Analysis of variations in channel width and sediment supply on riffle-pool dynamics, before and after dam removal
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Many gravel-bed rivers feature quasi-regular alternations of shallow and deep areas known as riffle-pool sequences, which in straight reaches are often forced by variations in channel width. The mechanisms responsible for the formation and maintenance of riffle- pool sequences are still poorly understood. There is also much uncertainty in the basic understanding of how fluvial systems respond and readjust to large sediment fluxes through time (i.e. dam removal). Here we present physical experiments, numerical modeling, and field observations aimed at improving our understanding of how downstream ...