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  1. 2023 PyLith Hackathon

    02 Aug 2023 | Contributor(s): Brad Aagaard

    Workshop report

  2. 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...

  3. 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...

  4. 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...

  5. 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...

  6. 2021 SMOREs Introduction

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

    2021 SMOREs ShowcaseJohn Naliboff, New Mexico Tech

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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...

  12. Convolutional Neural Network Detects Strombolian Eruptions at Mount Erebus, Antarctica

    25 Mar 2021 | Workshops | Contributor(s): Gabriele Morra, Taylor Privat, Brian Dye, Leila Honarbakhsh

    Convolutional Neural Network Detects Strombolian Eruptions at Mount Erebus, Antarctica. September 18-19, 2019. Gabriele Morra, Taylor Privat, Brian Dye, Leila Honarbakhsh. 

  13. Image-Based Processing Methods in Develocorder Films Using Machine Learning: Application to the Rangely Earthquake Control Experiment

    25 Mar 2021 | Workshops | Contributor(s): Kaiwen Wang, Weiqiang Zhu, William L. Ellsworth, Gregory C. Beroza

    Image-Based Processing Methods in Develocorder Films Using Machine Learning: Application to the Rangely Earthquake Control Experiment. September 18-19, 2019. Kaiwen Wang, Weiqiang Zhu, William L. Ellsworth, Gregory C. Beroza. 

  14. Use Cases for Legacy Seismic Data

    25 Mar 2021 | Workshops | Contributor(s): Tim Ahern

    Use Cases for Legacy Seismic Data. September 18-19, 2019. Tim Ahern.

  15. A Strawman for Legacy Data Metadata From Using International Input

    25 Mar 2021 | Workshops | Contributor(s): Tim Ahern

    A Strawman for Legacy Data Metatdata From Using International Input. September 18-19, 2019. Tim Ahern. 

  16. MSU's Analog Digitization Challenges

    25 Mar 2021 | Workshops | Contributor(s): Daniel Burk, Kevin Mackey, Kaitlyn Burkhart, Viktor

    MSU's Analog Digitization Challenges. September 18-19, 2019. Daniel Burk, Kevin Mackey, Kaitlyn Burkhart, Viktor. 

  17. Metadata Collected by Legacy Data Rescue Projects

    25 Mar 2021 | Workshops | Contributor(s): Tim Ahern

    Metadata Collected by Legacy Data Rescue Projects. September 18-19, 2019. Tim Ahern. 

  18. Legacy Data Holdings Held By The U.S. Geological Survey in Colorado

    25 Mar 2021 | Workshops | Contributor(s): Jim Dewey

    Legacy Data Holdings Held By The U.S. Geological Survey in Colorado. September 18-19, 2019. Jim Dewey. 

  19. The Mexican Seismogram Library OnLine: preservation and dissemination of historical data on seismograms 1904-2015

    25 Mar 2021 | Workshops | Contributor(s): Xyoli Pérez-Campos, Saúl Armendáriz Sánchez, Víctor H. Espíndola, Jesús A. Pérez, Minerva Castro Escamilla, Caridad Cárdenas Monroy, Perla Sosa Zaragoza, Luis Manuel Casiano Casiano

    The Mexican Seismogram Library OnLine: preservation and dissemination of historical data on seismograms 1904-2015. September 18-19, 2019. Xyoli Pérez-Campos, Saúl Armendáriz Sánchez, Víctor H. Espíndola, Jesús A. Pérez,...

  20. Geophysical Data National Archive of IGN-Spain

    25 Mar 2021 | Workshops | Contributor(s): Josep Batlló, Jose Manuel Tordesillas, Marina López-Muga, Irene Benayas

    Geophysical Data National Archive of IGN-Spain. September 18-19, 2019. Josep Batlló, Jose Manuel Tordesillas, Marina López-Muga, Irene Benayas. 

  21. Preserving analogue seismograms of regional networks and other documents. Experience at the Institut Cartogràfic i Geològic de Catalunya

    25 Mar 2021 | Workshops | Contributor(s): Josep Batlló, Jose Antonio Jara, Maria Teresa Merino, Germán Solé

    Preserving analogue seismograms of regional networks and other documents. Experience at the Institut Cartogràfic i Geològic de Catalunya. September 18-19, 2019. Josep Batlló, Jose Antonio Jara, Maria Teresa Merino, Germán Solé. 

  22. Dealing with old seismic data: something like a SWOT

    25 Mar 2021 | Workshops | Contributor(s): Josep Batlló

    Dealing with old seismic data: something like a SWOT. September 18-19, 2019. Josep Batlló. 

  23. A Very Brief Tour of the U.S. Underground Nuclear Explosion Legacy Data

    25 Mar 2021 | Workshops | Contributor(s): Garrett Euler

    A Very Brief Tour of the U.S. Underground Nuclear Explosion Legacy Data. September 18-19, 2019. Garrett Euler. 

  24. Archival efforts at AVO and AEC

    25 Mar 2021 | Workshops | Contributor(s): Jim Dixon

    Archival efforts at AVO and AEC. September 18-19, 2019. Jim Dixon. 

  25. One million paper seismograms from New Zealand, Antarctica, and the Pacific

    25 Mar 2021 | Workshops | Contributor(s): Paul Viskovic

    One million paper seismograms from New Zealand, Antarctica, and the Pacific. September 18-19, 2019. Paul Viskovic. 

  26. Calibration Analysis of ALQ

    25 Mar 2021 | Workshops | Contributor(s): Adam Ringler

    Calibration Analysis of ALQ. September 18-19, 2019. Adam Ringler. 

  27. Relative Time Corrections For Digitized Analog Records

    25 Mar 2021 | Workshops | Contributor(s): Thomas Lee, Miaki Ishii

    Relative Time Corrections For Digitized Analog Records. September 18-19, 2019. Thomas A. Lee, Miaki Ishii. 

  28. Historical Seismogram Analysis

    25 Mar 2021 | Workshops | Contributor(s): Alberto Michelini, Matteo Quintiliani, Silvia Filosa

    Historical Seismogram Analysis. September 18-19, 2019. Alberto Michelini, Matteo Quintiliani, Silvia Filosa. 

  29. SKATE: A web-based seismogram digitization tool

    25 Mar 2021 | Workshops | Contributor(s): Andrew Barlett

    SKATE: A web-based seismogram digitization tool. September 18-19, 2019. Andrew Barlett. 

  30. Restoration and Recovery of Historical Seismic Records from the Former Soviet Union

    25 Mar 2021 | Workshops | Contributor(s): Daniel Burk, Kevin Mackey, Kaitlyn Burkhart, Ken Abrams, Inna Sokolova

    Restoration and Recovery of Historical Seismic Records from the Former Soviet Union. September 18-19, 0219. Daniel Burk, Kevin Mackey, Kaitlyn Burkhart, Ken Abrams, Inna Sokolova. 

  31. A New Seismic Catalog in the Caucasus Using Digitized Legacy Data

    25 Mar 2021 | Workshops | Contributor(s): Ana Aguiar, Rengin Gök, Tea Godoladze

    A New Seismic Catalog in the Caucasus Using Digitized Legacy Data. September 18-19, 2019. Ana Agular, Regin Gök, Tea Godoladze. 

  32. Importance of Legacy Data for National Security

    24 Mar 2021 | Workshops | Contributor(s): Brian Young

    Importance of Legacy Data for National Security. September 18-19, 2019. Brian Young. 

  33. Work done, and work still needed, to preserve and make usable the analog seismograms of nuclear test explosions conducted in all environments

    24 Mar 2021 | Workshops | Contributor(s): Paul Richards

    Work done, and work still needed, to preserve and make usable the analog seismograms of nuclear test explosions conducted in all environments. September 18-19, 2019. Paul Richards.

  34. Analysis of unusual earthquakes using 'legacy' data

    24 Mar 2021 | Workshops | Contributor(s): Meredith Nettles, John Wilding, Göran Ekström

    Analysis of unusual earthquakes using 'legacy' data. September 18-19, 2019. Meredith Nettles, John Wilding, Göran Ekström. 

  35. Waveforms and Beyond: Analysis of Seismogram, Phase and Intensity Data for M 6-7 Pre-digital Era Earthquakes

    24 Mar 2021 | Workshops | Contributor(s): Diane Doser

    Waveforms and Beyond: Analysis of Seismogram, Phase and Intensity Data for M 6-7 Pre-digital Era Earthquakes. September 18-19, 2019. Diane Doser. 

  36. 1907, 1915, 1941: Examples of the Critical Value of Historical Seismograms for the Study of Subduction Processes

    24 Mar 2021 | Workshops | Contributor(s): Emile Okal

    1907, 1915, 1941: Examples of the Critical Value of Historical Seismograms for the Study of Subduction Processes. September 18-19, 2019. Emile Okal. 

  37. 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...

  38. 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...

  39. 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...

  40. 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...

  41. 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...

  42. 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...

  43. 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...

  44. 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...

  45. 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...

  46. 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...

  47. 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...

  48. 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...

  49. 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...

  50. 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...