Geoscientific Model Development
Geoscientific Model Development
GMD
Articles | Volume 19, issue 1
Articles | Volume 19, issue 1
https://doi.org/10.5194/gmd-19-369-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/gmd-19-369-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 1
Development and technical paper
 | 
14 Jan 2026
Development and technical paper |  | 14 Jan 2026

Overcoming the numerical challenges owing to rapid ductile localization with DEDLoc (version 1.0.0)

Arne Spang, Marcel Thielmann, Casper Pranger, Albert de Montserrat, and Ludovic Räss

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Short summary
Concentration of deformation is difficult to capture accurately in computer simulations. We present a number of challenges associated with concentrated viscous deformation and demonstrate strategies to overcome them. The strategies include automatic selection of appropriate time steps to react to rapid changes in model behavior, automatic rescaling to avoid rounding errors, and three methods to prevent model instability. This way, we are able to accurately capture very fast viscous deformation.
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Advances in numerical modelling of geological processes