Stiffness Reduction Method for Finite-element Scheme Elastic Wave Modelling in Heterogeneous Media - An Alternative to PML

References

1. Bérenger, J. P.
   [1994] A perfectly matched layer for the absorption of electromagnetic waves. Journal of Computational Physics, 114, 185–200.
   [Google Scholar]
2. Komatitsch, D. and Tromp, J.
   [2003] A perfectly matched layer absorbing boundary condition for the second-order seismic wave equation. Geophysical Journal International, 154, 146–153.
   [Google Scholar]
3. Liu, Y., Teng, J., Lan, H., Si, X. and Ma, X.
   [2014] A comparative study of finite element and spectral element methods in seismic wavefield modeling. Geophysics, 79, T91–T104.
   [Google Scholar]
4. Marfurt, K. J.
   [1984] Accuracy of finite-difference and finite-element modeling of the scalar and elastic wave equations. Geophysics, 49, 533–549.
   [Google Scholar]
5. Matzen, R.
   [2011] An efficient finite element time-domain formulation for the elastic second-order wave equation: A non-split complex frequency shifted convolutional PML. International Journal For Numerical Methods In Engineering, 88, 951–973.
   [Google Scholar]
6. Pettit, J.R., Walker, A., Cawley, P. and Lowe, M.J.S.
   [2014] A Stiffness Reduction Method for efficient absorption of waves at boundaries for use in commercial Finite Element codes. Ultrasonics, 54, 1868–1879.
   [Google Scholar]
7. Sarma, G.S., Mallick, K. and Gadhinglajkar, V.R.
   [1998] Nonreflecting boundary condition in finite-element formulation for an elastic wave equation. Geophysics, 63, 1006–1016.
   [Google Scholar]
8. Zhao, J. and Shi, R.
   [2013] Perfectly matched layer-absorbing boundary condition for finite-element time-domain modeling of elastic wave equations. Applied Geophysics, 10, 323–336.
   [Google Scholar]