Abstract
The paper presents the analysis results of the impact of pollution discharged by surface waters on the quality of the Puck Bay waters. Puck Bay is part of the Gulf of Gdansk and belongs to the Baltic Sea. The analysis was carried out using mathematical modeling. A numerical model of part of the Gulf of Gdansk was achieved, taking into account the current bathymetry and the shoreline shape. The pollutants inflow was assumed point-by-point at the mouth of the main watercourses: Plutnica, Gizdepka, Bladzikowski Creek and the Reda River. The hydrodynamic conditions in the Bay were adopted for several scenarios regarding wind speed and direction. In order to determine the velocity distribution, the Ekman model—dedicated to shallow coastal waters—was used. The spread of pollutants in the Bay’s waters was determined by solving a two-dimensional, partial differential, advection–dispersion equation describing the migration of a non-degradable dissolved matter. The finite volume method was used for the solution. As a result, the extent of pollution in the Puck Bay area was obtained in relation to Natura 2000—the European Union’s protected areas. Visible is the necessity of integrating these conclusions into measure aiming at the mitigation of eutrophic processes in the Baltic Sea. The results of this research may be extended to serve other bay regions adjacent to similar substantial agricultural activities.
Highlights
IntroductionThe quality of coastal waters depends mainly on the pollution discharged along the tributaries of rivers (to a lesser extent surface runoff, secondary pollution resulting mainly from eutrophication and direct pollution—mainly oil and chemicals) (Clark 2001)
The quality of coastal waters depends mainly on the pollution discharged along the tributaries of rivers (Clark 2001)
The conducted research has shown that watercourses discharging water from areas adjacent to Puck Bay have a significant impact on the quality of its water and affect their
Summary
The quality of coastal waters depends mainly on the pollution discharged along the tributaries of rivers (to a lesser extent surface runoff, secondary pollution resulting mainly from eutrophication and direct pollution—mainly oil and chemicals) (Clark 2001). The genesis of these pollutants is usually associated with the runoff of rainwater from developed agricultural catchments. This may be the cause of eutrophication and water hypoxia. This requires the recognition of the problem
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More From: Euro-Mediterranean Journal for Environmental Integration
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