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 303 for “"Water Table"”.
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Effect of water table fluctuations on petroleum contamination distribution
… conducted to study the effects of raising the water table level at different rates on petroleum contamination distribution. The experiments were carried out using a two-dimensional sand tank model. The experimental Light Non Aqueous Phase Liquid (LNAPL) was No. 2 Diesel fuel and the …
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The Study of the Water Table and the Classification of the Overlying Strata
… of North Dakota Campus, indicated that the water table in general is nine to ten feet below the surface and three distinct lithologic units lie above the water table. </p>
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Groundwater levels as affected by swine waste lagoons in high water table soils
… in the region. This area typically has a high water table with sandy loam soils. There has been concern by state officials that these units could possibly cause contamination of groundwater in the surrounding area due to infiltration from the lagoons to the water table. The deep aquifer in this …
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Representation of water table dynamics in a land surface scheme : observations, models, and analyses
A recent regional-scale water balance analysis has indicated that the groundwater storage and groundwater runoff are significant terms in the monthly and annual water balance for areas with a shallow water table. However, most of the current land surface parameterization schemes lack any …
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Patterns of water table dynamics and runoff generation in a watershed with preferential flow networks
… affect the relationships between subsurface water velocity, discharge, water table dynamics, and runoff response. In this thesis, three chapters explore some of these patterns for a hillslope and small watershed in coastal British Columbia. In the first chapter, tracers were applied under …
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Ground penetrating radar characterization of wood piles and the water table in Back Bay, Boston
… are performed to determine the depth to the water table and the tops of wood piles beneath a residential structure at 122 Beacon Street in Back Bay, Boston. The area of Boston known as the Back Bay was once a tidal estuary of the Charles River. During the latter half of the 19th century, the …
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The response of Banksia roots to change in water table level in a Mediterranean-type environment
… need to maintain a functional connection to the water table, and the capacity for roots to respond to changes in the water table is a key aspect of this. If root growth is limited by season, plants may not be able to grow roots to adjust to changes in the water table at a particular time of the …
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The Water Table and Soil Moisture Response Following the Removal of Conifers from an Encroached Meadow
… Meadow) has an effect on soil moisture and groundwater depth such that meadow hydrologic conditions are promoted. This goal will be accomplished by the following objectives: 1) develop a water budget incorporating groundwater depth, soil moisture, and climate measurements to quantify the …
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Reliability analysis of non-linear (p-y) laterally loaded piles embedded in stiff clay below water table
Laterally loaded piles are used in some of the very important structures. Therefore, the economical design of such piling is necessary, in which a proper balance among initial cost, risk of failure, and consequences of
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The Water Table, Soil Moisture and Evapotranspiration Conditions Following the Removal of Conifers from Two Encroached Meadows
… the effect of conifer removal on meadow groundwater. The goal of this study is to determine if the removal of conifers from an encroached meadow has an effect on depth to the groundwater table (WTD) and soil moisture content (SMC), and to investigate the accuracy and potential usefulness of …
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The design and construction of a free surface water table for the investigation of compressible-flow phenomena
… was to design and construct a free surface water table for the investigation of compressible-flow phenomena. Although the design range of operation of the water table was to include all desired analogous Mach numbers between 0.40 and 7.00, the range of operation was limited by the formation …
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Effects of Water Table Depth and Edaphic Characteristics on Plant Diversity in a Southern Mississippi Pitcher Plant Bog
<p>This study examined the effects that water table depth and soil characteristics have on plant species richness and species composition within pitcher plant bogs across seasons. Eight piezometers were installed at random distances to monitor long-term water table depth and pressure fluctuations …
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Influence of grain size of a porous medium on the movement of diesel fuel due to water table fluctuations
… of grain size of a porous medium and residual water saturation on the movement of diesel fuel. Three different grades of sand (#12, #20, and #30 grades with mean grain diameters of 0.178cm, 0.08cm, and 0.056cm respectively) were used in the experiments. A water table was simulated and the sand …
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Modeling of water table profile for a subirrigation system and evaluation of reliability of drainmod for the Lower Fraser Valley
… Valley of British Columbia under different water regimes with DRAINMOD and the results were compared with data obtained from conventional subsurface drainage and subirrigation field experiment at Boundary Bay in the Lower Fraser Valley. Predicted and measured water table depth were compared …
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Assessing the Performance of HSPF When Using the High Water Table Subroutine to Simulate Hydrology in a Low-Gradient Watershed
Modeling ground-water hydrology is critical in low-gradient, high water table watersheds where ground-water is the dominant contribution to streamflow. The Hydrological Simulation Program-FORTRAN (HSPF) model has two different subroutines available to simulate ground water, the traditional …
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Reliability of Serviceability and Strength of Deep Foundations Embedded in (p-y) Sand Below Water Table Subjected to Lateral Cyclic Loading
Piles are used in many engineering applications especially when we have weak soil that cannot support the proposed structure, also when we have a scour issue with the soil (especially in designing foundations for bridges), or when large uplift capacity is needed. In many engineering applications …
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