海洋学研究 ›› 2020, Vol. 38 ›› Issue (3): 31-47.DOI: 10.3969/j.issn.1001-909X.2020.03.004

• 研究论文 • 上一篇    下一篇

大亚湾和大鹏湾两个相邻海湾潮波浅水变形的异同分析

李嵩1,2,3, 管卫兵*1,2,3,4, 曹振轶1,2, 何天祺1,2, 杨昀1,2   

  1. 1.卫星海洋环境动力学国家重点实验室,浙江 杭州 310012;
    2.自然资源部 第二海洋研究所,浙江 杭州 310012;
    3.上海交通大学 海洋学院,上海 200240;
    4.南方海洋科学与工程广东省实验室(珠海),广东 珠海 519080
  • 收稿日期:2020-05-27 发布日期:2020-09-15
  • 通讯作者: *管卫兵(1968-),男,研究员,主要从事海洋动力学方面的研究。E-mail:gwb@sio.org.cn
  • 作者简介:李嵩(1995-),男,辽宁省盘锦市人,主要从事海洋动力模拟方面的研究。E-mail:leo.songli@qq.com
  • 基金资助:
    国家重点研发计划项目(2017YFC1404200);国家自然科学基金重点项目(41830540);卫星海洋环境动力学国家重点实验室自主项目(SOEDZZ2003,SOEDZZ2101);上海交通大学“深蓝计划”(SL2020ZD204);南方海洋科学与工程广东省实验室(珠海)创新团队建设项目(311020003)

Similarities and differences of shallow water deformation of tidal wave in two adjacent bays: Daya Bay and Dapeng Bay

LI Song1,2,3, GUAN Weibing*1,2,3,4, CAO Zhenyi1,2, HE Tianqi1,2, YANG Yun1,2   

  1. 1. State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou 310012, China;
    2. Second Institute of Oceanography,MNR, Hangzhou 310012, China;
    3. School of Oceanography, Shanghai Jiao Tong University, Shanghai 200240, China;
    4. South Marine Science and Engineering Guangdong Laboratory(Zhuhai), Zhuhai 519080, China
  • Received:2020-05-27 Published:2020-09-15

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摘要： 利用实测资料分析重构了大亚湾和大鹏湾潮汐水位“双峰”现象,确定了浅水分潮的异常增长是潮位“双峰”现象的主要成因,其中四分之一日分潮和六分之一日分潮起着至关重要的作用。通过SCHISM模型构建大亚湾和大鹏湾附近海域高分辨率水动力模型,模拟结果表明近岸海域,在大亚湾以东,潮汐类型为不规则全日潮,以西为不规则半日潮,在两个海湾内均为不规则半日潮;研究海域的潮流均表现为不规则半日潮流。四分之一日分潮和六分之一日分潮在大亚湾和大鹏湾的不同变形过程是造成两个相邻海湾水文差异的直接原因。通过构建不同底摩擦强度、消除水底地形以及改变海湾水深的数值实验研究表明,分潮传播方向与水深变浅方向是否一致,是导致两个海湾潮波浅水变形不同的根本原因。

关键词: 大亚湾, 大鹏湾, 浅水分潮, SCHISM

Abstract: The phenomenon of “double peak” of tidal water level in Daya Bay and Dapeng Bay was reproduced by means of the measured data, and it is determined that the abnormal growth of shallow water tide is the main cause of the phenomenon, among which the one-quarter-day tide and the one-sixth-day tide played a crucial role. The high-resolution hydrodynamic model of Daya Bay and Dapeng Bay was constructed by using the SCHISM model. The simulation shows that in the open sea outside Daya Bay and Dapeng Bay, tidal type is irregular diurnal tide in the eastern sea, tidal type is irregular semidiurnal tide in the western sea and two bays. The pattern of current is irregular semidiurnal currents in study area. The difference of hydrology between the two adjacent bays is directly caused by the deformation process of one-quarter-day and one-sixth-day tide in Daya Bay and Dapeng Bay. Through the numerical experiments of building different bottom friction intensity, eliminating bottom topography and changing water depth, it is shown that whether the direction of split tide propagation is consistent with the direction of shallower water depth is the fundamental reason that leads to the different tidal wave deformation in two bays.

Key words: Daya Bay, Dapeng Bay, shallow water tide, SCHISM

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