Simulation of Flow, Sediment Transport, and Sediment Mobility of the Lower Coeur d'Alene River, Idaho

Berenbrock, Charles; Tranmer, Andrew W.

doi:10.3133/sir20085093

Cited by 43 publications

(42 citation statements)

References 18 publications

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“…A constant value of 0.0025 was chosen to match the values given in Ref. [6]. This drag coefficient is only used in calculating bed shear stress and a different value is used for calibrating the flow velocity (see Section 2.5).…”

Section: Sediment Erosion and Depositionmentioning

confidence: 99%

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Tidal resource extraction in the Pentland Firth, UK: Potential impacts on flow regime and sediment transport in the Inner Sound of Stroma

et al. 2015

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Large-scale extraction of power from tidal streams within the Pentland Firth is expected to be underway in the near future. The Inner Sound of Stroma in particular has attracted significant commercial interest. To understand potential environmental impacts of the installation of a tidal turbine array a case study based upon the Inner Sound is considered. A numerical computational fluid dynamics model, Fluidity, is used to conduct a series of depth-averaged simulations to investigate velocity and bed shear stress changes due to the presence of idealised tidal turbine arrays. The number of turbines is increased from zero to 400. It is found that arrays in excess of 85 turbines have the potential to affect bed shear stress distributions in such a way that the most favourable sites for sediment accumulation migrate from the edges of the Inner Sound towards its centre. Deposits of fine gravel and coarse sand are indicated to occur within arrays of greater than 240 turbines with removal of existing deposits in the shallower channel margins also possible. The effects of the turbine array may be seen several kilometres from the site which has implications not only on sediment accumulation, but also on the benthic fauna

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Section: Sediment Erosion and Depositionmentioning

confidence: 99%

“…The simplified curve we use here is thus given by: Table 1 Mean critical shear stress (t c ) conditions for the entrainment of various sediment grain sizes (D) from Ref. [6]. Given the high current velocities within the Pentland Firth, one might expect gravel to be the dominant sediment type here.…”

Section: Turbine Parameterisationmentioning

confidence: 99%

Tidal resource extraction in the Pentland Firth, UK: Potential impacts on flow regime and sediment transport in the Inner Sound of Stroma

et al. 2015

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“…(). Last, to estimate nearbed disturbance, we estimated the proportion of time the median particle was in motion by quantifying frequency that critical shear stress ( t * ) was exceeded, estimated from d 50 by linear interpolation of t * and sediment size data (see Berenbrock and Tranmer ; Appendix ).…”

Section: Methodsmentioning

confidence: 99%

Hydrogeomorphic Reference Condition and Its Relationship with Macroinvertebrate Assemblages in Southeastern U.S. Sand Hills Streams

Sefick

Kosnicki

Paller

et al. 2018

J American Water Resour Assoc

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Defining stream reference conditions is integral to providing benchmarks to ecological perturbation. We quantified channel geometry, hydrologic and environmental variables, and macroinvertebrates in 62 low‐gradient, SE United States (U.S.) Sand Hills (Level IV ecoregion) sand‐bed streams. To identify hydrogeomorphic reference condition (HGM), we clustered channel geometry deviation from expectations given watershed area (Aws), resulting in two HGM groups discriminated by area at the top of bank (Atob) residuals <0.6 m2 and >0.6 m2 predicted to be HGM reference/nonreference streams, respectively. Two independent partial least squares discriminate analyses used (1) hydrologic/environmental variables and (2) macroinvertebrate mean trait values (mT) on 10 reference/nonreference stream pairs of similar Aws for classification validation. Nonreference streams had flashier hydrographs and altered flow magnitudes, lower organic matter, coarser substrate, higher pH/specific conductivity compared with reference streams. Macroinvertebrate assemblages corresponded to HGM groupings, with mT indicative of multivoltinism, collector‐gatherer functional feeding groups, fast current‐preference taxa, and lower Ephemeroptera, Plecoptera, and Trichoptera richness and biotic integrity in nonreference streams. HGM classifications in Sand Hills, sand‐bed streams were determined from channel geometry. This easily implemented classification is indicative of contemporary hydrologic disturbance resulting in contrasting macroinvertebrate assemblages.

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“…The parent material of all particles was assumed to be quartz given the geology of the region. The critical shear stress of each particle size was calculated by using linear regression, which permitted values of critical shear stress to be determined from values published by the USGS (Berenbrock and Tranmer, 2008). The settling velocity for each particle size was determined using the settling velocity of quartz sand calculated by Soulsby (1997).…”

Section: Data Gathering and Model Buildingmentioning

confidence: 99%

“…Manning roughness values were also obtained for unvegetated portions of the reach using USGS tables (Berenbrock and Tranmer, 2008). Manning's roughness values were converted to surface roughness values using a tool included in the River 2D modeling package.…”

Section: Data Gathering and Model Buildingmentioning

confidence: 99%

Potential controls of alluvial bench deposition and erosion in southern Piedmont streams, Alabama (USA)

Haney

Davis

2015

Geomorphology

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Simulation of Flow, Sediment Transport, and Sediment Mobility of the Lower Coeur d'Alene River, Idaho

Cited by 43 publications

References 18 publications

Tidal resource extraction in the Pentland Firth, UK: Potential impacts on flow regime and sediment transport in the Inner Sound of Stroma

Tidal resource extraction in the Pentland Firth, UK: Potential impacts on flow regime and sediment transport in the Inner Sound of Stroma

Hydrogeomorphic Reference Condition and Its Relationship with Macroinvertebrate Assemblages in Southeastern U.S. Sand Hills Streams

Potential controls of alluvial bench deposition and erosion in southern Piedmont streams, Alabama (USA)

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