Actively supported, maintained and upgraded by community contributors.

How to Cite

Code changes:

Geodynamics Forum

Bug reports:
Github Issue Tracker

GNU Public License


SPECFEM1D simulates seismic wave propagation in a one-dimensional heterogeneous medium. It is a small code that allows users to learn how a spectral-element program is written.

Current Release

Source Packages

Current Stable Release

To obtain the latest stable release of the code, use the following git command:
git clone --recursive

View Prior Source Releases

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SPECFEM1D-1.0.4.tar.gz [2013-06-07]

Source code, version 1.0.4, with comments.

SPECFEM1D-1.0.3.tar.gz [2012-05-01]

Source code, version 1.0.3, with comments.

User Resources

Community Wiki

Visit the SPECFEM1D Wiki page for additional support with building, using, or modifying SPECFEM1D.

SPECFEM1D Publications List

Research publications using SPECFEM1D.

Community Discussion

Browse the CIG Mailing List Archive to find past discussions and previous troubleshooting help, or post to the CIG forum with questions or comments.

Developer Resources

Development Version

If you are interested in getting the development version of this code from the CIG repository, use the following git command:

git clone --recursive

You can also browse the history of modifications in the Git repository.

Issue/Bug Tracker on Github

Browse and/or submit new issues at our Github Issues Tracker.

Doxygen Documentation

Auto-generated Doxygen documentation is available for the Development and Release codebases.


Shows location of all users who downloaded SPECFEM1D in the past year (image updated daily.)

map showing location of all users who downloaded SPECFEM1D in the last year (image updated daily)
This image was generated using GMT: The Generic Mapping Tools which is released under the GNU LGPL3+. Location data is based on MaxMind's GeoLite database which is released under the Creative Commons CC-BY-SA 3.0.
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