Abstract
WITH the first issue of the Deutsche Hydrographische Zeitschrift (1, No. 1, January, 1948), to the forth-coming appearance of which reference was made in Nature of August 16, 1947, p. 219, the publication of post-war articles by German oceanographers and other marine scientists and technicians commences. The first paper, by K. Kalle, deals with the problem of marine production and reviews research material and methods of investigation. Kalle compares the probable amount of marine production with the yields known from continental soils of the temperate zones. W. Hansen in the second article gives a general mathematical treatment of the oscillations of inertia in open and land-locked seas. The old nautical problem of the dip of the horizon is attacked once more theoretically, by H. Chr. Freiesleben. He derives a formula which, in order to be strictly employed, demands measurements of the air-temperature at the horizon immediately above the sea-surface. Another short but interesting contribution, by F. Errulat, describes a series of measurements of the earth-magnetic field on the Dacia Bank (between Madeira and Morocco) ; he concludes that the Bank has a core of eruptive rocks. The field of nautical technique is represented by a description of a direction-holder named "Polkreisel", by P. Christoph. Moreover, there is an article on the German Hydrographic Institute, its origin, its tasks, and its organisation by the director, Dr. Böhnecke, and finally there are obituary notes on several notable German scientists who had worked on nautical science and on oceanography. In the next issue (No. 2/3) of the Zeitschrift, which was expected to be distributed in the beginning of August 1948, there is to be (with other papers) articles on the bottom geology of the southern and middle Baltic, on a fundamental geodetic problem in sea-surveying, on magnetic storms, and on resonance oscillations of bights and the mouth correction for seiches.
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New German Hydrographic Journal. Nature 162, 364 (1948). https://doi.org/10.1038/162364c0
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DOI: https://doi.org/10.1038/162364c0