辽东湾东部秋季海流特征的同步观测研究

基于辽东湾东部秋季7个站点的同步实测海流资料，通过调和分析方法计算了该海域的潮流和余流，并对其进行了分析和比较。结果表明:（1）M₂分潮流是辽东湾东部的优势分潮流，其最大流速介于35.8~69.8 cm/s之间，M₂和K₁分潮流长轴方向基本与岸线走向一致。（2）研究海域北部潮流呈现显著的规则半日潮流性质，中部和南部主要呈现不规则半日潮流特征。研究海域北部和金普湾口南部属于强潮流区，金普湾口北部和中部潮流较弱，各站点最大可能潮流流向大致平行于岸线。（3）辽东湾东部海域余流整体较弱，且呈现沿海岸线向南运移的特征，因此对污染物的长期输运效应不可忽视。

Study on the current characteristics in the eastern area of Liaodong bay in autumn based on synchronous observations

Based on the synchronous observed current data of seven stations in the east side of Liaodong bay in autumn, we analyzed and compared the characteristics of tidal and residual current by means of harmonic analysis.The results showed that:(1)The dominant tidal current constituent was M₂ with the maximum speed ranging from 35.8 cm/s to 69.8 cm/s, and the major axis directions of M₂ and K₁ tidal current were basically consistent with the shoreline.(2)The regular semi-diurnal tidal current in the north of Liaodong bay was obvious, while it was mainly irregular in the central and south of Liaodong bay.The north part of Liaodong bay and the south part of Jinpu bay mouth belong to the strong tidal zone, while the tidal current in the north and middle parts of Jinpu bay mouth were relatively weak.Furthermore, the directions of maximum possible tidal current were parallel to the coastline approximately.(3)The residual current was weak in the eastern area of Liaodong bay, and was characterized by the southward migration along the coastal line, therefore the long-term transport effects of pollutants could not be ignored.