Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

landslides saturated by fluid, analogue modelling for subaqueous environments is often considered equivalent to air and is typically conducted in a subaerial environment (Bonnet et al., 2004). Analogous modelling remains an effective tool for investigating landslide dynamics across various contexts. Symeon et al. (2023) illustrate the value of analogue experimentation in understanding debris avalanche propagation mechanisms and dynamics, emphasizing the technique's relevance despite its limitations. The results from our models suggest that the alluvial mitigation measures, especially those integrated into Profile B, effectively reduced the hypothetical landslide runout by 80 m compared to the non-intervened slope. This reduction demonstrates the potential benefits of implementing well-designed mitigation strategies. However, the study also indicates that certain variables, such as the precise interaction between alluvial materials and containment elements, warrant further exploration. Future studies should consider refining the experimental setup to explore these variables more comprehensively. This could include testing different configurations, varying triggers, and conducting experiments from a top-down perspective to assess lateral runout when the material is not fully contained. Such enhancements could provide more accurate insights into the nature of mass removal events and improve the design of alluvial mitigation strategies. Fig. 6: Location of the housing units designed for vertical evacuation in case of a tsunami. Note the flood elevation based on previous studies, and the proposal of resilient housing units located above this flood elevation to shelter Fig. 6: Location of the housing units designed for vertical evacuation in case of a tsunami. Note the flood elevation based on previous studies, and the proposal of resilient housing units located above this flood elevation to shelter evacuees.