天津大港滨海湿地溢油漂移扩散数值模拟研究  

Numerical simulation study of oil spilling drift and diffusion in Dagang coastal wetland of Tianjin

作　　者：吴亚楠[1] 武贺[1] 张松[1] 汪小勇[1] 缴建华[2] 李彤[2] 白明[2] 

机构地区：[1]国家海洋技术中心,天津300111 [2]农业部渔业环境及水产品质量监督检验测试中心,天津300221

出　　处：《海洋通报》2016年第5期579-586,共8页Marine Science Bulletin

基　　金：基金项目:天津大港滨海湿地海洋特别保护区生境评价与海洋生物资源适应性研究(KJXH2014-21)

摘　　要：利用MIKE-HD建立二维水动力模型,模拟分析夏季天津大港滨海湿地附近海域水动力特性,采用实测潮位、潮流数据对模拟计算结果进行验证。在获得水动力数据的基础上,针对南港工业区船舶通航量加大的趋势,利用MIKE-SA模块建立溢油扩散模型,对溢油事故进行预测。结果表明,在风、潮的综合影响下,低潮时刻溢油24 h后的扩散面积比高潮时刻大,其中SW常风情况下其扩散面积最大,达72.04 km2;当风向与潮流方向一致时,即本文中低潮时刻溢油,油膜中心运动速度最大,扩散面积也最大。A 2-D hydrodynamic model was established using MIKE-HD to simulate hydrodynamic properties in Dagang coastal wetland of Tianjin at summer. The numerical results were verified by measured data. According to the obtained hydrodynamic data, MIKE-SA modelwas established to predict the environmental influence, which was induced by oil spilling accidents under the background of the increasing shipping around Nangang Industrial Zone. Results showed that both wind and tide had great effect on the prediction of oil spill trajectories, and after spilling for 24 h, the diffusion area at low tide was larger than that at high tide. Under the effect of SW wind, the direction of prevailing wind, the diffusion area became72.04 km^2, which was the largest one. While the wind direction was same as the tidal current direction and the oil spilling was at the low tide, the center of oil slick had the largest speed, hence, the diffusion area was largest.

关 键 词：天津大港滨海湿地 水动力 溢油 扩散 

分 类 号：X55[环境科学与工程—环境工程]