Postglacial changes in fuvial morphologies of the upstream Loire catchment and the middle Cher river valley

2017

International audience; The present study aims to provide new insights of fluvial metamorphosis associated with postglacial environmental changes. Investigations were conducted on different points upstream to downstream of the Loire catchment (Loire itself, Dore river and Cher river). This work allows the role of catchment size to be discussed regarding sensitivity of fluvial environments to climate changes. Topography of the alluvial plain was analyzed using LiDAR DEM. Such datasets show topographic variations highlighting postglacial fluvial patterns and their relative chronology. Boreholes and electrical imaging survey help to estimate the geometry of former channels. Cores collected in …