人民长江Issue(5)：19-25,7.DOI:10.16232/j.cnki.1001-4179.2015.05.004
长江口悬沙浓度时空变化研究--以2012年和2013年洪季为例
Spatial and temporal variation of suspended sediment concentration (SSC) in Yangtze estuary:a case study on flood seasons of 2012 and 2013
摘要
Abstract
The suspended sediment concentration ( SSC) at estuary has important geomorphological significance on ecology, geomorphology and engineering. In this research, the plane and vertical variation, spring and neap variation, inter-annual vari-ation of SSC in the sites of south branch, south channel, north channel, south passage, north passage of Yangtze estuary and its adjacent coastal area are analyzed based on the simultaneous observations at ten measuring points during the spring and neap in July 2012 and July 2013. The results include:the SSC changes little along the inner estuary. The longitudinal difference of SSC during spring tide is significantly greater than that during neap tide. The horizontal difference of SSC in lower runoff year of 2013 was significantly greater than that in 2012. The location of turbidity maximum zone corresponds well with the minimum water depth, maximum tidal range, salinity front and the mutation belt from sediment to bottom mud. The plane features of SSC in Yan-gtze estuary show a significant temporal and vertical variation, which reflects that the runoff ( with its SSC) , tides, waves and other factors have a complex co-effect on the sediment movement in estuary.关键词
悬沙浓度/空间分布/最大浑浊带/长江口Key words
suspended sediment concentration/spatial variation/maximum turbidity zone/Yangtze estuary分类
天文与地球科学引用本文复制引用
陆叶峰,杨世伦,刘建华,丁平兴,张卫国..长江口悬沙浓度时空变化研究--以2012年和2013年洪季为例[J].人民长江,2015,(5):19-25,7.基金项目
国家科技部973项目(2010CB951204) （2010CB951204）
国家科技基础性工作专项重点项目(2013FY112000) （2013FY112000）
国家自然科学基金项目(41130856) （41130856）
