Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn

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dc.contributor.advisorAnsorge, Isabelle Janeen_ZA
dc.contributor.advisorFroneman, Williamen_ZA
dc.contributor.authorGeorge, Carenen_ZA
dc.date.accessioned2014-08-13T19:48:55Z
dc.date.available2014-08-13T19:48:55Z
dc.date.issued2009en_ZA
dc.descriptionIncludes abstract.en_ZA
dc.descriptionIncludes bibliographical references (leaves 49-58).en_ZA
dc.description.abstractA research survey was conducted, consisting of six transects between 38°- 46°S and 38 - 41°45'E, during the austral autumn of 2007. The aim of the survey was to investigate the physical, chemical and biological dynamics of the Subtropical Convergence (STC), in the SW Indian sector of the Southern Ocean. Satellite data was obtained and in-situ data were collected. Mixed layer depth (MLD), geostrophic velocities, density and Brunt Vaisala frequencies were calculated. The STC meandered across the survey area between 41 ° - 42°15'S. The total integrated Chl-a ranged from 12.8 to 40.1 mg Chl-a/m2. The most significant correlation between biological and physical data was that of Chl-a and MLD (r=-0.374, n=45, p=0.013) over the entire survey region. Phosphate and nitrate (r=0.8779, n=45, p=0.001) measured over the survey region were strongly correlated, as expected. The surface currents showed cyclonic motion between 38° - 39°E and 38 - 42°S, with the exception of an eddy-like feature between 39.5°and 40.5"S and generally anti-cyclonic motion to the east of 39°E.en_ZA
dc.identifier.apacitationGeorge, C. (2009). <i>Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn</i>. (Thesis). University of Cape Town ,Faculty of Science ,Department of Oceanography. Retrieved from http://hdl.handle.net/11427/6475en_ZA
dc.identifier.chicagocitationGeorge, Caren. <i>"Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn."</i> Thesis., University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009. http://hdl.handle.net/11427/6475en_ZA
dc.identifier.citationGeorge, C. 2009. Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - George, Caren AB - A research survey was conducted, consisting of six transects between 38°- 46°S and 38 - 41°45'E, during the austral autumn of 2007. The aim of the survey was to investigate the physical, chemical and biological dynamics of the Subtropical Convergence (STC), in the SW Indian sector of the Southern Ocean. Satellite data was obtained and in-situ data were collected. Mixed layer depth (MLD), geostrophic velocities, density and Brunt Vaisala frequencies were calculated. The STC meandered across the survey area between 41 ° - 42°15'S. The total integrated Chl-a ranged from 12.8 to 40.1 mg Chl-a/m2. The most significant correlation between biological and physical data was that of Chl-a and MLD (r=-0.374, n=45, p=0.013) over the entire survey region. Phosphate and nitrate (r=0.8779, n=45, p=0.001) measured over the survey region were strongly correlated, as expected. The surface currents showed cyclonic motion between 38° - 39°E and 38 - 42°S, with the exception of an eddy-like feature between 39.5°and 40.5"S and generally anti-cyclonic motion to the east of 39°E. DA - 2009 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2009 T1 - Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn TI - Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn UR - http://hdl.handle.net/11427/6475 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/6475
dc.identifier.vancouvercitationGeorge C. Understanding the physical, chemical and biological processes across the subtropical convergence during austral automn. [Thesis]. University of Cape Town ,Faculty of Science ,Department of Oceanography, 2009 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/6475en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherOceanographyen_ZA
dc.titleUnderstanding the physical, chemical and biological processes across the subtropical convergence during austral automnen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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