椒江河口悬沙浓度时空变化特征分析  

Characteristics of Temporal and Spatial Variation of Suspended Sediment Concentration in Jiaojiang River Estuary

作　　者：徐海 武小勇[2] 张沈阳 王璟 

机构地区：[1]浙江省河海测绘院,浙江杭州310008 [2]国家海洋局第二海洋研究所,浙江杭州310012

出　　处：《浙江水利科技》2017年第3期7-12,共6页Zhejiang Hydrotechnics

摘　　要：2013年12月和2014年6月,在椒江河口各布设6个水文观测站,进行洪枯2季大小潮水文观测,以此实测资料为基础,分析了椒江河口悬沙浓度的时空分布变化特征。结果表明:(1)椒江河口悬沙浓度一般而言枯季高于洪季,大潮高于小潮;(2)纵向分布上,从上游椒江河道向下游椒江口门,再至台州湾海域,悬沙浓度逐渐降低;(3)垂向分布上,椒江河口最大浑浊带内发育有泥跃层是其垂向分布的最显著特点。泥跃层的发育受潮流速、悬沙浓度、盐度的共同影响,枯季较洪季发育显著,枯季小潮时最为发育。Abstract： Dry and wet season hydrological observations at six measuring points in the Jiaojiang River Estuary has been carded out during the spring and neap tide in December 2013 and June 2014, based on these date, characteristics of temporal and spatial variation of suspended sediment concentration in Jiaojiang River Estuary are analysised.The results show that： ① the suspended sediment concentration is higher in dry season than in wet season, and higher during spring than neap tide; ② in longitudinal distribution, the suspended sediment concentration is gradually decreased from Jiaojiang River to estuary entrance then to TaiZhou Bay; ③the lutoclines develop in vertical profile in the turbidity maximum is the most obvious characteristic of the suspended sediment concentration in vertical distribution; the development of the lutoclines are in the influence of tidal velocity, suspended sediment concentration and salinity, the scale of it in dry season is larger than in wet season, and most development during the neap tide in dry season.

关 键 词：椒江河口 悬沙浓度 最大浑浊带 时空变化 泥跃层 

分 类 号：TV148[水利工程—水力学及河流动力学]