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  • 1
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    Structure of the Mediterranean water and meddy characteristics in the Northeastern Atlantic (1996)
    Bornträger
    In:  In: The Warmwatersphere of the North Atlantic Ocean. , ed. by Krauß, W. Bornträger, Berlin, Germany, pp. 365-395. ISBN 3-443-01033-4
    Details
    Publication Date: 2020-04-09
    Type: Book chapter , NonPeerReviewed
    Format: text
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  • 2
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    Some current observations near the continental slope off Portugal (1975)
    Bornträger
    Details
    Publication Date: 2022-06-22
    Description: Some current meter data obtained from a mooring at 2450 m water depth near the continental slope off Portugal are presented. The mean currents at five levels with observations are northward. Mean speeds in the core of the Mediterranean Water exceed speeds at shallower levels by 2 to 3 cm/sec, indicating advection connected to this specific water mass. The current variability is dominated by semi-diurnal tidal components. Normal mode analysis reveals a predominant mode of order 2, representing 48% of the total kinetic tidal energy. Results for the barotropic tidal component are in good agreement with earlier predictions for this area. The motion at higher frequencies ω in the internal gravity wave band can be well described by a ω-2 power law for the energy density spectrum. This result is consistent with earlier observations in other parts of the ocean.
    Type: Article , PeerReviewed
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  • 3
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    On the origin of the intermediate double-maxima in the T/S profiles from the North Atlantic (1975)
    Bornträger
    Details
    Publication Date: 2022-06-22
    Description: Continuous temperature and salinity profiles from the NE-Atlantic frequently show a double-maxima straucture within the depth range of the Mediterranean outflow. Two explanations for this special thermohaline stratification con be found in literature: a) The density of the outflow is varied by different outflow channels with unequal mixing properties. b) In the Strait of Gibraltar two different outflowing water types are produced by tidal currents. in both cases the different water masses spread in different density levels in the Atlantic. Data presented here indicate that the bimodal straucture must be caused primarily by tidal currents at the source. Two-layered outflowing Mediterranean water was observed even before a splitting of the under-current in the Gulf of Cádiz takes place. The variability of the double-maxima can be explained by varying outflow rates in the source region rather than by a steady influence of the bottom topography.
    Type: Article , PeerReviewed
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  • 4
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    Some current and temperature observations in the Mediterranean outflow west of Gibraltar, a data report (1974)
    Bornträger
    Details
    Publication Date: 2022-06-22
    Description: At seven sites west of Gibraltar current and temperature variations of the Mediterranean outflow were observed during one month in spring 1971. This paper presents the obtained records of 29 current meters and 5 thermistor cables in the form of time series, amplitude spectra, and progressive vector diagrams as a basis for further evaluation. Characteristic featurcs of the currents like mean spceds, mean directions and the periodicity of the variation can be seen directly from the given plots.
    Type: Article , PeerReviewed
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  • 5
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    On the Mediterranean outflow west of Gibraltar (1975)
    Bornträger
    Details
    Publication Date: 2022-06-22
    Description: During "Meteor" cruise 23 in spring 1971 intensive investigations of the Mediterranean outflow in the Gulf of Cádiz were carried out. In order to give a budget of the inflow and outflow numerous CTD-stations were taken. The observations also included six moored current meter arrays deployed in the known outflow channels. The considerations given here are based mainly on three hydrographic sections, current meter records averaged over one month, and geological observations from the bed forms beneath the Mediterranean undercurrent. The results show that the outflow essentially is determined by the bathymetry of the area. At least four separate outflow channels could be confirmed. The volumentric transport rates of three of them were calculated. These channels are the northerly near shelf branch (0.40 · 106 m3 sec-1), the main branch (1.39 · 106 m3 sec-1 in southwesterly direction, and an intermediate branch (0.24 · 106 m3 sec-l) found between both. In a static box model the progressive mixing of 0.95 · 106 m3 sec-1 pure Mediterranean Water with 1.97 · 106 m3 sec-1 North Atlantic Central Water is demonstrated.
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  • 6
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    A compilation of current, temperature and conductivity data from moorings F1 and F2 in the GATE-C-Area (1978)
    Bornträger
    Details
    Publication Date: 2022-06-23
    Description: Oceanographic measurements by groups from the Federal Republic of Germany contributed mainly to the C-Scale Experiment (centered at 9° N, 23° W) and the Equatoria1 Experiment. In this paper the data are presented that were obtained from the moorings F 1 and F 2 in the C-area. After a short discussion of instrument problems, data processing and statistical analysis, the data are presented graphically as time series, progressive vector diagrams, frequency distributions and spectra of horizontal kinetic energy and of temperature variance.
    Type: Article , PeerReviewed
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  • 7
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    JASIN 1978 - Field activities on the research vessels "Meteor" [M49], "Planet" and "Poseidon" [POS31] and the research aircraft D-CMET (1980)
    Bornträger
    Details
    Publication Date: 2022-06-24
    Description: The research programmes of the German groups in JASIN 1978 are summarized, comprising projects that concern the planetary boundary layer, the radiation budget, the oceanic mixed layer and thermocline and the trace element exchange. Lists of the participating scientists and technicians are included. Brief descriptions of the field activities on board the three ships and the aircraft are given, including maps and stations lists.
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  • 8
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    Moored current meter data from JASIN 1978 (1983)
    Bornträger
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    Publication Date: 2022-06-27
    Type: Article , PeerReviewed
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  • 9
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    Some current observations and surface T/S distribution from the Scotia Sea and the Bransfield Strait during early austral summer 1980/81 (1983)
    Bornträger
    Details
    Publication Date: 2022-06-28
    Description: Data from two current meter moorings and thermosa�linograph records from the Scotia Sea are presented. Results from the first mooring site demonstrate the ex�change of Antarctic Bottom Water between the northern Scotia Sea and the Argentine Basin. The sec�ond current data set illustrates the permanent deep counter current on the continental rise of the southern Drake Passage. Surface temperature and salinity rec�ords describe the position of the Polar Front and the Weddell-Scotia-Confluence during early austral sum�mer 1980/81.
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