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 13 of 13 for “"Southwest Indian Ocean"”.
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Marine weather variability, tropical cyclone prediction and impacts in the Southwest Indian Ocean
The southwestern Indian Ocean is characterized by significant inter-annual climate variability and numerous tropical cyclones. Long-and short-term variability and associated oceanic and atmospheric fields are analyzed using model-assimilated data. The evolution of monsoon circulations associated …
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Coccoliths and oxygen isotope observations from the sediment surface of the southwest Indian Ocean
… in one hundred deep sea core-tops from the southwest Indian Ocean is described. Three coccolith assemblages have been recognised (Maputo, Agulhas Current and deep water) and are delineated by the relative abundances of four ecologically significant coccolithophore species (Gephyrocapsa …
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Sensitivity of tropical cyclones in the Southwest Indian Ocean to the topography of Madagascar
… of tropical cyclone (TC) characteristics in the Southwest Indian Ocean (SWIO) to the presence of Madagascar topography. This is achieved through running two sensitivity experiments where the topography is i) flattened to a uniform plateau of 300 m height (FLAT run) or ii) ocean grid points …
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Evaluating CMIP6 Models in Simulating Southwest Indian Ocean Tropical Cyclone Activity (1979–2014): Comparison with ERA-5 Reanalysis
… models in simulating the characteristics of Southwest Indian Ocean (SWIO) tropical cyclone activities. The model’s simulation was performed for 35 years (1979-2014) and validated against the ERA-5 reanalysis data. The study also considers the influence of large-scale environmental conditions …
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Aspects of sea level variability in the southwest Indian Ocean and the east coast of Africa - (latitude 0-35°S and from the coast to 60°E)
… level observations of varying durations in the southwest Indian Ocean and the East coast of Africa (Lamu, Mombasa, Zanzibar, Durban, Port La Rue and Port Louis) show variability which are related to global, regional time scales, local weather and climatic changes, oceanographic and hydrological …
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A pilot study of seasonal and interannual patterns in the distribution of chlorophyll α and temperature over three areas of the southwest Indian Ocean: northeast Madagascar, southeast Madagascar and the Mascarene Islands
… and SST over three pilot study areas of the southwest Indian Ocean, namely Northeast Madagascar, Southeast Madagascar and Mascarene Islands. The weekly and monthly climatology and the weekly means of each variables are assessed using image displays and time series from 2003 to 2014. It is …
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A numerical simulation of tropical storm Chedza over south-eastern Africa
… heavy rainfall. Furthermore, moisture from the southwest Indian Ocean was advected into the region during the heavy rainfall. It is suggested that multiple favourable factors which included strong moisture fluxes from the southwest Indian Ocean and equatorial South Indian Ocean, near surface …
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An analysis of heavy rainfall events over the Limpopo River Basin in southern Africa, their moisture sources and pathways
… local continental, tropical southeast Atlantic Ocean, midlatitude South Atlantic Ocean, tropical Northwest Indian Ocean, tropical southwest Indian Ocean, subtropical southwest Indian Ocean, and the Agulhas Current. Important differences in moisture source regions and pathways exist between early …
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Geochemistry and mineralogy of selected Atlantic Ocean basalts
… in lavas from four localities in the Atlantic Ocean are evaluated quantitatively in terms of fractional crystallisation and partial melting models. Samples studied are from the Mid-Atlantic Ridge at 36°49 'N (FAMOUS), from the Islas Orcadas fracture zone on the Southwest Indian Ocean Ridge, …
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Drylines over the interior of subtropical southern Africa
… pathways through which moisture from the southwest Indian Ocean travel in the days leading up to a convective dryline. During early summer convective drylines tend to occur after sharp increases 7 in surface moisture ahead of the dryline, in the presence of a deep Kalahari Heat Low and an …
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Sea surface temperature-rainfall relationships and associated ocean-atmosphere coupling mechanisms in the southern African region
… sea surface temperature variability (SST) of the oceans surrounding southern Africa and summer rainfall variations over South Africa are investigated using statistical, observational and mechanistic approaches. Positive correlations are identified between summer rainfall and SSTs of the …
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Coral reefs of the Indo-Pacific and changes in global Holocene
… thesis examines the role of coral reefs in the oceanic carbonate budget and global carbon cycle both spatially and temporally during the Holocene. Using the most comprehensive reef area estimate to date, a conservative estimate of cumulative CaCO3 accumulation within coral reefs globally from 10 …
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Investigating the biogeochemistry of the Mozambique Channel thermocline using an optimum multiparameter analysis approach
The ocean's thermocline represents the transition zone between the surface and deep ocean. Its formation is linked to vertical and horizontal diffusion, and it constitutes part of the ocean's wind driven circulation, playing a critical role in the lateral advection and vertical supply of nutrients. …