长江口及其邻近海域两定点周日海流观测的准调和分析

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本文采用短期资料的潮流准调和分析方法对2016年7月长江口及其邻近海域两个连续站的表、中、底3层海流数据进行准调和分析,计算得到两站点的O1、K1、M2、S2、M4、MS4等6个分潮的调和常数,并绘制了各层各分潮的潮流椭圆.计算结果表明:该海域潮流流速由表及底逐渐降低,潮流为旋转流且为顺时针,潮流性质以不正规半日潮为主,分潮流主要为北分量大于东分量,且M2分潮占绝对优势.余流垂向表现为从上至下逐渐减小,方向指向东北向,且东分量大于北分量.结果 可以为同期观测的其他悬浮物分布及物质输运提供动力解释.
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