淡水结冰,这是司空见惯的事情,但海水结冰,就很少能有人看到。每年12月份,在我国黄海和渤海部分海域,就有大面积的海冰形成。海水大面积封冻,直接影响我国的经济建设。上个世纪,黄、渤海分别于1937年、1969年和2000年底发生过三次大封冻,而且尤以1969年封冻最为严重。那次整个渤海湾几乎成了一个完整的大冰盘,海上堆积冰最厚处达两米。进出天津港口的123艘轮船中,有37艘被海冰封冻、搁 Freshwater icing is something that is commonplace. However, when seawater is frozen, people rarely see it. Every December, there is a large area of ​​sea ice formation in parts of China’s Yellow Sea and Bohai Sea. Large areas of seawater frozen directly affect China’s economic construction. In the last century, Huang and Bohai had three major freezes in 1937, 1969, and the end of 2000, and they were frozen most severely in 1969. At that time, the entire Bohai Bay had almost become a complete ice tray. The thickest ice on the sea reached two meters. Of the 123 ships that entered and exited the Tianjin port, 37 were frozen by sea ice and put on ice.