Computational Infrastructure
for Geodynamics (CIG)

Community-driven organization advancing Earth science by providing the infrastructure for the development and dissemination of software for geophysics and related fields.

2023 CIG Elections

Elections are open. Contact your Member Representative to vote.
Voting closes November 30.



Find community presentations here.

Annual Business Meeting   •  December 13, 5:30-7:30   •  rsvp


2022 Annual report

Download here.


Research Highlight

Rupture simulation for an M7 Hayward fault event showing strong ground motions using SW4 (left) and resulting time synched evolution of building damage for a representative 12 story concrete building through coupling to OPENSEES and NEVADA (right). Hotter colors indicate larger ground motion and major building damage, respectively. Note the complex distribution of building damage.

EQSIM: Coupled End-to-End Earthquake Hazard and Risk Simulations

Contributed by David McCallen, University of Nevada, Reno and Lawrence Berkeley National Laboratory

Over the past five years an integrated, multidisciplinary team from Lawrence Berkeley National Laboratory and Lawrence Livermore National Laboratory have developed the EarthQuake SIMulation (EQSIM) framework for fault-to-structure, regional-scale earthquake simulations under the U.S. DOE Exascale Computing Project. The EQSIM application development project is focused on creating an unprecedented computational tool set and workflow for earthquake hazard and risk assessment. Starting with a set of existing codes - SW4 (the fourth-order, 3D seismic wave propagation model developed at LLNL), NEVADA (a nonlinear, finite displacement program for building earthquake response), and OPENSEES (a nonlinear finite-element program for coupled soil-structure interaction) - EQSIM has created an end-to-end capability to simulate from the initiation of fault rupture to site-specific ground motions and ultimately to infrastructure response. EQSIM’s ultimate goal is to remove computational limitations as a barrier to simulation-based scientific exploration, understanding earthquake phenomenology, and practical earthquake hazard and risk assessments.

To achieve EQSIM goals, the SW4 code has been substantially advanced ... [full article]

Check out all Research Highlights

What Is happening?


CIG Business meeting

December 13

Join us in San Francisco for the 2023 -CIG Annual Business Meeting, where networking, insights, and success collide!  •  More Info  •   RSVP

Updated 3 November 2023

2023-2024 Webinar Series

Winter-Spring 2023

Webinars resume in February on current efforts to understand the relationship between different systems in geosciences.  •  More Info 

Updated 3 November 2023

2024 GWB Hackathon

Febuary 12-17, 2024

Join us in building the Geodynamic World Builder community by attending the first GWB hackathon.  •   More Info  •   Register

Updated 27 November 2023


Geochemistry, Geophysics, Geosystems Special Collection

Call for Papers for Frontiers in lithospheric dynamics: bridging scales through observations, experiments, and computations.   •  More Info

Deadline: 23 November 2023

Posted 17 January 2022

Get the Tools


A set of codes for MHD dynamo simulation in a rotating spherical shell using spherical harmonics expansion methods.
Current release: 2017-07-17
GNU GPL v2 or newer license


Finite-element code for dynamic and quasistatic simulations of crustal deformation, primarily earthquakes. and volcanoes
Current release: 2022-10-14
MIT license


A 3-D convection code designed for the study of dynamo behavior in spherical shell geometry. 
Current release: 2022-05-05
GNU GPL v3 or newer license



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. 
Current release: 2023-08-30
GNU GPL v2 or newer license

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