Geodynamics - Resources: All

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...

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

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...

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...

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...

2021 SMOREs Introduction

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

2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

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

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

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

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

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.

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...

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.

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...

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.

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.

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.

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

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...

Computational Science Roundtable Discussion

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

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

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.

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.

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.

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.

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.

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 .

Scalable Techniques for Scientific Visualization

11 Feb 2021 | Workshops | Contributor(s): Claudio Silva

Scalable Techniques for Scientific Visualization. October 16-18, 2006. Claudio Silva.

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.

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.

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.

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.

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.

CIG Business Meeting 2007 Presentations