Modeling the spatiotemporal distribution of microplastics in Kavala Gulf
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2023-10-11 18:28
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574:551.46 (3)
Ecologie generală şi biodiversitate (764)
Geomorfologie. Studiul formelor de relief ale pământului (117)
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ANASTASIOU, Sotiria, SYLAIOS, Georgios. Modeling the spatiotemporal distribution of microplastics in Kavala Gulf. In: Environmental Toxicants in Freshwater and Marine Ecosystems in the Black Sea Basin: BSB27-MONITOX, 8-11 septembrie 2020, Kavala. Kavala, Greece: International Hellenic University,, 2020, pp. 39-40.
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Environmental Toxicants in Freshwater and Marine Ecosystems in the Black Sea Basin 2020
Conferința "Environmental Toxicants in Freshwater and Marine Ecosystems in the Black Sea Basin"
Kavala, Grecia, 8-11 septembrie 2020

Modeling the spatiotemporal distribution of microplastics in Kavala Gulf

CZU: 574:551.46

Pag. 39-40

Anastasiou Sotiria, Sylaios Georgios
 
Democritus University of Thrace
 
Disponibil în IBN: 3 decembrie 2020


Rezumat

Microplastics, their sources, loads and distribution in the marine environment are important topics in current marine research. In this work, a three-dimensional hydrodynamic numerical model was implemented to assess the dispersion and distribution of microplastics in Kavala Gulf. The two wastewater treatment plants (WWTP) of Kavala and Palio were considered as the main sources and inflow data in terms of wastewater discharge and microplastics concentration were provided by DEAYAK. The simulation had a duration of a year, taking into account the seasonal variability in the circulation pattern, the meteorological forcing and the operational parameters of both WWTPs. Results showed that the contribution of Kavala’s WWTP is at least one order of magnitude higher than that of Palio, for the entire year, with the exception of touristic months (June and July). In winter, the higher microplastic concentrations are simulated in Kavala main port and in the nearby coastal zone, due to the influence of eastern and northeastern winds keeping the plume attached to the coastline of the western Kavala Gulf. From early spring to early summer, north and northeastern winds transport the plumes as far as Keramoti. In the same time period the plumes from both WWTPs contribute to increase significantly the microplastics concentration in the small gulf of Palio where the most popular beaches are situated. In autumn, as a result of the impact of southern and western winds and the established anticyclonic circulation, the microplastics in the upper layers of the water column tend to disperse periodically towards the central part of the gulf. As a conclusion, it seems that the dispersion of the microplastics inside the study area appears effected by the surface hydrodynamic circulation and presents a distinct seasonality that follows the wind climate pattern in the area.