Bed morphology and stability in steep open channels

Bed Morphology and stability of steep open channels Steep headwater streams are often characterised by alternating steps and pools (Fig.1). The specific pattern can be seen as image of the complex interaction between topography, hydrology, geology and vegetation of a river catchment area. As bed roughness is large relatively to flow depth, the flow field and thus flow resistance and stability are largely influenced by bed morphology. The purpose of the present research project is to investigate the bed morphology and the stability in steep open channels in order to enlarge the physical background for hazard assessment. A better knowledge of bed morphology and stability is also required for the design of stable and nature-orientated man-made structures.

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