苏北浅滩浅水分潮特征研究  

Characteristics of Shallow Water Tidal Constituentsalong North Jiangsu Coast

作　　者：吕喆[1] 胡松[1,2] 

机构地区：[1]上海海洋大学海洋科学学院海洋生态系统与环境实验室,上海201306 [2]国家渔业工程技术研究中心,上海201306

出　　处：《海洋湖沼通报》2017年第2期31-38,共8页Transactions of Oceanology and Limnology

基　　金：上海市科委重点支撑项目(13230502000)资助

摘　　要：应用高分辨率网格和高精度的苏北浅滩地形数据,利用非结构有限体积模型FVCOM,精细化地模拟了苏北浅滩潮汐主要特征,研究了浅水分潮M4、MS4和M6的主要特征,并与前人的研究成果做了比较。本文结果显示M4和MS4分潮潮波传播特征类似,浅滩内存在3个旋转潮波系统,南侧小庙洪水道处为逆时针旋转,浅滩北侧为顺时针和逆时针旋转系统各1个。对于M6分潮,本文的结果显示存在3个无潮点,2个为逆时针,1个为顺时针。M4分潮振幅在近岸处最大能达到14cm以上,MS4分潮振幅比M4略小,M6振幅最小,仅能达到M4分潮振幅的20%左右。为了验证浅滩沙脊地貌对当地浅水分潮的影响,本文进一步在平滑地形的基础上重新模拟主要浅水分潮M4,结果表明水道和沙脊地貌参与了当地浅水分潮无潮点的形成,并且浅滩的坡度是影响振幅大小的重要因素。A successful simulation for the tides has been done based on the Finite Volume Coastal Ocean Model （FVCOM） with unstructured triangle grids in high resolutions in Subei （north Jiangsu Province） bank. The results showed that the M4was quite resemble of MS4 which containedthreetidal amphidromic systems,the south one anticlockwise at Channel Xiaomiaohong; the north one anticlockwise near Channel Xiyang; and the middle one clockwise two clockwiseamphidromic points. Accor value of 14cm; MS4 is relatively smaller; perimentwas carried out to examine the in the middle. M6 has one anticlockwiseamphidromic point and ding to the results, the amplitude of M4 can reach a maximal and the amplitude of M6 is only 20% of M4. A sensitivity exrole of radial submarine sand ridge system in Subei bank by smoothing the depth around Jianggang. It was found that the submarine sand ridge played importantroles in patterning amphidromic position; however the slope of Subei bank itself dominantly affected the amplitudes of shallow water constituents.

关 键 词：苏北浅滩 浅水分潮 FVCOM 

分 类 号：P731.23[天文地球—海洋科学]