Analysis of the Water Level Variation in the Polish Part of the Vistula Lagoon (Baltic Sea) and Estimation of Water Inflow and Outflow Transport through the Strait of Baltiysk in the Years 2008–2017

The Vistula Lagoon is located in both Poland and Russia along the southern coast of Baltic Sea. It connected to Sea Russian part by Strait Baltiysk. purpose paper identify dominant factors underlying water level variation mechanism at Tolkmicko Lagoon, revealed a statistical analysis measured data discussion on inflow outflow transport through strait, estimated numerical modeling. Seawater exceptionally valuable terms hydrological balance lagoon. Historical research hydrology lagoon shows that exchange quite complex due presence several different sources balance, such as seawater inflow, river groundwater precipitation, evaporation. Unfortunately, there are no current Baltiysk lack continuous flow measurements strait. A novelty work an in-depth Polish over long time period estimation use model. model reproduces well responding variations sea outside wind action years 2008–2017 were chosen period. two-dimensional free surface shallow was adapted simulate view one open boundary. Finally, it concluded side dominated two factors: Gulf Gdańsk average annual marine into be equal 15.87 km3.