考虑海浪影响的渤海海冰演化规律的三维数值模拟研究

项目名称： 考虑海浪影响的渤海海冰演化规律的三维数值模拟研究

项目编号： No.51509177

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 其他

项目作者： 张娜

作者单位： 天津城建大学

项目金额： 20万元

中文摘要： 针对渤海海冰生消规律和特征建立准确可靠的数值模型是海冰高精度数值预报研究的基础。海浪对于冰缘区的生长消融、位置移动、断裂和浮冰尺寸分布具有显著的控制作用。但在现有的渤海海冰-海洋耦合的三维数值模拟系统中，动力因素中仅考虑了风和流，没有考虑海浪的影响，限制了对渤海海冰生消演化的预测能力。为此，本项目拟在研究冰-波作用机制的基础上，确定适合渤海的冰-波作用算法，并将该算法纳入冰-海耦合的三维数值模式中，建立考虑海浪影响的渤海海冰-海洋实时耦合的三维数学模型。在利用卫星遥感和实测资料验证模型合理的基础上，进一步模拟渤海及局地海冰的生消演化过程，揭示海浪因素对海冰生长、消融及运动的影响规律。通过开展本项目工作，可为海冰高精度数值预报研究提供新的思路，为环渤海冰灾防控提供科学依据。

中文关键词： 耦合模型；灾害预报；海冰；波浪

英文摘要： In the prediction of sea ice, it is a crucial step to build an accurate and reliable numerical model with the characters of sea ice evolution in the Bohai Sea. The ocean wave spectrum is the dominant factor controlling the growing, melting, moving, breakup and floe size distribution of sea ice in the marginal ice zone. However, current coupled ice-ocean three-dimensional models of the Bohai Sea do not account for ocean wave-sea ice interactions, and only the wind and the current are included in the dynamic factors, which constrains the forecast accuracy for sea ice evolution in the Bohai Sea. Therefore, based on the mechanism research on ice – wave interactions, this project will determine the algorithm that best fits for the Bohai Sea, and incorporate the algorithm to the three dimensional numerical ice-ocean model, and develop a three-dimensional ice-ocean real time coupled numerical simulation system of the Bohai Sea including the effect of waves. Satellite remote sensing and field investigation data are used to test and verify the model. Then we will simulate the evolution process of sea ice growing and melting for Bohai and local project area, and reveal the law how waves influence the growth, melting and movement of sea ice. This project will provide a new idea for the research of high-precision prediction of sea ice. Furthermore, the results of this project also provide a solid reference for the prevention of ice disaster in the Bohai Sea.

英文关键词： coupled model;disaster forecast;sea ice;wave