Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 45 for “"bank erosion"”.
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Meander migration with physically-based bank erosion
… sediment transport, bed morphodynamics, and bank erosion -- the latter still needs a considerable amount of research, especially with regards to how the different processes responsible for bank erosion and retreat impact meander migration patterns. In this thesis, the model RVR Meander is …
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The Effects of Vegetation on Stream Bank Erosion
… improvement, habitat restoration, and stream bank stabilization. While considerable research has been conducted on the effects of riparian buffers on water quality and aquatic habitat, little is known about the influence of riparian vegetation on stream bank erosion. The overall goal of this …
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Effects of Reservoir Releases on Slope Stability and Bank Erosion
… uses, and the river ecosystem. However, riverbank stability has generally not been considered as a factor, even though release rates may have a significant effect on downstream riverbank stability. Riverbank retreat not only impacts land properties but also damages structures along the river …
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Scales of Bank Roughness and Their Relationship to Bank Erosion Processes
Stream bank erosion rates and the stabilization of channel width are poorly understood processes. There have been two distinct approaches to the study and prediction of bank erosion rates in natural streams. In order to predict bank shear stresses, scientists either define a reach as being …
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Prediction of sedimentation and bank erosion due to the construction of Kahang Dam
… understanding of the sediment dynamics and riverbank erosion downstream the dam will be of great benefit to researchers and policymakers. The present research employs the use of field techniques and estimation models to improve the (i) prediction of suspended sediment concentration, (ii) …
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Channel Migration and Bank Erosion of the Clark Fork River at Grant-Kohrs Ranch N.H.S., Western Montana
… 2007 were analyzed using ArcGIS 9.2. Areas of erosion and areas of deposition were calculated for the main meander bends, and results show that these areas are unbalanced throughout the study reach. The average current erosion rate for the time interval between 2001 and 2007 was determined to …
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Channel Migration and Bank Erosion of the Clark Fork River at Grant-Kohrs Ranch N.H.S., Western Montana
… 2007 were analyzed using ArcGIS 9.2. Areas of erosion and areas of deposition were calculated for the main meander bends, and results show that these areas are unbalanced throughout the study reach. The average current erosion rate for the time interval between 2001 and 2007 was determined to …
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Effects of bank vegetation in waterways with special reference to bank erosion, shear strength, root density and channel hydraulics
This study quantifies the erosion of banks of a river which are subjected to an experimental regime of diverse vegetative parameters. The main aspect of research is a spatial and temporal analysis of erosion under banks with natural vegetation, a cultivated wetland grass, denuded banks, and banks …
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Determining lateral river channel activity with respect to safety of pipeline crossings
… that river will expose the pipe by<br/>lateral bank erosion, as well as bed erosion, and then there is a risk that the pipe will<br/>break. Pipe failure can cause loss of revenue, repair and reparation costs, political<br/>difficulties and adverse environmental impacts. Buried pipeline crossings …
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Off-stream water sources for grazing cattle as a stream bank stabilization and water quality BMP
… in order to evaluate cattle behavior, stream bank erosion and water quality due to the installation of off-stream water sources for grazing cattle as an alternative to stream bank fencing. The study was located on two commercial cow-calf operations in southwest Virginia which utilized …
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Evaluating Streambank Retreat Prediction Using the BANCS Model in the Valley and Ridge Physiographic Province
… environment, economy, and human health. Streambanks account for an estimated 7-92% of sediment and 6-93% of total-phosphorus loads to streams depending on the watershed. Stream stabilization through stream restoration has become a common practice to satisfy the 2010 Chesapeake Bay total maximum …
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River channel dynamics mapped with dense lidar point cloud time series
… alluvial river channels that have a bed and banks made of mobile material. Interactions between the flow and the material lining the channel cause alluvial channel bends to migrate laterally, or meander, resulting in dynamic topographic changes observable over human time scales. The beauty …
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Modelling near-bank flow hydraulics
River bank erosion models are a fundamental requirement for understanding the migration and evolution of river meanders, estimating the potential for land-loss and threat to floodplain infrastructure, and predicting the delivery of contaminated floodplain sediments to aquatic ecosystems. While …
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Analysis of riprap design methods using predictive equations for maximum and average velocities at the tips of transverse in-stream structures
… improve flood control, and reduce stream bank erosion. These structures are defined as elongated obstructions having one end along the bank of a channel and the other projecting into the channel center and offer protection of erodible banks by deflecting flow from the bank to the channel …
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Characterizing channel migration habits, sediment-transport capacity and flow dynamics in peatlands: an example from Cedar Creek, Minnesota U.S.A.
… of the sediment transport conditions and bank erosion, and analysis of aerial imagery, were employed to quantify the spatial and temporal variability of channel mobility observed in Cedar Creek. Core analysis shows markedly different substrate compositions between the two reaches. In the …
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The fluvial dynamics of compound meander bends
… of mean flow, turbulence, bed morphology, bank failures and channel migration in compound loops is poorly understood. In particular, field studies of this interaction over the timescale of planform evolution are lacking. The research presented here examines the co-evolution of flow, bed …
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Evaluation of Urban Riparian Buffers on Stream Health in the Tookany Watershed, PA
… practices. Three methods were used to monitor erosion and turbidity within the Tookany Creek and its tributary Mill Run in the greater Philadelphia, PA region. To evaluate the influence of the invasive species Reynoutria japonica (Japanese knotweed) on erosion, reaches were chosen based on …
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Hydrodynamics and Morphodynamics in Kinoshita Meandering Channels
… understanding of river planform evolution and bank erosion control, together with the integration of expertise from several disciplines (engineering, geomorphology, ecology, among others), is required for the development of predictive models for river naturalization. Both, basic and applied …
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Effect of riparian land use on the biotic integrity of fish assemblages in Black Creek, Chattanooga, Tennessee
… fishes, but some level of habitat degradation (bank erosion, sedimentation, loss of riparian vegetation) was observed at all sites. Electrofishing samples yielded a total of29 species and 9,178 fish. Index ofbiotic integrity (IBI) scores ranged from 30 to 42, corresponding to IBI ratings of …
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