Abstract:
Quantitative landslide risk analysis is a key step in creating appropriate land use policies. However, regional scale landslide hazard and risk studies are traditionally based on a single, infinite-slope style of failure, belying the differing consequences of a diverse range of failure modes. In this paper we expand an existing multimodal coseismic landslide hazard model to create a method for multimodal, multi-trigger quantitative landslide risk analysis and apply it to the country of Lebanon.
•Physics-based, mode-specific models for coseismic and precipitation-induced landslides capture the effects of multiple failure types and triggering scenarios.
•A new model for analyzing slope stability against rotational failures allows for efficient, regional scale assessments.
•Open-source mapping of built-up area is used to identify elements at risk.
Citation:
Pollock, W., Grant, A., Wartman, J., & Abou-Jaoude, G. (2019). Multimodal method for landslide risk analysis. MethodsX, 6, 827-836.