An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands

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dc.contributor.authorAnsorge, I J
dc.contributor.authorFroneman, P W
dc.contributor.authorLutjeharms, J R E
dc.contributor.authorBernard, K
dc.contributor.authorBernard, A
dc.contributor.authorLange, L
dc.contributor.authorLukác, D
dc.contributor.authorBackeburg, B
dc.contributor.authorBlake, J
dc.contributor.authorBland, S
dc.contributor.authorBurls, N
dc.contributor.authorDavies-Coleman, M
dc.contributor.authorGerber, R
dc.contributor.authorGildenhuys, S
dc.contributor.authorHayes-Foley, P
dc.contributor.authorLudford, A
dc.contributor.authorManzoni, T
dc.contributor.authorRobertson, E
dc.contributor.authorSouthey, D
dc.contributor.authorSwart, S
dc.contributor.authorVan Rensburg, D
dc.contributor.authorWynne, S
dc.date.accessioned2017-05-16T11:11:00Z
dc.date.available2017-05-16T11:11:00Z
dc.date.issued2004
dc.date.updated2016-01-08T09:10:36Z
dc.description.abstractA DETAILED HYDROGRAPHIC AND BIOLOGical survey was carried out in the region of the South-West Indian Ridge during April 2004. Altimetry and hydrographic data have identified this region as an area of high flow variability. Hydrographic data revealed that here the Subantarctic Polar Front (SAF) and Antarctic Polar Front (APF) converge toform a highly intense frontal system. Water masses identified during the survey showed a distinct separation in properties between the northwestern and southeastern corners. In the north-west, water masses were distinctly Subantarctic (>8.5°C, salinity >34.2), suggesting that the SAF lay extremely far to the south. In the southeast corner water masses were typical of the Antarctic zone, showing a distinct subsurface temperature minimum of <2.5°C. Total integrated chl-a concentration during the survey ranged from 4.15 to 22.81mgchl-am–2,with the highest concentrations recorded at stations occupied in the frontal region. These data suggest that the region of the South-West Indian Ridge represents not only an area of elevated biological activity but also acts as a strong biogeographic barrier to the spatial distribution of zooplankton.
dc.identifier.apacitationAnsorge, I. J., Froneman, P. W., Lutjeharms, J. R. E., Bernard, K., Bernard, A., Lange, L., ... Wynne, S. (2004). An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands. <i>South African Journal of Science</i>, http://hdl.handle.net/11427/24329en_ZA
dc.identifier.chicagocitationAnsorge, I J, P W Froneman, J R E Lutjeharms, K Bernard, A Bernard, L Lange, D Lukác, et al "An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands." <i>South African Journal of Science</i> (2004) http://hdl.handle.net/11427/24329en_ZA
dc.identifier.citationHYDROGRAPHIC, A. (2004). An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands. South African journal of science, 100, 319.
dc.identifier.ris TY - AU - Ansorge, I J AU - Froneman, P W AU - Lutjeharms, J R E AU - Bernard, K AU - Bernard, A AU - Lange, L AU - Lukác, D AU - Backeburg, B AU - Blake, J AU - Bland, S AU - Burls, N AU - Davies-Coleman, M AU - Gerber, R AU - Gildenhuys, S AU - Hayes-Foley, P AU - Ludford, A AU - Manzoni, T AU - Robertson, E AU - Southey, D AU - Swart, S AU - Van Rensburg, D AU - Wynne, S AB - A DETAILED HYDROGRAPHIC AND BIOLOGical survey was carried out in the region of the South-West Indian Ridge during April 2004. Altimetry and hydrographic data have identified this region as an area of high flow variability. Hydrographic data revealed that here the Subantarctic Polar Front (SAF) and Antarctic Polar Front (APF) converge toform a highly intense frontal system. Water masses identified during the survey showed a distinct separation in properties between the northwestern and southeastern corners. In the north-west, water masses were distinctly Subantarctic (>8.5°C, salinity >34.2), suggesting that the SAF lay extremely far to the south. In the southeast corner water masses were typical of the Antarctic zone, showing a distinct subsurface temperature minimum of <2.5°C. Total integrated chl-a concentration during the survey ranged from 4.15 to 22.81mgchl-am–2,with the highest concentrations recorded at stations occupied in the frontal region. These data suggest that the region of the South-West Indian Ridge represents not only an area of elevated biological activity but also acts as a strong biogeographic barrier to the spatial distribution of zooplankton. DA - 2004 DB - OpenUCT DP - University of Cape Town J1 - South African Journal of Science LK - https://open.uct.ac.za PB - University of Cape Town PY - 2004 T1 - An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands TI - An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands UR - http://hdl.handle.net/11427/24329 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/24329
dc.identifier.vancouvercitationAnsorge IJ, Froneman PW, Lutjeharms JRE, Bernard K, Bernard A, Lange L, et al. An interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands. South African Journal of Science. 2004; http://hdl.handle.net/11427/24329.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanographyen_ZA
dc.publisher.facultyFaculty of Scienceen_ZA
dc.publisher.institutionUniversity of Cape Town
dc.sourceSouth African Journal of Science
dc.source.urihttp://www.sajs.co.za/
dc.titleAn interdisciplinary cruise dedicated to understanding ocean eddies upstream of the Prince Edward Islands
dc.typeJournal Article
uct.type.filetypeText
uct.type.filetypeImage
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