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  1. TauP

    29 Feb 2024 | Software: Download | Contributor(s): H. Philip Crotwell (primary-developer), Thomas J. Owens

    The TauP Toolkit is a seismic travel time calculator. In addition to travel times, it can calculate derivative information such as ray paths through the earth, pierce and turning points. It handles many types of velocity models and can calculate times for virtually any seismic phase with a...

  2. 2020 Crustal Deformation Modeling Workshop Report

    27 Jul 2022 | Workshops | Contributor(s): Brad Aagaard, Sylvain Barbot, Brittany Erickson, Matthew Knepley, Mark Simons, Charles Williams

    Workshop report

  3. SPECFEM3D Cartesian

    30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (primary-developer), Jeroen Tromp (primary-developer), Daniel Peter (primary-developer), SPECFEM Development Team

    SPECFEM3D Cartesian simulates acoustic (fluid), elastic (solid), coupled acoustic/elastic, poroelastic or seismic wave propagation in any type of conforming mesh of hexahedra (structured or not.) It can, for instance, model seismic waves propagating in sedimentary basins or any other regional...

  4. SPECFEM3D GLOBE

    30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte, Jeroen Tromp (primary-developer), Daniel Peter (primary-developer), SPECFEM Development Team

    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 3D crustal model, ellipticity, topography and bathymetry, the oceans, rotation, and self-gravitation are all...

  5. SPECFEM3D_GEOTECH

    29 Oct 2021 | Software: Download | Contributor(s): Hom Nath Gharti, Dimitri Komatitsch, Leah Langer, Roland Martin, Voker Oye, Jeroen Tromp, Uno Vaaland, Zhenshen Yan

    SPECFEM3D_GEOTECH is an open-source command-driven software for 3D slope stability analysis and simulation of 3D multistage excavation based on the spectral-element method.SPECFEM3D_GEOTECH is a free and open-source command-driven software for 3D slope stability analysis (for more details see...

  6. SPECFEM2D

    29 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (primary-developer), Daniel Peter (primary-developer), SPECFEM Software Development Team

    SPECFEM2D simulates forward and adjoint seismic wave propagation in two-dimensional acoustic, (an)elastic, poroelastic or coupled acoustic-(an)elastic-poroelastic media, with Convolution PML absorbing conditions.Meshing is based for instance upon Gmsh, Cubit, GiD or a...

  7. SPECFEM1D

    29 Oct 2021 | Software: Download | Contributor(s): SPECFEM Development Team

    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.See specfem.org.

  8. SW4

    29 Oct 2021 | Software: Download | Contributor(s): N. Anders Petersson, Bjorn Sjögreen, Houjun Tang, Ramesh Pankajakshan

    SW4 implements substantial capabilities for 3-D seismic modeling, with a free surface condition on the top boundary, absorbing super-grid conditions on the far-field boundaries, and an arbitrary number of point force and/or point moment tensor source terms. Each source time function can have one...

  9. AxiSEM

    28 Oct 2021 | Software: Download | Contributor(s): Tarje Nissen-Meyer (primary-developer), Martin van Driel (primary-developer), Simon Stähler (primary-developer), Kasra Hosseini (primary-developer), Stefanie Hempel (primary-developer), Lion Krischer (primary-developer), Alexandre Fournier (primary-developer)

    AxiSEM is a parallel spectral-element method for 3D (an-)elastic, anisotropic and acoustic wave propagation in spherical domains. It requires axisymmetric background models and runs within a 2D computational domain, thereby reaching all desired highest observable frequencies (up to 2Hz) in global...

  10. SEISMIC_CPML

    28 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch, Roland Martin

    SEISMIC_CPML is a set of eleven open-source Fortran90 programs to solve the two-dimensional or three-dimensional isotropic or anisotropic elastic, viscoelastic or poroelastic wave equation using a finite-difference method with Convolutional or Auxiliary Perfectly Matched Layer (C-PML or...

  11. FLEXWIN

    28 Oct 2021 | Software: Download | Contributor(s): Alessia Maggi

    The FLEXWIN software package automates the time-window selection problem for seismologists. It operates on pairs of observed and synthetic single component seismograms, defining windows that cover as much of a given seismogram as possible, while avoiding portions of the waveform that are...

  12. Mineos

    28 Oct 2021 | Software: Download | Contributor(s): Guy Masters (primary-developer), John Woodhouse (primary-developer), Freeman Gilbert (primary-developer), Michael Ritzwoller (primary-developer), Misha Barmine, Sue Kientz

    Mineos computes synthetic seismograms in a spherically symmetric non-rotating Earth by summing normal modes.Attenuation, gravity and transversal anisotropy effects may be optionally taken into account. The package computes mode eigenfrequencies and eigenfunctions, Green's functions and...

  13. PyLith

    27 Oct 2021 | Software: Download | Contributor(s): Brad Aagaard (primary-developer), Charles A. Williams (primary-developer), Matthew Knepley (primary-developer)

    PyLith is a finite-element code for dynamic and quasistatic simulations of crustal deformation, primarily earthquakes and volcanoes.Binary packages are available for macOS and Linux. Detailed installation instructions for the binary packages are in the PyLith manual. Use the PyLith...

  14. Relax

    26 Oct 2021 | Software: Download | Contributor(s): Sylvain Barbot (primary-developer)

    Relax implements a semi-analytic Fourier-domain solver and equivalent body forces to compute quasi-static relaxation of stress perturbation.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...

  15. Virtual Quake

    26 Oct 2021 | Software: Download | Contributor(s): John M. Wilson, Kasey W. Schultz, Eric M. Heiein, Michael K. Sacks, John B. Rundle

    Virtual Quake (formerly Virtual California) is a boundary element code that performs simulations of fault systems based on stress interactions between fault elements to understand long term statistical behavior.

  16. SELEN

    25 Oct 2021 | Software: Download | Contributor(s): Giorgio Spada (primary-developer), Daniele Melini (primary-developer)

    SELEN: a program for solving the "Sea Level Equation.The open source program SELEN solves numerically the so-called "Sea Level Equation" (SLE) for a spherical, layered, non-rotating Earth with Maxwell viscoelastic rheology. The SLE is an integral equation that was introduced in...

  17. LithoMop

    22 Oct 2021 | Software: Download | Contributor(s): Charles A. Williams (primary-developer)

    LithoMop is a finite element code for the solution of the visco-elastic/plastic deformation that was designed for lithospheric modeling problems.A newer version of LithoMop, called PyLith, has been released by CIG.

  18. Responsibilities of Working Groups

    12 Oct 2021 | Documents | Contributor(s): Executive Committee, Science Steering Committee

    Roles and responsibilities of Working Groups.Approved 24 August 2021.

  19. Responsibilities of the SSC

    12 Oct 2021 | Documents | Contributor(s): Executive Committee, Science Steering Commitee

    Roles and responsibilities of the Science Steering Committee.Approved 24 August 2021.

  20. Responsibilities of the EC

    12 Oct 2021 | Documents | Contributor(s): Executive Committee, Science Steering Committee

    Describes the roles and responsibilities of the Executive Committee.Approved 24 August 2021

  21. BurnMan

    14 Sep 2021 | Software: Download | Contributor(s): Sanne Cottaar, Timo Heister, Robert Myhill, Ian Rose, Cayman Unterborn

    BurnMan is an open source mineral physics toolbox written in Python to determine seismic velocities for the lower mantle. BurnMan calculates the isotropic thermoelastic moduli by solving the equations-of-state for a mixture of minerals defined by the user. The user may select from a list of...

  22. Extended Finite Element Methods for Crustal Deformation Simulation

    30 Mar 2021 | Workshops | Contributor(s): Ethan Coon, Bruce Shaw, Marc Spiegelman

    Extended Finite Element Methods for Crustal Deformation Simulation. June 14-18, 2010. Ethan Coon. 

  23. Tomography of the Mojavian Lithosphere Viscosity from Space Geodetic data of the Landers and Hector Mine Earthquakes

    30 Mar 2021 | Workshops | Contributor(s): Sylvain Barbot, Yuri Fialko

    Tomography of the Mojavian Lithosphere Viscosity from Space Geodetic data of the Landers and Hector Mine Earthquakes. June 14-18, 2010. Sylvain Barbot. 

  24. 3D numerical mechanical modeling of the southern San Andreas Fault system

    30 Mar 2021 | Workshops | Contributor(s): Benjamin Hooks, B.R. Smith-Konter

    3D numerical mechanical modeling of the southern San Andreas Fault system. June 14-18, 2010. Benjamin Hooks. 

  25. A one dimensional model of Earth structure in the western United States from GPS observation of ocean tidal load

    30 Mar 2021 | Workshops | Contributor(s): Takeo Ito, Mark Simons

    A one dimensional model of Earth structure in the western United States from GPS observation of ocean tidal load. June 14-18, 2010. Takeo Ito. 

  26. Rheology of the brittle-plastic transition: Role of fabric and phyllosilicates

    30 Mar 2021 | Workshops | Contributor(s): Laurent G.J. Montesi

    Rheology of the brittle-plastic transition: Role of fabric and phyllosilicates. June 14-18, 2010. Laurent G.J. Montesi. 

  27. Community Benchmarks for Code Verification

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard

    Community Benchmarks for Code Verification. June 14-18, 2010. Brad Aagaard. 

  28. Constructing constitutive relations for faulting at high and low sliding speeds

    30 Mar 2021 | Workshops | Contributor(s): Nick Beeler

    Constructing constitutive relations for faulting at high and low sliding speeds. June 14-18, 2018. Nick Beeler. 

  29. Tectonic Tremor Beneath the San Andreas Fault: Implications for lower crustal deformation

    30 Mar 2021 | Workshops | Contributor(s): David R. Shelly, Jeanne Hardebeck, Gary Fuis, Jessica Murray-Moraleda, Bill Ellsworth, Roland Bürgmann, Bob Nadeau, Greg Beroza

    Tectonic Tremor Beneath the San Andreas Fault: Implications for lower crustal deformation. June 14-18, 2010. David R. Shelly. 

  30. A model for ductile shear initiated by shear fracture: Application to short term and secular fault slip.

    30 Mar 2021 | Workshops | Contributor(s): Luc Lavier, Rick Bennett, Liz Logan, Gianreto Manatschal, Nick Hayman

    A model for ductile shear initiated by shear fracture: Application to short term and secular fault slip. June 14-18, 2010. Luc Lavier. 

  31. An overview of the 4 April 2010 Sierra El Mayor-Cucapah (Baja California) earthquake

    30 Mar 2021 | Workshops | Contributor(s): Rich Briggs, Shengji Wei, Eric Fielding, Sebastien Leprince, Anthony Sladen, Risheng Chu, Mark Simons, Jean-Philippe Avouac, Egill Hauksson, Donald V. Helmberger, Rowena Lohman, Ken Hudnut, Sinan Akciz

    An overview of the 4 April 2010 Sierra El Mayor-Cucapah (Baja California) earthquake. June 14-18, 2010. Rich Briggs. 

  32. The January 12, 2010 Haiti Earthquake

    30 Mar 2021 | Workshops | Contributor(s): Eric Calais, Andrew Freed, Glen Mattioli, Pamela Jansma, Falk Amelung, Timothy Dixon, Sigurjon Jonsson, Claude Prepetit, Roberte Momplaisir

    The January 12, 2010 Haiti Earthquake. June 10-14, 2010. Eric Calais. 

  33. News from the Chilean Front

    30 Mar 2021 | Workshops | Contributor(s): Jorge Baron, Jim Beck, Mike Bevis, Mauro Blanco, Ben Brooks, Dana Caccamise, James Foster, Jeff Genrich, Erik Kendrik, Nina Lin, Sarah Minson, Fransisco Ortega, Susan Owen, Hector Parra, Anthony Sladen, Mark Simons, Bob Smalley

    News from the Chilean Front. June 14-18, 2010. Jorge Baron. 

  34. The USGS Response to Recent Large Earthquakes: A Seismological Overview of the Haiti, Chile, and El Mayor Events

    30 Mar 2021 | Workshops | Contributor(s): Gavin Hayes

    The USGS Response to Recent Large Earthquakes: A Seismological Overview of the Haiti, Chile, and El Mayor Events. June 14-18, 2010. Gavin Hayes. 

  35. Extending PyLith

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard, Charles Williams, Matthew Knepley, Surendra Somala

    Extending PyLith. June 14-18, 2010. Brad Aagaard. 

  36. Generating Meshes for Geodynamic Problems Using Cubit

    30 Mar 2021 | Workshops | Contributor(s): Charles Williams, Rowena Lohman

    Generating Meshes for Geodynamic Problems Using Cubit. June 14-18, 2010. Charles Williams. 

  37. PyLith 1.5: Friction, Small Strains, and Elastoplasticity

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard, Charles Williams, Matthew Knepley, Surendra Somala

    PyLith 1.5: Friction, Small Strains, and Elastoplasticity. June 14-18, 2010. Brad Aagaard. 

  38. LaGriT Tutorial

    30 Mar 2021 | Workshops | Contributor(s): Carl Gable

    LaGriT Tutorial. June 14-18, 2010. Carl Gable. 

  39. Release note summary: Cubit 11.1-12.0-12.1

    30 Mar 2021 | Workshops | Contributor(s): Rowena Lohman, Steve Owen

    Release note summary: Cubit 11.1-12.0-12.1. June 14-18, 2010. Rowena Lohman. 

  40. What's New In PyLith 1.5.0?

    30 Mar 2021 | Workshops | Contributor(s): Charles Williams, Brad Aagaard, Matthew Knepley, Surendra Somala, Sue Kientz, Lief Strand

    What's New In PyLith 1.5.0?. June 14-18, 2010. Charles Williams. 

  41. PyLith 1.5 Tutorial

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard

    PyLith 1.5 Tutorial. June 14-18, 2010. Brad Aagaard. 

  42. Meshing and Set Up Workflow

    30 Mar 2021 | Workshops | Contributor(s): Carl Gable

    Meshing and Set Up Workflow. June 14-18, 2010. Carl Gable. 

  43. Introduction to CUBIT: A quick tutorial and some simple examples

    30 Mar 2021 | Workshops | Contributor(s): Rowena Lohman

    Introduction to CUBIT: A quick tutorial and some simple examples. June 14-18, 2010. Rowena Lohman. 

  44. Building GeoFEST Models

    30 Mar 2021 | Workshops | Contributor(s): Jay Parker

    Building GeoFEST Models. June 14-18, 2010. Jay Parker. 

  45. PyLith

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard, Charles Williams, Matthew Knepley, Surendra Somala, Sue Kientz, Leif Strand

    PyLith. June 14-18, 2010. Brad Aagaard. 

  46. Finite-Element Modeling for Crustal Deformation

    30 Mar 2021 | Workshops | Contributor(s): Brad Aagaard

    Finite-Element Modeling for Crustal Deformation. June 14-18, 2010. Brad Aagaard. 

  47. CIG Bylaws 2018

    30 Mar 2021 | Documents | Contributor(s): Staff

    Bylaws of Computational Infrastructure for Geodynamics (CIG). As amended by the Electorate, June 30, 2018. 

  48. Full Waveform Inversion: challenges

    29 Mar 2021 | Workshops | Contributor(s): Jean Virieux, A. Asnaashari, F. Bretaudeau, R. Brossier, C. Castellanos, M. Dietrich, S. Garambois, F. Lavoue, I. Masoni, L. Metivier, S. Operto, A. Ribodetti

    Full Waveform Inversion: challenges. July 14-19, 2013. Jean Virieux. 

  49. Imaging Earth's Interior based on Spectral-Element and Adjoint Methods

    29 Mar 2021 | Workshops | Contributor(s): Jeroen Tromp, Hejun Zhu, Ebru Bozdag, Daniel Peter, Tom Duffy

    Imaging Earth's Interior based on Spectral-Element and Adjoint Methods. July 14-19, 2013. Jeroen Tromp. 

  50. Imaging with the Generalized Radon Transform: a review of the theory and applications (to subduction zones)

    29 Mar 2021 | Workshops | Contributor(s): Stéphane Rondenay, M Bostock, J Shragge, G Abers, C-W Chen, S. McGary, F Pearce, J. Suckale, P van Keken, L Montési

    Imaging with the Generalized Radon Transform: a review of the theory and applications (to subduction zones). July 14-19, 2013. Stéphane Rondenay.