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The software package SPECFEM3D_GLOBE simulates global and regional (continental-scale) seismic wave propagation. Effects due to lateral variations in compressional-wave speed, shear-wave speed, density, a 3-D crustal model, ellipticity, topography and bathymetry, the oceans, rotation, and self-gravitation are all included. Recent new features include full 21-parameter anisotropy and lateral variations in attenuation.
Latest Release
Documentation
SPECFEM3D GLOBE User Manual (PDF)
For a detailed description of the method and its capabilities, see:
Komatitsch, D., and Tromp, J., 2002. Spectral-element simulations of
global seismic wave propagation -I. Validation, Geophys. J. Int.,
vol. 149, p.390-412. (PDF reprint)
Komatitsch, D., and Tromp, J., 2002. Spectral-element simulations of global seismic wave propagation -II. 3-D models, oceans, rotation,
and gravity, Geophys. J. Int., vol. 150, p. 303-318. (PDF reprint)
Komatitsch, D., Ritsema, J. and Tromp, J., 2002. The spectral-element
method, Beowulf computing and global seismology, Science, 298,1737-1742.
(PDF reprint)Seismic Wave Propagation in Sedimentary Basins
The software package SPECFEM3D simulates seismic wave propagation in sedimentary basin. The mesh generator is specifically written for the simulation of wave propagation in southern California but can be modified for use in other geographical areas. The solver is completely general and can be used to simulate seismic wave propagation on regional and local scales.
Latest Release
Documentation
SPECFEM3D User Manual
For a detailed description of the method and its capabilities, see:
Komatitsch, D., and Tromp, J., 1999. Introduction to the spectral-element method for 3-D seismic wave propagation, Geophys. J. Int., 139, 806-822. (PDF reprint)
Komatitsch, D., Liu, Q., Tromp, J., Süss, P., Stidham, C., and Shaw, J., 2004. Simulations of ground motion in the Los Angeles basin based upon the spectral-element method, Bull. Seism. Soc. Amer., 94, No.1, 187-206.(PDF reprint)
Both pakages are witten in Fortran90, are Fortran95 compliant, and use the Message-Passing Interface (MPI).
The software is open source and freely available for academic use. Commercial lincences may be negotiated through the Office of Technology Transfer of the California Institute of Technology.
Riding the Seismic wave. (PDF)
© California Institute of Technology