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 “"Celtic Sea"”.
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Nutrient fluxes into the seasonal thermocline of the Celtic Sea
… a variety of hydrological<br/>regimes over the Celtic Sea in 2003 and 2005. Over a topographically flat shelf<br/>JN varied with the spring-neap tidal cycle (1.1 (neap) – 2.8 (spring) mmol m-2<br/>day-1), driven by changes in barotropic shear generated vertical diffusivities (Kz)<br/>at the base …
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A seismic study on the structural evolution of the North Celtic Sea Basin, offshore Ireland
The North Celtic Sea Basin (NCSB) is one of a number of basins related to regional Mesozoic extension across north-west Europe. Previous authors have described the NCSB as having a conventional “steer’s head” geometry or alternatively a half graben geometry. Modern 2D and 3D seismic data has now …
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Pretty good governance: balancing policy drivers and stakeholder interests in developing fisheries ecosystem plans
The central research question that this thesis addresses is whether there is a significant gap between fishery stakeholder values and the principles and policy goals implicit in an Ecosystem Approach to Fisheries Management (EAFM). The implications of such a gap for fisheries governance are …
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The photophysiology and primary productivity of phytoplankton within the deep chlorophyll maximum
In temperate shelf seas, a deep chlorophyll maximum (DCM) persists within the thermocline during summer stratification. This study explores the significance of primary production (PP) within the DCM and provides a detailed investigation into the mechanisms of phytoplankton adaptation to this …
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The seasonal cycling and physico-chemical speciation of iron on the Celtic and Hebridean shelf seas
Shelf seas represent an important source of iron (Fe) to the open ocean. Additionally, shelf seas are highly productive environments which contribute to atmospheric carbon dioxide drawdown and support large fisheries. The work presented in this thesis describes the seasonal cycle of Fe in the …
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The role of colloidal material in the fate and cycling of trace metals in estuarine and coastal waters
… River Beaulieu, the Trent-Humber system and the Celtic Sea. Colloidal and truly dissolved (<10,000 molecular weight) fractions were separated by cross-flow filtration (CFF). Filtration artefacts (conventional and CFF) involving filter blockage and colloid aggregation/disaggregation …
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Implementation of a method to determine sub-nanomolar concentrations of iron in seawater and its application to the study of marine iron biogeochemistry at the ocean-shelf interface
… technique to measure dissolved iron in seawater. The setting up of a flow-injection analyser with chemiluminescence detection (FIACL) for Fe(II) proved to be non-trivial. Extensive work was undertaken to solve problems relating to our limited level of understanding of the CL reaction, …
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Population structure of Atlantic herring, Clupea harengus L., in the northeast Atlantic using phenotypic and molecular approaches
… identification. Samples were collected from the Celtic Sea, North Sea and fjords, Baltic Sea, Norwegian Sea, Barents Sea, and Pacific Ocean (pacific herring, Clupea pallasi L.).The Truss morphometric method was very sensitive in detecting morphological differences, revealing significant …
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THE DETERMINATION OF COPPER IN SEA WATER USING FLOW INJECTION WITH CHEMILUMINESCENCE DETECTION
… Cu(II) and total copper (by UV irradiation) in seawater. The operational parameters of the FI manifold in a UHP water sample matrix and the 1,10-phenanthroline CL reaction were rigorously optimised. Interferences to the CL reaction were investigated and the good analytical figures of merit …
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A study of the dissolution of atmospherically derived trace metals into North Atlantic seawater
… of a suite of trace metals from aerosols into seawater from wet and dry deposition, with a focus on important trace metals: manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu) and lead (Pb). To this end, aerosol and rainwater samples were collected from Tudor Hill (Bermuda) and …