TITLE:
Recent Variations of Water and Sediment Transport in the Adjacent Area between Two Large Estuaries
AUTHORS:
Dongfeng Xie, Shenyang Zhang
KEYWORDS:
Changjiang Estuary, Hangzhou Bay, Hydrodynamics, Sediment Transport, Estuarine Engineering
JOURNAL NAME:
World Journal of Engineering and Technology,
Vol.12 No.4,
November
27,
2024
ABSTRACT: The Changjiang Estuary and Hangzhou Bay are adjacent large estuaries. They have close water and sediment exchanges. Over the past decades, the Changjiang Estuary and Hangzhou Bay region have been affected by human activities such as dam construction and land reclamation. Based on hydrological data at the adjacent area of the two estuaries in 2014 and 2023, this study analyzed the recent variations of water and sediment transport between the two estuaries. The results show that the flow velocities, SSC and unit width sediment transport varied with the tides, decreasing from spring tides to neap tides. In recent years, the flow velocity and SSC decreased to a certain extent. Accordingly, the unit width sediment transport also decreased, with the magnitude of change being about one-third. These observed variations may have a profound influence on the estuarine ecological systems.