6533b857fe1ef96bd12b4f32
RESEARCH PRODUCT
Bed Topography Reconstruction in a Large Amplitude Meandering Flume: Application of Close Range Photogrammetry
Mauro Lo BruttoDonatella Terminisubject
Flow (psychology)General EngineeringHigh resolutionbed topographyclose range photogrammetryGeodesymeandering channelSettore ICAR/01 - IdraulicaFlumeDSMPhotogrammetryAmplitudeClose range photogrammetrylaboratory flumeGeotechnical engineeringDigital surfaceSettore ICAR/06 - Topografia E CartografiaGeologyCommunication channeldescription
Natural rivers are characterized by continuous variations in bed topography, especially along curved reaches. High resolution topographic data are necessary to analyze the mutual interactions between the downstream flow and the cross-stream flow, which determine the distribution of the bed-shear stress along the channel. Because of the difficulty in acquiring good and accurate data in rivers, the major part of studies have been conducted in laboratory flumes. This paper reports on a laboratory study in which the automatic digital photogrammetric survey was applied to derive the high-resolution Digital Surface Model (DSM) of the bed topography in a large amplitude meandering flume. In order to assess the advantages of the procedure, the bed profiles obtained by the DSM have been compared with those obtained using a servo-controlled vertical profiler (PV09) has been operated and discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-02-27 | Advanced Materials Research |