[CIG-ALL] SPECFEM3D 2.0.0
dpeter at Princeton.EDU
Mon Nov 29 17:02:32 PST 2010
We are pleased to announce the release of version 2.0.0, named
"Sesame", of SPECFEM3D:
SPECFEM3D "Sesame" uses the continuous Galerkin spectral-element
method, which can be seen as a particular case of the discontinuous
Galerkin technique with optimized efficiency owing to its tensorized
basis functions, to simulate forward and adjoint coupled acoustic-
(an)elastic seismic wave propagation on arbitrary unstructured
This major new release benefits from advances in hexahedral meshing,
load balancing and code optimizations. We strongly encourage users to
switch to this new version, which has far greater flexibility than
The main changes in version 2.0.0 are:
- Meshing may be accomplished using a mesh generation tool kit such
as CUBIT, GiD or Gmsh, and load balancing is facilitated by graph
partitioning based on the SCOTCH library, which is included in the
package. The previous internal layer cake mesher has been extended to
allow greater flexibility and also continues to be available.
- Topography, bathymetry and Moho undulations are readily included in
a mesh, and physical dispersion and attenuation associated with
anelasticity are accounted for using a series of standard linear solids.
- Coupling between fluid and solid regions is accommodated using
domain decomposition, thereby facilitating off-shore simulations.
- Finite-frequency Fréchet derivatives for earthquake and seismic
interferometric data are calculated based on adjoint methods in both
fluid and solid domains, thereby facilitating "adjoint tomography"
with earthquakes and seismic noise.
Please e-mail your feedback, questions, comments, suggestions, and bug
reports to the CIG Computational Seismology mailing list (cig-seismo
Daniel Peter, Dimitri Komatitsch, Jeroen Tromp
November 29, 2010.
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