| 摘要: |
| 应用非结构网格有限体积海洋模型对平潭竹屿湾水交换能力和溢油扩散开展了数值模拟。水交换能力计算表明，竹屿湾大部分水域水体半交换时间小于1.0 d，平均滞留时间约3.0 d左右，水体冲洗时间为15.0 d，水交换能力较强。48 h溢油扩散计算结果表明，油粒子扫海范围及运动路径与油粒子的释放时刻及风的作用紧密相关。静风条件下，溢油运动主要受当地潮流影响，呈南北往复运动。不利风作用下，竹屿水道的溢油可以扩散至平潭坛南湾、平潭草屿岛、塘屿岛及高山湾等海域，最远可到南日岛西北海域。 |
| 关键词: 物理海洋学 潮汐 FVCOM模型 水交换 溢油模拟 竹屿湾 |
| DOI：10.3969/J.ISSN.2095-4972.2021.02.013 |
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| 基金项目:福建省海洋经济发展补助资金资助项目（FJHJF-L-2019-8）；福建省平潭综合实验区蓝色海湾整治行动资助项目（2016年） |
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| Numerical simulation of water exchange and oil spill risk in Zhuyu Bay, Pingtan |
| ZHANG Zhen-wei,LIU Bi-jin,ZENG Yin-dong,ZHANG Shi-min |
| (School of Civil Engineering and Architecture, Xiamen University of Technology， Xiamen 361024, China;Fujian Marine Forecasts, Fuzhou 350503, China;Xiamen Marine Environmental Monitoring Central Station, SOA, Xiamen 361008, China) |
| Abstract: |
| An unstructured mesh finite volume oceanic model is used to simulate the water exchange capacity and oil spill in Zhuyu Bay of Pingtan. The results show that the halflife time of most waters in Zhuyu Bay is less than 1 day. The average residence time is about 3 days and the water body flushing time is about 15 days. It shows that the water exchange capacity in the bay is strong. The spatial distributions of particle trajectories affer oil spill over 48 h show that the oil particle sweeping range and trajectories are closely related to the oil release time and the action of wind. Under calm wind conditions, the oil spill route is mainly affected by local tidal currents showing a southnorth reciprocating motion. Under the adverse wind conditions, the oil particles can spread to Tannan Bay, Caoyu Island, Tangyu Island and Gaoshan Bay of Pingtan and as far as to the northwest of Nanri Island. |
| Key words: physical oceanography tide FVCOM model water exchange capacity oil spill simulation Zhuyu Bay |
