Journal cover Journal topic
Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Technical note
24 Oct 2014
Review status
This discussion paper is a preprint. It has been under review for the journal Hydrology and Earth System Sciences (HESS). The manuscript was not accepted for further review after discussion.
Technical Note: Surface water velocity observations from a camera: a case study on the Tiber River
F. Tauro1, G. Olivieri1, A. Petroselli2, M. Porfiri3, and S. Grimaldi1 1Dipartimento per l'innovazione nei sistemi biologici, agroalimentari e forestali, University of Tuscia, Viterbo, Italy
2Dipartimento di scienze e tecnologie per l'agricoltura, le foreste, la natura e l'energia, University of Tuscia, Viterbo, Italy
3Department of Mechanical and Aerospace Engineering, New York University Polytechnic School of Engineering, Brooklyn, NY USA
Abstract. Monitoring surface water velocity during flood events is a challenging task. Techniques based on deploying instruments in the flow are often unfeasible due to high velocity and abundant sediment transport. A low-cost and versatile technology that provides continuous and automatic observations is still not available. LSPIV (large scale particle imaging velocimetry) is a promising approach to tackle these issues. Such technique consists of developing surface water velocity maps analyzing video frame sequences recorded with a camera. In this technical brief, we implement a novel LSPIV experimental apparatus to observe a flood event in the Tiber river at a cross-section located in the center of Rome, Italy. We illustrate results from three tests performed during the hydrograph flood peak and recession limb for different illumination and weather conditions. The obtained surface velocity maps are compared to the rating curve velocity and to benchmark velocity values. Experimental findings confirm the potential of the proposed LSPIV implementation in aiding research in natural flow monitoring.

Citation: Tauro, F., Olivieri, G., Petroselli, A., Porfiri, M., and Grimaldi, S.: Technical Note: Surface water velocity observations from a camera: a case study on the Tiber River, Hydrol. Earth Syst. Sci. Discuss., 11, 11883-11904,, 2014.
F. Tauro et al.
F. Tauro et al.


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