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 18 of 18 for “"Soil Infiltration"”.
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EVALUATION OF BEDROCK DEPTH AND SOIL INFILTRATION ALONG PENNYPACK CREEK USING ELECTRICAL RESISTIVITY TOMOGRAPHY AND MOISTURE LOGGERS
… by increasing stormwater runoff, decreasing infiltration, and reducing vegetation cover and evapotranspiration. Modeling hydrologic systems here is especially difficult due to the increased impervious land cover, which makes predicting processes such as urban streamflow and flooding …
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Creating A Stormwater Runoff Model For The City Of Oxford, Mississippi: When It Rains, Where Does That Water Go?
… model uses data collected from rain gauges, soil data from ssurgo and published soil infiltration rates from a Lafayette County soil survey, impervious cover created from Lidar and Aerial Photography, published evapotranspiration rates, and storm drain locations provided by the city of oxford …
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Trees and Structural Soil as a Stormwater Management System in Urban Settings
… urban spaces. We propose a system of structural soil and trees that can be incorporated beneath pavement. Structural soil has a high load-bearing capacity yet is engineered to support tree root growth. Stormwater is directed into a structural soil reservoir below the pavement where tree roots can …
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Parameter estimation of urban drainage models
… studies and found to be satisfactory. The soil infiltration parameters, which represent a sub-set of pervious area parameters, were determined through soil infiitrometer tests, which were conducted at several sites in the study catchment, which was used for model calibration. Soil …
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Development of a sustainable water management strategy in the Alwahat area of Libya
… oil operations, increased salinity in water soil infiltration, and crop fertilization which is established by reliable sources; however no contemporary quantitative or qualitative monitoring data is available.
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Post-fire Response of Little Creek Watershed: Evaluation of Change in Sediment Production and Suspended Sediment Transport
… simulations, hillslope erosion plots, and soil infiltration tests indicated that fire produced soil water repellency, the lack of ground cover, steep slopes, and high soil burn severity were the most influential factors contributing to hillslope erosion. Contrary to results reported in …
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Evaluating Five Years of Soil Hydrologic Response Following the 2009 Lockheed Fire in the Coastal Santa Cruz Mountains of California
… for studying the hydrologic response of burned soils in the Santa Cruz Mountains where there is insufficient post-fire studies regarding fire-effects on watershed processes such as infiltration and near-surface runoff. Soil infiltration and soil water repellency were evaluated with rainfall …
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Comparative effects of conservation tillage systems on selected soil properties and yields of groundnut(arachis hypogaea)
… in Zambia based on reported improvements in soil infiltration, moisture, soil carbon, microbial activity and reduced bulk density over time. However, the effects in groundnuts such as plant development, agronomic aspects such as biological nitrogen fixation and yields under conservation …
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Comparative effects of conservation tillage systems on selected soil properties and yields of groundnut(arachis hypogaea)
… in Zambia based on reported improvements in soil infiltration, moisture, soil carbon, microbial activity and reduced bulk density over time. However, the effects in groundnuts such as plant development, agronomic aspects such as biological nitrogen fixation and yields under conservation …
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Wastewater renovation with soil depth as influenced by additional treatment of septic tank effluent
Many soils are marginally suited for installation of on-site wastewater disposal systems. With soil limitations, additional wastewater treatment prior to soil application may allow for a reduction in soil depth. Undisturbed 20-cm-diameter soil columns (fine loamy, mixed, mesic Typic Hapludult), in …
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Symmetry methods applied to Richard's equations and problems of infiltration
… exploited intensively. Hence, knowledge of the infiltration process is a requirement for understanding water management.<br/><br/>The main aim here is to solve the one-dimensional nonlinear time-dependent Richard's equation for water flow in an unsaturated uniform soil. The main theory of soil …
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Development of a Hydrologic Model for an Urban Headwater Stream: The Influence of Pervious Surface Properties on Runoff Dynamics
… waterway (i.e. drainage area, slope, etc.), infiltration potential of soil map units, LULC, and percent ISA. These datasets were analyzed to provide input parameters and develop a Storm Water Management Model (SWMM) for the MC catchment. To more accurately characterize the infiltration …
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The Biological Control of Spotted Knapweed in the Southeastern United States
… negatively impacting native plants, increasing soil surface runoff and stream sediment yields, and reducing soil infiltration. A biological control program for spotted knapweed using <em>Larinus minutus</em> (Coleoptera: Curculionidae), was initiated in Arkansas in 2008. In this dissertation I …
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Livestock impact assessment and restoration strategies in the semi-arid Karoo
… One hypothesis is that small-scale changes in soil physical and chemical properties are responsible for the fine-scale patterning evident in winter-rainfall Succulent karoo ecosystems. Alternatively, these patterns could be the result of area-selective grazing by livestock. To evaluate these …
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Laboratory Test Program of Rotary Plate Sprinklers
… in high application rates that could exceed the infiltration capacity of the soil and result in runoff. In 1988, Nelson Manufacturing introduced their ROTATORTM and SPINNERTM series low pressure sprinkler heads that had larger application areas than other reduced pressure sprinkler designs as …
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Groundwater quantity and quality assessment for aquifer recharge in Ohangwena region, Namibia
… cover, lineaments, drainage, slope, geology, and soil type. The results of the assessment indicated that 85% of the Ohangwena region is characterized by high groundwater recharge zones, while 25% is characterized by very high groundwater recharge zones. The very high groundwater recharge zones are …
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Modelling of urban stormwater drainage systems using ILSAX
… parameters include loss model parameters (i.e. infiltration and depression storage parameters) and other parameters related to the catchment (such as percent imperviousness, soil cover and conveyance system parameters). Some of these parameters can be estimated from available maps and drawings …
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Measurement and Simulation of Preferential Flow in Frozen Soils
The infiltrability of frozen soils strongly influences the partitioning of snowmelt and hydrological functioning of cold regions. Preferential flow in macropores may enhance infiltration into frozen soil, but flow dynamics are complicated by coupled water and heat transfer processes. Field studies …