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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...
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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
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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...
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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...
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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...
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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.
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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.
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2021 SMOREs Introduction
02 Nov 2021 | Webinars | Contributor(s): John Naliboff
2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech
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2021 SMOREs Introduction
02 Nov 2021 | Webinars | Contributor(s): John Naliboff
2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech
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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
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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
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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
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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
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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
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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
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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
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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
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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.
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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...
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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.
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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...
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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.
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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.
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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.
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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
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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...
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2021 CIG Community Research Highlights
02 Aug 2021 | Documents | Contributor(s): Lorraine Hwang
Research highlights solicited from the community for CIG IV,
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Computational Science Roundtable Discussion
01 Apr 2021 | Workshops | Contributor(s): Staff
Computational Science Roundtable Discussion. October 16-18, 2006.
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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.
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Spectral-Element and Adjoint Methods in Seismology
11 Feb 2021 | Workshops | Contributor(s): Jeroen Tromp
Spectral-Element and Adjoint Methods in Seismology. October 16-18, 2006. Jeroen Tromp.
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An Architecture for Composing Solvers
11 Feb 2021 | Workshops | Contributor(s): Barry Smith
An Architecture for Composing Solvers - Case study of PETSc. October 16-18, 2006. Barry Smith.
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Going Beyond an Elastic Halfspace
11 Feb 2021 | Workshops | Contributor(s): Mark Simons, Eric Hetland, Mark Turner
Going Beyond an Elastic Halfspace - CIG Short-Term Crustal Dynamics. October 16-18, 2006. Mark Simons, Eric Hetland, and Mark Turner.
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Plumbing the Depths: Computational Challenges for Magma Dynamics in Earth Sciences
11 Feb 2021 | Workshops | Contributor(s): Marc Spiegelman, Richard Katz
Plumbing the Depths: Computational Challenges for Magma Dynamics in Earth Sciences. October 16-18, 2006. Marc Spiegelman, Richard Katz.
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An Overview of the Application of Newton-Krylov based Solution Methods for Nonlinear Multiple-time-scale PDE Systems
11 Feb 2021 | Workshops | Contributor(s): John Shahid
An Overview of the Application of Newton-Krylov based Solution Methods for Nonlinear Multiple-time-scale PDE Systems. October 16-18, 2006. John Shahid .
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Scalable Techniques for Scientific Visualization
11 Feb 2021 | Workshops | Contributor(s): Claudio Silva
Scalable Techniques for Scientific Visualization. October 16-18, 2006. Claudio Silva.
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Modeling Geophysical Mass Flows – Mesh(Free), Model and Parameter Adaptivity
11 Feb 2021 | Workshops | Contributor(s): Abani Patra
Modeling Geophysical Mass Flows – Mesh(Free), Model and Parameter Adaptivity. October 16-18, 2006. Abani Patra.
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Improving Scalability of Sparse Direct Linear Solvers
11 Feb 2021 | Workshops | Contributor(s): X. Sherry Li
Improving Scalability of Sparse Direct Linear Solvers. October 16-18, 2006. X. Sherry Li.
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Scientific and computational challenges in simulating fluid-rock interaction
11 Feb 2021 | Workshops | Contributor(s): Mousumi Roy
Scientific and computational challenges in simulating fluid-rock interaction and its role in the long-term tectonics of continental lithosphere. October 16-18, 2006.Mousumi Roy.
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Grid Refinement and Parallel computing for mantle convection and Thermochemical Convection
11 Feb 2021 | Workshops | Contributor(s): Scott King, Peter van Keken
Grid Refinement and Parallel computing for mantle convection and Thermochemical Convection. October 16-18, 2006. Scott King, Peter van Keken.
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Besides Teraflops: Getting More from Big Iron
11 Feb 2021 | Workshops | Contributor(s): Tiankai Tu
Besides Teraflops: Getting More from Big Iron. October 16-18, 2006. Tiankai Tu.
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CIG Business Meeting 2007 Presentations
07 Feb 2021 | Documents | Contributor(s): Staff
PDF presentations given at the CIG Business Meeting on December 11, 2007, in San Francisco during the annual AGU Meeting.
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CIG Business Meeting 2009 Presentations
07 Feb 2021 | Documents | Contributor(s): Staff
CIG Business Meeting 2009 Presentation.Movie Files and Other Supporting Material.Ehler.
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CIG Business Meeting 2008 Presentations
07 Feb 2021 | Documents | Contributor(s): Staff
CIG Business Meeting 2008 Presentations.December 16, 2008.CIG Business Meeting: The Future of CIG, presented by Marc Spiegelmann (Columbia), EC Chair.CIG-II, presented by Louise Kellogg (UC Davis), SSC Chair.
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SSC May 2008 Meeting Presentations
07 Feb 2021 | Documents | Contributor(s): Staff
Presentations from the SSC Meeting held at CIG on May 29-30, 2008.
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Expanding Computational Infrastructure: The First 5 Years of CIG
07 Feb 2021 | Documents | Contributor(s): Staff
Expanding Computational Infrastructure: The First 5 Years of CIG.Parts 1 & 2.
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2013 CIG Strategic Plan & Annual Report
07 Feb 2021 | Documents | Contributor(s): Staff
2013-2014 Strategic Plan & Annual Report.June 2013.
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2009 CIG Annual Report
07 Feb 2021 | Documents | Contributor(s): Staff
Annual Report:Aug. 31, 2009.
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2007 CIG Five-Year Strategic Plan
07 Feb 2021 | Documents | Contributor(s): Staff
Five-Year Strategic Plan: Sept. 1, 2007 to Aug. 31, 2012.
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2005 CIG Five-Year Strategic Plan
07 Feb 2021 | Documents | Contributor(s): Staff
Five-year Strategic Plan: Sept. 1, 2005 to Aug. 31, 2010.Submitted July 26, 2005.
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2005 Executive Committee Meeting Minutes
07 Feb 2021 | Documents | Contributor(s): Staff
Minutes of the Executive Committee Meeting.May 2, 2005, Berkeley, CA.