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Numerical Study on the Environment of Shenhu and Quanzhou Bays

Abstract

本文以福建中部的两个半封闭的海湾——深沪湾和泉州湾为研究对象,通过数值模拟的方法再现了当地的潮汐潮流,浅滩干湿变化,污染物的输运,百年一遇的台风过境引起的增水现象和台风生成的波浪特征,在此基础上进一步探讨了不同动力机制对当地泥沙动力特性的影响。 结果发现:福建沿岸的潮汐潮流以规则半日潮为主,由于潮差较大,一些浅滩、湿地和暗礁在低潮时会露出水面,在高潮时又重新被海水淹没,形成周期性的干湿变化过程。模拟结果还显示:当天文分潮由外海传入海湾时,动量和连续方程的非线性对流过程和海底的非线性摩擦耗散作用会导致主要分潮的衰减以及浅水分潮的增长,其直接结果就是造成涨落潮流过程的不对称从而成潮汐余流。潮汐余...In this report, two semi-enclosed bays (Shenhu and Quanzhou Bays) which are located at the middle coast of Fujian Province are studied using numerical models. The major focus are put on the local tides and tidal currents, periodical wetting and drying of tidal flats, wave development and water level increase in Shenhu Bay due to the passage of 100-year typhoon. Based on the validated model results...学位:博士后院系专业:海洋与环境学院海洋学系_海洋科学学号:BH1700005

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