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2 1999

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Some results of research on internal waves in the Stolpe Sill area

Golenko N. N., Beszczyńska-Möller A., Piechura J., Walczowski W.

Oceanologia

1999

No. 41 (4)

537-551

Current, temperature and salinity data obtained on the western slope of the Stolpe Sill in October 1998 were analysed to identify the processes responsible for the transport of dense, near-bottom water from the Bornholm Deep into the Stolpe Channel. Westward transport in the deep layer was opposed to the wind direction. The longitudinal current component was considerably smaller than the latitudinal one. Long waves (with periods T > 10 h) and short-period oscillations (T < 2 h) were recorded in the form of wave trains. The rotary-component spectral method revealed a dominant internal wave with a period close to the local inertial period (T = 14.6 h). High-frequency current fluctuations (time scales 2-30 min) were regarded as a quasi-horizontal turbulence caused by interaction between the long waves and the complicated bottom topography.

Space-time characteristics of mesoscale structures in the North- East Gdańsk Bay

Golenko N. N., Paka W. T.

Biuletyn Instytutu Morskiego w Gdańsku

1999

Vol. 26, No. 1

47--55

Temporal and spatial variability of mesoscale structures in the North-East Gdańsk Bay is discussed. During measurements in September 1997, variability in the upper layer was determined by convective cooling processes. Measurements made in January 1998 show that between the two periods renewal of a whole halocline water took place in the Gdańsk Bay.