Regional Scale Mapping of Debris-Flow Susceptibility in the Southern French Alps

Bibliographic Data

ID9265166
AuthorsMelanie Bertrand (0000-0001-8541-3653, Université Grenoble Alpes), Frédéric Liébault (0000-0002-3155-6779, Université Grenoble Alpes), Hervé Piégay (0000-0002-3864-2119, Lyon 1 Université)
Year2017
Volume105-4
Publication date2017-01-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueRevue de géographie alpine (JOURNAL)
Journal identifiersISSN: 0035-1121 • E-ISSN: 1760-7426
PublisherOpenEdition (PUBLISHER)
DOI10.4000/rga.3543
OpenAlexW2571620234
LanguageEN
References cited21

This article describes a regional methodology of debris-flow susceptibility mapping. The implementation of this approach is based on statistical and GIS methods and makes it possible to identify catchments in the Southern French Alps, according to their morphometric (Melton index and local slope) and sediment supply conditions (active erosion zones in headwater catchments), that are prone to debris flows because of hydrometeorological forcing. This methodology has been validated on 50 sites with very high scores; the geomorphic response was correctly predicted for 80% of the sites. The map of susceptibility to the occurrence of debris flow has been integrated into the RhyTMME project’s Web platform. This platform also offers a visualisation of the rainfall’s spatial distribution (from meteorological radar data), enabling automatic real-time detection of the triggering of debris flow at the regional scale

Cartography · Debris · Debris flow · Geography · Geomorphology · Geotechnical engineering · Hydrology (agriculture) · Hydrometeorology · Landslide · Meteorology · Physical geography · Precipitation · Remote sensing · Scale (ratio) · Spatial analysis · Fire effects on ecosystems · Geology · Landslides and related hazards · Soil erosion and sediment transport

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