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.

Spring & Summer Events

Registration is now open for the SPECFEM Developers Workshop, and the ASPECT and Rayleigh Hackathons.

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?


2024 SPECFEM Developers Workshop

April 30, 2024

Bringing the developers community together to showcase the recent code developments and discuss future development plans  •   More Info  •   Register

Updated 15 March 2024

2023-2024 Webinar Series

Winter-Spring 2023/2024

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

Updated 3 November 2023


2024 ASPECT Hackathon

May 28 - June 7, 2024

Join us in in furthering the development of the mantle convection code ASPECT and building its user community.  •   More Info   •  Apply

Updated 15 March 2024


Webinar -  I. Effect of mantle convection on the geodynamo behaviour in numerical models. II. The Influence of Mantle Convection on Earth’s Geomagnetic Field Observables.

April 11, 2024

I. Thomas Frasson, Université Grenoble Alpes. Paleomagnetic evidence shows that the behaviour of the geodynamo ...  

II. Daniel Thallner, University of Florida. Studying the geomagnetic field and its variations over geological timescales provides insights into the geodynamo and deep Earth processes. ... •  More Info  •  Register

Posted 18 March 2024


2024 Rayleigh Hackathon

June 16-22, 2024

JWork together to implement features into Rayleigh and improve/debug existing functionality and documentation   •   More Info   •   Apply

Updated 15 March 2024


2024 CDM Workshop

June 10-14, 2024

The 2024 Crustal Deformation Modeling Workshop will focus on computational models addressing crustal deformation.   •   More Info  


Updated 19 February 2024

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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