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杭州湾口南汇咀近岸水域水沙特征与通量
引用本文:陈沈良.杭州湾口南汇咀近岸水域水沙特征与通量[J].海洋科学,2004,28(3):18-22.
作者姓名:陈沈良
作者单位:华东师范大学河口海岸国家重点实验室,上海,200062
基金项目:国家自然科学基金项目(40276027),教育部科学技术研究重点项目(01079)
摘    要:南汇咀近岸水域是长江口与杭州湾交汇以及近岸水沙交换的重要地带。根据杭州湾口北部南汇咀-崎岖列岛断面上6个测站1999年1~2月大、中、小潮海流与悬沙含量的现场同步观测资料,阐述了该断面上潮流和悬沙浓度的分布变化特征,并通过断面进出潮通量和悬沙通量的计算,得出该断面以出水出沙为主要特征,与余流方向一致。分析表明,长江口与杭州湾的水沙交换是复杂的,而间接交换是其主要的方式。

关 键 词:杭州湾  水沙交换  潮流  悬沙浓度  水沙通量
文章编号:1000-3096(2004)03-0018-05
收稿时间:2002/12/12 0:00:00
修稿时间:2002年12月12

Hydrological and sediment features and fluxes in Nanhui nearshore waters,Hangzhou Bay
CHEN Shen-liang.Hydrological and sediment features and fluxes in Nanhui nearshore waters,Hangzhou Bay[J].Marine Sciences,2004,28(3):18-22.
Authors:CHEN Shen-liang
Abstract:The nearshore waters of Nanhui Spit,located in the transitional zone between the Changjiang Estuary and Hangzhou Bay,is an important area of water for sediment exchanges.From the measured data for flow and suspended sediment concentration(SSC)in the section from Nanhui Spit to Qiqu Archipelago,the features of tidal current and SSC distributions were analysed.The calculation results of flow and sediment fluxes during neap-spring tidal cycle indicated that the net flow and sediment fluxes discharged eastward,approximately consistent with the direction of residual current.The sediment exchange between the Changjiang Estuary and Hangzhou Bay shows an indirect exchange pattern,that is the Changjiang plume and its sediments pass in and out of Hangzhou Bay with flood and ebb tides.
Keywords:tidal current  suspended sediment concentration  sediment flux  Hangzhou Bay
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