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By N. Anders Petersson1, Bjorn Sjögreen1

1. Lawrence Livermore National Laboratory

Body Text

We use SW4 2.01 ( Sjögreen and Petersson, 2012; Petersson and Sjögreen, 2012; Petersson and Sjögreen, 2017; Petersson and Sjögreen, 2015; Petersson and Sjögreen, 2017) published under the GPL 2 license.


We thank the Computational Infrastructure for Geodynamics ( which is funded by the National Science Foundation under awards EAR-0949446 and EAR-1550901.

Cite Code As

Petersson, N.A.; Sjögreen, B. (2017), SW4, version 2.01 [software], Computational Infrastructure of Geodynamics, doi: 10.5281/zenodo.1063644, url:

Primary References

Sjögreen, B.; Petersson, N.A. (2012), A Fourth Order Accurate Finite Difference Scheme for the Elastic Wave Equation in Second Order Formulation, Journal of Scientific Computing, 52 (1) , 17-48, doi: 10.1007/s10915-011-9531-1, url:

Petersson, N.A.; Sjögreen, B. (2012), Stable and efficient modeling of anelastic attenuation in seismic wave propagation, Communications in Computational Physics, 12 (01) , 193-225

Petersson, N.A.; Sjögreen, B. (2017), User's guide to SW4, version 2.0, LLNL-SM-741439 (LLNL-SM-741439)

Petersson, N.A.; Sjögreen, B. (2015), Wave propagation in anisotropic elastic materials and curvilinear coordinates using a summation-by-parts finite difference method, Journal of Computational Physics, 299, 820-841, doi: 10.1016/, url:


For previous versions, Primary References and Acknowledgements are the same as above.  For other fields, please substitute the appropriate version and year.