长江口最大浑浊带悬沙浓度变化趋势及成因（英文）

编号 zgly0001584926

文献类型 期刊论文

文献题名 长江口最大浑浊带悬沙浓度变化趋势及成因（英文）

作者 杨云平  李义天  孙昭华  樊咏阳 

作者单位 StateKeyLaboratoryofWaterResourcesandHydropowerEngineeringScience  WuhanUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2014年01期

年份 2014 

分类号 P333.4 

关键词 turbiditymaximumzone(TMZ)  suspendedsedimentconcentration  trendsandcauses  YangtzeRiverestuary 

文摘内容 Based on the analysis of suspended sediment elements at estuaries,influence of human activities and estuarine regulation projects on the turbidity maximum zone was studied according to the measurement data between 1959 and 2011.It was found that human activities had little effect on the seaward water while the sharp decrease of sediment volume and concentration in runoff led to the sharp decrease of turbidity maximum zone in the estuary.The concentration at outside sea and Hangzhou Bay did not change,and that along the Subei coast also decreased a little,which had no influence on the turbidity maximum zone.Compared with the concentration between 1959 and 1999,the peak of concentration moved upstream in the estuary,and the concentration in 2000–2009 decreased by about 24.73% with a narrower variation range along the river to the sea.The suspended sediment concentration in North Passage was low in upstream and downstream because of the decrease of seaward sediment and coarsening of bed material,while it was relatively high in the middle due to the influence of sediment cross the north jetty.