E-322 侵食性河床上におけるステップ形成に関する実験的研究

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  • Experiments of the step formation on purely erosional beds

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The purely erosional beds of steep are often characterized by a series of steps. In this paper, experiments were performed in order to study the formation and the evolution of the steps. In the experiments, the wavelength of steps were found to be of the order of six to sixty times the initial flow depth before the formation of steps. It was observed that the wavelengths reduced over time. The experimental results were compared with the theoretical results derived from a linear stability analysis. The agreement between theory and experiments were found to be good.

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