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Communication Dans Un Congrès Année : 2020

Sampling suspended sand in rivers using instantaneous horizontal bottle samplers: a comparison against other techniques

Résumé

This study focuses on the efficiency of a horizontal sampling bottle (Van Dorn), a low-cost instantaneous water sampler for rivers. Sand concentrations from five experiments on the Colorado River are compared with isokinetic US P-61-A1 (point-integrating) and US D-96- A1 (depth-integrating) measurements. Instantaneous point sampling is more uncertain compared to point- or depth-integrating sampling owing to the lack of time or spatial averaging and the non-isokinetic sampling design of instantaneous horizontal bottle sampler. However, theoretical sand-concentration profiles can be fitted to instantaneous point sampling to improve the estimation of near-bed concentration.
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Dates et versions

hal-02967870 , version 1 (26-10-2020)

Identifiants

  • HAL Id : hal-02967870 , version 1

Citer

Guillaume Dramais, Jérôme Le Coz, B. Camenen, Gilles Pierrefeu. Sampling suspended sand in rivers using instantaneous horizontal bottle samplers: a comparison against other techniques. River Flow 2020 (10th Conference on Fluvial Hydraulics), Jul 2020, Delft (Online), Netherlands. ⟨hal-02967870⟩
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