Effect of bed load supply on sediment transport in mountain streams

Kammerlander, Johannes; Gems, Bernhard; Kößler, Daniel; Aufleger, Markus

doi:10.1016/j.ijsrc.2017.03.004

Cited by 15 publications

(11 citation statements)

References 45 publications

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“…This could have implications from the point of view of bedload supply: SP channels have sufficient capacities to transport allogenic sources of relatively fine sediment through the channel while the streambed remains stable (Piton and Recking, ). Field researchers have already shown that sediment transport rates in SP are dependent on sediment supply (Gintz et al, ; Lenzi et al, ; Lenzi et al, ; Recking et al, ; Kammerlander et al, ). Indeed, the prediction of bedload transport in SP streams has been revealed to be very difficult due to its dependence on the availability of mobile sediment and related to the fact that many sediment transport equations do not account for the stress borne by immobile grains (Yager et al, ; Yager et al, ).…”

Section: Discussionmentioning

confidence: 99%

Particle transport in gravel‐bed rivers: Revisiting passive tracer data

Vázquez‐Tarrío

Recking

Liébault

et al. 2018

Earth Surf Processes Landf

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Data from tracer experiments were compiled and analysed in order to explore the role of geomorphological, hydrological and sedimentological constraints on fluvial gravel transport in gravel‐bed rivers. A large data set from 217 transport episodes of tagged stones were compiled from 33 scientific papers. Our analyses showed that while magnitude of peak discharge is a major control on gravel transport and mobility, tracer travel distances show some scale dependence on the morphological configuration of the channel. Our results also highlight differences in the way tracers are displaced between step–pool and riffle and pool channels. The riffle–pool sequence seems to be a more efficient trap for travelling gravels than the step–pool pair. In addition, in step–pool channels there are clear differences in tracer transport between observations of first displacements after tracer seeding (unconstrained‐stone conditions), and second and subsequent observations of tracer displacements (constrained‐stone conditions). The comparison between tracer experiments under constrained conditions and those under unconstrained conditions also highlights the importance of bed state and structures in gravel mobility. The results of this study confirm that sediment transport in gravel‐bed rivers is a complex process, whereby sedimentological and geomorphological controls are superimposed on the hydraulic forcing. © 2018 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Particle transport in gravel‐bed rivers: Revisiting passive tracer data

Vázquez‐Tarrío

Recking

Liébault

et al. 2018

Earth Surf Processes Landf

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“…Much research regarding the origin, bed morphology, flow velocity, flow resistance and sediment transport mechanism of step-pools in mountain streams has been conducted (Chin, 2002; Chin and Wohl, 2005; Church and Zimmermann, 2007; Comiti et al, 2009; Kammerlander et al, 2017; Meier and Reichert, 2005; Okasaki et al, 2006; Rickenmann and Recking, 2011; Yochum et al, 2012). Despite that, reliable flow models are lacking due to the difficulty in conducting field studies, error present in the measurement of bed slope, flow depth and flow velocity, and also due to inapt assumptions adopted while simulating mountain streams in the laboratory.…”

Section: Step-pool Mountain Streamsmentioning

confidence: 99%

“…The turbulence intensities have implications for the sediment transport flux carried by the stream flow (David et al, 2013; Marquiz and Roy, 2011). However, it is essential to understand that bedload transport equations developed for steep streams differ from the observed magnitudes up to an order of three, mostly due to the sediment-supply-limited conditions of mountain streams (Kammerlander et al, 2017; Nelson et al, 2009; Rickenmann et al, 2012; Schneider et al, 2016; Yager et al, 2012a). Hence, a significant improvement in sediment transport models according to accurate velocity data is not expected with the present state of knowledge.…”

Section: Introductionmentioning

confidence: 99%

Review of step-pool hydrodynamics in mountain streams

Kalathil

Chandra

2019

Progress in Physical Geography: Earth and Environment

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Step-pools are one of the major types of bed morphology prevalent in mountain streams. They have a unique flow structure as compared to low-gradient streams, in terms of large boundary elements and alternating super-critical and sub-critical flow conditions, which result in a non-uniform flow regime. Step-pools may also be constructed artificially to restore mountain incisions, and for creating close-to-nature fish passes. For hydraulic model development and various design considerations, the accurate prediction of flow phenomenon is required. This necessitates a detailed study of the turbulence phenomenon in natural step-pool reaches and its effect on the total flow. However, the influence of aerated conditions in step-pool hydrodynamics has not yet been adequately addressed. This paper presents a review of the mechanism of flow resistance and energy dissipation in step-pool mountain streams. Also, the significance of incorporating air entrainment in flow analysis, limitations and the way forward in modeling air–water flow in laboratory studies are discussed.

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“…During rainfall periods, bare earth (topsoils) are usually washed into reservoir and take different time for the particles to settle down below the reservoir basin with the coarse aggregate settling out first and fine aggregate settling thereafter [20,33]. Residual from fertilizers applied to aid crop yield in agricultural activities as well as industrial wastes are vital contributing elements to the degradation in the quality of water meant for drinking and domestic purposes which also impact negatively on human health and aquatic living organisms.…”

Section: Introductionmentioning

confidence: 99%

“…Sustainable use of these hydraulic structures depends on proper understanding of the erosion and sedimentation processes [35] and how to apply them to hydraulic designs. For instance, soil conservation practice, check dams, sediment bypass devices, and sluicing is often used to reduce sediment inflow or remove sediment from a reservoir to prolong the useful life of a reservoir [15,16,20,34,39] (Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

An investigative study on the volume of sediment accumulation in Tagwai dam reservoir using bathymetric and geostatistical analysis techniques

et al. 2019

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Sustainable provision of potable water for domestic, industrial and development purposes in Minna has been elusive over the years due to several factors, including lack of spatial database (locations, depth, area, volume, etc.) and the threat by siltation and land use activities within the corridors of the reservoir area. This paper utilizes the data collected from fieldwork to investigate the volume of sediment accumulated in Tagwai reservoir basin over a period of 31 years since the dam was constructed in 1978. Sediment accumulation study in a dam is one of the useful methods of gathering information needed for its monitoring, maintenance, and sustainability. Leica TC1201 (total station) was used for perimeter survey, while Raytheon DE-119 (echo sounder) was adopted for depth measurement. A comparison was made between the designed reservoir volume (28.3 × 10 6 m 3) and the computed volume (20.4 × 10 6 m 3). A loss of about (7.9 × 10 6 m 3) was recorded. Sediment accumulation gave 0.25 Mm 3 , a spread of about (0.80%) annually. Prediction and error analysis was done using geostatistical methods of Kriging/Co-kriging and Empirical Bayesian Kriging in ArcGIS software. The predicted root mean square errors are 0.0963 and 0.1189 for both methods which presented a good representation while testing with other available methods. It can be concluded that the storage capacity of the reservoir is depleting which has further exacerbated the shortage of water experienced in Minna metropolis therefore, urgent attention for de-silting is highly recommended.

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Effect of bed load supply on sediment transport in mountain streams

Cited by 15 publications

References 45 publications

Particle transport in gravel‐bed rivers: Revisiting passive tracer data

Particle transport in gravel‐bed rivers: Revisiting passive tracer data

Review of step-pool hydrodynamics in mountain streams

An investigative study on the volume of sediment accumulation in Tagwai dam reservoir using bathymetric and geostatistical analysis techniques

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