Modeling large‐scale landform evolution with a stream power law for glacial erosion (OpenLEM v37): benchmarking experiments against a more process-based description of ice flow (iSOSIA v3.4.3)

Liebl, Moritz; Robl, Jörg; Hergarten, Stefan; Egholm, David Lundbek; Stüwe, Kurt

doi:https://doi.org/10.5194/gmd-16-1315-2023

Articles | Volume 16, issue 4

https://doi.org/10.5194/gmd-16-1315-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-16-1315-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 4

Model evaluation paper

|

24 Feb 2023

Model evaluation paper |

| 24 Feb 2023

Modeling large‐scale landform evolution with a stream power law for glacial erosion (OpenLEM v37): benchmarking experiments against a more process-based description of ice flow (iSOSIA v3.4.3)

Moritz Liebl, Jörg Robl, Stefan Hergarten, David Lundbek Egholm, and Kurt Stüwe

Model code and software

egusphere-2022-352 Moritz Liebl https://doi.org/10.5281/zenodo.6557805

Video supplement

egusphere-2022-352-videos Moritz Liebl https://doi.org/10.5281/zenodo.6557805

Short summary

In this study, we benchmark a topography-based model for glacier erosion (OpenLEM) with a well-established process-based model (iSOSIA). Our experiments show that large-scale erosion patterns and particularly the transformation of valley length geometry from fluvial to glacial conditions are very similar in both models. This finding enables the application of OpenLEM to study the influence of climate and tectonics on glaciated mountains with reasonable computational effort on standard PCs.