Assessing issues associated with a time-integrated fluvial fine sediment sampler

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dc.contributor.authorGoharrokhi, Masoud
dc.contributor.authorPahlavan, Hoda
dc.contributor.authorLobb, David A.
dc.contributor.authorOwens, Philip N.
dc.contributor.authorClark, Shawn P.
dc.date.accessioned2020-07-10T18:28:21Z
dc.date.available2020-07-10T18:28:21Z
dc.date.issued2019-03-27
dc.date.submitted2020-07-10T18:28:21Zen_US
dc.description.abstractCollecting a representative time‐integrated sample of fluvial fine‐grained suspended sediment (<63 μm) is an important requirement for the understanding of environmental, geomorphological, and hydrological processes operating within watersheds. This study (a) characterized the hydrodynamic behaviour of a commonly used timeintegrated fine sediment sampler (TIFSS) using an acoustic Doppler velocimeter (ADV) in controlled laboratory conditions and (b) measured the mass collection efficiency (MCE) of the sampler by an acoustic Doppler current profiler under field conditions. The laboratory results indicated that the hydrodynamic evaluations associated with the original development of the TIFSS involved an underestimation of the inlet flow velocity of the sampler that results in a significant overestimation of the theoretical MCE. The ADV data illustrated that the ratio of the inlet flow velocity of the sampler to the ambient velocity was 87% and consequently, it can be assumed that a representative sample of the ambient fine suspended particles entered into the sampler. The field results showed that the particle size distribution of the sediment collected by the TIFSS was statistically similar to that for the ambient sediment in the Red River, Manitoba, Canada. The MCE of the TIFSS in the field trials appeared to be as low as 10%. Collecting a representative sample in the field was consistent with the previous findings that the TIFSS is a suitable sampler for the collection of a representative sample of sufficient mass (e.g., >1 g) for the investigation of the properties of fluvial fine‐grained suspended sediment. Hydrodynamic evaluation of the TIFSS under a wider range of hydraulic conditions is suggested to assess the performance of the sampler during high run‐off events.en_US
dc.identifier.citationGoharrokhi M, Pahlavan H, Lobb DA, Owens PN, Clark SP. Assessing issues associated with a timeintegrated fluvial fine sediment sampler. Hydrological Processes. 2019;33:2048–2056. https://doi.org/10.1002/hyp.13451en_US
dc.identifier.doihttps://doi.org/10.1002/hyp.13451
dc.identifier.urihttp://hdl.handle.net/1993/34774
dc.language.isoengen_US
dc.publisherJohn Wiley and Sons, Ltden_US
dc.rightsopen accessen_US
dc.subjectfine sediment sampleren_US
dc.subjectfluvial suspended sedimenten_US
dc.subjectmass collection efficiencyen_US
dc.subjectparticle sizeen_US
dc.titleAssessing issues associated with a time-integrated fluvial fine sediment sampleren_US
dc.typeTechnical Reporten_US
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