Abstract
Spectral analysis of the climatic circulation in the upper 10 m layer of the Black Sea has been carried out. The current field was calculated from a three-dimensional baroclinic non-linear model. The mode composition of the circulation was derived. It is shown that the surface climatic circulation can be represented as the superposition of a finite number of ‘elementary’ currents of two types:n- andm-modes. Only 4n-modes are shown to be energy-dominant throughout the year. A relation is established between the different sources of energy supply of currents and the modes which assimilate this energy. Problems concerning the nature of the classical Black Sea currents such as the main Black Sea current (MBSC) and the Knipovich ‘spectacles’ are discussed. A ‘scenario’ of the field large-scale experiment is suggested which allows the reconstruction of the amplitudes of the first 10n- and the first 10m-modes from mooring data.
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Translated by Mikhail M. Trufanov.
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Eremeev, V.N., Ivanov, L.M., Kochergin, S.V. et al. Seasonal variability and the types of currents in the upper layer of the Black Sea. Soviet Journal of Physical Oceanography 3, 193–208 (1992). https://doi.org/10.1007/BF02197068
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DOI: https://doi.org/10.1007/BF02197068