finite-difference time-domain (FDTD) technique. ![]()
0 Comments
Leave a Reply.AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |