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 8 of 8 for “"lake model"”.
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Two-Dimensional Lake and Reservoir Modeling: Natural and Plume-Induced Mixing Mechanisms
Lakes and reservoirs exhibit a number of mixing and transport mechanisms. Understanding the transport is crucial to understanding and predicting constituent and density structures. Transport in waterbodies can be natural, such as seiche-induced boundary mixing or advectively-driven inflows. …
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Depositional Environments of Siliceous Laminites in the Laney Member of the Green River Formation, Sublette County, Wyoming
… near-shore, oxygenated saline - alkaline lake environment, as inferred from (1) the association of stromatolites , mud-cracked dolomicrites and ostracodal micrite, (2) fossil occurrences of Knightia (Herring-type fish) and Equisetum (horsetail), Astephus (catfish), Amyzon (sucker ) and (3) …
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The Occurrence of Fish Remains in Modern Lake Systems : A Test of the Stratified-Lake Mode
… environments predicted by the Stratified-lake Model. This research tested that model by searching for fish remains in 38 collected bottom samples of six modern lacustrine analogues, including Fayetteville Green Lake, New York. The bottom sediments of a warm, holomictic, shallow, and saline …
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Lake remediation by top-down and bottom-up management : an ecosystem-scale experiment in the English Lake District
Lake ecosystems face a variety of pressures arising from catchment-based anthropogenic activities and long-term changes in background environmental conditions, which greatly threaten their structure, function and the sustainable provision of essential ecosystem services. The response of lakes to …
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Predicting induced sediment oxygen flux in oxygenated lakes and reservoirs
… effects on water quality in thermally stratified lakes and reservoirs. Following installation, increases in sediment oxygen flux (JO2) are typically observed during oxygenation and are positively correlated with the bubble plume gas flow rate. Studies show that JO2 is controlled by the thickness …
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Modelling temporal dynamics of discharge and nutrient loading from a mixed land use catchment, and interactions with a eutrophic, temperate lake under climate change
… nutrient export from terrestrial systems to lakes, where they may lead to eutrophication. Impacts of excess nutrients may be exacerbated by a warming climate. A variety of catchment models has been developed to gain insight into the temporal and spatial variations in discharge, and suspended …
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Restoring freshwater quality: an integrated environmental, economic and ecosystem services assessment of reducing nutrient loads to Lake Rotorua
… actions to reverse the decline. Restoration of lakes is impacted by complex relationships of ecosystem responses to management actions, economic constraints, societal pressures and policy contexts. Research in this thesis was aimed at an integrated assessment covering these aspects to inform …