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Le lit majeur exceptionnel : premier bilan

Abstract : Exceptional high water bed has been discovered ten years ago. Today, we try a first assessment about this fluvial form that distinguishes between knowledges and ignorances. This form has been recognizes in two different climatic zones : Mediterranean environment and dry tropical environment but it has really been studied and sampled only in French Mediterranean environment and in arid Tunisia. In the flood risk perspective, it is necessary to characterized exceptional high water bed compared with high water bed on one hand and Holocene alluvial terraces on the other hand. Studying literature shows it has probably been mixted up with the so-called "low flooded terrace" on numerous watercourses and in various environments. Analyses performed on several studied sectors allow to precise some characteristics of those liable to floodng forms.
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  • HAL Id : hal-01571410, version 1

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Jean-Louis Ballais, Sylvain Chave, Virginie Delorme, Christophe Esposito. Le lit majeur exceptionnel : premier bilan. Revue Géographique de l'Est, Association des géographes de l’Est, 2012, Hydrosystèmes et rnjeux de gestion, 52 (3/4), 11 p. ⟨hal-01571410⟩

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