【摘要】 北仑港虽然位于杭州湾口门南岸,但是本海区潮汐特性与杭州湾及浙江省其他海区明显不同。本文根据多次水文调查资料分析了本海区潮汐特性,认为造成这独特的特性不是由于这海区局部的地形而是浙江沿岸的潮波系统受到非潮汐力作用的结果。“源”于三门湾外的浙江沿岸潮波在向北传布时受到低频流的作用,削弱了M₂分潮的成分,形成浙江近海自南向北递减的M₂分潮系统,而全日分潮（O₁+K₁）则南北相似,因而造成本海区与其他海区不同的潮性比。北仑海区存在两股方向不同的涨潮流:即从穿山水道和螺头水道传来的东股涨潮流和从金塘岛西侧进入本海区的北股涨潮流,这是本海区地形造成的,它加剧了上述M₂分潮的衰变。更多还原

【Abstract】 Although the Beilun Port is at the south bank of the mouth of Hangzhou Bay, its tidal features are different from that in the bag and in other areas off Zhejiang Province.Based on the data from a number of hydrological surveys, the diffeiences are discussed. It is suggested that the unique features aic not resulted from the topographic feature of the area, but from the action of non-tidal force on the tidal wave system. The constal tidal waves originating off the Sanmcn Bay are effected by low-frequency flow in the course of moving northward, which weakens M2 component and forms a M2 component system decreasing from south to north, while the diurnal components （O1+K1） were almost the same off Zhejiang. There exist two flood currents with different directions resulted from the topography of this area, the east flood current from Cuanshan Channel and Luotou Channel and the north flood current from off the west of Jintang Island, which help to weaken the M₂ component.更多还原