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  • 11
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    Springer
    In:  In: The South Atlantic: Present and Past Circulation. , ed. by Wefer, G., Berger, W. H., Siedler, G. and Webb, D. J. Springer, Berlin, Germany, pp. 355-361.
    Publication Date: 2013-01-15
    Type: Book chapter , NonPeerReviewed
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  • 12
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    Springer
    In:  In: Landolt-Börnstein Zahlenwerte und Funktionen aus Naturwissenschaften und Technik: Neue Serie = Numerical data and functional relationships in science and technology: new series / Ed.-in-chief: O. Madelung Gruppe 5, Geophysik und Weltraumforschung = Geophysics and space research Bd. 3, Ozeanographie = Oceanography, Teilband a. Springer, Berlin, Germany, pp. 233-264. ISBN 3-540-15092-7
    Publication Date: 2020-03-05
    Type: Book chapter , NonPeerReviewed
    Format: text
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  • 13
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    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Oceans, 103 (C3). pp. 5419-5428.
    Publication Date: 2018-04-30
    Description: Recent hydrographic sections and high-quality historical data sets are used to determine geostrophic currents at subtropical latitudes in the western basin of the South Atlantic. Levels of no motion are determined from water mass information and a mass balance constraint to obtain the transport field of North Atlantic Deep Water (NADW) in this region. The incoming NADW transport of about 20 Sv from the north at 19 degrees S appears to be balanced by only one third of this transport leaving in the south and two thirds leaving to the east or northeast at the Mid-Atlantic Ridge. A simple model is proposed to determine the cause of the NADW branching. It is shown that potential vorticity preservation in the presence of topographic changes leads to a similar flow pattern as observed, with branching near the Vitoria-Trindade-Ridge and also an eastward turning of the southward western boundary current at about 28 degrees S, the latitude where a balance of planetary vorticity change and stretching can be expected.
    Type: Article , PeerReviewed
    Format: text
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  • 14
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    Springer
    In:  Deutsche Hydrographische Zeitschrift, 36 (2). pp. 61-77.
    Publication Date: 2016-11-02
    Description: Anhand hundertjähriger Meßreihen wurden langfristige Salzgehaltsänderungen in der Unterweser und ihre möglichen Ursachen untersucht. Dabei wurde angestrebt, die natürlichen und die anthropogenen Einflüsse auf den Salzgehalt zu trennen. Trotz des unvollständigen Datensatzes konnten der Einfluß des Einzugsgebietes und Salzgehaltsschwankungen des angrenzenden Meeresgebietes nahezu eliminiert werden. Wegen der langzeitigen Änderungen der Gezeiten in der Nordsee waren genaue Aussagen über die Auswirkung der in den letzten hundert Jahren in der Unterweser durchgeführten Baumaßnahmen auf den Salzgehalt nicht möglich. Unsere Ergebnisse geben Hinweise für moderne Meßnetze zur Bestimmung der Wasserqualität.
    Type: Article , PeerReviewed
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  • 15
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    AGU (American Geophysical Union)
    In:  Journal of Geophysical Research: Oceans, 94 (C4). pp. 4757-4762.
    Publication Date: 2019-02-27
    Description: A 4-year expendable bathythermograph data set (1984–1987) from the area between southern Brazil and the Antarctic Peninsula provides information on the interannual variability of front locations. Two boundaries of subtropical water at different depths are identified north and south of the Brazil Current-Falkland (Malvinas) Current confluence zone. The northern Subtropical Front is displaced over a large part of the Argentine Basin from one observational period to the other. The shallow southern Subtropical Front appears fixed to the Falkland Escarpment. The Polar Front and Subantarctic Front locations do not vary much, except for one case where a cold core eddy in the Polar Frontal Zone causes a large northward displacement of the Subantarctic Front.
    Type: Article , PeerReviewed
    Format: text
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  • 16
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    Springer
    In:  In: The South Atlantic: Present and Past Circulation. , ed. by Wefer, G., Berger, W. H., Siedler, G. and Webb, D. J. Springer, Berlin, Heidelberg, pp. 105-120. ISBN 3-540-62079-6
    Publication Date: 2020-04-03
    Description: Hydrographic data along 11°S occupied in 1983 by the R.V. OCEANUS are used together with various wind climatologies to estimate the annual average transport of heat at this latitude. Some motivation for expecting fairly well-defined estimates at this latitude compared to others comes from the absence of a strong western boundary current. Results include flow in four layers representing the thermocline, Antarctic Intermediate Water, North Atlantic Deep Water, and Antarctic Bottom Water, using zero velocity reference level choices based on property distributions. The annual average heat transport is estimated to be 0.6 ± 0.17 x 1015 W. Previous estimates of the transport at 8–16°S range from 0.2 PW to greater than 1 PW. Interannual variability from the wind field alone leads to interannual heat transport variability of about 0.05 PW. Comparisons with other recent studies at 45–30°S and 11°N are made.
    Type: Book chapter , NonPeerReviewed
    Format: text
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  • 17
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    Springer
    In:  In: The South Atlantic: Present and Past Circulation. , ed. by Wefer, G., Berger, W. H., Siedler, G. and Webb, D. J. Springer, Berlin, Germany, pp. 249-260.
    Publication Date: 2019-09-12
    Description: The Deep Basin Experiment (DBE), a part of the World Ocean Circulation Experiment (WOCE), is presently underway in the Brazil Basin of the South Atlantic. The program objectives and design philosophy are reviewed and early results are presented. Observations from a moored array along the southern boundary and neutrally buoyant float trajectories in the North Atlantic Deep Water and Antarctic Bottom Water are described with emphasis on their relationship to the recent flow schemes offered by Reid (1989). Also discussed are the process of cross isotherm mixing within the intense flow regime of the Verna Channel and observations of long period warming of the bottom water.
    Type: Book chapter , NonPeerReviewed
    Format: text
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  • 18
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    Springer
    In:  In: Hot Brines and Recent Heavy Metal Deposits in the Red Sea. , ed. by Degens, E. T. and Ross, D. A. Springer, New York, USA, pp. 131-137.
    Publication Date: 2013-01-15
    Type: Book chapter , NonPeerReviewed
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  • 19
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    Springer
    In:  In: Meereskunde der Ostsee. , ed. by Magaard, L. and Rheinheimer, G. Springer, Berlin, Germany, pp. 46-60.
    Publication Date: 2013-05-14
    Type: Book chapter , NonPeerReviewed
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  • 20
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    Springer
    In:  In: Eddies in marine science. , ed. by Robinson, R. A. Springer, New York, USA, pp. 181-199.
    Publication Date: 2013-01-15
    Type: Book chapter , NonPeerReviewed
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