长江感潮河段潮汐变化特征  

Tidal variation features of tidal reach of Changjiang River

作　　者：王文才[1,2] 李一平[1,2] 杜薇[1,2] 曾伟峰[1,2] 许益新 WANG Wencai;LI Yiping;DU Wei;ZENG Weifeng;XU Yixin(College of Environment, Hohai University, Nanjing 21009%, China;Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education, Hohai University, Nanjing 2X009%, China)

机构地区：[1]河海大学环境学院,江苏南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《水资源保护》2017年第6期121-124,132,共5页Water Resources Protection

基　　金：国家自然科学基金(51579071);创新研究群体科学基金(51421006);2016年度江苏省普通高校专业学位研究生实践创新计划项目(SJZZ16_0089);江苏省"创新团队计划";江苏高校优势学科建设工程资助项目

摘　　要：基于2011年长江下游大通水文站的逐日流量以及南京、镇江、江阴、天生港、徐六泾、共青圩6个潮位站的逐日高潮、低潮资料,研究海洋潮汐从河口向河段上游传播过程中的潮汐特征变化规律。结果表明,各潮位站25 h滑动平均的潮位变化与流量呈现相同的变化趋势,南京和镇江两个潮位站的水位变化最为明显,江阴、天生港、徐六泾的水位变化相对较小,共青圩潮位站的潮位基本不随径流发生相应的变化趋势;各潮位站之间均有一定的相关性,且相邻两个潮位站之间的水位相关性较高;随着潮位站之间距离的增大,水位的相关性呈现出明显的下降趋势;低水位的传播延迟时间均大于高水位的传播延迟时间;随着站点与入海口距离的增大,涨潮历时出现逐渐减小、落潮历时逐渐增大的变化趋势。Based on the daily discharge of Datong station in the downstream of the Yangtze river and the high and low tidal water level of Nanjing, Zhenjiang, Tianshenggang, Xuliujing, Gongqingwei stations in 2011, this p a p e r studied the tidal characteristics of ocean tides from the estuary to the upper reaches of the river. The results show that the tidal mean change of 25h sliding average of each tidal station shows the same trend as the discharge, the water level changes of two tide stations in Nanjing and Zhenjiang are the most obvious. Water level change of Jiangyin, Tianshenggang, Xuliujing stations is relatively small. The tidal water level of Gongqingwei station does not change with the runoff. There is a certain correlation between the tidal stations, and the correlation between the water level of the two adjacent tidal stations is higher. With the increase of the distance between tidal stations, the correlation of water levels shows a significant downward trend. Propagation delay time of low tidal level is greater than high tidal water level. Furthermore, with the increase of distance between the tidal stations and the estuary, flood tide duration displays the trend of gradual decrease while ebb tide duration presents the trend of gradualincrease.

关 键 词：径流 潮汐 感潮河段 预报 

分 类 号：P333[天文地球—水文科学]