Numerical study of oil spilled behavior under ice-covered area

The Recent demands of commercial shipping through the Arctic and exploit of natural resources increase the risk of an oil spill in the Arctic Ocean. State-of-the-art modeling techniques are necessary for prevention measures and oil response and determine the fate and effect of oil in the environments. So we developed a numerical simulation model for spilled oil forecasting under ice-covered areas. This simulation model can perform high-resolution computations at low computational cost. Numerical model results of oil spreading over open water, under fully ice-covered water, and under a broken ice field are agreed reasonably well with the previous experimental results. Results of oil spilled behavior under the ice-covered area in the East Siberian Sea have shown the possibility of establishing an accurate and practical forecast system for oil spreading under a marginal ice covers.近年来，北极地区商业通航需求与自然资源开发活动持续攀升，进一步加剧了北冰洋发生溢油事故的风险。为制定溢油防控措施、开展应急响应，以及研判石油在环境中的归趋与影响，亟需采用当前最先进的建模技术。据此，我们研发了一款适用于冰覆盖海域的溢油预报数值模拟模型。该模型可在较低计算开销下完成高分辨率数值模拟计算。该模型在开阔水域、全冰覆盖水域以及碎冰区三类场景下的溢油扩散模拟结果，与此前的实验数据吻合度良好。针对东西伯利亚海冰覆盖海域的溢油行为模拟结果显示，我们有望构建一套适用于边缘冰区的高精度、实用性强的溢油扩散预报系统。