欢迎访问《渔业研究》官方网站,今天是 分享到:

渔业研究 ›› 2021, Vol. 43 ›› Issue (1): 28-41.DOI: 10.14012/j.cnki.fisc.2021.01.004

• 论文与报告 • 上一篇    下一篇

三沙湾盐田港海域潮流特征初步分析

林建伟,朱志煌   

  1. 福建省水产研究所
  • 收稿日期:2020-09-08 修回日期:2020-11-12 出版日期:2021-02-25 发布日期:2021-03-01
  • 通讯作者: 林建伟
  • 基金资助:
    福建省省属公益类科研院所基本科研专项(2019R1013-7)

Preliminary analysis of tidal current characteristics in Yantian Port sea area of Sansha Bay

  • Received:2020-09-08 Revised:2020-11-12 Online:2021-02-25 Published:2021-03-01
  • Contact: Jian-Wei LIN

摘要: 本文根据2015年12月在三沙湾盐田港海域获取的5个站位27 h连续定点海流同步观测资料进行准调和分析,计算了5个站位6个主要分潮O1、K1、M2、S2、M4、MS4的北、东分量潮流调和常数,并给出了各测站的各层潮流椭圆要素;同时,对同步观测潮汐特征进行分析。调查结果表明:三沙湾的潮汐和潮流类型属于正规半日潮;在观测海域,浅水分潮在总海流中占的份额很小,M2分潮流的椭圆率 值小于0.2,潮流主要呈N-S向往复式运动,落潮流速大于涨潮流速,最大可能流速介于113~135 cm/s之间,盐田港湾口流速较大,湾顶流速较小,流速总体上由表层至底层逐渐减小,流向较一致;余流流速整体上较小,一般小于8 cm/s,最小约为2 cm/s,层化结构不明显。

Abstract: Using the quasi-harmonic method, this paper anchored at the five stations in Yantian Port sea area of Sansha Bay for 27 hours in December, 2015 for study of the tidal current characteristics. The harmonic coefficients of the O1, K1, M2, S2, M4 and MS4 tidal current constituents were calculated for their north and east components. The tidal current elliptic factors were also computed. Meanwhile, the tidal type was analyzed. It was demonstrated that, the tidal and current type in Sansha Bay was regular semidiurnal tide, while the ratio of shallow water tidal current constituent to total current was very low. The ellipticity in absoluted value of M2 tidal was less than 0.2. The tidal current mainly presented in N-S reciprocating movement. The magnitude of ebb was larger than that of flood. The maximum possible flow velocity was between 113 cm/s and 135 cm/s, greater at the deep station and smaller at the low station. The velocity decreased gradually from surface to bottom generally. The residual current was generally small, less than 8 cm/s usually and the minimum was about 2 cm/s in the observed area, performing fuzzy lay phenomenon and circulation structure.

中图分类号: