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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. Fault strength evolution during the seismic cycle: Insights from the laboratory

    10 Mar 2023 | Webinars | Contributor(s): John Bedford

    Geophysical evidence suggests that some faults are frictionally strong, in agreement with laboratory measurements of quasi-static frictional strength (μ ≈ 0.6-0.8) for many crustal materials; whereas others studies have found that some faults are weak when compared to laboratory friction...

  3. 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

  4. 2022 Mainshock and aftershock sequence simulations in a nonplanar fault network

    19 May 2022 | Webinars | Contributor(s): So Ozawa, Ryosuke Ando

    Aftershocks seem to be located along the trace of the mainshock fault; however, due to the location error, we do not know their exact location relative to the mainshock fault. Here, we hypothesize that most aftershocks occur on small subsidiary faults instead of the mainshock fault, and they...

  5. 2022 Poroelastic Implementation in PyLith: Gateway to Multiphysics

    13 May 2022 | Webinars | Contributor(s): Robert L Walker

    Thursday May 12, 2022 @ 2P PDT Poroelastic Implementation in PyLith: Gateway to Multiphysics Robert Walker, SUNY Buffalo PyLith, a community, open-source code (https://geodynamics.org/resources/pylith) for modeling quasi-static and dynamic crustal deformation with an emphasis on earthquake...

  6. 2022 Energy transfer among flow and magnetic fields with different equatorial symmetry during the dipole reversal in a geodynamo simulation

    17 Feb 2022 | Webinars | Contributor(s): Takumi Kera, Hiroaki Matsui, Masaki Matsushima, Yuto Katoh

    The geomagnetic field has reversed its polarity, and some numerical dynamos have suggested that anti-symmetric flow with respect to the equator plays a role in reversals. Olson et al., (2004) suggested that the equatorial antisymmetric flow is temporarily strengthened, and transports a locally...

  7. 2021 SMOREs Introduction

    02 Nov 2021 | Webinars | Contributor(s): John Naliboff

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  8. 2021 Interactions between Lithospheric Instabilities and Formation of Mantle Plumes in Venus

    02 Nov 2021 | Webinars | Contributor(s): Hiva Mohammadzadeh

    2021 SMOREs ShowcaseHiva Mohammadzadeh, Los Angeles Pierce College

  9. 2021 Early Earth Influence of Radiogenic Heating on Mid-Ocean Ridge Depths and Seafloor Subsidence

    02 Nov 2021 | Webinars | Contributor(s): Keneni Godana

    2021 SMOREs ShowcaseKeneni Godana, University of Illinois at Chicago

  10. 2021 Bayesian Uncertainty Quantification of Subduction Zone Rheology from the Geoid

    02 Nov 2021 | Webinars | Contributor(s): Elena Ehrlich

    2021 SMOREs ShowcaseElena Ehrlich, North Carolina State University

  11. 2021 As Above So Below: A Simulation of the Continental Lithosphere and LLSVPs as Thermal Insulators Using ASPECT

    02 Nov 2021 | Webinars | Contributor(s): Dante Hickey

    2021 SMOREs ShowcaseDante Hickey, Reed College

  12. 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...

  13. 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...

  14. 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...

  15. 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...

  16. 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.

  17. 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...

  18. 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...

  19. 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...

  20. 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...

  21. 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...

  22. 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...

  23. 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...

  24. 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.

  25. 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...

  26. 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.

  27. 2020 Numerical models of lower crustal flow explain Yellowstone's "tectonic parabola"

    07 Oct 2021 | Webinars | Contributor(s): Jonathan Perry-Houts

    Several hypotheses exist for the origin of the seismically active region of high topography surrounding the Yellowstone hotspot track. Among these is the idea that a dense mid-crustal sill has driven viscous lower crust away from the hotspot track, producing crustal thinning/subsidence in the...

  28. 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...

  29. Fast Algorithms for Inverse Problems Governed by PDEs

    12 Apr 2021 | Workshops | Contributor(s): George Biros

    Fast algorithms for inverse problems governed by PDEs. September 15-17, 2008. George Biros. 

  30. Adjoint-Fueled Advances in Error Estimation for Multiscale, Multiphysics Systems

    12 Apr 2021 | Workshops | Contributor(s): Donald Estep

    Adjoint-Fueled Advances in Error Estimation for Multiscale, Multiphysics Systems. September 15-17, 2008. Donald Estep. 

  31. Non-Deterministic Approaches to Inverse Problems

    12 Apr 2021 | Workshops | Contributor(s): Malcolm Sambridge, Thomas Bodin

    Non-deterministic approaches to inverse problems. September 15-17, 2008. Malcolm Sambridge, Thomas Bodin. 

  32. Multilevel Modeling: Multigrid's Lost Twin

    12 Apr 2021 | Workshops | Contributor(s): David Moulton

    Multilevel Modeling: Multigrid’s Lost Twin. September 15-17, 2008. David Moulton. 

  33. Multiscale Finite Element Methods using Limited Global Information

    12 Apr 2021 | Workshops | Contributor(s): Yalchin Efendiev

    Multiscale finite element methods using limited global information. September 15-17, 2008. Yalchin Efendiev. 

  34. Multiscale Finite Element Methods for Heterogeneous Porous Media

    12 Apr 2021 | Workshops | Contributor(s): Todd Arbogast

    Multiscale Finite Element Methods for Heterogeneous Porous Media. September 15-17, 2008. Todd Arbogast.  

  35. Problems in Solid Earth Deformation: Crust and Upper Mantle

    12 Apr 2021 | Workshops | Contributor(s): Yuri Fialko

    Problems in Solid Earth Deformation: Crust and Upper Mantle. September 15-17, 2008. Yuri Fialko. 

  36. Constraining the Physics Governing Collective Behavior of Earthquakes and Faults through Numerical Modeling and Observations

    12 Apr 2021 | Workshops | Contributor(s): Yehuda Ben-Zion

    Constraining the physics governing collective behavior of earthquakes and faults through numerical modeling and observations. September 15-17, 2008. Yehuda Ben-Zion. 

  37. Current challenges in computational earthquake dynamics

    12 Apr 2021 | Workshops | Contributor(s): Jean-Paul Ampuero

    Current challenges in computational earthquake dynamics. September 15-17, 2008. Jean-Paul Ampuero. 

  38. Robust and Flexible Newton-Krylov based Solution Methods for Nonlinear Coupled Multiphysics Systems

    12 Apr 2021 | Workshops | Contributor(s): John Shadid

    Robust and Flexible Newton-Krylov based Solution Methods for Nonlinear Coupled Multiphysics Systems. September 15-17, 2008. John Shadid. 

  39. Multi-physics/Multi-Scale Methods I: Methods for Multi-physics Coupled Solvers

    12 Apr 2021 | Workshops | Contributor(s): Daniel Reynolds

    Multi-physics/Multi-Scale Methods I: Methods for Multi-physics Coupled Solvers. September 15-17, 2008. Daniel Reynolds. 

  40. Thermodynamics of Mantle Systems

    12 Apr 2021 | Workshops | Contributor(s): Paula Smith, Laura Baker Hebert, Paul Asimow, Mike Gurnis

    Thermodynamics of mantle systems. September 15-17, 2008. Paula Smith, Laura Baker Hebert, Paul Asimow, Mike Gurnis.

  41. Reservoir Simulation Magma Dynamics

    12 Apr 2021 | Workshops | Contributor(s): Marc Hesse

    Reservoir Simulation Magma Dynamics. September 15-17, 2008. Marc Hesse. 

  42. Limits to Nonlinear Inversion

    02 Apr 2021 | Workshops | Contributor(s): Klaus Mosegaard

    Limits to Nonlinear Inversion. September 15-17, 2008. Klaus Mosegaard. 

  43. Robust and Flexible Newton-Krylov based Solution Methods for Nonlinear Coupled Multiphysics Systems

    02 Apr 2021 | Workshops | Contributor(s): John Shadid, Paul T. Lin, Roger P. Pawlowski, Ray S. Tumninaro, Luis Chacon

    Robust and Flexible Newton-Krylov based Solution Methods for Nonlinear Coupled Multiphysics Systems. September 15-17, 2008. John N. Shadid. 

  44. Computational Science Roundtable Discussion

    01 Apr 2021 | Workshops | Contributor(s): Staff

    Computational Science Roundtable Discussion. October 16-18, 2006. 

  45. Ubiquitous Interactive Visualization of 3D Mantle Convection

    31 Mar 2021 | Workshops | Contributor(s): David Yuen

    Ubiquitous Interactive Visualization of 3D Mantle Convection. September 15-17, 2008. David Yuen. 

  46. PyLith 1.3: A Finite-Element Code for Modeling Quasi-Static and Dynamic Crustal Deformation

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

    PyLith 1.3: A Finite-Element Code for Modeling Quasi-Static and Dynamic Crustal Deformation. September 15-17, 2008. Brad Aagaard. 

  47. Parallel Adaptive Mantle Convection Simulation

    31 Mar 2021 | Workshops | Contributor(s): Carsten Burstedde, Omar Ghattas, Mike Gurnis, Georg Stadler, Eh Tan, Tiankai Tu, Lucas C. Wilcox, Shijie Zhong

    Parallel Adaptive Mantle Convection Simulation. September 15-17, 2008. Carsten Burstedde. 

  48. New Computational Approach to Nonplanar Elastodynamic Ruptures

    31 Mar 2021 | Workshops | Contributor(s): Ethan T. Coon, Bruce E. Shaw, Marc Spiegelman

    New Computational Approach to Nonplanar Elastodynamic Ruptures. September 15-17, 2008. Ethan T. Coon. 

  49. Multilevel Approach for signal restoration problems with Toeplitz matrices

    31 Mar 2021 | Workshops | Contributor(s): Malena I. Español, Misha E. Kilmer

    Multilevel Approach for signal restoration problems with Toeplitz matrices. September 17-18, 2008. Malena I. Español. 

  50. Lithospheric Modelling: Research Directions at Simula

    31 Mar 2021 | Workshops | Contributor(s): Stuart R. Clark, Are Magnus Bruaset

    Lithospheric Modelling: Research Directions at Simula. September 15-17, 2008. Stuart R. Clark.