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TauP
29 Feb 2024 | Software: Download | Contributor(s): H. Philip Crotwell (primary-developer), Thomas J. Owens
The TauP Toolkit is a seismic travel time calculator. In addition to travel times, it can calculate derivative information such as ray paths through the earth, pierce and turning points. It handles many types of velocity models and can calculate times for virtually any seismic phase with a...
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Fault strength evolution during the seismic cycle: Insights from the laboratory
10 Mar 2023 | Webinars | 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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SPECFEM3D Cartesian
30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (primary-developer), Jeroen Tromp (primary-developer), Daniel Peter (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...
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SPECFEM3D GLOBE
30 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte, Jeroen Tromp (primary-developer), Daniel Peter (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...
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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...
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SPECFEM2D
29 Oct 2021 | Software: Download | Contributor(s): Dimitri Komatitsch (primary-developer), Jean-Pierre Vilotte (primary-developer), Daniel Peter (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...
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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.
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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...
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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...
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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...
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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...
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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...
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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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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...
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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PyLith
27 Feb 2021 | Workshops | Contributor(s): Brad Aagaard
PyLith. June 23-27, 2008. Brad Aagaard.
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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.
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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.
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Mesh Generation for Geological Applications
27 Feb 2021 | Workshops | Contributor(s): Carl Gable
Mesh Generation for Geological Applications. June 23-27, 2008. Carl Gable.
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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.
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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.
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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.
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Gale
26 Feb 2021 | Workshops | Contributor(s): Walter Landry
Gale. June 23-27, 2008. Walter Landry.
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Development of Variational Data Assimilation for Active Tectonics Studies
26 Feb 2021 | Workshops | Contributor(s): Kush Tandon, Gary Egbert
Development of Variational Data Assimilation for Active Tectonics Studies. June 23-27, 2008. Kush Tandon, Gary Egbert.
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CUBIT: Geometry and Mesh Generation Toolkit
26 Feb 2021 | Workshops | Contributor(s): Emanuele Casarotti
CUBIT: Geometry and Mesh Generation Toolkit. June 23-27, 2008. Emanuele Casarotti.
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Crustal deformation in Iceland
26 Feb 2021 | Workshops | Contributor(s): Freysteinn Sigmundsson
Crustal deformation in Iceland. June 23-27, 2008. Freysteinn Sigmundsson.
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Community Benchmarks
26 Feb 2021 | Workshops | Contributor(s): Charles WIlliams
Community Benchmarks. June 23-27, 2008. Charles Williams.
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Workshop Final Report: Numerical Modeling of Crustal Deformation Associated with Earthquake Faulting
26 Feb 2021 | Workshops | Contributor(s): Andrew Freed, Brad Aagaard, Carl Gable, Mark Simons
Workshop Final Report: Numerical Modeling of Crustal Deformation Associated with Earthquake Faulting. June 23-27, 2008. Andrew Freed, Brad Aagaard, Carl Gable, Mark Simons.
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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...