Code and datasets for 3D numerical modelling of slab tearing and surface expressions

This repository submission contains the 3D thermo-mechanical numerical modelling code I3ELVIS developed by the workgroup of Prof. Taras Gerya (ETH Zürich). The code is based on finite-difference and marker-in-cell methods (Gerya & Yuen, 2003, 2007; Gerya, 2019). The code solves the momentum, continuity, and energy equations on the fixed Eulerian grid and transports the physical properties by Lagrangian markers using the velocity field. A more detailed description of the code, including the governing equations and the adopted rheological model can be found in various published literature (Andrić-Tomašević et al., 2023; Boonma et al., 2023; Maiti et al., 2024). Interested users are recommended to contact Prof. Taras Gerya (taras.gerya@erdw.ethz.ch). The repository also provides input and output files to run and reproduce model results and manuscript figures of Maiti et al., 2026 (Nature Communications), Paraview States for processing .vtr result files and visualizing the model output data, and Python scripts to generate varios plots from .txt data files.