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 78 for “"water cycle"”.
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An early childhood study of the water cycle
Young children's understanding of the water cycle was investigated. Sixty children were individually interviewed using the "Survey of Understanding of the Water Cycle." The answers were then scored according to a scale of Four Levels of UnderstanDing A t-test and chi-square test were run. Answers …
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The Water Cycle at the Phoenix Landing Site, Mars
The water cycle is critically important to understanding Mars system science, especially interactions between water and surface minerals or possible biological systems. In this thesis, the water cycle is examined at the Mars Phoenix landing site: 68.2N, 125.70W), using data from the Compact …
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The Typological Water-Cycle in The Poetry of Herbert, Vaughan, and Traherne
This dissertation shows that the typological water-cycle--which describes the circuit of the waters of life from Christ to man and back again--is an important pattern of imagery in the poetry of Herbert, Vaughan, and Traherne. As in the case with other devotional poets of the seventeenth-century, …
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Understanding the Role of Vegetation Dynamics and Anthropogenic induced Changes on the Terrestrial Water Cycle
… complex feedback loops that link energy and water cycles. Effectively characterizing these linkages is critical to modeling weather and climate extremes accurately. Seasonal variability in vegetation growth and human-driven land cover changes (LCC) can alter the biophysical properties of the …
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Copper in the Urban Water Cycle: Sources and Sinks, Benefits and Detriments, and Corrosion in Soft Waters
… world-wide regulation of copper in drinking water, wastewater discharge and sludge has prompted utilities to carefully evaluate copper sources and sinks, benefits and detriments, and mitigation. This work compiled the individual efforts of researchers and utilities to provide a basis for …
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Occurrence and Control of Microbial Contaminants of Emerging Concern through the Urban Water Cycle: Molecular Profiling of Opportunistic Pathogens and Antibiotic Resistance
In an era of pervasive water stress caused by population growth, urbanization, drought, and climate change, limiting the dissemination of microbial contaminants of emerging concern (MCECs) is of the utmost importance for the protection of public health. In this dissertation, two important subsets …
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The response of ocean salinity patterns to climate change : implications for circulation
… ocean salinity arise from the exchange of freshwater between the sea surface and the atmosphere. For a quasi-steady state system, these surface fluxes are balanced by compensating transports of salt in the ocean interior. In a warming climate, the atmosphere holds additional water vapor which …
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Creating water sensitive places in Hangberg
… has had a long and intimate relationship with water, the neighbourhood is located around the Hout Bay harbour where the fishing industry provides the main source of employment and residents depend on clean water for their daily needs. This relationship has however been put under strain as urban …
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The response of ocean salinity patterns to climate change: implications for circulation
… ocean salinity arise from the exchange of freshwater between the sea surface and the atmosphere. For a quasi-steady state system, these surface fluxes are balanced by compensating transports of salt in the ocean interior. In a warming climate, the atmosphere holds additional water vapor which …
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Multi-Satellite Remote Sensing of Land-Atmosphere Interactions: Advanced Data-Driven Methodologies for Passive Microwave Retrievals of Flood and Precipitation
… comparable advances in remote sensing of the water cycle. First, this dissertation presents a multi-satellite multi-sensor Bayesian methodology for prognostic detection of two key components in the terrestrial water cycle: (1) the extent of flooded regions at a sub-daily basis, which improves …
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A System Modelling Approach to Assessment of Hybrid Water Supply Solutions in eThekwini Municipality
Water security in South Africa is a major concern, particularly in the context of urbanisation, the concomitant increases in water demand, and the potential for climate change to aggravate water shortages. Provision of basic services remains a significant challenge. Improving economic and social …
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Role of xanthophyll and water-water cycles in the protection of photosynthetic apparatus in Arbutus unedo and Arabidopsis thaliana
… energy dissipation through the xanthophyll cycle that may transform harmlessly the excitation energy into heat and thereby prevent the formation of damaging active oxygen species (AOS). Violaxanthin deepoxidase (VDE) converts violaxanthin (V) to antheraxanthin (A) and zeaxanthin (Z) …
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Calibration of the global hydrological model WGHM with water mass variations from GRACE gravity data
… In particular, GRACE observations of total water storage changes (TWSV) provide a comprehensive data set for analysing the water cycle on large scales. Therefore they are invaluable for validation and calibration of large-scale hydrological models as the WaterGAP Global Hydrology Model …
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Characterization of the spatial and temporal variability in pan-Arctic, terrestrial hydrology
… system, and there are signs that significant water-cycle changes, involving complex feedbacks, have occurred. This dissertation explores the methods to estimate components of the arctic hydrological cycle, the numerous biases and uncertainties associated with the techniques, and suggestions …
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Hydrological modeling of mountain catchments in Central Asia
Water resources from Central Asia’s mountain regions have a high relevance for the water supply of the water scarce lowlands. A good understanding of the water cycle in these mountain regions is therefore needed to develop water management strategies. Hydrological modeling helps to improve our …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… then analyzed associated changes in the regional water balance defined as the difference between precipitation (P) and ET. I finally analyzed the effects of regional climate oscillations on vegetation productivity and the regional water balance.<p> The results show that low temperature constraints …
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Study on Regional Responses of Pan-Arctic Terrestrial Ecosystems to Recent Climate Variability Using Satellite Remote Sensing
… then analyzed associated changes in the regional water balance defined as the difference between precipitation (P) and ET. I finally analyzed the effects of regional climate oscillations on vegetation productivity and the regional water balance.<p> The results show that low temperature constraints …
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Sustainability index for integrated urban water management (IUWM) in southern African cities : case study applications : Greater Hermanus region and Maputo City
The critical situation in the water sector continues to jeopardize developmental principles and undermine strategies for poverty eradication. On the assumption that the failure in service provision can be largely attributed to an inability to holistically address all aspects of urban water …
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Eddy-covariance measurements as a tool for ecological and hydrological studies on the Tibetan Plateau
… deals with various aspects of the carbon and water cycle within ecological and hydrological studies that can be assessed by measurements of turbulent fluxes with the eddy-covariance (EC) method. This includes flux measurements over the most common two vegetation types on the TP, Kobresia …
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Characterization of sorption processes of organic cations onto oxidic surfaces
… can be detected in various stages of the water cycle, there is a need to elucidate the effects and behavior of such substances in the aquatic environment. Despite the fact that numerous studies on the sorption behavior of ionizable organic trace compounds have already been carried out, …
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