辽东湾冰期海洋热通量的确定与分析

Determination and Analysis of Oceanic Heat Flux Under Sea Ice Cover in the Liaodong Bay

首先讨论了海洋热通量的计算方法，并利用辽东湾ＪＺ２０－２海域定点观测的气象、水文和海冰数据，对１９９７～１９９８年度的海洋热通量进行了数值计算。结果表明，其值在初冰期最大，可达２００Ｗｍ－２以上，然后随着冰期的延长而逐渐减小，在融冰期接近于０。最后，讨论了气象和水文条件、海冰厚度和类型等因素对海洋热通量的影响。本文首次对辽东湾冰期的海洋热通量进行了确定，并得到了其在整个冰期内的变化规律。

The calculative method of oceanic heat flux is discussed firstly, and the oceanic heat flux in the winter of 1997/1998 is calculated with the metoerological, oceanographic data and sea ice conditions observed on the JZ20-2 oil/gas platform in the Liaodong Bay. From the results, we can see that the value of the oceanic heat flux is more than 200 Wm-2 at the beginning of the freezing period, and then decreases continuously until it approaches 0 at the end of the winter. At last, the influence of season, meteorological and hydrological conditions, ice thickness and sea ice type on the oceanic heat flux are discussed. The oceanic heat flux in the Bobai Sea is calculated for the first time, and its trend in the whole winter is obtained.