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 14 of 14 for “"Subsurface temperature"”.
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Sea surface and related subsurface temperature anomalies at several positions in the Northeast Pacific Ocean.
Sea surface temperature (SST) anomalies from previous sources have been relation to subsurface temperature anomalies from BT's at six positions in the Northeast Pacific. In this manner some understanding of the value of SST anomalies as indicators of ocean energy states is achieved. Results show …
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Biological structure of an Agulhas Bank subtidal reef community and consumption estimation for a dominant species
… structure, as well as Porifera respiration, the subsurface temperature regime above the subtidal reef and the amount of organic matter available for utilization are examined.
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Simulation of variability in the tropical Western Indian Ocean
… the interannual variability of the sea surface temperature (SST) in the Tanzanian shelf region, and compares it with that offshore or with subsurface temperature. At the annual cycle, the westward-flowing NEMC advects relatively warm and fresh waters from the north of Madagascar towards the …
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The Effect of Geothermal Heat Pumps on Subsurface Flow and Contaminant Transport
… their geo-environmental effects within the subsurface. This research uses FEFLOW software, to simulate heat and mass transport for a vertical closed-loop GSHP system. Steady and transient flow and heat transport results for a multiple borehole system are presented which indicate long-term …
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Thermal analysis of sliding contact systems using the boundary element method
… of frictional heat and the ensuing surface or subsurface temperature rise caused by frictional heating between sliding solids. The theoretical model consists of two semi-infinite substrates each coated with a film of arbitrary thickness and thermal properties. A three dimensional transient …
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Estimating the spatial and temporal variability of primary production from a combination of in situ and remote sensing data a southern Benguela case study
… an archive of in situ ship-board data containing subsurface temperature and phytoplankton distribution profiles. Each profile is associated in time and space with satellite remotely-sensed wind, sea surface temperature and surface chlorophyll a data. The bottom depth, season and location of each …
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Detail of the thermal structure of oceanic fronts in the Southern ocean south of Africa
… has a standard deviation of 53 km, and the mean subsurface width of 37 km has a standard deviation of 33 km. The Agulhas Front. has been found to be a separate front north of the Subtropical Convergence in 56 % of the cruises investigated. It has only been observed from 18,2°E to 24,7°E, with a …
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The Marginal Ice Zone (MIZ) seawater property dynamics of the Southern Ocean below Southern Africa using animal-borne observations
… to analyse properties such as salinity and temperature within the MIZ. These properties may then be related to observations of sea ice concentration obtained by remote sensing to qualitatively describe their relationships. This work provides an example of how data from selected seal …
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Thermal history model of the Williston Basin
<p> The factors that affect the subsurface temperature of a sedimentary basin were investigated by empirical and analytical methods. A review of thermal-mechanical models suggests that the Williston Basin was formed by more than one mechanism. The Williston Basin may have been initiated by a …
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Physics-guided Machine Learning Approaches for Applications in Geothermal Energy Prediction
… have used physics-based models and bottom-hole temperature measurements from oil and gas wells to generate heat flow and temperature-at-depth maps. Given the uncertainties and simplifying assumptions associated with the current state of physics-based models used in this field, this thesis …
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Investigation of temperature effects on subsurface attenuation of nitroaromatic compounds
… State University has shown that maintaining soil temperatures ~5°C above natural site conditions substantially increases rates of anaerobic petroleum hydrocarbon degradation. The overarching goal of this research is to determine whether thermal enhancement might increase attenuation rates of NACs …
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Solubilization of volatile organic compounds in edible nonionic surfactants
Volatile Organic Compounds (VOCs) are major subsurface contaminants and exist as Non-Aqueous Phase Liquids (NAPLs) in the subsurface. Pump-and-treat remediation is the most common technology used to remediate contaminated groundwater. However, experience has revealed that the traditional …
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Elevated temperatures in waste containment facilities
… A number of factors can lead to elevated temperatures and thus present a hazard to the public health and safety. For instance, MSW landfills can produce obnoxious odors, toxic gases, and aggressive leachates. In addition, they can damage gas extraction, leachate collection, interim cover, …
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The geothermal potential of Luxembourg
… Rotliegend-Senke. The lack of deep boreholes and subsurface temperature prognosis at depth is circumnavigated by using thermal modelling for inferring the geothermal resource at depth. For this approach, profound structural, geological and petrophysical input data are required. Conceptual …