Tidal and wind-driven parts of surface currents as measured by radar
H.-H. ESSEN, K.-W. GURGEL, F. SCHIRMER
Deutsche Hydrographische Zeitschrift 36, pp. 81...96, 1983.
Abstract - -
In December 1982, surface current measurements by means of an HF radar station
were carried out from the Federal German island of Sylt in the North Sea. Two
carrier frequencies (25.25 MHz and 29.85 MHz) were tested with respect to their
applicability. Hourly sampled 70-hours time series of (1-dimensonal) radial
currents at different distances and directions from the radar are analyzed with
the objective of determining the tidal and wind-driven parts. Assuming a
homogeneous current field, semidiurnal tidal ellipses are synthesized and
compared with currents, as documented in the "Atlas der Gezeitenströme
in der Deutschen Bucht" (Deutsches Hydrographisches Institut).
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