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 12 of 12 for “"concentration-discharge"”.
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Identifying nitrate transport mechanisms and export dynamics using water age modeling and concentration-discharge relationships
… collected 16 months of high-resolution NO3- and discharge data from August 2022 to November 2023. An ISCO Automatic Sampler located at the UER outlook collected daily river water samples from April 2022 to November 2023, which were measured for water isotopes alongside weekly precipitation …
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Quantifying factors that influence road deicer retention and export in a multi-landuse Upstate New York watershed
… on seasonal and multi-year scales. Chloride concentration changes were then modelled under varying pollutant loading scenarios through an integrated catchment model (INCA-Cl).</p> <p>Six in-stream conductivity/stage/temperature sondes, recording at 15-minute intervals, were installed within …
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Prediction of sedimentation and bank erosion due to the construction of Kahang Dam
… improve the (i) prediction of suspended sediment concentration, (ii) monitoring riverbank erosion, and (iii) development of Riverbank Erosion Index (RbEI) for downstream Kahang Dam. This research used the Artificial Neural Network (ANN) and ANN with Autoregressive (AR) (NNETAR) in predicting …
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The Flow Regime of Function: Influence of flow changes on biogeochemical processes in streams
… and metabolism using segmented metabolism- and concentration- discharge analyses. I found that GPP declined at varying rates across discharge, and ER decreased at lower flows but became constant at higher flows. Net ecosystem production (NEP; = GPP - ER) reflected the divergence of GPP and ER …
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Land Cover Influences on Stream Nitrogen Dynamics During Storms
… cover influences were addressed through nitrogen concentration/discharge patterns, nitrogen concentration relationship to land cover, and comparison of storm and base flow nitrogen concentrations over time. Weekly base flow samples and samples from six storm were collected in 2010-2011. Total …
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Water Quality and Groundwater Discharge in the Halton Region
… and its application for identifying groundwater discharge on a watershed-to-site-specific scale. In the second chapter of this thesis, field data from 2022 revealed significant variations in major and trace solute concentrations, not only between and within catchments but also over time and …
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Multi-scale evaluation of groundwater flow and metal sourcing to streams in the Bonita Peak mining district
… 3) the solute budget of streams is controlled by discharge and metal fluxes from multiple distinctive groundwater systems with unique geochemical compositions and timescales of response to climatic perturbations. These results illustrate that groundwater flow, groundwater/surface-water …
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Extracting value from patterns in routinely collected, high-frequency water quality data in rivers supplying drinking water treatment works
Patterns in concentration-discharge (c-q) relationships in rivers can be used to describe the complex interactions and combined effects of catchment processes affecting sources, mobilisation, and the transport of contaminants. Long-term monitoring, routine sampling, and targeted storm sampling have …
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Extracting value from patterns in routinely collected, high-frequency water quality data in rivers supplying drinking water treatment works
Patterns in concentration-discharge (c-q) relationships in rivers can be used to describe the complex interactions and combined effects of catchment processes affecting sources, mobilisation, and the transport of contaminants. Long-term monitoring, routine sampling, and targeted storm sampling have …
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Physical and Biological Drivers of Wetlandscape Biogeochemistry
… on surface water dissolved organic matter concentrations (Chapter 4). Animal waste can contribute substantially to nutrient cycling and ecosystem productivity, yet little is known of the biogeochemical impact of animal excretion in wetland habitats. A common and abundant amphibian in …
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Characterization of legacy soil P and quantification of subsurface losses under artificial drainage
… a history of soil health practices, and 3) use concentration-discharge (C-Q) relationships, hydrograph separation, and the seasonal origin index (SOI) to identify pathways of subsurface P loss in a ditch-drained field. ☐ Chapters 2 and 3 focused on characterizing the sources and solubility of …
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Tailoring Fluoride/Fluorine Bond Activity for High-Energy Li and Li-ion Batteries
… properties on lithium fluoride (LiF, one of the discharge products) nucleation and growth was demonstrated. The electrode passivation induced by LiF is mitigated via increasing the fluoride solvation strength of the solvents, resulting in improved Li−SF₆ cell rate capabilities. Strategies to tune …