Use of cellular automata models for assessing impacts of morphology on catchment hydrology during hyper-concentrated floods (Paris Basin, France) (original) (raw)

Hyper-concentrated floods are events regularly affecting during spring and summer the loamy plates of the Paris Basin, in North-West France. Such floods are characterized by sudden triggerings, fast rising times and important specific discharges. According to high rainfall rates, morphology is well-identified as the first-order controlling factor on floods dynamics, while cultivated areas and land use aggravate its influence in a second order. Traditionnal morphometric indexes are generally used to quantify effects of catchment form, slopes or the drainage network on hydrological processes. Therefore, these tools present important drawbacks. Indeed, they do not consider the dynamics generated by the structure of the catchments and they have been created in static planar dimension. Thus, influence of morphology on catchment hydrology has to be re-evaluated and we propose in this study a cellular automata application. RuiCells integrate the catchment geometry, slope patterns and the d...

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