CSIR-National Institute of Oceanography, Dona Paula 403 004, Goa, India.
CSIR-National Institute of Oceanography, Dona Paula 403 004, Goa, India.
Mar Pollut Bull. 2021 Nov;172:112892. doi: 10.1016/j.marpolbul.2021.112892. Epub 2021 Aug 27.
This study aims at assessing the fate of MV Wakashio oil spill, and the driving forces responsible for possible environmental consequences of polluted coastal region. GNOME simulations were performed, considering various meteo-oceanographic forcings such as (i) winds and currents, (ii) only winds, and (iii) only winds with different diffusion coefficients, and validated with the satellite images. The results revealed that the simulations performed with 'only winds' reasonably match with the satellite observations, indicating that winds are the primary driving forces. The conducive stokes drift is an added contribution to the predominant northwestward drift of the spill. The oil budget analysis suggests that beaching and evaporation together accounted for a significant portion of the spilled oil (1000 tons), in which ~60% of the oil was accounted only for beaching. Our results depict that the diffusion coefficient of 100,000 cm/s and 3% windages are optimal for oil-spill simulations off the southeastern Mauritius coast.
本研究旨在评估 MV Wakashio 溢油事件的命运，以及污染沿海地区可能产生环境后果的驱动因素。我们进行了 GNOME 模拟，考虑了各种气象海洋强迫因素，如（i）风和流，（ii）仅风和（iii）仅风但具有不同的扩散系数，并通过卫星图像进行了验证。结果表明，仅用风进行的模拟与卫星观测相当吻合，表明风是主要的驱动因素。有利的斯托克斯漂移是溢油主要向西北漂移的附加贡献。油预算分析表明，搁浅和蒸发共同导致了大量溢油（1000 吨），其中约 60%的油仅因搁浅而损失。我们的结果表明，在毛里求斯东南部海岸进行溢油模拟时，扩散系数为 100,000 cm/s 和 3%风偏差是最优的。
