【摘要】 <正> 象山港位于浙江省镇海县梅山岛与象山县钱仓之间,是一个东北——西南方面狭长的半封闭式港湾。它通过青龙门、双屿门和牛鼻山等诸水道与外海相连(图1)。从港口到港底全长约60公里,港内多数地区的宽度为5至6公里,平均水深10米左右。入港河川溪流很多,遍布沿岸各处。全港集水面积约为1445平方公里,年平均迳流量为12.89亿立米。象山港总面积约630平方公里,其中低潮位时的水域面积为410平方公里,滩地面积为220平方公里,港内滩地约占总面积的34.9％。更多还原

【Abstract】 Based on the data obtained from the surveys from 1981 through 1983, this paper discusses the features of the tide, and tidal currents in the Xi-angshan Harbour as well as their cause of formation. The analysis shows that there exists a resonance of quarter-diurnal constituents there and that one of the important reasons why the depth of water in some natural ports along the coast of Zhejiang and Fujian provinces remains steady is that the duration of the flood is longer than that of the ebb while the speed of the flood is less than that of the ebb.The cause of formation for these features is that there exists co-oscillation of shallow water constituents and shoaling effects in the Xiangshan Harbour.更多还原