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 261 for “"water depth"”.
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Collector size effect on the measurement of applied water depth from irrigation systems
… calls for collectors to be used to measure the water depth emitted by the irrigation system. The standard was designed without specially considering the low pressure sprinklers now commonly used on center pivot systems; the recommended collectors may not accurately measure the applied depth from …
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On finite difference solutions for the ocean wave spectrum in regions of non-uniform water depth
This investigation is concerned with the determination of the sea state in terms of wave spectra. The phenomenon was calculated for two different bathymetries. The purpose is to develop a finite difference method with an upwind differencing scheme to g solve several formulations of the wave action …
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Diatom Assemblages in Relation to Water-Depth Gradients in Eight Boreal Shield Lakes From Northwestern Ontario, Canada
… the impact of future changes in climate and water resources has created renewed interest on how lakes have responded to drought in the past. There is a need to determine potential future available water by understanding past changes in water levels; the underlying ecological characteristics …
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An experimental investigation of the variation with water depth of lift or drag coefficients of a body on or near the bottom of a flowing stream
… the purpose of determining the influence of the depth of water upon the coefficients of lift and drag of a submerged body on or near the bottom of a flowing stream. This investigation made use of the facilities of the Rice University wave tank. Two types of models were employed in this study, an …
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Deriving bathymetry from multispectral and hyperspectral imagery
Knowledge of water depth is a crucial for planning military amphibious operations. Bathymetry from remote sensing with multispectral or hyperspectral imagery provides an opportunity to acquire water depth data faster than traditional hydrographic survey methods without the need to deploy a …
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Modeling sandbar effects on nearshore waves and morphological change using SWAN
… the bathymetry of an outer sandbar (in about 5-m water depth) on the nearshore wave field as the shallow (< 3 m) bathymetry changes from near alongshore uniform to strongly spatially variable to understand wave driven morphologic evolution. Waves were observed at Duck, NC with an array of 14 …
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Modeling Sandbar Effects on Nearshore Waves and Morphological Change using SWAN
… the bathymetry of an outer sandbar (in about 5-m water depth) on the nearshore wave field as the shallow (< 3 m) bathymetry changes from near alongshore uniform to strongly spatially variable to understand wave driven morphologic evolution. Waves were observed at Duck, NC with an array of 14 …
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Análise de instalação e desconexão de riser
… forces, and rotations, for different water depth are obtained considering different boundary and special conditions, to simulate systems operated with more security and efficiency. The extensional natural frequencies for rigid and compliant riser to all water depth and the natural …
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Bore Generation, Propagation, and Impact on Coastal Structures
… of bores due to dam-break, initial mound of water, and solitarywave breaking and the impact on coastal structures are studied in this research by employing three different theoretical approaches. The theoretical models are based on three sets of equations, namely the Reynolds-Averaged …
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Shallow water outfalls for brine disposal from desalination plants
… to discharge industrial effluents in coastal waterbodies. Examples of such effluents include heated water from thermal power plants, treated wastewater effluent from sewage treatment plants, and reject brine from desalination plants. At locations with shallow water depth, the interaction …
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Kinematics of the equine axial skeleton during aqua-treadmill exercise
… opportunities to further quantify the effect of water depth on locomotion in order to optimise aqua-treadmill protocols to see improved rehabilitation from injury or to exercise horses more effectively for their chosen discipline. Much of the current aqua-treadmill literature focusses on the …
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Foraminiferal biostratigraphy and palaeoecology of the Albian to Santonian (Cretaceous) of Bornholm, Denmark
… interval overall shows stable outer shelf water depths, whilst the Late Coniacian-Santonian is probably characterised by an initial phase of increasing water depth followed by a probably tectonically influenced water depth reduction.
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The paleoceanography of the Bering Sea during the last glacial cycle
… (kiloyears before present) in a core from 1467m water depth near Umnak Plateau, there were episodic occurrences of diagenetic carbonate minerals with very low δ13C (-22:4h), high δ18O (6.5h), and high [Mg]/[Ca], which seem associated with sulfate reduction of organic matter and possibly anaerobic …
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The paleoceanography of the Bering Sea during the last glacial cycle
… (kiloyears before present) in a core from 1467m water depth near Umnak Plateau, there were episodic occurrences of diagenetic carbonate minerals with very low 13C (-22.4%), high 18O (6.5%), and high [Mg]/[Ca], which seem associated with sulfate reduction of organic matter and possibly anaerobic …
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The Effect of Shallow Water on Roll Damping and Rolling Period
… with the USS Midway showed that shallow water has significant effect on the rolling period and thus the experimentally determined roll gyradius. To date, little effort has been directed to the problem of the effect of shallow water on roll damping and roll period except when trying to …
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Cross-Shore Sediment Transport in Relation to Waves and Currents in a Groin Compartment
… duration in the offshore direction in shallow water. This trend reversed with greater depth. The peak velocities were found to be more important than the complete velocity distribution for the net cross-shore sediment transport rate under oscillatory flow. The rate of sediment transport …
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Seafloor ripples created by waves from Hurricane Ivan on the west Florida shelf
… left after the storm were found to increase with water depth (50 cm, 62 cm, and 83 cm in 20, 30, and 50 meter water depths) despite the fact that orbital diameter decreases with water depth. Ripple prediction requires information about surface gravity waves and sediment grain size. The most …
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LIFE HISTORY SWITCH POINT PLASTICY IN RESPONSE TO POND DRYING ALYERS METAMORPH ALLOMETRY AND JUMPING PERFORMANCE
… We conducted a field study with three different water depth treatments in 60 L mesocosms and measured time and size at metamorphosis, hind limb length and jumping performance. We also conducted a complimentary laboratory study that manipulated resources and water depth. In the field experiment, …
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Seafloor ripples created by waves from hurricane Ivan on the west Florida shelf
… left after the storm were found to increase with water depth (50 cm, 62 cm, and 83 cm in 20, 30, and 50 meter water depths) despite the fact that orbital diameter decreases with water depth. Ripple prediction requires information about surface gravity waves and sediment grain size. The most …
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