Fondazione CMCC - Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy.
Fondazione CMCC - Centro Euro-Mediterraneo sui Cambiamenti Climatici, Lecce, Italy.
Mar Pollut Bull. 2018 Apr;129(1):151-162. doi: 10.1016/j.marpolbul.2018.02.019. Epub 2018 Feb 20.
Drift of floating debris is studied with a 2D Lagrangian model with stochastic beaching and sedimentation of plastics. An ensemble of >10 virtual particles is tracked from anthropogenic sources (coastal human populations, rivers, shipping lanes) to environmental destinations (sea surface, coastlines, seabed). Daily analyses of ocean currents and waves provided by CMEMS at a horizontal resolution of 1/16° are used to force the plastics. High spatio-temporal variability in sea-surface plastic concentrations without any stable long-term accumulations is found. Substantial accumulation of plastics is detected on coastlines and the sea bottom. The most contaminated areas are in the Cilician subbasin, Catalan Sea, and near the Po River Delta. Also, highly polluted local patches in the vicinity of sources with limited circulation are identified. An inverse problem solution, used to quantify the origins of plastics, shows that plastic pollution of every Mediterranean country is caused primarily by its own terrestrial sources.
利用二维拉格朗日模型和塑料随机冲滩与沉积，研究了漂浮碎片的漂移。从人为源（沿海人口、河流、航道）到环境汇（海面、海岸线、海底），追踪了 >10 个虚拟粒子的集合。利用 CMEMS 以 1/16°的水平分辨率提供的每日海洋流和波浪分析来驱动塑料。发现海面塑料浓度的时空变化很大，但没有任何稳定的长期积累。在海岸线和海底检测到大量塑料的积累。污染最严重的地区位于西里西亚次盆地、加泰罗尼亚海和波河三角洲附近。此外，还确定了在来源附近有限循环的局部高污染斑块。用于量化塑料来源的反问题解决方案表明，每个地中海国家的塑料污染主要是由其自身的陆地来源造成的。
