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 168 for “"Thermocline"”.
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Time-dependent ventilated thermocline
… study the time-varying behavior of a ventila ted thermocline with basin scales at annual and decadal time scales. The variability is forced by three external forcings: the wind stress (chapter 3), the surface heat flux (chapter 4) and the upwelling along the eastern boundary (chapter 5). It is …
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Time-dependent ventilated thermocline
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1992.
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The thermocline and current structure in subtropical/subpolar basins
… of this thesis discusses the structure of the thermocline and the current pattern within a two-layer model. The corresponding flow field is explored as the amount of water in the upper layer is gradually reduced (or as the wind stress is gradually increased). In the model, when the amount of …
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Thermocline Circulation Driven at Surface Outcrops of Isopycnal Surfaces
… used as a dynamical tracer to study the interior thermocline circulation. Using the generalized flux form of PV equation (Haynes and McIntyre, 1987), wind stress and buoyancy fluxes at surface outcrops of isopycnal surface are translated into PV fluxes. The PV flux condition so derived considers …
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The thermocline and current structure in subtropical/subpolar basins
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric and Planetary Sciences, 1984.
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Nutrient fluxes into the seasonal thermocline of the Celtic Sea
… diffusivities (Kz)<br/>at the base of the thermocline. Further increases in nitrate fluxes were possible<br/>through small shear perturbations. JN is further enhanced over topographic<br/>features, such as banks on the shelf or the shelf break, by the generation and<br/>dissipation of lee …
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Multiscale Simulation of Thermocline Energy Storage for Concentrating Solar Power
… from intermittent solar collection. Dual-media thermocline tanks, composed of molten salt and solid rock filler, offer low-cost storage capability but the concept has experienced limited deployment in CSP plants due to unresolved concerns about long-term thermal and structural stability. The …
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Shear of small vertical scale observed in the permanent oceanic thermocline
Two shear experiments performed in the permanent thermocline are described and analyzed in this thesis. The first employed dye streak techniques to gain fractional meter vertical resolution. Shears with small vertical scales with frequent reversals in direction and changes of magnitude were …
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Instability Waves in the Gulf Stream Front and Its Thermocline Layer
… an attempt to elucidate the interaction of the thermocline layer with surface slopewater shoreward of the front. The basic state is geostrophic balance and constant potential vorticity in the two active layers, but the perturbations are ageostrophic. The flow is found to be unstable to long wave …
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Shear of small vertical scale observed in the permanent oceanic thermocline.
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1971.
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Performance and Cost Analysis of a Structured Concrete Thermocline Thermal Energy Storage System
… the performance of the plants. A single-tank thermocline TES system, requiring a reduced liquid media volume, has been suggested as a cost-reducing alternative. Unfortunately, the packed-aggregate bed of such TES system introduces the issue of thermal ratcheting and rupture of the tank's …
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Temporal evolution of tritium-³He age in the North Atlantic : implications for thermocline ventilation
… mechanisms that ventilate the subtropical thermocline of the eastern North Atlantic. The starting point is an analysis of the existent historical database of natural and anthropogenic tracers, with special emphasis on 3He and tritium, that can be used to infer rates of ventilation. If the …
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Investigating the biogeochemistry of the Mozambique Channel thermocline using an optimum multiparameter analysis approach
The ocean's thermocline represents the transition zone between the surface and deep ocean. Its formation is linked to vertical and horizontal diffusion, and it constitutes part of the ocean's wind driven circulation, playing a critical role in the lateral advection and vertical supply of nutrients. …
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Temporal evolution of tritium-³e age in the North Atlantic : implications for thermocline ventilation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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The Effects of Vertical Diel Thermocline Movement on the Settling of Marine Snow in a River Influenced Marine Environment
… model CTD and were analyzed for variations in thermocline depth. To focus on daily variations, the first 30 meters of the water column were studied at two-meter depth intervals. The 2019 data were collected within a distinct plume of fresh water from the Mississippi (MS) River whereas the 2018 …
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Links between the Seychelles-Chagos thermocline ridge and large scale climate modes and primary productivity; and the annual cycle of chlorophyll-a
The Seychelles-Chagos Thermocline Ridge (SCTR) is a region of upwelling present at 55°E- 90°E and 5°S-12°S in the southwest tropical Indian Ocean. It is a region of strong ocean-atmosphere interactions due to the high variability of the thermocline depth caused by the local Ekman pumping. …
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The modern and glacial thermoclines along the Bahama Banks
… of the global carbon cycle, changes in the thermocline must be accounted for if we are to understand the processes involved in Quaternary climatic fluctuation. Toward this goal, this thesis contains studies of the modern and glacial thermoclines at the Bahama Banks and it presents an novel …
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The photophysiology and primary productivity of phytoplankton within the deep chlorophyll maximum
… 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 tidally dynamic and dimly-lit …
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Physiological and Behavioral Aspects of Thermoregulation in Diarrheic Piglets
… preference of diarrheic piglets exposed to a thermocline apparatus for 60 minutes. Diarrheic piglets on average preferred a lower ambient temperature than did control piglets. Furthermore, preference for a lower temperature in the thermocline was demonstrated in 48-hour-old piglets than in …
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Soft sediment ecology of Lough Hyne Marine Reserve - spatial and temporal patterns
… on benthic fauna due to a natural seasonal thermocline were studied in the deep Western Trough, using camera-equipped remotely-operated vehicle to follow transects, on a three-monthly basis over one year. In late summer, the area below the thermocline of the Western Trough was devoid of …
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