热带海洋学报 ›› 2024, Vol. 43 ›› Issue (1): 28-39.doi: 10.11978/2023024CSTR: 32234.14.2023024

• 海洋水文学 • 上一篇    下一篇

罗源湾潮致余流特征及其对物质分布的影响

丁一(), 王翠(), 姜尚, 陈秋明   

  1. 自然资源部第三海洋研究所, 福建 厦门 361005
  • 收稿日期:2023-02-28 修回日期:2023-05-15 出版日期:2024-01-10 发布日期:2024-01-19
  • 作者简介:

    丁一(1999—), 男, 硕士研究生, 研究方向为近海环境动力学。email:

  • 基金资助:
    厦门市自然科学基金项目(3502Z20227248); 国家自然科学基金项目(41406121)

Characteristics of tidal residual currents in the Luoyuan Bay and their influence on material distribution

DING Yi(), WANG Cui(), JIANG Shang, CHEN Qiuming   

  1. Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
  • Received:2023-02-28 Revised:2023-05-15 Online:2024-01-10 Published:2024-01-19
  • Supported by:
    Xiamen Natural Science Foundation(3502Z20227248); National Natural Science Foundation of China(41406121)

摘要:

基于MIKE 3开展了罗源湾的三维数值模拟, 以流场和断面垂向流速阐释了罗源湾的潮流分布特征, 计算了罗源湾的潮致余流场, 采用拉格朗日粒子追踪法模拟了具有粒子特性的物质在湾内的运移并分析了粒子的运动规律, 结合潮流和潮致余流特征讨论了罗源湾不同区域的物理自净能力。研究结果表明, 罗源湾西北部、东北岸内凹处和内湾口处形成了余环流结构, 湾内不同区域的物质分布与潮致余流结构有明显相关性, 粒子在罗源湾西北部海域运移缓慢, 而湾口及可门水道附近具有较好的自净能力。本研究为进一步探讨罗源湾污染物质分布机制提供了科学依据, 为罗源湾的污染控制和环境保护提供了技术支撑, 研究方法也为其他海湾的相关研究提供借鉴参考。

关键词: 罗源湾, MIKE 3, 潮流特征, 潮致余流, 拉格朗日粒子追踪

Abstract:

A three-dimensional numerical simulation using MIKE 3 was carried out to explain the tidal distribution characteristics of the Luoyuan Bay in terms of flow field and cross-sectional vertical velocity, calculate the tidal residual flow field in the Luoyuan Bay, simulate the transport of material with particle characteristics in the bay using Lagrangian particle tracking method, and analyze the movement pattern of particles. The results show that the residual circulation structure is formed in the north-western part of the Luoyuan Bay, the northeastern recess and the inner bay mouth, and the material distribution in different areas of the bay is significantly correlated with the tidal residual current structure. This study provides a scientific basis for further investigation of the distribution mechanism of pollutants in the Luoyuan Bay, and provides technical support for pollution control and environmental protection in the Luoyuan Bay.

Key words: Luoyuan Bay, MIKE 3, tidal characteristics, tidal residual currents, Lagrangian particle tracking