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  • Other Sources  (3)
  • 2000-2004  (3)
  • 1960-1964
  • 1930-1934
  • 2004  (2)
  • 2001  (1)
  • 1960
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  • 2000-2004  (3)
  • 1960-1964
  • 1930-1934
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  • 1
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    Unknown
    Taylor & Francis
    In:  International Journal of Remote Sensing, 25 (7-8). pp. 1337-1340.
    Publication Date: 2015-10-08
    Description: The hydrographic conditions in the south-east Atlantic were investigated during the cruise of R/V Poseidon in April 1999. The area of investigation covers the two major eastern boundary currents of the Southern Atlantic and its convergence in the Angola-Benguela Frontal Zone (ABFZ). Hydrographic measurements have been carried out in combination with current measurements and are supplemented with remote sensing data of sea surface temperature (SST) and wind stress. The Angola Current transported in its surface part less saline water from the great rivers in the north towards the ABFZ. At the same time, south of the front, strong coastal upwelling in the Benguela was observed. At the beginning of April 1999 the ABFZ was found at an unusual southern position. The rapid dynamic response of the ABFZ to wind forcing is discussed on the basis of satellite SST images combined with hydrographic measurements.
    Type: Article , PeerReviewed
    Format: text
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  • 2
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    In:  South African Journal of Science, 97 (5-6). pp. 199-208.
    Publication Date: 2015-10-12
    Description: A multidisciplinary survey on board R.V. Poseidon off Angola and northern Namibia in April 1999 allowed a large-scale view of the South-East Atlantic boundary current system. The data set comprises meteorological, hydrographical, biological and chemical data. Sequences of satellite images of sea-surface temperature and wind stress provided additional synoptic information. Several mesoscale cyclonic gyres were observed embedded in a larger area of low dynamic height, known as the Angola Gyre. The most developed mesoscale feature was the subthermoclinal Angola Dome detected at 9 degreesS, 8.5 degreesE. At the beginning of April, the Angola-Benguela Frontal Zone (ABFZ) was found at an unusually southerly position near 19 degreesS. During the time of the cruise, the zone moved rapidly northward. The dynamics of this event are discussed in detail. The high-frequency temporal variations of the front were closely related to local wind forcing. Below the thermocline the conditions were more persistent. The ABFZ was represented as a front between different types of Central Water. The existence of a poleward undercurrent below the ABFZ, reported in recent publications, was not verified from direct current measurements. However, water mass distribution suggests overall poleward transport below the thermocline.
    Type: Article , PeerReviewed
    Format: text
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  • 3
    Publication Date: 2012-02-23
    Type: Conference or Workshop Item , NonPeerReviewed
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