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  1. seismology
  1. 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...

  2. 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...

  3. 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...

  4. 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...

  5. 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.

  6. 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.

  7. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  8. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  9. 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

  10. 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

  11. 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

  12. 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

  13. 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

  14. 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

  15. 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

  16. 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

  17. 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.

  18. 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.

  19. 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

  20. 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...

  21. 2021 CIG Community Research Highlights

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

    Research highlights solicited from the community for CIG IV, 

  22. 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. 

  23. 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.

  24. CIG Business Meeting 2009 Presentations

    07 Feb 2021 | Documents | Contributor(s): Staff

    CIG Business Meeting 2009 Presentation.Movie Files and Other Supporting Material.Ehler.

  25. 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.

  26. 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.

  27. 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.

  28. 2013 CIG Strategic Plan & Annual Report

    07 Feb 2021 | Documents | Contributor(s): Staff

    2013-2014 Strategic Plan & Annual Report.June 2013.

  29. 2009 CIG Annual Report

    07 Feb 2021 | Documents | Contributor(s): Staff

    Annual Report:Aug. 31, 2009. 

  30. 2007 CIG Five-Year Strategic Plan

    07 Feb 2021 | Documents | Contributor(s): Staff

    Five-Year Strategic Plan: Sept. 1, 2007 to Aug. 31, 2012.

  31. 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.

  32. 2005 Executive Committee Meeting Minutes

    07 Feb 2021 | Documents | Contributor(s): Staff

    Minutes of the Executive Committee Meeting.May 2, 2005, Berkeley, CA.

  33. Advancing Solid Earth System Science Through High-Performance Computing

    07 Feb 2021 | Documents | Contributor(s): Staff

    Advancing Solid Earth System Science Through High-Performance Computing.June 2014.

  34. 2014 Positioning CIG

    05 Feb 2021 | Documents | Contributor(s): Staff

    Positioning CIG.September 2014.

  35. 2014 CIG Strategic Plan & Annual Report

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2014-2015 Strategic Plan & Annual Report.June 2014.

  36. 2015 CIG Strategic Plan & Annual Report

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2015-2016 Strategic Plan & Annual Report.June 2015.

  37. CIG III Proposal

    05 Feb 2021 | Documents | Contributor(s): Staff

    Computational Infrastructure for Geodynamics 2016-2020. Submitted to NSF July 1, 2015.

  38. 2016 CIG Annual Report

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2015-2016 Annual Report.July 2016.

  39. 2017 CIG Annual Report

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2016-2017 Annual Report and Science and Work Plan.July 2017.

  40. 2020 CIG Annual Report

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2019-2020 Annual Report.July 2020.

  41. 2015 AGU Week

    05 Feb 2021 | Documents | Contributor(s): Staff

    2015 AGU Week - 2015 Business Meeting.14 December 2015.San Fransisco, CA.

  42. 2018 AGU Week

    05 Feb 2021 | Documents | Contributor(s): Staff

    2018 Fall AGU Meeting.December 10-14.Washington, D.C.

  43. 2019 AGU Week

    05 Feb 2021 | Documents | Contributor(s): Staff

    CIG 2019 Business Meeting.11 December 2019.San Fransisco, CA.

  44. 2019 The Release of the GEM Global Active Faults Database and Global Seismic Hazard Map

    04 Feb 2021 | Webinars | Contributor(s): Richard Styron

    In late 2018, the Global Earthquake Model Foundation (GEM) released the initial version of several major products relating to seismic hazard and risk, including the Global Seismic Hazard Map, the Global Seismic Risk Map, and the Global Active Faults Database. Though these are intended primarily...

  45. 2019 HeFESTO: A tool for exploring Earth's physical properties and their effects on mantle dynamics

    04 Feb 2021 | Webinars | Contributor(s): Carolina Lithgow-Bertelloni, Lars Stixrude

    The minerals that exist at the extreme pressure and temperature conditions of the mantle and their physical properties determine the dynamics of the mantle. Both are also critical for comparison with seismic observations that put constraints on our knowledge of mantle structure and...

  46. 2019 Introduction to Quagmire

    04 Feb 2021 | Webinars | Contributor(s): Louis Moresi, Ben Mather, Romain Beucher

    Quagmire is an open source, parallel python module for modelling surface processes and landscape evolution. It comes from the Underworld geodynamics group and has many common design patterns to Underworld. For starters, this is not an out-of-the-box landscape evolution code — it is instead...

  47. 2018 Introduction to thermal-mechanical lithosphere models with surface processes

    04 Feb 2021 | Webinars | Contributor(s): Louis Moresi, Romain Beucher

    Surface processes including erosion, transport and sedimentation have the potential to strongly influence crustal and lithospheric deformation whether passively, through isostatic response, or more actively by affecting the thermal structure, the potential energy field, and / or the local stress...

  48. 2018 Pythonic Geodynamics

    04 Feb 2021 | Webinars | Contributor(s): Gabriele Morra, David A. Yuen, Sang-Mook Lee

    Students and young researchers who want to learn to use computational tools for geodynamic modeling have the option to choose among a wide range of numerical tools. I will show how Python and its libraries represent an easy-to-use platform for self-learning, with performance close to compiled...

  49. 2017 Geodynamic modeling with staggered finite differences and marker in cell: theory, teaching and examples

    04 Feb 2021 | Webinars | Contributor(s): Taras Gerya

    Numerical modeling of geodynamic processes is an essential approach in both science and industry with ever- growing demand and high efficiency/cost ratio. Current trend in geodynamic modeling is to develop universal approaches with potentially unlimited number of applications. One simple...

  50. 2017 Introduction to the spectral-infinite-element method

    04 Feb 2021 | Webinars | Contributor(s): Hom Nath Gharti, Jeroen Tromp

    The governing equations for the elastic-gravitational deformation of an Earth model involve a perturbed gravitational potential. The gravitational potential is governed by Poisson’s equation inside the Earth and by Laplace’s equation in the rest of space. The infinite domain...