Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 26, issue 10
Articles | Volume 26, issue 10
https://doi.org/10.5194/nhess-26-5185-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-5185-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 10
Research article
 | 
23 Oct 2026
Research article |  | 23 Oct 2026

Runout mechanism of landslides in alluvial basins with emphasis on the impact and erosion effects

Ye Chen, Fawu Wang, Maximillian Van Wyk de Vries, Weichao Liu, Bo Zhang, and Changbao Guo

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Anura3D MPM Research Community: Scientific Manual version 2022, http://www.anura3d.com (last access: 14 October 2026), 2022. a
Bouchut, F., Fernández-Nieto, E. D., Mangeney, A., and Lagrée, P.-Y.: On new erosion models of Savage–Hutter type for avalanches, Acta Mech., 199, 181–208, https://doi.org/10.1007/s00707-007-0534-9, 2008. a
Chen, Y.: Research Data: Runout Mechanism of Landslides in Alluvial Basins, Science Data Bank [data set], https://doi.org/10.57760/sciencedb.28790, 2025. a
Collins, B. D. and Reid, M. E.: Enhanced landslide mobility by basal liquefaction: The 2014 State Route 530 (Oso), Washington, landslide, GSA Bulletin, 132, 451–476, https://doi.org/10.1130/B35146.1, 2019. a
Crosta, G. B., Imposimato, S., and Roddeman, D.: Granular flows on erodible and non erodible inclines, Granul. Matter, 17, 667–685, https://doi.org/10.1007/s10035-015-0587-8, 2015. a
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Landslides in alluvial basins can travel farther than expected. To investigate this abnormal mobility, we examined a representative event and performed mechanical tests on erodible alluvial sand. Results show that landslide impact on saturated sediment can create a fluid-like layer, enabling long travel distances. Simulations showed that the severity of this effect depends on how fragile and deformable the materials are.
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