Relax

It is not an acronym, it's a motto!

The open-source program Relax evaluates the displacement and stress in a half space with gravity due to dislocations, Mogi sources, and surface tractions; and the nonlinear time-dependent deformation that follows due to power-law rheology materials in the bulk and/or rate-strengthening friction faults. The numerical method is based on a Fourier-domain elastic Green's function (Barbot & Fialko, 2010a; 2010b) and an equivalent body-force representation of co-seismic and post-seismic deformation processes (Barbot et al., 2009b). Application of the method for the 2004 Mw 6 Parkfield earthquake can be found in the work of Barbot et al. (2009b) and Bruhat et al. (2011).

The possible applications for the earthquake-cycle modeling include: i) co-seismic displacement and Coulomb stress calculation, ii) quasi-static stress transfer between earthquakes due to a postseismic transient, iii) modeling of postseismic transients including nonlinear rheologies and multiple mechanisms, iv) cycle of multiple earthquakes and spin-up models, v) loading cycle of lakes or the monsoon. The distribution includes various examples for published coseismic slip distributions.

Current Release

Binaries

These binaries are suitable for use on single core/processor computers as well as multi-core or multi-processor computers. They can only be used on a single compute node of a cluster.

Relax-Win-1_0_1.zip [2012-5-16]

Binary version for Windows Vista and Windows 7.

Relax-Mac-1_0_1.dmg [2012-5-16]

Binary version for Mac OS X 10.5 (Leopard) or later.

Relax-Linux64-1_0_1.tgz [2012-5-16]

Binary version for 64 bit Linux.

Relax-Linux32-1_0_1.tgz [2012-5-16]

Binary version for 32 bit Linux.

Relax-Centos5-1_0_1.tgz [2012-5-16]

Binary version for 64 bit Centos 5 and RHEL 5.

Relax Users Map

Shows location of all users who downloaded RELAX since the code was released (image updated daily).

Development Version

The source code of Relax, along with the documentation and examples, can be found in the following tar ball:

Relax-1_0_1.tgz [2012-5-16]

Source code, documentation and examples.

If you are interested in checking out RELAX from the CIG repository, use the following Mercurial command:

hg clone http://geodynamics.org/hg/short/3D/relax relax

Documentation

RELAX User Manual [2011-12-02]

Documentation and Tutorials for Relax

Other Useful Tools

GMT

Open source collection of tools for manipulating data sets and producing Encapsulated PostScript files

ParaView

Scientific visualization tool

Help

To identify known issues, report bugs, request help, or provide feedback or suggestions:

• Browse and/or submit new issues at our RoundUp Bug Tracker.
• Browse the CIG Short-Term Crustal Dynamics Mailing List Archive.
• E-mail the CIG Short-Term Crustal Dynamics Mailing List with details of your problem or suggestion.