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  1. TauP

    29 Feb 2024 | | 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. Sep 15 2023

    Seismology Working Group

  3. SPECFEM3D Cartesian

    30 Oct 2021 | | 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...


    30 Oct 2021 | | 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...


    29 Oct 2021 | | 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...


    29 Oct 2021 | | 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...


    29 Oct 2021 | | 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

  8. SW4

    29 Oct 2021 | | 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 | | 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...


    28 Oct 2021 | | 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...


    28 Oct 2021 | | 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 | | 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. BurnMan

    14 Sep 2021 | | 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...

  14. IRIS Short Course August 2015

    19 Dec 2020 | | Contributor(s):: Lion Krischer

    ObsPy  A very short introduction to Obspy developed for the IRIS-EarthScope Short Course.

  15. Tutorial - 2017 CIG-LLNL Computational Seismology Workshop

    19 Dec 2020 | | Contributor(s):: Lion Krischer

    ObsPy.  A series of 8 notebooks developed for the September 18-22. 2017 CIG-LLNL Computational Seismology Workshop  

  16. Sep 18 2019

    2019 Securing Legacy Seismic Data to Enable Future Discoveries

    New seismological data mining methods are enabling discoveries and cross-disciplinary research across Earth system science. Research is challenged by the relatively short time period of observation...

  17. Sep 18 2017

    2017 CIG-LLNL Computational Seismology Workshop

    The goal of the workshop is to provide participants with hands-on, end-to-end experience in accessing, processing, modeling, and visualizing seismic data using advanced tools in seismological...

  18. Jun 24 2016

    2016 SW4 Tutorial

    This workshop gives a hands-on introduction to the parallel seismic wave propagation code SW4 (Seismic Waves, 4th order). This code solves the seismic wave equations in displacement...

  19. Jun 24 2016

    2016 SPECFEM3D Tutorial

    In this tutorial we present SPECFEM3D package, which simulates seismic wave propagation in three-dimensional mediums. Two versions of the package are specifically designed to simulate seismic wave...

  20. Jun 23 2016

    2016 ObsPy Tutorial

    This one day course begins with an overview of the ObsPy package ( and will introduce its major features and capabilities. Step-by-step, you will learn how to use different...

  21. Jul 13 2013

    2013 CIG/QUEST/IRIS Joint Workshop on Seismic Imaging of Structure and Source

    The July 14-17, 2013, workshop, hosted by the University of Alaska at Fairbanks, presented theoretical developments and applications in computational seismology with regard to earth structure and...

  22. Oct 09 2007

    2007 CIG/SPICE/IRIS Workshop in Computational Seismology

    The CIG/SPICE/IRIS Seismology Workshop was held October 9-11, 2007, in Jackson, NH, at the Eagle Mountain House. It was a joint meeting between European and American Seismologists to discuss...

  23. Oct 31 2006

    2006 Earthscope Imaging Science/CIG Seismology Joint Workshop on Computational Seismology

    This workshop presented theory, documentation and hands-on exposure to several programs of forward modeling and direct imaging methods for teleseismic data. Because forward modeling is an essential...

  24. Jun 08 2005

    2005 CIG/IRIS Workshop on Computational Seismology

    The CIG/IRIS Workshop on Computational Seismology was held at the Dolce Skamania Lodge at Stevenson, WA (the same location as the IRIS workshop) on June 8, 2005.With support and encouragement from...