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利用笔者建立的描述河口陆架水相互作用的层化模型作进一步分析可以证实,河口偏转临界值随泄流量的增加而减小,因而作为背景场的苏北沿岸流虽然不能在冬季改变长江冲淡水固有的右偏趋势,却有可能在夏季诱导冲淡水左偏,进而由于长江口右侧海盆地形感应闭合的逆时针环流,它迫使冬季右偏的冲淡水更靠近岸边,诱导夏季左偏的冲淡水流线畸变,有平行于海水等深线的趋势,这一结论与观测结果基本一致。
Using the stratification model established by the author to describe the interaction of the estuarine and shelf water, further analysis can confirm that the critical value of the estuary deflection decreases with the increase of the discharge, so although the northern coastal stream as a background field can not change the Yangtze River diluate in winter However, due to the anticlockwise circulation of topography of the sea basin on the right side of the Yangtze Estuary, it forced the right-side flushing water in winter to be closer to the shore and induce the left-lateral deviation in summer Dilute the water streamline distortion, with the trend of parallel to seawater isobath, this conclusion is consistent with the observations.