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Showing 1 to 20 of 193 for “"Suspended sediment"”.
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Suspended sediment concentration in Alpine glacial meltwaters
Suspended sediment concentration in meltwaters draining from Alpine glaciers vary considerably both diurnally and seasonally. In order to characterise sediment variability, sub-daily close-interval sampling measurements of suspended sediment concentrations are usually undertaken. In close-interval …
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Suspended sediment erosion in laboratory flume experiments
… experiments are used to examine the role of suspended sediment abrasion in bedrock channel erosion. A range of topographies was used, from a planar bed to a sinuous and scalloped inner channel. Experiments were run separately with bedload (used to form topography) and suspended load at a …
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Downstream suspended sediment dynamics of reservoir sediment flushing
Reservoir sediment flushing is increasingly considered beneficial to reduce sedimentation of reservoirs and maintain sediment supply downstream of impounded rivers. Nevertheless, flushing of the accumulated sediments downstream of the dam also bears numerous negative impacts. In this study, first …
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Satellite Remote Sensing of Suspended Sediment Concentrations in Turbid Rivers
Suspended sediment concentration (SSC) is a critical parameter in the study of river sediment transport and water quality variation, but traditional measurements of SSC through in-situ sampling in rivers are expensive and time-consuming to perform. Thus, these methods cannot provide continuous SSC …
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Soil erosion and suspended sediment dynamics in intensive agricultural catchments
Excessive delivery of fine sediment from agricultural river catchments to aquatic ecosystems can degrade chemical water quality and ecological habitats. Management of accelerated soil losses and the transmission of sediment-associated agricultural pollutants, such as phosphorus, is required to …
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Predicting suspended sediment in Illinois rivers using dimensionless rating curves
Suspended sediment concentrations in Illinois are a serious concern to the environment and navigability of Illinois rivers, the Mississippi River and the Gulf of Mexico. Therefore, understanding the amount of sediment in a river is important. Measuring the sediment, though, can be a lengthy, …
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The field measurement of suspended sediment in the surf zone
Suspended sediment concentrations were measured in the nearshore environment at the site of the proposed breakwater of the Koeberg Nuclear Power Station. Reference concentrations are evaluated from the field data. Two sampling systems to obtain these concentrations were designed and constructed. …
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Velocity profiles and suspended sediment transport in wave-current flows
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Improving Turbidity-Based Estimates of Suspended Sediment Concentrations and Loads
As the impacts of human activities increase sediment transport by aquatic systems the need to accurately quantify this transport becomes paramount. Turbidity is recognized as an effective tool for monitoring suspended sediments in aquatic systems, and with recent technological advances turbidity …
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Hydroclimatic influences on suspended sediment delivery in a small, High Arctic catchment
A study of suspended sediment transport dynamics was undertaken in the West River at Cape Bounty, Melville Island, Nunavut. Hydrometerological conditions and sediment transport were measured over three seasons in order to characterize suspended sediment transport and grain size characteristics in …
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Atrazine Contamination and Suspended Sediment Transport within Logsdon River, Mammoth Cave, Kentucky
… the potential for karst aquifer contamination by sediment-sorbed pesticides is important for cave conservation efforts in agricultural landscapes. Flow rate, water quality parameters and suspended sediment concentrations were measured in Logsdon River, a ~10km karst conduit within the Turnhole …
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Evaluation of a Permittivity Sensor for Continuous Monitoring of Suspended Sediment Concentration
… the US Environmental Protection Agency (USEPA) sediment is a leading cause of water quality impairment (US EPA, 2002). The annual costs of sediment pollution in North America alone are estimated to range between $20 and $50 billion (Pimentel et al., 1995; Osterkamp et al, 1998, 2004). Due to the …
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Suspended sediment and total phosphorus loadings from small agricultural watersheds in western Illinois
… models to compute continuous records of suspended sediment and total phosphorus concentrations at five watersheds in western Illinois. Due to the small drainage areas of the studied streams, all regression models were developed and applied using a 15-minute time-step. Four methods of …
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Suspended-sediment characteristics in four humid tropical watersheds of contrasting land use, Puerto Rico
A hypothetical model of sediment production, delivery, and transport in the humid-tropics of Puerto Rico was developed through statistical analysis of storm-generated sediment loads and hydrologic characteristics from three time categories: (1) the current storm-generated event, (2) previous …
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Effect of stratification due to suspended sediment on velocity and concentration distribution in turbulent flows
… attempts to account for stratification in sediment-laden flows.
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Climate-induced trends in global riverine water discharge and suspended sediment dynamics in the 21st century
… distribution, altering fluvial processes such as sediment dynamics and riverine water discharge, worldwide. Changes in the magnitude of fluvial water and sediment fluxes can have profound impacts on the functioning and connectivity of earth’s natural systems. This study is focused on isolating the …
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