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 17 of 17 for “"groundwater depletion"”.
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Multi-agent system for future groundwater depletion scenarios using game theory
Groundwater is one of the most vital of all common pool resources throughout the world. More than half of groundwater is used to grow crops. This research models groundwater depletion patterns within a multi-agent system framework. Irrigators are modeled as agents in the multi-agent system. The …
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Groundwater depletion embodied in transfers and exports of the United States
… products all over the world. Irrigation from groundwater resources is increasingly important in agricultural production in the US. Groundwater withdrawals for irrigation have nearly tripled since records began in 1950, even accounting for recent water use efficiency gains. Increased reliance …
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Water balance investigations of groundwater depletion in Asia : information needs and uncertainty analysis
… regions of the world, and Asia in particular, groundwater is a major source of irrigation water. Over-pumping of groundwater aquifers has depleted storage in some areas. Quantification of the degree to which groundwater is being used unsustainably is critical to our understanding of the …
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Assessing long-term conservation of groundwater resources in the Ogallala Aquifer Region using hydro-agronomic modeling
Groundwater is vital for domestic use, municipalities, agricultural irrigation, industrial processes, etc. Over the past century, excessive groundwater depletion has occurred globally and regionally, notably in arid and semi-arid regions, often due to providing irrigation water for crop …
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Irrigation Practice Adoption: Causes and Consequences in the Arkansas Delta
<p>Concerns about groundwater depletion from conventional irrigation agriculture in the Arkansas Delta region have led to the promotion of more efficient irrigation practices. With Arkansas being the largest producer of rice, the 10th largest producer of soybeans and the 16th largest producer of …
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Artificial Recharge of Groundwater with Recycled Municipal Wastewater in the Pajaro Valley
… most productive agricultural region. Groundwater is the main source of water for the region, and due to high agricultural demand, the Pajaro Valley is facing groundwater depletion and rapid seawater intrusion. Artificial recharge of recycled water into groundwater aquifers in other …
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A GIS Approach to Modeling Groundwater Levels in the Mississippi River Valley Alluvial Aquifer
<p>Groundwater depletion, a subject of growing concern for a significant portion of Arkansas, may lead to future economic challenges for the Arkansas Delta region. The Mississippi River Valley Alluvial Aquifer is the uppermost aquifer and features the largest groundwater capacity in the Mississippi …
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Behavioral responses and policy evaluation: Revisiting water and fuel policies
… environment. I focus on policies affecting water depletion, water pollution, and fuel consumption. I assess their cost-effectiveness by modeling and quantifying the behavioral responses of farmers and households.</p> <p>My first essay focuses on decreasing groundwater depletion through increasing …
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Human mediated physical and virtual water transfers of the United States: Who uses the water?
… water use decisions can lead to water scarcity, groundwater depletion, or other environmental impacts, but, with better understanding, can provide an opportunity for innovative and sustainable solutions to local water issues. The primary goal of this dissertation is to better understand the …
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Fluid and Pressure Dynamics in Natural and Engineered Coastal Aquifer Systems
Coastal aquifers are increasingly impacted by groundwater depletion, seawater intrusion, and land subsidence driven by long-term pumping. This dissertation uses 3D numerical modeling to evaluate how variable-density flow and geological heterogeneity influence pressure response, intrusion geometry, …
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Sustainable agricultural management : a systems approach for examining food security tradeoffs
… that limit cropland expansion and prevent groundwater depletion. We apply the framework in India's Krishna river basin and find that reallocating resources to meet or exceed current production can lead to 96% gain in net revenue as resources over an estimated current baseline. Resources in …
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Improving Water Security with Innovation and Transition in Water Infrastructure: From Emergence to Stabilization of Rainwater Harvesting in the U.S.
… is facing significant problems of scarcity, groundwater depletion, high energy consumption and needs a trillion dollars investment in repairs, replacement, and expansion. Furthermore, due to increased urban/suburban development, runoff (stormwater) pollutes our waterways and is causing …
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Determination of irrigation water quality of surface and groundwater in Luvuvhu catchment in Limpopo, South Africa
… activities constitute significant threat to groundwater depletion. This study emphasized on the surface water quality and groundwater quality for irrigation purpose by adopting multivariate statistical methods and the hydrochemical processes and on the probable groundwater contamination in …
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Three essays on the economics of water management in agriculture
… dissertation is on agricultural systems that use groundwater as a source of irrigation. The first essay is an empirical study of the role of trading ratios and search frictions in a groundwater market with spatial externalities. Econometric results suggest that the use of trading ratios can indeed …
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Quantifying The Linkages Between US' Water Resources And Its Production Of Food, Energy, And Water
… how do socio-economic forces shape localized groundwater depletion and surface water scarcity within the United States at the field and basin scale? Specifically, I tested whether irrigated farm size leads to reduction in groundwater application per unit area and whether an increase in the …
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Modeling the Food-Water Nexus: A Spatio-temporal Accounting of Agricultural Land and Water Use in the United States
… critical system faces growing pressures from groundwater depletion, climate change, and competing demands for water across sectors. Addressing these challenges requires an integrated understanding of how croplands and water use have evolved through time, and how more efficient management can …
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Base Flow Recession Analysis for Streamflow and Spring Flow
… streams dominate the flowing streams and groundwater hydraulics governs the recession behavior. The ephemeral stream densities vary from arid regions to humid regions. Therefore, the characteristics of transition flow across the climate gradients are also tested in 40 watersheds. It is …