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  • Other Sources  (18)
  • Elsevier  (18)
  • 1970-1974  (16)
  • 1955-1959  (2)
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Year
  • 11
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    Observations of internal wave coherence in the deep ocean (1974)
    Elsevier
    In:  Deep Sea Research and Oceanographic Abstracts, 21 (8). pp. 597-610.
    Details
    Publication Date: 2016-09-22
    Description: An experiment is described which was aimed at testing assumptions and predictions of the internal wave model suggested by Garrett and Munk (1972). Two moorings were set at a depth of 2660 m with a horizontal separation of 920 m only. The results of current and temperature measurements on these moorings indicate that the field of motion is probably horizontally isotropic in the inertio-gravitational wave band. The limiting frequency for horizontal coherence is three times the frequency predicted by the theoretical model. The phase of the vertical coherence is stable over a wide frequency range and the coherence decreases towards higher frequencies. This may be due to coherent motion contaminated by uncorrelated noise at high frequencies. The results are basically in agreement with the theoretical model when taking a number of modes below 10.
    Type: Article , PeerReviewed
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  • 12
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    Natural regions of the oceans (1972)
    Elsevier
    In:  Geoforum, 3 (3). pp. 73-74.
    Details
    Publication Date: 2016-06-08
    Type: Article , PeerReviewed
    Format: text
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  • 13
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    On the temperature and salinity structure of the Mediterranean water in the Northeast Atlantic (1970)
    Elsevier
    In:  Deep Sea Research and Oceanographic Abstracts, 17 (3). pp. 627-631.
    Details
    Publication Date: 2016-05-13
    Description: Typical results of continuous temperature-salinity measurements from stations west of Gibraltar are presented. Special features of the structure of the Mediterranean Water in this area in relation to the corresponding turbulent mixing and salt-fingering process are discussed: the two maxima in the vertical profiles, the variation in time of small-scale phenomena, and the step-like structure at the lower boundary of the Mediterranean Water.
    Type: Article , PeerReviewed
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  • 14
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    Post-Palaeozoic stratigraphy of the eastern Agulhas Bank, South African continental margin (1973)
    Elsevier
    In:  Marine Geology, 15 (1). pp. 1-23.
    Details
    Publication Date: 2016-04-15
    Description: The Agulhas Bank, which forms the continental margin on the southern tip of Africa, consists of a thick Meso-Cainozoic sedimentary sequence (up to 6.2 km) resting on and behind pre-Mesozoic continental acoustic basement. The stratigraphy of this sequence is outlined and its history and facies variations mentioned where they are known. Refraction seismic velocity and bottom sample data indicate a basic three-fold subdivision of the Mesozoic sequence, which can be correlated with the onshore succession in the Algoa Basin. It is separated by a major hiatus from the Cainozoic sediments, which consist of a Palaeogene and Neogene sequence subdivided by another well-defined level of erosion. Various formations within the Cainozoic are defined and named. An outline of the bathymetry of the eastern Agulhas Bank is also given.
    Type: Article , PeerReviewed
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  • 15
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    Mesozoic palaeogeography of the Southern Cape, South Africa (1973)
    Elsevier
    In:  Palaeogeography, Palaeoclimatology, Palaeoecology, 13 (3). pp. 203-213.
    Details
    Publication Date: 2016-04-08
    Description: Four palaeogeographical reconstructions are presented for the southern Cape covering the period Late Permian to Late Cretaceous. This time spans the commencement to an advanced stage of breakup of Gondwanaland, during which the area moved from a mid-continental, high latitude, to an ocean-dominated, middle latitude position. These movements can be traced in facies changes and erosional cycles associated with the rift between West Gondwana and Antarctica (proto southwest Indian Ocean) and the later rift between South America and Africa (proto southeast Atlantic Ocean).
    Type: Article , PeerReviewed
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  • 16
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    Interaction of organic compounds with calcium carbonate-II. Organo-carbonate association in Recent sediments (1973)
    Elsevier
    In:  Geochimica et Cosmochimica Acta, 37 (11). pp. 2435-2447.
    Details
    Publication Date: 2016-02-29
    Description: Surface area measurements as well as organic carbon, nitrogen and phosphorus analyses on various grain size fractions of carbonate mud samples confirm that in natural environments of carbonate deposition, surface sorption processes take place which are similar to those described earlier for dissolved organics and artificially suspended calcite particles in both seawater and synthetic solutions. The specific surface area of the sediment increases from 1.8m2/g for the coarse-grained fraction to 12.5 m2/g for the fine material; likewise organic carbon, nitrogen and phosphorus increase with increasing surface area so that there are 1.20 mg C, 0.175 mg N and 0.06–0.20 mg P associated with every square meter of carbonate surface irrespective of the mineralogy of the sediment particles. It appears that the organic matter in these sediments is similar in composition, structure and quantity to the organic layers produced in sorption experiments. With their apparently defined structure and ubiquitous nature, these layers could determine the mineralogy and orientation of submarine carbonate cement or could even be a prerequisite to calcification in general.
    Type: Article , PeerReviewed
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  • 17
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    Spectral Analysis in Geophysics (1974)
    Elsevier
    In:  Amsterdam, Elsevier, vol. 8, pp. 415, (ISBN 0-471-95596-5)
    Details
    Publication Date: 1974
    Keywords: Textbook of geophysics ; Data analysis / ~ processing ; Spectral analysis ; Spectrum ; Seismology ; Seismics (controlled source seismology) ; Bath
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    BIBLIOGRAPHY SEISMOLOGY
  • 18
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    Global Tectonics and Earthquake Risk (1974)
    Elsevier
    In:  Amsterdam, London, New York, xiv+320 pp., Elsevier, vol. 5, no. 22, pp. 662-664, (ISBN 1-4020-1244-6)
    Details
    Publication Date: 1974
    Keywords: Earthquake risk ; Earthquake hazard ; Earthquake engineering, engineering seismology ; Seismicity ; Plate tectonics ; Tectonics ; Seismology
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    BIBLIOGRAPHY SEISMOLOGY
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