Abstract
The reclamation is the main method in the coast exploitation, and the assessment of the hydrodynamic environment effect of the reclamation project is important for project’s site selection and environmental protection. With consideration of the baroclinic water, a 3-D numerical model MIKE3 is applied to simulate Yangtze Estuary’s hydrodynamic environment to predict the impacts of the reclamation project of the Nanhui tidal flat. The simulated results of the model agree well with the field data of the tide level, the current speed, the current direction, the temperature, the salinity and the water quality, and it is indicated that after the reclamation project, the high tide level will be lower, while the low tide level will be higher in the South Branch in general. During the spring tide in the dry season, the peak velocity during the ebb tide in the North Channel will be reduced by 13%, while it will be increased by 21% in the South Channel in average. The salinity will be increased in the North Channel, while reduced in the South Passage, besides, the reclamation project will aggravate the saltwater intrusion of the North Branch. The value of N/P will be increased by about 4% in the whole South Branch except for the North Channel, leading to a slight aggravation of the phosphorus restriction effect in the Yangtze Estuary.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Shen Y., Jia H., Li C. et al. Numerical simulation of saltwater intrusion and storm surge effects of reclamation in Pearl River Estuary, China [J]. Applied Ocean Research, 2018, 79(1): 101–112.
Guo Y., Zhang J., Zhang L. et al. Computational investigation of typhoon-induced storm surge in Hangzhou Bay, China [J]. Estuarine, Coastal and Shelf Science, 2009, 85(1): 530–537.
Guo Y., Wu X., Pan C. et al. Numerical simulation of the tidal flow and suspended sediment transport in the Qiantang Estuary [J]. Journal of Waterway, Port, Coastal and Ocean Engineering, 2012, 138(3): 192–203.
Wan Y., Qiu C., Doering P. et al. Modeling residence time with a three-dimensional hydrodynamic model: Linkage with chlorophyll a, in a subtropical estuary [J]. Ecological Modelling, 2013, 268: 93–102.
Liu Z., Hashim N. B., Kingery W. L. et al. Hydrodynamic modeling of St. Louis Bay Estuary and watershed using EFDC and HSPF [J]. Journal of Coastal Research, 2016, 52: 107–116.
Passeri D. L., Hagen S. C., Medeiros S. C. et al. Impacts of historic morphology and sea level rise on tidal hydrodynamics in a microtidal estuary (Grand Bay, Mississippi) [J]. Continental Shelf Research, 2015, 111(Part B): 150–158.
Xu B., Burnett W., Dimova N. et al. Hydrodynamics in the Yellow River Estuary via radium isotopes: Ecological perspectives [J]. Continental Shelf Research, 2013, 66(9): 19–28.
Zhang M., Townend I. H., Cai H. et al. The influence of seasonal climate on the morphology of the mouth-bar in the Yangtze Estuary, China [J]. Continental Shelf Research, 2018, 153(1):30–49.
Kuang C. P., Chen W., Gu J. et al. Comprehensive analysis on the sediment siltation in the upper reach of the deepwater navigation channel in the Yangtze Estuary [J]. Journal of Hydrodynamics, 2014, 26(2): 299–308.
Yang Y. P., Zhang M. J., Li Y. T. et al. The variations of suspended sediment concentration in Yangtze River Estuary [J]. Journal of Hydrodynamics, 2015, 27(6): 845–856.
Wang B., Lu S. Q., Lin W. Q. et al. Water quality model with multiform of N/P transport and transformation in the Yangtze River Estuary [J]. Journal of Hydrodynamics, 2016, 28(3): 423–430.
Gong Z., Zhang C. K., Wan L. M. et al. Tidal level response to sea-level rise in the Yangtze Estuary [J]. China Ocean Engineering, 2012, 26(1): 109–122.
Jiang C., Li J., Swart H. E. D. Effects of navigational works on morphological changes in the bar area of the Yangtze Estuary [J]. Geomorphology, 2012, 139–140(2): 205–219.
Dai Z. J., Chu A., Li W. H. et al. Has suspended sediment concentration near the mouth bar of the Yangtze (Changjiang) Estuary been declining in recent years? [J]. Journal of Coastal Research, 2017, 29(4): 809–818.
Yin G., Hou L., Liu M. et al. Effects of multiple antibiotics exposure on denitrification process in the Yangtze Estuary sediments [J]. Chemosphere, 2017, 171(1): 118–125.
Wan Y., Zhao D. Observation of saltwater intrusion and ETM dynamics in a stably stratified estuary: The Yangtze Estuary, China [J]. Environmental Monitoring and Assessment, 2017, 189(2): 89–102.
Kuang C., Chen W., Gu J. et al. River discharge contribution to sea-level rise in the Yangtze River Estuary, China [J]. Continental Shelf Research, 2017, 134(1): 63–75.
Li H. L., Chen J. F., Lu Y. et al. Seasonal variation of DO and formation mechanism of bottom water hypoxia of Changjiang River Estuary [J]. Journal of Marine Sciences, 2011, 29(3): 78–87(in Chinese).
Wang K., Chen J. F., Jin H. Y. et al. The four seasons nutrients distribution in Changjiang River Estuary and its adjacent East China Sea [J]. Journal of Marine Sciences, 2011, 29(3): 18–35(in Chinese).
Chai C. Study on the status and characteristics of eutrophication in the Yangtze River Estuary [D]. Doctoral Thesis, Qingdao, China: Institute of Oceanology, Chinese Academy of Sciences, 2006(in Chinese).
Fang T. Effects of irradiance, Nitrate and Phosphate on growth of phytoplankton in Changjiang Estuary [D]. Doctoral Thesis, Shanghai, China: East China Normal University, 2008(in Chinese).
Author information
Authors and Affiliations
Corresponding author
Additional information
Project supported by the National Natural Science Foundation of China (Grant Nos. 51779039, 51879028).
Biography: Di-fan Cao (1991-), Male, Master
Rights and permissions
About this article
Cite this article
Cao, Df., Shen, Ym., Su, Mr. et al. Numerical simulation of hydrodynamic environment effects of the reclamation project of Nanhui tidal flat in Yangtze Estuary. J Hydrodyn 31, 603–613 (2019). https://doi.org/10.1007/s42241-019-0006-4
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s42241-019-0006-4