Observations of internal tides in Uchiura Bay |
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| Authors: | Masaji Matsuyama Toshihiko Teramoto |
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| Institution: | (1) Tokyo University of Fisheries, Minato-ku, 108 Tokyo, Japan;(2) Ocean Research Institute, University of Tokyo, Nakano-ku, 164 Tokyo, Japan |
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| Abstract: | Remarkable tidal currents associated with temperature fluctuations in the subsurface layer have been observed in Uchiura Bay. In order to study the characteristics of these tidal currents, we carried out current measurements in November 1972 and October 1974. It was confirmed from the first set of observations in 1972 that the tidal currents above and below the seasonal thermocline oscillate out of phase with each other and the tidal currents are associated with internal tides.In the second set of observations in 1974 not only current measurements but also serial BT lowerings were made. The phase of the thermocline displacements lagged behind the tidal currents by 81 for the semidiurnal constituent and by 83 for the diurnal constituent, and it is thus concluded that the internal tides in Uchiura Bay behave as standing waves. |
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