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 25 for “"Sverdrup"”.
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Calcite cements in carbonates of the Sverdrup Basin, Canadian Arctic Archipelago.
… the Upper Paleozoic sequences 2, 3 and 4 of the Sverdrup Basin (Canadian Arctic Archipelago) are the subject of this study. On a micro-scale, petrography with light microscopy, cathodoluminescence (CL), scanning electron microscopy (SEM) and staining helped to identify two main textural groups of …
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Sverdrup Balance and Three Dimensional Variability of the Meridional Overturning Circulation
… framework within which those changes occur. Sverdrup balance is studied using the 16 year ECCO-GODAE state estimation. It is shown to hold well in the interior subtropics when integrating to a mid-depth level and when considered at spatial scales larger than approximately 5◦. Outside of the …
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Stratigraphy, sedimentology and resource assessment of the Lower Cretaceous Isachsen Formation: Sverdrup Basin, Ellef Ringnes Island, Nunavut, Arctic Canada
… from tens of meters to over 1400 m within the Sverdrup Basin of the Canadian Arctic Archipelago. The formation exhibits a variety of lithologies including coarse-grained quartz-arenite sandstones, fine-grained ripple laminated sandstones and siltstones, marine mudstones and coal deposits that …
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Quantitative palynological analyses of Albian-Cenomanian (Lower to Upper Cretaceous) strata in the Sverdrup Basin: Insights into paleoecology, paleoclimatology and palynostratigraphy
… to Cenomanian (Lower to Upper Cretaceous), Sverdrup Basin strata reveal a landscape with wet lowlands inhabited by Pteridophytina and Bryophyta, with cooler, moist uplands inhabited by a variety of conifer plants. A humid and temperate climate prevailed at this time. Three sites from eastern …
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On the role of topography and of boundary forcing in the ocean circulation
… analyze some consequences of the failure of Sverdrup relation. In the first part, Chapters 2 and 3, the Sverdrup relation is invalidated because substantial flow is obtained at the bottom where topography exists. The eddies play an essential role in transfering momentum vertically from the …
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Upper Ocean Transport Variability in the Subtropical North Atlantic
… Atlantic is used to estimate both the Ekman and Sverdrup transports and to isolate the dominant time and space scales of variability.<br/><br/>The mean zonally integrated interior transport above 1000 dbar between the eastern boundary and the Gulf Stream was -48.0 ± 3.3 Sv, where the error …
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Investigating the seasonal and interannual variability of the poleward undercurrent in the northern Benguela system
… of the study is on the PUC associated with the Sverdrup relation. The model ORCA-025 was used to reproduce zonal transects from 17° S to 30° S to determine the changing characteristics of the PUC with latitude as well as seasonal and interannual variability of this current. The PUC is faster …
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Aerodynamic optimization of a solar powered race vehicle
… solar car using Wind Tunnel 8 at Jacobs/Sverdrup Drivability Test Facility in Allen Park, MI. These tests include angle of attack and ride height optimization, as well as vehicle-level details such as wheel fairing length, surface finish, sealing, and rear-view mirrors. These tests …
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Seasonal oscillations in a mid-latitude ocean with barriers to deep flow
… of the response is a barotropic quasi-steady Sverdrup balance. A meridional ridge such as the Antilles Arc is modeled as an infinitely thin meridional barrier that blocks the lower layer but does not protrude into the upper layer. It is found that such a barrier has little effect on the upper …
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Interpreting Early Triassic (Smithian) sea-level change and climate using sequence stratigraphy and oxygen isotopes of conodont apatite
… area in eastern British Columbia, Canada, and Sverdrup Basin in the Canadian Arctic. Conodont Alteration Index or CAI (a measure of post-burial thermal alteration based on color) was estimated for each of the locations listed above and range from 1.5 for Wapiti Lake and the Confusion Range to 5 …
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Resposta das circulações oceânica e atmosférica associada ao enfraquecimento da circulação termohalina global
… oceânica e atmosférica devido a um aumento de 1 Sverdrup (Sv) (1 Sv = 106m3s-1) no transporte de água doce no Atlântico Norte, com base em simulações realizadas com um modelo climático acoplado (LOVECLIM). Os resultados demonstram que o enfraquecimento da CTG provoca um forte resfriamento no …
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High performance simulations of yield stress fluids in a structured adaptive mesh refinement framework with embedded boundaries
Viscoplastic fluids are a class of non-Newtonian liquids characterised by their yield stress. Unless an external stress is applied which is larger than this threshold value, the fluid does not flow, but exhibits rigid body behaviour. Above the yield stress, applied forces cause viscous deformation. …
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On the calculation of wind stress curl over open ocean areas from synoptic meteorological data with application to time dependent ocean circulation
… eastern slope of the Grand Banks using static Sverdrup dynamics.
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Lignocellulosic Bio Fuel Production In Iceland, A System Dynamics Approach.
… Expanding on a forestry model proposed by Sverdrup and Ólafsdóttir (2017) and assuming that all grassland in Iceland is rigth for forestry, We conclude that maxi- mum utilization of a 400 t / d would at the earliest be in the year 2050, if all of the wood harvested in Iceland would go …
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The vertical structure of the wind-driven circulation
… dimensional structure of the currents in the Sverdrup interior of a wind-driven gyre are discussed. A variety of simple analytic models suggest that the subsurface geostrophic contours in a wind gyre are closed and so the flow in these regions is not determined by lateral boundary conditions. …
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Simulation of annual cycles of phytoplankton, zooplankton and nutrients using a mixed layer model coupled with a biological model
… the layer and a phytoplankton bloom in February. Sverdrup critital depth euphotic theory is applied in the interpretation of these observations. Finally the model validation is achieved either through in situ data, or through climatic data, bringing to light a qualitative and quantitative …
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Strukturna korelaciona analiza u interpretaciji vektorskih koeficijenata korelacije
… koeficijenta korelacije (Detzius 1916, Sverdrup 1917, Charles 1959, Buell 1971, Breckling 1989, Crosby 1991), a u istraživanju kandidata, za utvrđivanje veze između m-dimenzionalne promenljive Y i ndimenzionalne promenljive X koristićemo jednačinu v v v yy xx W = (1- R2 )maxW = (1- R2 )W …
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Analysis and interpretation of tidal currents in the coastal boundary layer
… model employing long, rotational, gravity waves (Sverdrup waves) and an absorbing coastline explains the ellipse orientations and onshore energy flux as a consequence of energy dissipation in shallow water. Finally, an analytical model with realistic topography suggests that tidal dissipation may …
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Analysis and interpretation of tidal currents in the coastal boundary layer
… model employing long, rotational, gravity waves (Sverdrup waves) and an absorbing coastline explains the ellipse orientations and onshore energy flux as a consequence of energy dissipation in shallow water. Finally, an analytical model with realistic topography suggests that tidal dissipation may …
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