中文摘要：

在直径的 10 m 的一个浮标被用来在垂直侧面记录当前的速度和方向在近海 Changjiang (长江) 河口的区域(与 46.0 m 的平均的水深度) 为一年。结果包括：(1 ) 水流顺时针方向旋转并且没有清楚的季节的变化，当前的方向在垂直侧面是一致的。(2 ) 水平当前的速度通常高，与发生在夏天的 128.5 cm/s 和出现在离表面通常靠近的冬季的 105.5 cm/s 的最大值。在在一样的垂直侧面秋天的平均当前的速度变化(差别是不到 8.0 cm/s ) ，与发生在夏天的 47.0 cm/s 和在冬季的 40.8 cm/s 的最大值。平均当前的速度在春天潮期间是两次那在小潮潮(26.5 cm/s ) 期间。(3 ) 速度的重要差别在垂直侧面被观察。最大的当前的速度发生在任何一个表面(春天和冬季) 或表面下(夏天和秋天) ，以出现在底部的最小的当前的速度。所有层的最大的平均当前的速度是 57.9 cm/s，它在夏天期间发生在 18-m 层。(4 ) 剩余水流的平均速度从 7.5 cm/s 到 11.3 cm/s，与在春天的最强壮的发生并且在冬季最弱。所有层的剩余水流在春天和冬季期间是东方的，而向东北或向北方在夏天和秋天期间。(5 ) 水流在 Changjiang 河口近海被冲淡的 Changjiang 河分泌物，台湾温暖的水流，季风和潮一起影响。

英文摘要：

A buoy of 10 m in diameter was used to record the current speed and direction in a vertical profile in the offshore area of the Changjiang（Yangtze River） Estuary（with an average water depth of 46.0 m） for one year.The results include：（1） the currents rotate clockwise and the current direction is consistent in a vertical profile without clear seasonal variations.（2） The horizontal current speeds are generally high,with a maximum of 128.5 cm/s occurring in summer and 105.5 cm/s appearing in winter commonly close to the surface.The average current speeds in the vertical profile fall in the same range（the differences are less than 8.0 cm/s）,with the maximum of47.0 cm/s occurring in summer and 40.8 cm/s in winter.The average current speed during spring tides is twice that during neap tides（26.5 cm/s）.（3） Significant differences of speeds are observed in the vertical profile.The maximum current speed occurs at either surface（spring and winter） or sub-surface（summer and autumn）,with the minimum current speed appearing at the bottom.The maximum average current speed of all layers is 57.9cm/s,which occurs in the 18-m layer during summer.（4） The average speed of the residual currents ranges from7.5 cm/s to 11.3 cm/s,with the strongest occurring in spring and weakest in winter.The residual currents of all layers are eastward during spring and winter,whereas northeastward or northward during summer and autumn.（5） The currents in the offshore of Changjiang Estuary are impacted collectively by diluted Changjiang River discharge,the Taiwan Warm Current,monsoon and tides.