Numerical Simulation of Microplastic Distribution and Transport in the Bohai Sea Based on OpenDrift Model
In the current study,the OpenDrift model was used to numerically simulate the distribution characteristics,transport patterns,and key driving forces of the floating microplastics in the Bohai Sea for different seasons.Comparison and validation with field observation data indicated that the numerical simulation results could effectively capture the spatial distribution characteristics of microplastic abundance in the Bohai Sea.Regarding distribution,the major accumulation areas for microplastics were identified in the majority of the Laizhou Bay,the northeast part of the Liaodong Bay,and the north-west part of the Bohai Bay.In the Liaodong Bay,the northern part of the Bohai Bay mouth,and offshore of the Yellow River estuary were recognized as significant aggregation zones for the floating microplastics.In the central Bohai Sea region,particle distribution was primarily influenced by ocean currents in spring and summer,by Stokes drift and wind in autumn,and by a combination of these three factors in winter.In the Bohai Bay and Bohai Strait areas,particles were strongly influ-enced by ocean currents.In the Laizhou Bay,particle distribution was mainly influenced by the Stokes drift and wind in win-ter and the ocean currents in summer,respectively.In spring and autumn,it was affected by a combination of all three fac-tors.In the Liaodong Bay,all driving forces had discernible impacts on the microplastic abundance distribution.
万方数据
维普
