Hydrodynamic Environment Response to Human Interventions in a Macro Tidal Bay: The Example of the Quanzhou Bay

被引：0
|
作者：
Hou Q. [1 ]
Zuo L. [1 ]
Lu Y. [1 ]
Wang Z. [1 ]
Mo S. [1 ]
She X. [1 ]
机构：
[1] State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing
来源：
Lu, Yongjun (yjlu@nhri.cn) | 1600年 / Editorial Board of Journal of Basic Science and卷 / 25期
关键词：
Hydrodynamics environment; Macro tidal bay; Mathematical model; Quanzhou Bay; Tidal current; Wave;
D O I：
10.16058/j.issn.1005-0930.2017.06.006
中图分类号：
学科分类号：
摘要：
Quanzhou Bay, the average and maximum tidal range of which being 4.2m and more than 6m, is a typical macro tidal bay. Quanzhou Bay opens eastward to Taiwan Strait, average and maximum wave height of the bay is 0.9m and 2~4m, sediment transport is influenced by the co-action of waves and currents. Regarding to hydrodynamics, sediment transport and sea bed evolution characteristics of Quanzhou Bay sea area, a two-dimensional mathematical model was developed to analyze the co-action of currents and waves. The simulated values of tidal stages, tidal current velocities, tidal current directions, and suspended sediment concentration in 2016 were in good agreement with the in-situ measured values. The simulated magnitude and pattern of erosion and sedimentation agreed well with the observations. This model was used to evaluate the effects of human interventions on the hydrodynamic environment of the Quanzhou Bay. Results show that side flat reclamation since 1978 caused tidal prism of Quanzhou Bay, Shihu-Xiutu section and Luoyangjiang estuary decreased by about 4%, 8%, and 14%, respectively. The scouring and silting caused by artificial islands distributed mainly in the surrounding sea areas of the project, indicating a little influence on shoal-channel evolution pattern in Quanzhou Bay. Tidal prism is an important index to maintain the shoal-channel stability for macro tidal bays, great attention should be paid not to affect flood discharging and tidal prism of bay and estuary connecting to the bay when develop in such bays. The results of this study can inform the protection, development, and utilization of shoal-channels on similar macro tidal bays, as well provide a scientific basis for comprehensive maritime protection and development. © 2017, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
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页码：1124 / 1138
页数：14
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