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钦州湾水交换能力数值模拟研究

陈振华 夏长水 乔方利

陈振华, 夏长水, 乔方利. 钦州湾水交换能力数值模拟研究[J]. 海洋学报, 2017, 39(3): 14-23.
引用本文: 陈振华, 夏长水, 乔方利. 钦州湾水交换能力数值模拟研究[J]. 海洋学报, 2017, 39(3): 14-23.
Chen Zhenhua, Xia Changshui, Qiao Fangli. Numerical simulation of water exchange in the Qinzhou Bay of China[J]. Haiyang Xuebao, 2017, 39(3): 14-23.
Citation: Chen Zhenhua, Xia Changshui, Qiao Fangli. Numerical simulation of water exchange in the Qinzhou Bay of China[J]. Haiyang Xuebao, 2017, 39(3): 14-23.

钦州湾水交换能力数值模拟研究

基金项目: 国家自然科学基金委员会——山东省人民政府联合资助海洋科学研究中心项目(U1606405);公益项目——印度洋海域海洋环境数值预报系统研制与示范(201005033-2);广西教育厅科研项目——钦州湾水动力机制及水交换能力数值研究(201010LX444)。

Numerical simulation of water exchange in the Qinzhou Bay of China

  • 摘要: 基于普林斯顿海洋模式(Princeton Ocean Model,POM),以M2、S2、K1、O1、M4和MS4 6个分潮为驱动,建立了包含漫滩处理的高分辨率钦州湾水动力模式。与现场观测的数据对比表明,该模式能较好地刻画钦州湾的水动力特征。在此基础上建立了水质模型,模拟钦州湾的水交换过程。模拟结果表明:钦州湾水交换能力整体上较强,整个湾平均的水体半交换时间约为18 d,水体平均存留时间为45 d。空间分布上,钦州保税港区以南海域水交换能力最强,半交换时间小于1 d;沿着水道向北,水交换能力逐渐减弱;茅尾海中部半交换时间为26~28 d;茅尾海的东、西、北3个部分存在水交换滞缓区,半交换时间超过50 d。数值实验表明,采用漫滩技术对准确模拟钦州湾潮流速度和水交换能力非常重要,不考虑漫滩过程会低估钦州湾的潮流速度和水体交换能力。水平扩散系数对流速及交换时间都有影响,但影响有限。
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  • 收稿日期:  2016-11-04

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