Open AccessInfluence of Seawards Water and Sediment Conditions on the Turbidity Maximum Zone in Yangtze Estuary
Author(s) -
Libing Huang,
Benchuan Zheng
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/719/4/042023
Subject(s) - sediment , turbidity , shoal , three gorges , estuary , yangtze river , hydrology (agriculture) , surface runoff , geology , environmental science , oceanography , geomorphology , geotechnical engineering , china , ecology , biology , political science , law
On the combined influence of runoff and tide, seawards sediment forms the turbidity maximum zone (TMZ) nearby the sandbar of Yangtze estuary. The water and sediment transport of the sandbar has important theoretical and practical significance for ecosystem, waterway regulation, and so on. According to the situation of seawards water and sediment variation, and based on the ECOMSED simulation of flow and suspended sediment dynamic process, the relation of the seawards water and sediment and the TMZ, and the law of water and sediment motion after the Three Gorges Project are discussed. It enhances the comprehension of suspended sediment concentration (SSC) variation law of the TMZ always seawards discharge. As the lower seawards sediment concentration, the SSC of the TMZ center is gradually decreasing with the increasing discharge. As the sediment concentration is higher than some critical value, the SSC of the TMZ center is gradually increasing with the increasing discharge.