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  • 1
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    Internal wave kinematics in the upper tropical Atlantic (1980)
    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26 (Suppl. 1). pp. 161-189.
    Details
    Publication Date: 2020-08-04
    Description: Horizontal velocity and temperature measurements observed from a two-dimensional array of moored instruments, mooring Fl, are analysed to describe the near-surface internal wave field in the GATE (GARP Atlantic Tropical Experiment) C-scale area. Spectral properties indicate strong deviations from the Garrett and Munk (1972, 1975) deep ocean internal wave models. The frequency spectrum in the upper pycnocline is dominated by three energetic bands centered at 0.0127 (inertial frequency), 0.08 (M2-tidal frequency) and 3 cph. The latter frequency band does not correspond to the local Brunt Väisälä frequency (〈 10 cph) and contains about one half of the total internal wave energy of fluctuations with periods less than 10 hours. Cross-spectral analysis of the high frequency internal waves yields corresponding wavelengths of order 1 km consistent with westward propagating first mode wave groups, if the effect of Doppler shift due to a strong mean current is taken into account
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/B978-1-4832-8366-1.50014-5
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
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    Wind-driven inertial waves observed during Phase III of GATE (1980)
    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26A (Suppl. 1). pp. 217-224.
    Details
    Publication Date: 2020-08-04
    Description: Current and wind stress time series obtained from the F1-mooring are analysed with the aim of examining linear correspondences and testing the adequacy of linear coupling models at near-inertial frequencies. Significant linear correlations are found in the data set which are consistent with a linear winddriven model of the current system. The current in the mixed layer can be described by inertial oscillations directly forced by the local wind stress. A wind-driven simulation model of the mixed layer currents yields an energy input of 3.10-3 W/m2. The current in the thermocline can be described by a linear internal wave field of downward propagating wave groups driven via Ekman suction by the wind stress field. Internal waves are generated at a rate of 10-3 W/m2, consistently estimated from both kinematic and dynamic considerations.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/B978-1-4832-8366-1.50015-7
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Horizontal Advection of Temperature in the Seasonal Thermocline during JASIN 1978 (1980)
    AMS (American Meteorological Society)
    In:  Journal of Physical Oceanography, 10 (10). pp. 1686-1690.
    Details
    Publication Date: 2016-05-10
    Description: The temporal changes in the low-frequency thermal structure during a two-week period in August-September 1978 are discussed from moored data collected during the JASIN experiment. While some changes in the thermal structure appear to be related to local winds, the dominant low-frequency variability in the seasonal thermocline can be explained as horizontal advection of a spatially varying temperature field, and associated thermal wind, by geostrophic currents with little vertical motion or mixing required.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1175/1520-0485(1980)010〈1686:HAOTIT〉2.0.CO;2
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    A note on near-surface VACM measurements made from three different kinds of surface moorings (1980)
    Pergamon Press
    In:  Deep Sea Research Part A: Oceanographic Research Papers, 26A (Suppl. 1). pp. 217-224.
    Details
    Publication Date: 2020-08-04
    Description: During a multi-institutional air-sea interaction experiment (GATE) in the central Atlantic North Equatorial Countercurrent in September 1974, vector-averaging current meter (VACM) measurements were made within the 30-m thick mixed layer from three different types of surface moorings. The moorings consisted of a single-point taut-line flexible mooring (E3), a spar-buoy (El), and a 2-legged mooring (Fl). Although the kinetic energy density spectral estimates of the E3, El, and Fl records in the low frequency range were equivalent with 95% confidence, the mean progressive vector diagrams differed by 6 % in length and 4 in direction. At frequencies above 1 cph the variances of the 7.2 m Fl current vectors were about 1.5 times larger than the 7.6 m E3 data and the spectral levels of the 20 m El and 21.4 m E3 record were equivalent, suggesting that VACM current vectors recorded near the surface beneath a surface-following buoy do not contain detectable amounts of aliased high-frequency mooring motion.
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 5
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    Zur Winderzeugung barokliner Trägheits- und Rossbywellen in linearen Modellen unter Berücksichtigung des vertikalen Impulsflusses (1983)
    In:  (Professorial dissertation), Christian-Albrechts-Universität Kiel, Kiel, Germany, 107 pp
    Details
    Publication Date: 2017-02-17
    Type: Thesis , NonPeerReviewed
    Format: text
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    OceanRep: Thesis - not published by a publisher
  • 6
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    Bericht des Fahrtleiters "Poseidon"-Reise Nr. 86, Abschnitte 1 und 2, 15.3.1982 bis 15.4.1982 [POS86] (1982)
    Institut für Meereskunde an der Universität Kiel, Theoretische Ozeanographie
    In:  Institut für Meereskunde an der Universität Kiel, Theoretische Ozeanographie, Kiel, 27 pp.
    Details
    Publication Date: 2015-10-02
    Description: Das Teilprojekt C2 des SFB 133 "Warmwassersphäre des Atlantiks" untersucht die mesoskalige Variabilität des Dichte- und Strömungsfeldes im Kanarenbecken. Im Vordergrund der diesjährigen Untersuchungen steht die Frage, in welchem Masse die Zirkulation im Tiefenbereich bis etwa 1500 m durch hydrographische Messungen erfasst werden kann und mit direkten Strömungsmessungen aus verankerten Meßsystemen bzw. aus satelliten-georteten Driftbojen in Einklang zu bringen ist. Da eine quasi-synoptische Aufnahme eines grösseren Areals bisher noch nicht zur Verfügung steht, sollte FS "Poseidon" während der Expedition "KANARENBECKEN 1982" die hydrographische Vermessung eines etwa 200 x 200 sm grossen Gebietes vornehmen, in dem die mesoskalige Aktivität besonders gross war. Meridionale Schnitte während der "METEOR"-Reise 56 (Abschnitt 5, Rückreise Antarktis) hatten gezeigt, daß im Bereich um 33°N, 22°W, im Frühjahr ein System von Temperatur-Salzgehaltsfronten vorhanden ist. Es lag nahe, daß diese Fronten mit starken Oberflächenströmungen verbunden waren. Daher wurde der Einsatz von 4 satellitengeorteten Driftbojen mit Segel in 100 m Tiefe vorgesehen, die bereits 14 Tage vor dem Beginn des Experiments durch FS "METEOR" ausgelegt werden sollten.
    Type: Report , NonPeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Report - Cruise Report
  • 7
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    CTD-data from the North Canary basin : "Poseidon" cruise 86,2 [POS86/2], 26 March - 13 April, 1982 (1982)
    Institut für Meereskunde Kiel
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 103 (90). Institut für Meereskunde Kiel, Kiel, Germany, 130 pp.
    Details
    Publication Date: 2014-12-12
    Type: Report , NonPeerReviewed
    Format: text
    DOI: 10.3289/ifm_ber_103
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    OceanRep: Report - other report
  • 8
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    Objective analysis of hydrographic data sets from mesoscale surveys (1983)
    Institut für Meereskunde an der Universität Kiel
    In:  Berichte aus dem Institut für Meereskunde an der Christian-Albrechts-Universität Kiel, 116 . Institut für Meereskunde an der Universität Kiel, Kiel, Germany, 78 pp.
    Details
    Publication Date: 2017-01-10
    Type: Report , NonPeerReviewed
    Format: text
    DOI: 10.3289/ifm_ber_116
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    OceanRep: Report - other report
  • 9
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    Meandering of the subtropical front south-east of the Azores (1982)
    Nature Publishing Group
    In:  Nature, 300 (5889). pp. 245-246.
    Details
    Publication Date: 2018-03-08
    Description: A subtropical front was observed in the area south and southeast of the Azores during cruises of FS Meteor and FS Poseidon in early 1982. The front has a basically west–east extension, with considerable meandering observed. Meso-scale eddies are found on both sides. The overall flow pattern corresponds to earlier results on geopotential differences in the upper northeast Atlantic, but the baroclinic transport of the order of 107 m3 s−1 is found to be concentrated in a 60-km wide jet. We suggest here that the current band is part of the gyre circulation, resulting from a branching of the North Atlantic Current.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1038/300245a0
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 10
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    Moored current meter data from JASIN 1978 (1983)
    Bornträger
    Details
    Publication Date: 2022-06-27
    Type: Article , PeerReviewed
    Format: text
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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