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OBSERVATION and ANALYSIS of CURRENT in DAFENG of JIANGSU PROVINCE

机译：江苏省大丰目前的观察与分析

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摘要

The ocean currents during the periods of spring, middle and neap tides at six stations near Dafeng in Jiangsu Province are observed, the tidal current characteristics in the survey area are discussed, and the quasi-harmonic analysis is carried out. The harmonic co nstants and elliptical elements of six main tidal components, O1, Kl, M2, S2, M4 and MS4, are obtained. The north component of the diurnal current and semidiurnal current amplitudes at the observation stations are larger than the East component. Among the tidal pattern coefficients of each station, the discriminant coefficients of tidal current types at each level are less than or equal to 0.5, which belongs to the normal half-day tidal current. The main form of tidal current movement at each station is the recirculation in the past. Most stations' tidal currents rotate counterclockwise. The maximum possible velocity of tidal current in the survey area is 235.7cm/s, which appears on the surface of B6 station, and its direction is 357 degrees. The maximum possible migration distance of water particle points in the survey area is between 14454.4 and 36042.7 m. The residual current of each station during observation period is obtained by quasi-harmonic analysis. The vector diagram of residual current is drawn, and the residual current of each station layer is analyzed. During the spring tide period, the observed residual current velocities in each layer of each station ranged from 3.4 to 22.7 cm/s, in the middle tide period ranged from 8.9 to 23.5 cm/s, and in the neap tide period ranged from 0.8 to 20.9 cm/s. During the observation period, the maximum residual current velocities appeared in the surface layer of B4 station and flowed to 277 degrees, while the vertical residual current velocities gradually decreased from the surface to the bottom, and the flow direction was basically identical.
机译：观察到江苏省大丰附近的春季，中部和NeAP潮汐期间的海洋电流，讨论了调查区域的潮流特性，进行了准谐波分析。获得六个主潮汐组分，O1，K1，M2，S2，M4和MS4的谐波CO nstants和椭圆形元件。观察站的日间电流和半峰电流振幅的北部分量大于东部部件。在每个站的潮汐模式系数中，每个级别的潮汐电流类型的判别系数小于或等于0.5，属于正常的半天潮流。每个站的潮流运动的主要形式是过去的再循环。大多数车站的潮流逆时针旋转。调查区域中的潮流的最大可能速度为235.7cm / s，出现在B6站的表面上，其方向为357度。调查区水粒子点的最大可能迁移距离在14454.4和36042.7米之间。观察期间每个站的残留电流是通过准谐波分析获得的。绘制残余电流的矢量图，分析了每个站层的剩余电流。在春季潮汐周期期间，每个站的每层的观察到的残留电流速度范围为3.4至22.7cm / s，中间潮汐期间，范围为8.9至23.5cm / s，并且在NEAP潮汐期间为0.8到20.9 cm / s。在观察期间，最大剩余电流速度在B4站的表面层中出现并流到277度，而垂直剩余电流速度从表面逐渐减小，并且流动方向基本相同。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2085-2085|共1页
  • 作者

    Y. Zhang; Y. Jin; E. Wang;

  • 作者单位

    First Institute of Oceanography Ministry of Nature Resources Qingdao 266061 China;

    First Institute of Oceanography Ministry of Nature Resources Qingdao 266061 China;

    First Institute of Oceanography Ministry of Nature Resources Qingdao 266061 China;

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