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TitleFragility curves for assessing the risks of debris flow hazards in HAZUS compatible format
AuthorPrieto, J A; Journeay, M; Ulmi, M
SourceIV Panamerican Symposium on Landslides-IVPSL, abstracts; by Sociedad Colombiana de Geotecnia; 2012.
Year2012
Alt SeriesEarth Sciences Sector, Contribution Series 20130181
PublisherSociedad Colombiana de Geotecnia-SCG (Colombian Society for Geotechnique)
MeetingIV Simposio Panamericano de Deslizamientos-IVSPD (IV Panamerican Symposium on Landslides-IVPSL); Paipa, Boyacá; CO; October 31 - November 2, 2012
Documentbook
Lang.English
Mediapaper
Subjectssurficial geology/geomorphology; modelling; debris flows; fragility curves
ProgramQuantitative risk assessment, Public Safety Geoscience
AbstractCurrent methods of risk analyses for debris flow hazards are based on empirical models that relate the depth of debris at a specific location to an expected level of economic loss. More rigorous models have been developed utilizing the overall intensity, moment flux(= depth x flow velocity2), of a debris flow at a specific location to estimate the probable state of physical damage to building types at the point of impact. This study extends the capabilities of the current models by introducing a set of corresponding fragility curves that can be used to estimate the probabilities of exceeding specific states of building damage over a continuous range of debris flow intensities. The framework presented is consistent with those developed for risk analyses of earthquake, flood, Tsunami and hurricane hazards, and have the potential to be incorporated into standardized loss estimation methods like HAZUS.
Summary(Plain Language Summary, not published)
This paper builds on previous work in debris flow risk analysis to create a set of fragility curves that can be used to estimate the building damage resulting from this type of mass movement. The curves provide probabilities of exceeding specific states of building damage over a continuous range of debris flow intensities (depth x flow velocity2). These curves essentially represent the vulnerability of the building to debris flows. The framework presented is consistent with those developed for risk analyses of earthquake, flood, tsunami, and hurricane hazards, and has the potential to be incorporated into standardized loss estimation methods like HAZUS.
GEOSCAN ID292901