Articles | Volume 22, issue 10
Nat. Hazards Earth Syst. Sci., 22, 3183–3209, 2022
https://doi.org/10.5194/nhess-22-3183-2022
Nat. Hazards Earth Syst. Sci., 22, 3183–3209, 2022
https://doi.org/10.5194/nhess-22-3183-2022
Research article
06 Oct 2022
Research article | 06 Oct 2022

Physically based modeling of co-seismic landslide, debris flow, and flood cascade

Bastian van den Bout et al.

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Cited articles

Baartman, J. E., Jetten, V. G., Ritsema, C. J., and Vente, J.: Exploring effects of rainfall intensity and duration on soil erosion at the catchment scale using openLISEM: Prado catchment, SE Spain, Hydrol. Process., 26, 1034–1049, https://doi.org/10.1002/hyp.8196, 2012. 
Baggio, T., Mergili, M., and D'Agostino, V.: Advances in the simulation of debris flow erosion: The case study of the Rio Gere (Italy) event of the 4th August 2017, Geomorphology, 381, 107664, https://doi.org/10.1016/j.geomorph.2021.107664, 2021. 
bastianvandenbout: LISEM Project, GitHub [software], https://github.com/bastianvandenbout/LISEM, last access: 23 August 2022. 
Bout, B., Van Westen, C. J., Lombardo, L., and Jetten, V.: Integration of two-phase solid fluid equations in a catchment model for flashfloods, debris flows and shallow slope failures, Environ. Model. Software, 105, 1–16, https://doi.org/10.1016/j.envsoft.2018.03.017, 2018. 
Cance, A., Thiery, Y., Fressard, M., Vandromme, R., Maquaire, O., Reid, M. E., and Mergili, M.: Influence of complex slope hydrogeology on landslide susceptibility assessment: the case of the Pays d'Auge, Normandy, France, In Journées Aléas Gravitaires, https://www.researchgate.net/ (last access: 23 August 2022), 2017. 
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Short summary
Natural hazards such as earthquakes, landslides, and flooding do not always occur as stand-alone events. After the 2008 Wenchuan earthquake, a co-seismic landslide blocked a stream in Hongchun. Two years later, a debris flow breached the material, blocked the Min River, and resulted in flooding of a small town. We developed a multi-process model that captures the full cascade. Despite input and process uncertainties, probability of flooding was high due to topography and trigger intensities.
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