Natural rivers are characterized by continuous variations in bed topography, especiallyalong curved reaches. High resolution topographic data are necessary to analyze the mutualinteractions between the downstream flow and the cross-stream flow, which determine thedistribution of the bed-shear stress along the channel. Because of the difficulty in acquiring good andaccurate data in rivers, the major part of studies have been conducted in laboratory flumes. This paperreports on a laboratory study in which the automatic digital photogrammetric survey was applied toderive the high-resolution Digital Surface Model (DSM) of the bed topography in a large amplitudemeandering flume. In order to assess the advantages of the procedure, the bed profiles obtained by theDSM have been compared with those obtained using a servo-controlled vertical profiler (PV09) hasbeen operated and discussed.
|Numero di pagine||5|
|Rivista||ADVANCED MATERIALS RESEARCH|
|Stato di pubblicazione||Published - 2014|
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