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.
Highlights
Method ArticleWilliam Pollocka,*, Alex Granta,, Joseph Wartmana, Grace Abou-Jaoudeb a Dept
Quantitative landslide risk analysis is a key step in creating appropriate land use policies
Limited data is available on the shelter density of refugees in Lebanon, but the UNHCR estimates that 53% of households in informal tented settlements (ITS) are overcrowded at less than 4.5 m2 per person based on systematic interviews [48]
Summary
William Pollocka,*, Alex Granta,, Joseph Wartmana, Grace Abou-Jaoudeb a Dept. Of Civil and Environmental Engineering, University of Washington, 201 More Hall, Seattle, WA 98195, United States b Dept. Of Civil Engineering, Lebanese American University, 304 Bassil Bldg., Byblos, Lebanon
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