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  1. 2023 PyLith Hackathon

    02 Aug 2023 | Contributor(s): Brad Aagaard

    Workshop report

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

    10 Mar 2023 | 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 | 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 CIG

    18 Nov 2021 | Documents | Contributor(s): CIG Staff

    Presentation and recording of the 2021 CIG Annual Business Meeting November 18, 2021 ~@1-2:30P PT.

  8. 2021 CIG Annual Business Meeting

    18 Nov 2021 | Documents | Contributor(s): CIG Staff

    Presentation from the 2021 CIG Annual Business Meeting, November 18 @1-2:30P PT.

  9. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  10. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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

  18. 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

  19. 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.

  20. 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...

  21. 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.

  22. 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...

  23. 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.

  24. 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...

  25. 2021 CIG Community Research Highlights

    02 Aug 2021 | Documents | Contributor(s): Lorraine Hwang

    Research highlights solicited from the community for CIG IV, 

  26. 3-D Spherical Mantle Convection with Radial Basis Functions

    02 Apr 2021 | Workshops | Contributor(s): Grady B. Wright, Natasha Flyer, David Yuen

    3-D Spherical Mantle Convection with Radial Basis Functions. March 30-31, 2009. Grady B. Wright, Natasha Flyer, David Yuen. 

  27. Stress Evolution and Fault Interactions before and after the 2008 Great Wenchuan Earthquake

    02 Apr 2021 | Workshops | Contributor(s): Gang Luo, Mian Liu

    Stress Evolution and Fault Interactions before and after the 2008 Great Wenchuan Earthquake. March 30-31, 2009. Gang Luo, Mian Liu. 

  28. Steering Geodynamics Models with Plate Tectonics Reconstruction Software: GPlates

    02 Apr 2021 | Workshops | Contributor(s): Mark Turner, Mike Gurnis, Lydia DiCaprio, James Boyden, James Clark, John Cannon, Dietmar Muller, Robin Watson, Trond Torsvik

    Steering Geodynamics Models with Plate Tectonics Reconstruction Software: GPlates. March 30-31, 2009. Mike Turner, Mike Gurnis, Lydia Di Caprio, James Boyden, James Clark, Joh Cannon, Dietmar Muller, Robin Watson, Trond Torsvik. 

  29. Linking CitcomS and SPECFEM3D

    02 Apr 2021 | Workshops | Contributor(s): Eh Tan, Leif Strand

    Linking CitcomS and SPECFEM3D. March 30-31, 2009. Eh Tan, Leif Strand. 

  30. Investigating Surface-wave Propagation Using Spectral Element Method

    02 Apr 2021 | Workshops | Contributor(s): Kui Liu, Youyi Ruan, Ying Zhou

    Investigating Surface-wave Propagation Using Spectral Element Method. March 30-31, 2009. Kui Liu, Youyi Ruan, Ying Zhou. 

  31. Influence of Dynamic Topography on Sea Level and its Rate of Change

    02 Apr 2021 | Workshops | Contributor(s): Clinton P. Conrad, Laurent Husson

    Influence of Dynamic Topography on Sea Level and its Rate of Change. March 30-31, 2009. Clinton P. Conrad, Laurent Husson. 

  32. Farallon Subduction Reconstructed by Inverse Dynamic Models: Stratigraphy Verifications and Geophysical implications

    02 Apr 2021 | Workshops | Contributor(s): Lijun Liu, Sonja Spasojevic, Michael Gurnis

    Farallon Subduction Reconstructed by Inverse Dynamic Models: Stratigraphy Verifications and Geophysical implications. March 30-31, 2009. Lijun Liu, Sonja Spasojevic, Michael Gurnis. 

  33. Constraints on Global Mantle Flow and Lithosphere Net Rotation from Seismic Anisotorpy

    02 Apr 2021 | Workshops | Contributor(s): Clinton P. Conrad, Mark D. Behn

    Constraints on Global Mantle Flow and Lithosphere Net Rotation from Seismic Anisotorpy. March 30-31, 2009. Clinton P. Conrad, Mark D. Behn. 

  34. A Solid Earth Research and Teaching Environment

    02 Apr 2021 | Workshops | Contributor(s): Hannah Waterhouse, Kevin Milner, Thorsten Becker, Jared Sain, Danijel Schorlemmer

    A Solid Earth Research and Teaching Environment. March 30-31, 2009. Hannah Waterhhouse, Kevin Milner, Thorsten Becker, Jared Sain, Danijel Schorlemmer. 

  35. Software, complexity & reuse... Robust -to- experimental codes for geodynamics

    02 Apr 2021 | Workshops | Contributor(s): Steve Quenette

    Software, complexity & reuse... Robust -to- experimental codes for geodynamics. March 30-31, 2009. Steve Quenette. 

  36. Adaptive Mesh Refinement (AMR)

    02 Apr 2021 | Workshops | Contributor(s): Carsten Burstedde, Omar Ghattas, Georg Stadler, Lucas C. Wilcox, George Biros, Michael Gurnis, Shijie Zhong, Wolfgang Bangerth

    Adaptive Mesh Refinement (AMR). March 30-31, 2009. Carsten Burstedde. 

  37. Cooperative Institute for Deep Earth Research

    02 Apr 2021 | Workshops | Contributor(s): Barbara Romanowicz

    Cooperative Institute for Deep Earth Research. March 30-31, 2009. Barbara Romanowicz. 

  38. CIG Long Term Tectonics Working Group Current and Future Computational Geoscience Directions: Successes & Failures

    02 Apr 2021 | Workshops | Contributor(s): Long-Term Tectonics Working Group

    CIG Long Term Tectonics Working Group Current and Future Computational Geoscience Directions: Successes & Failures. March 30-31, 2009. Long-Term Tectonics Working Group. 

  39. Magma Dynamics

    02 Apr 2021 | Workshops | Contributor(s): Anonymous

    Magma Dynamics. March 30-31, 2009. 

  40. Current and Future Computational Geoscience Directions: Successes & Failures

    02 Apr 2021 | Workshops | Contributor(s): Allan Levander, Michael Ritzwoller, Jeroen Tromp, Michael Wyssession

    Current and Future Computational Geoscience Directions: Successes & Failures. March 30-31, 2009. Allen Levander. 

  41. CIG: Short-Term Tectonics State of the union

    02 Apr 2021 | Workshops | Contributor(s): Mark Simons

    CIG: Short-Term Tectonics State of the union. March 30-31, 2009. Mark Simons. 

  42. Short-Term Tectonics Science

    02 Apr 2021 | Workshops | Contributor(s): Brad Aagaard

    Short-Term Tectonics Science. March 30-31, 2009. Brad Aagaard. 

  43. Plate Boundary Dynamics

    02 Apr 2021 | Workshops | Contributor(s): Anonymous

    Plate Boundary Dynamics. March 30-31, 2009. 

  44. Long-term tectonics: from nanometer to global scale

    02 Apr 2021 | Workshops | Contributor(s): Magali Billen

    Long-term tectonics: from nanometer to global scale. March 30-31, 2009. Magali Billen. 

  45. Education and Training

    02 Apr 2021 | Workshops | Contributor(s): Brad Aagaard

    Education and Training. March 30-31, 2009. Brad Aagaard. 

  46. Mantle Convection Education & Training Activities

    02 Apr 2021 | Workshops | Contributor(s): Magali Billen

    Mantle Convection Education & Training Activities. March 30-31, 2009. Magali Billen. 

  47. Multiscale/Multiphysics

    02 Apr 2021 | Workshops | Contributor(s): C. Norton

    Multiscale/Multiphysics. March 30-31, 2009. C. Norton. 

  48. Mantle Convection

    02 Apr 2021 | Workshops | Contributor(s): C. Conrad

    Mantle Convection. March 30-31, 2009. C. Conrad. 

  49. Science goals: 3-5 years from now

    02 Apr 2021 | Workshops | Contributor(s): Anonymous

    Science goals: 3-5 years from now. March 30-31, 2009. 

  50. Magma Dynamics at CIG

    02 Apr 2021 | Workshops | Contributor(s): Laurent G. J. Montési, Marc Spiegelman, Steve Quenette, David Lee, Wolfgang Bangerth

    Magma Dynamics at CIG. March 30-31, 2009. Laurent G. J. Montési.