Abstract
In this paper, the numerical hydrodynamic simulation has been carried out by using measured topographic data and related tidal information. The oil particle tracking module of MIKE21 is adopted to study the processes of drifting and turbulent diffusion of oil particles on the water surface, where four working conditions, namely, static wind, dominant wind direction, maximum wind direction and most unfavourable wind direction, are applied. Results show that Xiushan Island will be the apparent ‘victim’ in the cases of oil spill in all wind directions. Meanwhile, due to the existence of Changbai Island and Xiushan Island, the diffusion process of oil particles is obviously retarded to impact the protected marine areas.
Highlights
With the increase of oil tanker terminals along the coast of Zhoushan, the risk of oil spill arises
From previous literature [2], it is found that accidental oil spills from harbor ships in Zhoushan ocean areas are mainly caused by reefing and ship collisions in bad weather
At 13:00 and 14:00 of the same day, the tide was high and the particles started to move in the opposite direction, so that nearly half of the whole Xiushan Island coastline would be polluted by the oil spill, while the coastline north of Dinghai District was less affected at this time
Summary
With the increase of oil tanker terminals along the coast of Zhoushan, the risk of oil spill arises. The process of oil spill diffusion is complicated, and it causes serious impact on various sensitive points of the island to a great extent, especially the culture function areas. The channel narrower [1][2], and accidental oil spills are more likely to occur. Our research team conducts a very necessary simulation of oil spill risk in the area of the tanker terminal to explore the oil film drift pattern, spatial and temporal distribution, as well as the degree of impact on each sensitive area, so as to provide a scientific basis for improving the timeliness and accuracy of the emergency decision when the risk occurs in order to reduce the impact of oil spills
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