对大连湾湾口断面处3个站的海流和温度盐度剖面进行了周日同步观测,在此基础上,计算并讨论了大连湾口断面处的潮流和混合的分布特征。结果表明,大连湾湾口的潮流类型为非正规半日潮流,M2分潮流为其优势分潮流;大连湾口陡坡处的平均混合率较强,约为10-3m2/s,混合率的最大值约为10-2m2/s,是大洋混合率背景场的1 000倍,主要发生在上层和底层。潮流与地形的相互作用为混合提供了能量来源。 The synchronic observations of the current and temperature salinity profiles at three stations at the Wanwankou section of Dalian Bay were carried out. On this basis, the tidal current and mixing distribution characteristics at the Dalian bayou section were calculated and discussed. The results show that the tidal current at the mouth of the Gulf of Dalian is informal half-tidal and the M2 tidal current is its dominant tidal current. The average mixing rate at the steep slope of Dalian Bay is strong, about 10-3m2 / s. The maximum mixing rate is about 10-2m2 / s, which is 1000 times the background of the ocean mixed rate, mainly occurs in the upper and lower layers. The interaction of current and terrain provides a source of energy for mixing.