Author(s): J. Aberle; M. Henning; B. Hentschel

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Keywords: No Keywords

Abstract: This paper presents results from a preliminary investigation on the applicability of the random field approach to describe bed form topography and movement in alluvial rivers. The study is based on data from experiments carried out in a physical scale model of the Oder River using polysterene grains instead of sand as movable bed material. Bed form topography was measured in a straight section of the model with high spatial and temporal resolution using a novel 3D-photogrammetric measurement system. Time series measurements of bed topography are used to quantify3D bed form dynamics by statistical parameters and a cross-correlation function. The results of the time series measurements are compared with statistical parameters obtained from the bed topography measured in dry conditions and over a larger spatial scale.

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Year: 2009