Search results for "Inondation"
showing 6 items of 6 documents
Gard et Hérault : réactions, critiques et propositions des populations
2004
National audience
Événements hydroclimatiques et risque d’inondation au sud-ouest du Bénin.
2011
6 pages; International audience; Depuis la décennie 1990, le golfe de Guinée et le sud-ouest du Bénin connaît des inondations récurrentes. Ainsi,en 1999, 2007, 2009 et 2010, des inondations de grande envergure ont affecté les communes des régions littorales et sublittoralesdu Bénin, en particulier celles parcourues par le fleuve Mono, avec déplacement des populations. L’analyses’appuie sur les données mensuelles des pluies et du débit du Mono à Athiémé et du Couffo à Lanta, ainsi que sur lesobservations de terrain dans la basse vallée. Sur la période 1991-2010, les épisodes de fortes crues sont identifiés. L’analysestatistique fait ressortir une légère augmentation des précipitations depuis…
La vulnérabilité aux inondations méditerranéennes : une nouvelle démarche géographique
2007
International audience
Can uncertainty in flood hazard estimation be reduced by using high detailed topographic data for floodplain modelling?
2011
Floods are considered the most frequent natural disaster world-wide and may have serious socio economic impacts in a community. In order to accomplish flood risk mitigation, flood risk analysis and assessment are required to provide information on current or future flood hazard and risks. Hazard and risk maps involve different data, expertise and effort, depending also on the end-users. More or less advanced deterministic approaches can be used, but intuitively probabilistic approaches seem to be more correct and suited for modelling flood inundation given typical uncertainties. Two very important matters remain open for research: the calibration of hydraulic models (oriented towards the es…
Essai de réflexion sur la réaction aux inondations en milieu urbain au XVe siècle : du seuil de tolérance catastrophique des sociétés riveraines à la…
2010
International audience
Human settlement dynamics and alluvial dynamics of the Rhine River during the Holocene: Geoarchaeology of the site of Oedenburg (Haut-Rhin, France).
2007
The relationship between alluvial dynamics and control parameters such as climate are well known and understood at plurimillennial and pluriannual time-scales. But it is not really the case at multicentennial and multidecennal time-scales compatible with human society settlement time-scales. In a present and near future context, when human settlement may be affected by strong climatic variation, alluvial dynamics understanding is however a major centre of attention to the development of efficient models. To approach this scale-related question, a segment of the Upper Rhine River presenting both anastomosed and braided was investigated. This area also gives us the opportunity to study settle…