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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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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 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 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 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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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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CIG-Magma Workshop Schedule
01 Apr 2021 | Workshops | Contributor(s): Staff
CIG-Magma Workshop Schedule. August 18-19, 2006.
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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2016 Software Practices in Computational Science Communities – an Overview
04 Feb 2021 | Webinars | Contributor(s): Anshu Dubey
Scientific code developers typically adopt software processes derived from the mainstream (non-scientific) community when continuing without them becomes impractical. However, many software best practices need modification and/or customization, partly because the codes are used for...
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2016 Resolution analysis by random probing
04 Feb 2021 | Webinars | Contributor(s): Andreas Fichtner, Tristan van Leeuwen
We present a new method for resolution analysis in tomography, based on stochastic probing of the Hessian or resolution operators. Key properties of the method are (i) low algorithmic complexity and easy implementation, (ii) applicability to any tomographic technique, including full-waveform...
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2016 Statistical and computational challenges of constraining greenhouse gas budgets
04 Feb 2021 | Webinars | Contributor(s): Anna M. Michalak
Predicting future changes to the global carbon cycle (and therefore climate) and quantifying anthropogenic emissions of greenhouse gases (GHGs) both require an understanding of net GHGs emissions and uptake across a variety of spatial and temporal scales. This talk will explore some of the...
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2016 Uncertainty Quantification in Computational Models of Physical Systems
04 Feb 2021 | Webinars | Contributor(s): Habib Najm
Models of physical systems typically involve inputs/parameters that are determined from empirical measurements, and therefore exhibit a certain degree of uncertainty. Estimating the propagation of this uncertainty into computational model output predictions is crucial for purposes...
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2016 Verification, Validation, and Predictive Capability: What's What?
04 Feb 2021 | Webinars | Contributor(s): William Oberkampf
Engineering and geosciences organizations must increasingly rely on computational simulation for the design, predicted response, and performance of manmade and natural systems. Computational analysts, decision makers, and regulatory authorities who rely on simulation should have practical...
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2015 ASPECT: From Benchmarking to 3D Subduction Applications
04 Feb 2021 | Webinars | Contributor(s): Cedric Thieulot, Anne Glerum, Menno Fraters, Wim Spakman
ASPECT, the Advanced Solver for Problems in Earth's Convection, is an extensible open source, community supported code. The code is being applied to a broad range of problems in geodynamics. This talk will explore the community's efforts in benchmarking, implementation of...
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2015 An introduction to Virtual Quake
04 Feb 2021 | Webinars | Contributor(s): Kasey Schultz, John Wilson
This webinar will introduce Virtual Quake, a boundary element code that performs simulations of fault systems based on stress interactions between fault elements to understand long term statistical behavior. The webinar will cover:Downloading, installing and running Virtual...
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2015 Simulating seismic wave propagation with SW4
04 Feb 2021 | Webinars | Contributor(s): Anders Petersson
This webinar describes how to use the SW4 code to simulate ground motion due to earthquakes. After a brief overview of the numerical method, we describe how to set up a simulation in terms of seismic sources, the material model, visco-elastic attenuation, and topography. We also present some of...
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2015 An introduction to BurnMan - a mineral physics toolkit
03 Feb 2021 | Webinars | Contributor(s): Sanne Cottar, Timo Heister, Bob Myhill, Ian Rose, Cayman Unterborn
In this webinar we will introduce the extensible, open source mineral physics toolkit BurnMan. This software allows the user to calculate the elastic and thermodynamic properties of rocks, minerals, fluids and melts based on the properties of end-member phases. BurnMan is bundled with...
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Marc Spiegelman Wishlist Presentation
24 Jan 2021 | Workshops | Contributor(s): Marc Spiegelman
Marc Spiegelman Wishlist Presentation. August 18-19, 2006. Marc Spiegelman.
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Laurent Montesi Wishlist Presentation
24 Jan 2021 | Workshops | Contributor(s): Laurent Montesi
Laurent Montesi Wishlist Presentation. August 18-19, 2006. Laurent Montesi.
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Multi-Scale Parallel computing in Laboratory of Computational Geodynamics
24 Jan 2021 | Workshops | Contributor(s): David Yuen
Multi-Scale Parallel computing in Laboratory of Computational Geodynamics, Chinese Academy of Sciences. August 18-19, 2006. David Yuen.
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GyPSM: Geodynamic and Petrological Synthesis Model
24 Jan 2021 | Workshops | Contributor(s): Laura Baker, Paula Smith
GyPSM: Geodynamic and Petrological Synthesis Model. August 18-19, 2006. Laura Baker, Paula Smith.
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Software Tools for Magma Convection at CIG
09 Jan 2021 | Workshops | Contributor(s): Shijie Zhong
The Software Tools for Mantle Convection at CIG: The Current State. August 18-19, 2006. Shijie Zhong.
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Experimental Benchmarks for Modeling of Stress-Driven Melt Segregation
09 Jan 2021 | Workshops | Contributor(s): Ben Holtzman
A few thoughts on experimental benchmarks for modeling of stress-driven melt segregation. August 18-19, 2006. Ben Holtzman.
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Subduction Benchmarks
09 Jan 2021 | Workshops | Contributor(s): Scott King, Claire Currie, Richard Katz, Marc Spiegelman., Peter van Keken
A benchmark for the modeling of subduction zone thermal structure. August 18-19, 2006. Scott King, Peter van Keken, Claire Currie, Richard Katz, Marc Spiegelman.
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Magma-Mantle Dynamics
09 Jan 2021 | Workshops | Contributor(s): Garrell Ito
Magma-Mantle Dynamics. August 18-19, 2006. Garrell Ito.
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Computational Science Issues
09 Jan 2021 | Workshops | Contributor(s): Wolfgang Bangerth
Computational Science Issues. August 18-19, 2006. Wolfgang Bangerth.
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Modeling the thermal structure
09 Jan 2021 | Workshops | Contributor(s): Laurent G.J. Montési, Mark D. Behn, Jennifer L. Barry
Modeling the thermal structure of plate boundaries with COMSOL Multiphysics (FEMLAB). August 18-19, 2006. Laurent G.J. Montési, Mark D. Behn, Jennifer L. Barry.
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Model Coupling
09 Jan 2021 | Workshops | Contributor(s): Matthew Knepley
Model Coupling. August 18-19, 2006. Matthew Knepley.
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Formulations for magma dynamics
09 Jan 2021 | Workshops | Contributor(s): Marc Spiegelman
Formulations for magma dynamics: The McKenzien view of the world. August 18-19, 2006. Marc Spiegelman.
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Petrological-thermomechanical modelling
09 Jan 2021 | Workshops | Contributor(s): David Yuen, James Connolly, Taras Gerya
Self-consistent petrological-thermomechanical modelling: new geodynamic modelling approach. August 18-19, 2006. Taras V. Gerya , James A.D. Connolly, David A. Yuen.
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Petrological-thermochemical modeling of geodynamic processes - methodology and examples
09 Jan 2021 | Workshops | Contributor(s): David Yuen, Taras Gerya, James Connolly
Petrological-thermochemical modeling of geodynamic processes - methodology and examples. August 18-19, 2006. David Yuen, Taras Gerya, James Connolly.
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Two phase theory of compaction and damage
09 Jan 2021 | Workshops | Contributor(s): David Bercovici, Yanick Ricard
Two phase theory of compaction and damage. August 18-19, 2006. David Bercovici, Yanick Ricard.
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Basic Ingredients for a useful theory of magma dynamics
09 Jan 2021 | Workshops | Contributor(s): Marc Spiegelman
Basic Ingredients for a useful theory of magma dynamics. August 18-19, 2006. Marc Spiegelman.
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A case for robust micromechanical models
09 Jan 2021 | Workshops | Contributor(s): Saswata Hier-Majumder
A case for robust micromechanical models. August 18-19, 2006. Saswata Hier-Majumder.
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Body wave tomography
09 Jan 2021 | Workshops | Contributor(s): Peter Kelemen Doug Wiens
Body wave tomography. August 18-19, 2006. Peter Kelemen Doug Wiens.
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Intro to CIG
09 Jan 2021 | Workshops | Contributor(s): Marc Spiegelman, Mike Gurnis
And now, a word from our Sponsor….What is CIG? August 18-19, 2006. Marc Spiegelman, Mike Gurnis.
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Rheologic Controls on Slab Dynamics
27 Dec 2020 | Workshops | Contributor(s): Magali Billen
Rheologic Controls on Slab Dynamics. June 23, 2005. Magali Billen.
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Plumbing the Depths
27 Dec 2020 | Workshops | Contributor(s): Marc Spiegelman, Richard Katz
Plumbing the Depths: Towards an integration of magma dynamics and global mantle convection. June 23, 2005. Marc Spiegelman, Richard Katz.
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Grain size-dependent viscosity convection
27 Dec 2020 | Workshops | Contributor(s): Slava Solomatov
Grain size-dependent viscosity convection. June 23, 2005. Slava Solomatov.
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Subduction Dynamics
27 Dec 2020 | Workshops | Contributor(s): Mike Gurnis
Subduction Dynamics: From Initiation to Maturity. June 22, 2005. Mike Gurnis, Chad Hall.