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 477 for “"Upwelling"”.
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Numerical Flow Modeling of Artificial Upwelling
… of greenhouse gas emissions. Artificial upwelling of nutrient-rich deep ocean water to the surface ocean is studied as a standalone marine CDR option or in combination with other measures, such as macroalgae farming. This thesis aims to inform the overarching assessment of artificial …
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Shelf edge upwelling off Northern Mozambique
… occurrence and temporalspatial variability of upwelling near Angoche. The data were derived from MODIS SST and Chl-a between 2003 and 2007, in situ moored underwater temperature recorder at a depth of 18 m for the period 2003ô2007 and two shipboard surveys providing CTD and XBT data in December …
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On the theory of coastal upwelling.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1969.
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Zooplankton of the Cape Peninsula upwelling region
… in the vicinity of an extremely active upwelling site in the southern Benguela Current is described. Zooplankton samples collected in oceanic, newly-upwelled and mature upwelled water showed that temperature, chlorophyll and time of day had considerable effects on the vertical …
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Variability of coastal upwelling south of Madagascar
… biological productivity is attributed to coastal upwelling. The thesis seeks to characterise the variability of the coastal upwelling south of Madagascar. The first part of the thesis provides new insights on the structure, variability and drivers of the coastal upwelling south of Madagascar. …
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Stability of a coastal upwelling front over topography
… to investigate the linear stability of a coastal upwelling front. The model features a surface front near a coastal boundary and bottom topography which is an arbitrary function of the cross-shelf coordinate. By combining the various conservation statements for the global properties of the system, …
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Wind-stress variability over the Benguela upwelling system
… wind-stress variability over the Benguela Upwelling System is described using 16 months (01 August 1999 29 November 2000) of satellite derived QuikSCA T wind data. The QuikSCA T data are compared to the climatologies presented by Kamstra (1985) and Bakun and Nelson (1991), as well as the …
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Retention processes in the Southern Benguela upwelling system
The Benguela Upwelling System is one of four major Eastern Boundary Upwelling Systems (EBUS) in the global ocean. Here, equatorward winds drive the upwelling of cold, deep, nutrient-rich waters along the coast, which drives high levels of biological productivity. A consequence of this high …
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Bacterioplankton dynamics in the Southern Benguela upwelling region
… development of the planktonic community after upwelling. Bacterial community structure, activity and production were closely coupled to the upwelling cycle and to the dynamics of the phytoplankton community. The initial bacterial population (<l x 10⁶ cells ml⁻¹, 20 to 40 μg C l⁻¹) was …
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Stability of a coastal upwelling front over topography
Thesis (Ph. D.)--Joint Program in Oceanography, Massachusetts Institute of Technology/Woods Hole Oceanographic Institution, 1988.
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Trace element signatures of Peruvian and Chilean upwelling sediments
… to those off Peru. A comparison of global upwelling sediment chemistries yields that two types of upwelling sediments are discernable due to their different degree in trace element accumulation.
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Nitrogen nutrition of harmful algal blooms in upwelling systems
… species are known to occur in eastern boundary upwelling systems, coincident with the relaxation of upwelling in late<br/>summer/autumn. Field studies were carried out in 3 consecutive summers (March/April 06-08)<br/>in the Benguela and in the autumn (Sept 06) and summer (June 07) in the Iberian …
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The ecology of picophytoplankton in a coastal upwelling ecosystem
The dynamic Benguela Upwelling System is one of four major upwelling regions in the world and is subdivided into two sub-systems, the northern and southern Benguela. This current study was conducted within the southern Benguela, which lies between 27°S and 35°S (Orange River Mouth to East London) …
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Lateral carbon export from the southern Benguela upwelling system
… the continental shelf of the southern Benguela upwelling system to the open ocean. The flux is potentially important because the Benguela is one of the most productive and biogeochemically active ecosystems in the global ocean. Furthermore, a significant fraction of oceanic carbon storage is …
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Empirical dynamics of a small scale coastal upwelling region
… of a small space scale (less than 10 km) coastal upwelling region at the temporal scales spanning hours to years. Three to four year time series data sets of, sea temperatures at different depths (2m, 5 m and 8,5 m) one kilometer offshore, of wind and of waves, obtained from Eskom for the Koeberg …
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Lateral carbon export from the southern Benguela upwelling system
… the continental shelf of the southern Benguela upwelling system to the open ocean. The flux is potentially important because the Benguela is one of the most productive and biogeochemically active ecosystems in the global ocean. Furthermore, a significant fraction of oceanic carbon storage is …
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Equatorial ocean dynamics impacting upwelling west of the Galápagos Archipelago
… GCP is maintained by wind- and current-driven upwelling. The Galápagos Archipelago lies on the equator, in the path of the Pacific Equatorial Undercurrent (EUC) as it flows eastward across the Pacific at the depth of the thermocline. It is hypothesized that the EUC upwells into the GCP as it …
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Seaglider observations of biogeochemical variability in the Iberian upwelling system.
Seasonal upwelling events along the Galician coastline of the North Atlantic furnish the upper watercolumn with nutrients, resulting in strong summer phytoplankton blooms and the sustenance of one of Europe’s largest fisheries. The episodic nature of these upwelling events result in considerable …
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Bacterial populations and their activity in the Benguela upwelling system
An investigation of variability in hydrological and bacterial parameters at a fixed coastal station (Oudekraal. Cape Peninsula 33°59'S 17°21'E) showed that bacterial populations varied in numbers and biomass on both a short term (daily) and seasonal basis in response to changes in hydrological …
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