Multilayer-HySEA is a numerical model designed to simulate tsunamis generated by landslides, both rigid and granular. The model has been validated using experimental laboratory data provided by the US National Tsunami Hazard Mitigation Program (NTHMP), specifically during the 2017 Landslide Benchmark Workshop held in Galveston, Texas. A comprehensive summary of the benchmark problems, including an intercomparison of all models participating in the 2017 Texas workshop, is presented in [11]. . As part of this effort, Multilayer-HySEA was applied to a collection of benchmark problems involving rigid landslides, modeled as prescribed moving bathymetries. Numerical results showed good agreement with the laboratory data, validating its ability to accurately simulate tsunamis generated by rigid slides [13].

In addition, the model has been extended and validated for granular landslide cases, addressing other benchmark problems from the same workshop. In these cases, Multilayer-HySEA was coupled with a Savage–Hutter-type granular flow model, enabling accurate simulation of both landslide motion and tsunami generation [14].

More recently, the model has been evaluated in the context of selecting optimal strategies for tsunami inundation modeling due to landslides. Comparative assessments with other modeling approaches have shown Multilayer-HySEA to be an effective and accurate tool for landslide-generated tsunami hazard assessment, particularly due to its ability to capture the complexity of the generation and inundation processes [17].