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为掌握长江的实际入海流量,基于长江大通水文站和长江口徐六泾水文站2008年全年流量资料,初步分析探讨了徐六泾流量和大通流量的关系。结果表明,徐六泾日流量和大通日流量过程基本一致,但徐六泾日流量过程较大通滞后4~6 d;徐六泾与大通日流量差值存在14.8、28.4、166.6 d的变化周期,分别对应天文潮的半月周期、月周期和春秋大潮周期的变化;从全年看,徐六泾流量略大于大通流量;大通流量基本可代表长江的入海流量。
In order to grasp the actual flow into the sea in the Yangtze River, based on the annual flow data of Datong Hydrographic Station of Changjiang River and Xu-Lijing Hydrology Station of the Changjiang River Estuary in 2008, the relationship between Xu Lijing flow and Chase flow was analyzed. The results show that the daily flow rate of Xuliujing is basically the same as that of Datong Day, but the daily flow rate of Xuliujing is delayed by 4 ~ 6 days, while the difference of the daily flow rate of Xuliujing and Datong is 14.8, 28.4 and 166.6 days , Corresponding to the astronomical tide half-moon cycle, monthly cycle and spring and autumn tidal cycle changes; from the year, Xu Liujing slightly larger than the traffic flow Chase; Chase traffic can basically represent the Yangtze River into the sea flow.