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 16 of 16 for “"Deep Western Boundary Current"”.
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Variability in the North Atlantic Deep Western Boundary Current : upstream causes and downstream effects as observed at Line W
… remote sensing and in-situ measurements in the western North Atlantic. Using satellite altimetry and Sea Surface Temperature (SST) we found evidence of the relation between changes in the Gulf Stream path and the variability in the temperature and velocity fields in the Slope Water. This …
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Variability in the North Atlantic Deep Western Boundary Current : upstream causes and downstream effects as observed at Line W
… remote sensing and in-situ measurements in the western North Atlantic. Using satellite altimetry and Sea Surface Temperature (SST) we found evidence of the relation between changes in the Gulf Stream path and the variability in the temperature and velocity fields in the Slope Water. This …
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Cenozoic Variations in the Deep Western Boundary Current as Recorded in the Seismic Stratigraphy of Contourite Drifts, Newfoundland Ridge, Offshore Canada
… dynamics formed under the influence of the Deep Western Boundary Current (DWBC). Seismic-reflection profiles constrained by drill sites from IODP Expedition 342 are used to map the spatial and temporal distribution of contourite sedimentation and to evaluate the Cenozoic history of the DWBC …
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An Investigation into the dynamics of the ocean current system off southern Greenland
The ocean current system off Southern Greenland is a key component of the Earth’s<br/>climate system due to its role in the regulation of the global thermohaline<br/>circulation. A combination of historic and new observational data, supported by<br/>modelling simulations, has revealed great …
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Deep-marine depositional systems of the western North Atlantic: Insights into climate and passive-margin evolution
… to a given depositional environment, deposits in deep-marine settings, particularly passive margins, provide a unique, long-term record of paleoclimate, paleoceanography, and tectonics affecting the basin in question. Whereas deep-marine strata may be used to answer myriad of questions regarding …
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Dynamics of North Atlantic western boundary currents
The Gulf Stream and Deep Western Boundary Current (DWBC) shape the distribution of heat and carbon in the North Atlantic, with consequences for global climate. This thesis employs a combination of theory, observations and models to probe the dynamics of these two western boundary currents. First, …
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Dynamics of North Atlantic western boundary currents
The Gulf Stream and Deep Western Boundary Current (DWBC) shape the distribution of heat and carbon in the North Atlantic, with consequences for global climate. This thesis employs a combination of theory, observations and models to probe the dynamics of these two western boundary currents. First, …
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Structure, variability, and dynamics of the West Greenland Boundary Current System
… the Atlantic Meridional Overturning Circulation. Boundary current-interior interactions regulate the exchange of properties between the slope and the basin, which in turn regulates the magnitude of interior convection and the export of ventilated waters from the subpolar gyre. This thesis …
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Structure, variability, and dynamics of the West Greenland Boundary Current System
… the Atlantic Meridional Overturning Circulation. Boundary current-interior interactions regulate the exchange of properties between the slope and the basin, which in turn regulates the magnitude of interior convection and the export of ventilated waters from the subpolar gyre. This thesis …
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Terrigenous Grain-Size Record of the Newfoundland Ridge Contourite Drift, IODP Site U1411: The First Physical Proxy Record of North Atlantic Abyssal Current Intensity during the Eocene-Oligocene Transition
… of the shift to modern AMOC, and especially to deep-water formation in the North Atlantic, has been a topic of ongoing study, with the Eocene-Oligocene Transition (EOT, ~34 Ma) as a potential focal point of this shift. However, the role played by abrupt EOT cooling and Antarctic glaciation in …
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The entrainment and homogenization of tracers within the cyclonic gulf stream recirculation gyre
… The model is composed of a gyre adjacent to a boundary current in which a source of tracer is specified at the upstream edge of the current. This set up attempts to simulate the lateral transfer of properties from the Deep Western Boundary Current (DWBC) to the NRG in the region where the two …
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The entrainment and homogenization of tracers within the cyclonic gulf stream recirculation gyre
… The model is composed of a gyre adjacent to a boundary current in which a source of tracer is specified at the upstream edge of the current. This set up attempts to simulate the lateral transfer of properties from the Deep Western Boundary Current (DWBC) to the NRG in the region where the two …
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Decadal variability of the Atlantic Meridional Overturning Circulation
… is driven by buoyancy anomalies near the western boundary of the subpolar gyre. When a buoyancy anomaly hits the western boundary, it is advected southward by the deep western boundary current. Via the thermal wind relation, buoyancy anomalies on the boundaries result in anomalies in the …
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A study of North Atlantic ventilation using transient tracers
… The 3H concentration in the intermediate and deep waters for the sub-polar North Atlantic increased substantially between 1972 and 1981. A time dependent model for the 3H and 3He inflow to the abyssal Atlantic from the Nordic Seas is developed. The 3H and 3He distributions in the abyssal North …
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The modern and glacial thermoclines along the Bahama Banks
… salinity relationships demonstrate that the deep waters and most of the thermocline waters in these channels originates in the Sargasso Sea. Cross channel sections of water properties suggest the following: (1) water from the shallow core of the Deep Western Boundary Current (Fine and …
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Near-equatorial deep circulation in the Indian and Pacific oceans
Theory and observations of deep circulation in the near-equatorial Atlantic, Indian and Pacific Oceans are reviewed. Flow of deep and bottom water in the near-equatorial Indian and Pacific oceans, the two oceans with only a southern source of bottom water, is described through analysis of recent …