Abstract:Surface flow patterns visualized by water surface ripples, foam, drifting wood, or local differences in color of water are analyzed by a specific PIV (Particle Image Velocimetry) technique developed by one of the authors that can treat oblique angled video images. The point of this paper is to check the accuracy of discharge measurements with PIV by comparing it with those obtained by the other velocity measurement techniques such as the float method, the method that uses aerial photographs and the Manning's f… Show more
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