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 10 of 10 for “"Sediment model"”.
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Modeling the fate and transport of nitrogen and sediment within coastal embayments on St. John, U.S. Virgin Islands
… As a result, a number of pollutants, including sediment and nitrogen, are being delivered to the coastal waters around the island at increasing rates and are believed to be having adverse impacts on the health of coral reef ecosystems. Understanding the impacts of increased sediment and nitrogen …
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The impact of land reclamation on tidal dynamics and suspended-sediment dynamics in Jiaozhou Bay, Qingdao, China
… 2) the impact of land reclamation on suspended-sediment dynamics; 3) the impact of wave-current interaction on suspended-sediment dynamics. Over the past few decades, there has been large-scale land reclamation in Jiaozhou Bay, which inevitably has affected the hydrodynamics and sediment …
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Observations and modeling of wave-acceleration-induced sediment transport in the surfzone
Onshore sediment transport and sandbar migration are important to the morphological evolution of beaches, but are not understood well. Here, a new model that accounts for accelerations of wave-orbital velocities predicts onshore sandbar migration observed on an ocean beach. In both the observations …
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Observations and modeling of wave-acceleration-induced sediment transport in the surfzone
Onshore sediment transport and sandbar migration are important to the morphological evolution of beaches, but are not understood well. Here, a new model that accounts for accelerations of wave-orbital velocities predicts onshore sandbar migration observed on an ocean beach. In both the observations …
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Three-Dimensional Numerical Modeling Of Multiple-Sized Sediment Transport Modeling Under Current And Waves
In this study, a three-dimensional numerical model of multiple-sized sediment transport under current and waves is developed. The coastal circulations are described by a three-dimensional hydrodynamic model, which is governed by the three-dimensional phase-averaged shallow water flow equations …
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Understanding of pesticides in waters and soils using a novel in situ dynamic sampling technique
… trace organic contaminant studies in soils and sediments, but so far work research on this line has been very limited. DGT was therefore investigated for in situ measurement of atrazine (ATR) and its 5 metabolites in soils, and compared with other two approaches to predict bioavailability to …
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Water quality modeling for the Kennet and Avon Canal, a navigational canal in an inland catchment
… water quality problems caused by inorganic sediment and algae. These water quality problems are affecting the angling sport of fishermen downstream of the confluence of the canal with the River Kennet. The Environment Agency has been called upon to remedy these issues, but before proceeding …
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Estimating Sediment Losses Generated from Highway Cut and Fill Slopes in the Lake Tahoe Basin
… the last 50 years, partially as a result of fine sediment particle (FSP, < 16 micrometers in diameter) contributions from urban stormwater. Of these urban sources, highway cut and fill slopes often generate large amounts of sediment due to their steep, highly-disturbed nature. Therefore, …
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Analysis of sediment dynamics in intensively managed landscapes
The flux of fine sediment within agricultural watersheds is an important factor determining the environmental quality of streams and rivers. Human activity has significantly altered the hydrological and biogeochemical cycles within terrestrial and aquatic environments through agricultural …
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Large-scale floodplain sediment dynamics in the Mekong Delta : present state and future prospects
… one of the world’s most productive fisheries. Sediment dynamics play a major role for the high productivity of agriculture and fishery in the delta. However, the MD is threatened by climate change, sea level rise and unsustainable development activities in the Mekong Basin. But despite its …