Using thermal tracers to estimate flow velocities of shallow flows: laboratory and field experiments

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Abstract

Accurate measurement of shallow flows is important for hydraulics, hydrology and water resources management. The objective of this paper is to discuss a technique for shallow flow and overland flow velocity estimation that uses infrared thermography. Laboratory flumes and different bare, vegetated and paved field surfaces were used to test the technique. Results show that shallow flow surface velocities estimated using thermal tracers and infrared technology are similar to estimates obtained using the Acoustic Doppler Velocimeter; similar results were also obtained for overland flow velocity estimates using thermography, here comparing with the dye tracer technique. The thermographic approach revealed some potential as a flow visualization technique, and leaves space for future studies and research.

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Journal of Hydrology and Hydromechanics

The Journal of Institute of Hydrology SAS Bratislava and Institute of Hydrodynamics CAS Prague

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IMPACT FACTOR 2017: 1.714
5-year IMPACT FACTOR: 1.639



CiteScore 2017: 1.91

SCImago Journal Rank (SJR) 2017: 0.599
Source Normalized Impact per Paper (SNIP) 2017: 1.084

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