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  1. 2007cigspiceirisworkshopincomputationalseismology x
  2. seismology x
  3. 2008workshoponnumericalmodelingofcrustaldeformationandearthquakefaulting x
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  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. 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 regional...

  18. SPECFEM3D GLOBE

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

  19. 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 details see...

  20. 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 upon Gmsh, Cubit, GiD or a...

  21. 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.

  22. SW4

    29 Oct 2021 | Software: Download | Contributor(s): N. Anders Petersson, Bjorn Sjögreen, Houjun Tang, Ramesh Pankajakshan

    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 have one...

  23. 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) in global...

  24. 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...

  25. FLEXWIN

    28 Oct 2021 | Software: Download | Contributor(s): Alessia Maggi

    The FLEXWIN software package automates the time-window selection problem for seismologists. It operates on pairs of observed and synthetic single component seismograms, defining windows that cover as much of a given seismogram as possible, while avoiding portions of the waveform that are...

  26. Mineos

    28 Oct 2021 | Software: Download | Contributor(s): Guy Masters (primary-developer), John Woodhouse (primary-developer), Freeman Gilbert (primary-developer), Michael Ritzwoller (primary-developer), Misha Barmine, Sue Kientz

    Mineos computes synthetic seismograms in a spherically symmetric non-rotating Earth by summing normal modes.Attenuation, gravity and transversal anisotropy effects may be optionally taken into account. The package computes mode eigenfrequencies and eigenfunctions, Green's functions and...

  27. 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...

  28. BurnMan

    14 Sep 2021 | Software: Download | Contributor(s): Sanne Cottaar, Timo Heister, Robert Myhill, Ian Rose, Cayman Unterborn

    BurnMan is an open source mineral physics toolbox written in Python to determine seismic velocities for the lower mantle. BurnMan calculates the isotropic thermoelastic moduli by solving the equations-of-state for a mixture of minerals defined by the user. The user may select from a list of...

  29. 2021 CIG Community Research Highlights

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

    Research highlights solicited from the community for CIG IV, 

  30. Rupture process of the 2008 Mw 8.0 Wenchuan Earthquake

    01 Apr 2021 | Workshops | Contributor(s): Guangfu Shao, Chen Ji, Zhong Lu, Ken Hudnut, Jing Liu-Zeng

    Rupture process of the 2008 Mw 8.0 Wenchuan Earthquake. June 23-27, 2008. Guangfu Shao. 

  31. Simple Elastic Dislocation Models for Interseismic Deformation in Subduction Zones

    01 Apr 2021 | Workshops | Contributor(s): Ravi V.S. Kanda, Mark Simons

    Simple Elastic Dislocation Models for Interseismic Deformation in Subduction Zones. June 23-27, 2008. Ravi V. S. Kanda. 

  32. Interseismic Deformation Associated with Three-Dimensional Faults in the Greater Los Angeles Region, California

    01 Apr 2021 | Workshops | Contributor(s): Scott T. Marshall, Michele L. Cooke, Susan E. Owen

    Interseismic Deformation Associated with Three-Dimensional Faults in the Greater Los Angeles Region, California. June 23-27, 2008. Scott T. Marshall. 

  33. Do repeating earthquakes at Parkfield talk to each other?

    01 Apr 2021 | Workshops | Contributor(s): Kate Huihsuan Chen, Roland Bürgmann, Robert M. Nadeau

    Do repeating earthquakes at Parkfield talk to each other?. June 23-27, 2008. Kate Huihsuan Chen. 

  34. Crustal deformation and block kinematics of Taiwan

    01 Apr 2021 | Workshops | Contributor(s): Ruey-Juin Rau, Kuo-En Ching, Jian-Cheng Lee, Jyr-Ching Hu

    Crustal deformation and block kinematics of Taiwan. June 23-27, 2008. Ruey-Juin Rau. 

  35. A Bayesian Approach for Inter-plate Coupling Models in Subduction Zones

    01 Apr 2021 | Workshops | Contributor(s): Fransisco Ortega, Mark Simons

    A Bayesian Approach for Inter-plate Coupling Models in Subduction Zones. June 23-27, 2008. Fransisco Ortega. 

  36. 2007 CIG/SPICE/IRIS Workshop Program and Abstracts

    30 Mar 2021 | Workshops | Contributor(s): Organizing Committee

    2007 CIG/SPICE/IRIS Workshop Program and Abstracts. October 9-11, 2007. 

  37. Heterogeneities and complexity in earthquake dynamics

    27 Feb 2021 | Workshops | Contributor(s): Jean Paul Ampuero

    Heterogeneities and complexity in earthquake dynamics. June 23-27, 2008. Jean Paul Ampuero. 

  38. What gives in the lower crust? Evidence from post-loading deformation and exhumed fault zones

    27 Feb 2021 | Workshops | Contributor(s): Roland Bürgmann

    What gives in the lower crust? Evidence from post-loading deformation and exhumed fault zones. June 23-27, 2008. Roland Bürgmann. 

  39. The Growing Wealth of Aseismic Deformation Data: What's a Modeler to Model?

    27 Feb 2021 | Workshops | Contributor(s): Evelyn Roeloffs

    The Growing Wealth of Aseismic Deformation Data: What's a Modeler to Model? June 23-27, 2008. Evelyn Roeloffs. 

  40. Shaking up Faults: Insights from the Lab on Earthquake Triggering

    27 Feb 2021 | Workshops | Contributor(s): Heather Savage

    Shaking up Faults: Insights from the Lab on Earthquake Triggering. June 23-27, 2008. Heather Savage. 

  41. Rheologic contrast between the crust and mantle: Insights from the lab and analyses of naturally deformed rocks

    27 Feb 2021 | Workshops | Contributor(s): Greg Hirth

    Rheologic contrast between the crust and mantle: Insights from the lab and analyses of naturally deformed rocks. June 23-27, 2008. Greg Hirth. 

  42. Report on semi-analytic code compilation effort

    27 Feb 2021 | Workshops | Contributor(s): Rowena Lohman

    Report on semi-analytic code compilation effort. June 23-27, 2008. Rowena Lohman. 

  43. Rapid Regional-Scale Earthquake Simulators

    27 Feb 2021 | Workshops | Contributor(s): Keith Richards-Dinger

    Rapid Regional-Scale Earthquake Simulators. June 23-27, 2008. Keith Richards-Dinger.

  44. PyLith

    27 Feb 2021 | Workshops | Contributor(s): Brad Aagaard

    PyLith. June 23-27, 2008. Brad Aagaard. 

  45. Probabilistic seismic hazard in the San Francisco Bay area based on physical models

    27 Feb 2021 | Workshops | Contributor(s): Fred Pollitz, David Schwartz

    Probabilistic seismic hazard in the San Francisco Bay area based on physical models. June 23-27, 2008. Fred Pollitz, David Schwartz.

  46. Modeling the post‐rifting deformation on the Krafla volcanic system

    27 Feb 2021 | Workshops | Contributor(s): Christopher DiCaprio, Mark Simons

    Modeling the post‐rifting deformation on the Krafla volcanic system. June 23-27, 2008. Christopher DiCaprio, Mark Simons. 

  47. Mesh Generation for Geological Applications

    27 Feb 2021 | Workshops | Contributor(s): Carl Gable

    Mesh Generation for Geological Applications. June 23-27, 2008. Carl Gable. 

  48. GeoFEST Progress

    27 Feb 2021 | Workshops | Contributor(s): Jay Parker, Gregory Lyzenga, Charles Norton, Margaret Glasscoe

    GeoFEST Progress. June 23-27, 2008. Jay Parker, Gregory Lyzenga, Charles Norton, Margaret Glasscoe.  

  49. Generating Green's Functions with Pylith

    26 Feb 2021 | Workshops | Contributor(s): Rowena Lohman

    Generating Green’s Functions with Pylith. June 23-27, 2008. Rowena Lohman.  

  50. General Unstructured Mesh Adaptation: Its Strengths and Weaknesses

    26 Feb 2021 | Workshops | Contributor(s): M.S. Shephard

    General Unstructured Mesh Adaptation: Its Strengths and Weaknesses. June 23-27, 2008. M.S. Shephard.