Model analysis of the currents and wind waves in the Vistula Lagoon of the Baltic Sea

This paper considers the results of the numerical simulation of the steady currents and waves field structures in the Vistula Lagoon under constant wind forcing. The currents’ structure is essentially 3-dimensional. The direction of the near-shore drift is determined by the wind and shore orientation, but the currents involve two layers in the deeper part of the basin: the upper layer downwind current and the upwind compensative current in the underlying layer. The wind waves depend upon the wind speed, fetch, and depth until the wind speed is less than 6–8 m/s. As the wind increases, the fetch’s dependence disappears. The wind height depends only on the wind’s magnitude, and, under stormy conditions (when the wind’s speed exceeds 15 m/s), the waves are limited by the water depth alone.