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  1. 2022 CIG Annual Business Meeting

    29 Nov 2022 | Contributor(s): CIG Staff

    Presentation from the 2022 CIG Annual Business meeting, November 9, 2022 from 10a-noon PT. [more info]

  2. 2022 Rayleigh Hackathon

    20 Oct 2022 | Contributor(s): Nicholad Featherstone, Rene Gassmoeller

    Workshop Report

  3. 2022 Seismic Cycles Workshops

    13 Oct 2022 | Contributor(s): Sylvain Barbot, Multiple

    Presentations from the 2022 Seismic Cycles Workshop. 

  4. ASPECT Jupyter Notebooks

    03 Oct 2022 | Contributor(s): Rene Gassmoeller, Chris Mills

    Contains ASPECT Jupyter notebooks

  5. 2021 Rayleigh Hackathon Report

    12 Sep 2022 | Contributor(s): CIG Staff

  6. BurnMan Jupyter Notebooks

    07 Sep 2022 | Contributor(s): Chris Mills

    Contains BurnMan Jupyter notebooks

  7. 2022 CIG Annual Report

    06 Sep 2022 | Contributor(s): CIG Staff

    2022 CIG Annual Report

  8. 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

  9. Coordination with SZ4D

    14 Jul 2022 | Contributor(s): Sylvain Barbot

    Contribution to the Computational Solid Earth Science Initiative Coordination Meeting Location: SEEC Building, University of Colorado, Boulder, 4001 Discovery Drive, Boulder, COModality: In-person, remote supported (zoom links below, different for day 1 and 2)Main meeting room:...

  10. XSEDE Proposal 2022

    14 Jul 2022 | Contributor(s): CIG Staff

    XSEDE proposal and code scaling: September 2022

  11. 2022 Software Developers Workshop

    13 Jul 2022 | Workshops | Contributor(s): Brad Aagaard, Rene Gassmoeller, Lorraine Hwang

    Workshop Report

  12. 2022 Modeling shallow slow slip events along the Hikurangi margin: Insights into their segmentation and the effect of pore-pressure cycling

    02 Jul 2022 | Webinars | Contributor(s): Andrea Perez-Silva

    Friday July 1, 2022 Andrea Perez-Silva, Victoria University of Wellington Over the last two decades, geodetic observations have revealed slow slip events (SSEs) in most subduction zones worldwide. Of these, SSEs that occur along the shallow (<~15 km depth) portion of the Hikurangi...

  13. ASPECT Hackathon 2022 Report

    23 Jun 2022 | Workshops | Contributor(s): Organizing Committee

    2022 ASPECT Hackathon Dates: May 15-24, 2022 Location: Cody, Wyoming

  14. ASPECT Hackathon 2021 Report

    23 Jun 2022 | Workshops | Contributor(s): Organizing Commitee

    2021 ASPECT Hackathon Dates: Tuesday July 6 - Friday July 16 Location: Virtual

  15. Frontera 2021

    15 Jun 2022 | Documents | Contributor(s): Lorraine Hwang, Hiroaki Matsui

    This file was part of a draft.

  16. Frontera 2022

    15 Jun 2022 | Documents | Contributor(s): Lorraine Hwang, Hiroaki Matsui

  17. 2022 Cycles of slow slip events on nonplanar subduction faults and their implications on megathrust earthquakes

    11 Jun 2022 | Webinars | Contributor(s): Duo Li

    Slow slip and slow earthquakes (SSEs), driven by transient aseismic deformation along the subduction interface, are proposed to affect the initiation of megathrust earthquakes. Prominent examples, as inferred from geodetic and seismic observations, include the 2011 M9.1Tohoku-Oki,, the 2014...

  18. 2022 Fault-size dependent fracture energy, seismogenesis, and cascading rupture on multi-scale fault networks

    29 May 2022 | Webinars | Contributor(s): Dmitry Garagash

    Fracture energy fundamentally affects all aspects of earthquake rupture, including fault seismogenesis. Seismological inferences of fracture energy [1-3] are seen to increase with both slip and the size of fault source. To explain these observations, refs [3-5] invoke co-seismic shear...

  19. 2022 Theoretical insights on the rupture arrest of large earthquakes

    24 May 2022 | Webinars | Contributor(s): Jean Paul Ampuero

    What determines the size of an earthquake? How can we quantify the control of geometric and material heterogeneities on rupture segmentation? I will present recent progress in our theoretical understanding of earthquake rupture arrest, especially for the largest earthquakes. Recent advances in...

  20. 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...

  21. 2022 Rupture styles and recurrence patterns in seismic cycles linked to physical properties of the fault zone

    18 May 2022 | Webinars | Contributor(s): Shiying Nie

    Rupture styles emerge in a broad range of rupture styles, from slow-slip events collocated with or without tremors to pulse-like earthquake sequences. Meanwhile, Earthquake catalogs exhibit various recurrence patterns, from periodic and characteristic earthquakes to chaotic sequences with...

  22. 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...

  23. RStudio

    12 May 2022 | Software: Launch | Contributor(s): Steven Clark

    RStudio is a GUI for R, the statistical programming language.

  24. Jupyter Notebook (2020)

    22 Apr 2022 | Software: Launch | Contributor(s): Steven Clark

    Starts the Jupyter notebook server

  25. Development Workspace (Debian 10)

    22 Apr 2022 | Software: Launch | Contributor(s): Steven Clark

    Development Workspace

  26. HIPPYlib: An Extensible Software Framework for Large-Scale Inverse Problems Governed by PDEs

    08 Mar 2022 | Workshops | Contributor(s): Umberto Villa, Noemi Petri, Omar Ghattas

  27. Kokkos, A Brief Overview

    08 Mar 2022 | Workshops | Contributor(s): Christian R. Trott

  28. Building Portable Containers for HPC

    02 Mar 2022 | Workshops | Contributor(s): Shane Canon

  29. SCOPED: introduction and project update Seismic COmputational Platform for Empowering Discovery

    02 Mar 2022 | Workshops | Contributor(s): Carl Tape, Ebru Bozdag, Marine Denolle, Felix Waldhauser, ian Wang

    The SCOPED project goal is to establish a novel hybrid cloud+HPC computational platform for use by the broader scientific community that combines large-scale processing and modeling of seismic data with a suite of open-source seismic codes.

  30. GPU Support in deal.II

    02 Mar 2022 | Workshops | Contributor(s): Bruno Turcksin, Daniel Arndt

  31. Journal of Open Source Software: Developing a Software Review Community

    01 Mar 2022 | Workshops | Contributor(s): Daniel S. Katz, JOSS Editors

  32. Using GPUs with PETSc

    01 Mar 2022 | Workshops | Contributor(s): Patrick Sanan

  33. 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...

  34. 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.

  35. 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.

  36. 2021 CIG Annual Report

    03 Nov 2021 | Documents | Contributor(s): Staff

    CIG 2020-2021Annual Report

  37. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  38. 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

  39. 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

  40. 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

  41. 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

  42. ASPECT

    30 Oct 2021 | Software: Download | Contributor(s): Wolfgang Bangerth, Juliane Dannberg, Menno Fraters, Rene Gassmoeller, Anne Glerum, Timo Heister, Robert Myhill, John Naliboff

     A finite element parallel code to simulate problems in thermal convection in both 2D and 3D models.ASPECT is a code to simulate problems in thermal convection. Its primary focus is on the simulation of processes in the earth's mantle, but its design is more general than...

  43. SPECFEM3D Cartesian

    30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (primary-developer), Jeroen Tromp (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...

  44. SPECFEM3D GLOBE

    30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), ean-Pierre Vilotte (primary-developer), Jeroen Tromp (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...

  45. 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...

  46. SPECFEM2D

    29 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (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...

  47. 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.

  48. SW4

    28 Oct 2021 | Software: Download | Contributor(s): N. Anders Petersson, Bjorn Sjögreen

    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...

  49. 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)...

  50. 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...