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 202 for “"brackish"”.
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Biological invasions in brackish waters
… ecological, economic, social impacts worldwide. Brackish waters are transitional areas subject to invasion by taxa that may subsequently spread into adjacent freshwater and marine systems. The tendency for ports to be situated in brackish estuaries makes them particularly susceptible to …
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Plant-habitat interactions in brackish marshes
… the spatio temporal vegetation dynamics in brackish marshes. Furthermore, a better understanding of how plant-habitat relationships generate patterns in tidal marsh vegetation is vital to maintain ecosystem functions and assess the response of marshes to environmental change as well as the …
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Brackish Groundwater Desalination: A Decision Support Tool
… prior to choosing whether to embark on a brackish groundwater desalination program for their utility. The scholarly literature review indicated five areas of greatest importance for consideration when contemplating a brackish groundwater project. Those topics included power source, source …
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Evaluation of Modern Irrigation Techniques with Brackish Water
… by using drip irrigation simultaneously with brackish irrigation water, some of the water stress due to shortage of fresh water resources can be managed. The objective of the current study was to investigate the influence of geometric design, soil type, irrigation regime and amount, and …
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Treating Brackish Groundwater for Irrigation with Selective Electrodialysis & Nanofiltration
… Cartagena aquifer in southeastern Spain contains brackish groundwater that is considered low quality since it requires treatment prior to economic use. For example, the groundwater contains high concentrations of monovalent ions (Na⁺ and Cl⁻), which are detrimental to crop growth and must be …
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Predicting Plant Zonation in the Salt and Brackish Marshes of Georgia
… types based on salinity levels. Tidal fresh, brackish, and salt marshes occur along a gradient that is maintained by tidal forces pushing inland and freshwater sources pushing towards the ocean. The first objective of this research was to characterize selected edaphic variables for salt and …
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Desalination of brackish groundwater in the United States : minimum energy requirements
… has motivated rising interest in desalinating brackish groundwater to meet fresh water demand. Various organizations in the United States have collected more hydrological and chemical data from the growing number of wells. Yet, only one national assessment of groundwater resource distribution …
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Design of cost-optimized village-scale electrodialysis systems for brackish water desalination
… methods of reducing the cost of electrodialysis brackish water desalination systems, specifically for use in rural India, where 60% of the groundwater is too saline to drink. Convergence of socioeconomic and technical factors led to the insight that photovoltaic (PV) powered electrodialysis (ED) …
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Vegetation-environment relationships in a subalpine wet meadow and a brackish tidal marsh
… of scale were examined and compared between a brackish tidal marsh in the Squamish estuary and asubal pine wet meadow in Garibaldi Park in southwestern British Columbia. Vegetation abundance, soil variables, and ground elevation data were collected from 225, 0.5 X 0.5 m quadrats systematically …
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Review of Membrane-Based Brackish Groundwater Desalination and Pretreatment in the United States
Membrane-based brackish groundwater desalination increases freshwater supply, which is especially significant in arid, land-locked regions. Brackish groundwater is a widely available but underutilized alternative water source in the United States, where the risk of water scarcity is increasing in …
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Temporal variability of fluorescent dissolved organic matter at a brackish, tidal marsh-estuary interface
… situ </em>optical sensor at the interface of the brackish, tidal Kirkpatrick Marsh and Rhode River sub-estuary in Edgewater, Maryland (located on the northwestern shore of the Chesapeake Bay), we were able to continuously monitor fluorescent dissolved organic matter (F<sub>DOM</sub>). Corrections …
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Removal rates of electrolytes commonly found in brackish groundwater by means of electrodialysis reversal desalination
This thesis tested and analyzed the removal rates of six different electrolytes: NaCl, Na2SO4 , MgCl2 , K2SO4 , Ca(NO3 )2, and CaSO4 when using electrodialysis reversal (EDR) desalination. A bench top EDR set-up was designed and built, and this set-up was used to desalinate feed water with initial …
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Computation of pseudosonic logs in shallow fresh/brackish water wells: a test case in Brunswick, Georgia
… where the principal formation fluid is fresh or brackish water. Data from four wells situated in Brunswick, Georgia were used in this study. Conventional focused resistivity logs are sensitive to beds as thin as one foot and can provide detail similar to that seen on sonic logs. Focused …
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Paleontology of brackish-water faunas in two tongues of the Cannonball Formation (Paleocene, Danian), Slope and Golden Valley counties, southwestern North Dakota
… The fauna of the tongues is characteristically brackish, but three species of the L tongue mina sp., ?Haplophragmoides sp. and ?Ostrea sp.) suggest conditions of slightly higher salinity than those in which the U tongue was deposited. The two tongues are interpreted to have been deposited on …
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Geochemical Evidence for Vertical Migration of Deep Formation Fluids through the Baton Rouge -Denham Springs Fault System
<p>Accumulations of brackish groundwater exist across south Louisiana within the shallow, south-dipping Pleistocene to Upper Miocene Baton Rouge Aquifer System (BRAS). This research investigates the source of brackish groundwater through geochemical analysis of representative groundwater samples by …
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