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.
Results
Showing 1 to 20 of 103 for “"Hydraulic properties"”.
-
Hydraulic properties of asphalt concrete
… common to soil analysis, to characterize the hydraulic properties of asphalt concrete. Wetting and drying water characteristic curves were measured for six asphalt concrete cores. From the water characteristic curves, it is proposed that asphalt concrete may require bi-modal sigmoid curves to …
-
Characterization of surface soil hydraulic properties in sloping landscapes
Saturated and near-saturated surface soil hydraulic properties influence the partition of rainfall and snowmelt into infiltration and runoff. The goal of this study was to characterize near-saturated surface soil hydraulic properties and water-conducting porosity in sloping landscapes. The specific …
-
Hydraulic Properties Of Aggregated Oil Sand Material From The Athabasca Deposit
… techniques, the effects of salvage depth on the hydraulic properties of AOSM were also examined. A correlation exists between AOSM salvage depth and extent of weathering, where near-surface deposits contain fewer petroleum hydrocarbons (PHC)s than at depth. This relationship confirms onion-skin …
-
Hydrologic behaviour and hydraulic properties of a patterned fen in Saskatchewan
… renewed hydrological research from 2002 to 2004. Hydraulic conductivity, transmissivity, and storativity were determined through use of a surface loading test, pumping tests, and an enclosed field drainage test. None of these field tests have been previously described in the literature as having …
-
Characterizing the physical and hydraulic properties of pine bark soilless substrates
… media on processes such as infiltration, hydraulic conductivity, and gas diffusivity are also not well understood. The characterization of these effects is important for the overall improvement of container crop production. This thesis presents three studies that aimed to characterize the …
-
Evaluation of Strength and Hydraulic Properties of Buried Pipe Systems Used for Stormwater Harvesting
… on evaluating specific pipe systems based on properties selected by the user. Input variables such as system dimensions, soil type and reuse water demand provided flexibility to the user while evaluating the system. Results of the study showed that the PIPE-R Model might be an effective tool …
-
Hydraulic properties of subglacial sediment determined from the mechanical response of water-filled boreholes
The hydraulic properties of basal sediments must be known if the surge mechanism of soft-bedded glaciers is to be understood. Freezing of water-filled boreholes drives water into the subglacial bed and the associated pressure effects give information about subglacial hydraulic properties. A …
-
Range of and relationships between physical and hydraulic properties of commonly available denitrifying bioreactor woodchips
Saturated hydraulic conductivity (Ksat), porosity, and particle size are key physical parameters of woodchip media for denitrifying bioreactor design. Current design guidelines can be improved by analyzing more woodchip types and the effects of overburden on woodchip properties. The objectives of …
-
The Influence of Trees on Soil Hydraulic Properties : Species Effects and the Provision of Ecosystem Services.
… services through their influence on soil properties and functions, including water purification and regulation. Forest soils tend to have a higher saturated hydraulic conductivity (Ks) than soils under other vegetation, so the establishment of streamside tree buffer zones and strategically …
-
Optimisation of pedotransfer function models for soil hydraulic properties using an artificial neural network ensemble method
Soil hydraulic properties are very time-consuming and expensive to measure directly. Conversely, routinely collected soil survey parameters (e.g. soil texture, dry bulk density and organic matter content) are relatively cheap and easy to collect. Fortunately, mathematical regression models called …
-
Electromagnetic, thermal, hydraulic and mechanical characterization of frozen soils having different initial thermal and hydraulic properties
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
-
Spatial variability of hydraulic properties as affected by physical properties of selected soil types in South Africa
Soil hydraulic and hydraulic-related physical properties are key to soil productivity and these properties are widely studied. Nevertheless, their spatial variability is least understood. Two sites were selected for this study (University of Venda Experimental farm and Roodeplaat, Agricultural …
-
Influence of Terrain, Vegetative, and Hydraulic Properties on Sediment and Microplastic Accumulation in the Stroubles Creek Floodplain
… poorly understood. Difficulty quantifying hydraulic flow conditions is due to spatial variation introducing erroneous error. This study hypothesized floodplain sediment and microplastic accumulation would be closely correlated with topographic, vegetative, and hydraulic conditions. To test …
-
Understanding the Relationship between Hydraulic Properties of Rocks and Induced Seismicity in the Stimulation of Enhanced Geothermal Systems
… itself is a function of the hydrological properties evolution, permeability and porosity, with space and time in the course of the stimulation. We create an inverse modelling approach in which permeability enhancement candidate scenarios are proposed until the modelled seismicity density …
-
The morphological, sedimentary and hydraulic properties of two coarse clastic (pebble) beaches along the heritage coast of Glamorgan, Wales
… to clarify those morphological, sedimentary and hydraulic properties which typify coarse clastic beaches. <br/><br/>A tracer study on a low energy beach at Gileston identified shape and size sorting processes. Results showed that particle thickness (C-axis) was the most susceptible parameter to …
-
Soil burn severity and climatic analysis of post-wildfire soil hydraulic properties from across the western continental United States
… This compilation contains field saturated hydraulic conductivity (KFS) estimates from different soil burn severity classes and collection times post-burn. I quantified the impact of three common methodologies for KFS estimation on the re-processed compilation, and assessed the overall fit …
Page 1 of 6