Earth Surface Dynamics
Earth Surface Dynamics
ESurf
Articles | Volume 12, issue 1
Articles | Volume 12, issue 1
https://doi.org/10.5194/esurf-12-219-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-12-219-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 12, issue 1
Research article
 | 
23 Jan 2024
Research article |  | 23 Jan 2024

Scaling between volume and runout of rock avalanches explained by a modified Voellmy rheology

Stefan Hergarten

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Short summary
Large landslides turn into an avalanche-like mode of flow at high velocities, which allows for a much longer runout than predicted for a sliding solid body. In this study, the Voellmy rheology widely used in models for hazard assessment is reinterpreted and extended. The new approach predicts the increase in runout length with volume observed in nature quite well and may thus be a major step towards a more consistent modeling of rock avalanches and improved hazard assessment.
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