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Horizontal and temporal variability of surface currents in the ``Lübecker Bucht``, as measured by radar.


H.-H. ESSEN, K.-W. GURGEL, F. SCHIRMER
Deutsche Hydrographische Zeitschrift 41, pp. 57...74, 1988 (erschienen 1989).
Abstract - - Surface currents, as measured by two land-based HF (high frequency) radar stations, are presented. The experiment was performed in the Luebecker Bucht (western Baltic Sea) from April 14 to 23, 1983. Maps of two-dimensional currents were obtained every 2h. The data processing is discussed with emphasis to a method allowing the determination of horizontal derivatives. Maps of the remotely measured current velocities are shown as well as time series, which are compared with data from current meters at different depths. The ratio of current-to-wind speed is determined for both horizontal components at different positions within the measuring area. Time series of divergence and curl are presented, and the magnitude of the linear (local) and nonlinear (advective) acceleration are compared.
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