Behaviour of fine suspended sediment at the North passage of the Changjiang Estuary, China
Behaviour of fine suspended sediment at the North passage of the Changjiang Estuary, China
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DOI：
10.1016/j.jhydrol.2004.01.014
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发表时间：
2004-06
影响因子：
6.4
通讯作者：
Z. Shi
中科院分区：
文献类型：
--
作者：
Z. Shi
测定了长江口北通道春潮、中潮和小潮的流速、盐度和悬沙浓度。浊度最大值持续出现在春季和中潮汐期间。分析了潮间带、春季/小潮期和浊度最大值内细悬沙输运过程的季节变化。浊度最大值形成的主要机制是：(1)北通道向陆端潮汐不对称，(2)近层周期性潮汐重沉，(3)北通道悬浮/盐度分层抑制湍流。
Current velocity, salinity and suspended sediment concentration were measured at spring, moderate and neap tides at two ends (landward and seaward) of the North Passage of the Changjiang Estuary. A turbidity maximum was consistently observed during spring and moderate tides. The data were analyzed for intratidal, spring/neap and seasonal variations in fine suspended sediment transport processes within the turbidity maximum there. The dominant mechanisms responsible for the formation of the turbidity maximum are (1) tidal asymmetry at the landward end of the North Passage, (2) near-bed periodic tidal resuspension and (3) turbulence suppression by suspension/salinity stratifications at the North Passage.