渤海冰漂移对海面风场、潮流场的响应  

Sea ice drifts in response to winds and tide in the Bohai Sea

作　　者：吴龙涛[1] 吴辉碇[2] 李万彪[1] 刘钦政[2] 张蕴斐[2] 刘煜[2] 白珊[2] 

机构地区：[1]北京大学物理学院大气科学系,北京100871 [2]国家海洋环境预报中心,北京100081

出　　处：《海洋学报》2005年第5期15-21,共7页

基　　金："HY-1卫星资料在海冰预报中的业务应用"项目;国家自然科学基金项目(40233032;40376006);十五国家科技项目(2001BH603B-03;2001CB711006;2001DIA50040);"863"项目(2202AA639340).

摘　　要：在对海冰漂移动力学分析基础上,利用MODIS资料,采用MCC方法获取渤海大范围冰覆盖的海域冰速场,并利用NCEP风速资料和潮流资料进行回归分析,得到渤海冰漂移速度与风速和流速的关系.利用MODIS和NOAA/AVHRR资料获取的渤海冰速资料的综合分析显示:渤海海冰运动,除受盛行风控制外,还受到复杂的海岸地形、流和冰内应力的共同作用,所得到的大范围海冰运动规律和多年历史观测资料分析结果基本一致,并清楚地显示了冰边缘带海冰运动的特征,弥补了局地、单站海冰观测的局限性.On the Basis of the dynamic analyses of the sea ice motion, the ice velocity is extracted from MODIS images by the MCC method for the Bohai Sea. The dependence of the ice velocity on wind and current is estimated by using regression analysis. From the sea ice motion data extracted from the MODIS and AVHRR images, it is found that the sea ice motion in the Bohai Sea is effected not only by prevailing winds but also by topographic steering, ocean currents and internal ice stresses. The extracted sea ice drift is similar to observed ice drift, and can clearly show the sea ice drift in the Marginal Ice Zone especially. It can compensate for the limitation of the local or single station observation.

关 键 词：冰漂移 风力系数 卫星遥感 MODIS MCC 渤海 

分 类 号：P7[天文地球—海洋科学]