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Numerical Simulation on hydrodynamic environment effects of the reclamation project of Nanhui tidal flat in Yangtze Estuary

  • Di-fan Cao (曹迪凡)
  • Yong-ming Shen (沈永明)Email author
  • Mei-rong Su (苏美蓉)
  • Chun-xue Yu (余春雪)
Article
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Abstract

Reclamation project is the main method of coast exploitation, and the hydrodynamic environment effect of reclamation project is significant for project’s site selection and environmental protection. In consideration of 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 Nanhui tidal flat. The simulated results of the model agree well with the field data of tide level, current speed, current direction, temperature, salinity and water quality, and indicate 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 spring tide in dry season, the peak velocity during ebb tide in the North Channel will be reduced by 13%, while increased by 21% in the South Channel averagely. 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 the North Channel, which will result in a slight aggravation of the phosphorus restriction effect in Yangtze Estuary.

Key words

Yangtze Estuary 3-D numerical model hydrodynamics nutrients reclamation project 

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Copyright information

© China Ship Scientific Research Center 2019

Authors and Affiliations

  • Di-fan Cao (曹迪凡)
    • 1
    • 3
  • Yong-ming Shen (沈永明)
    • 1
    • 2
    Email author
  • Mei-rong Su (苏美蓉)
    • 4
  • Chun-xue Yu (余春雪)
    • 4
  1. 1.State Key Laboratory of Coastal and Offshore EngineeringDalian University of TechnologyDalianChina
  2. 2.Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhouChina
  3. 3.Ocean & Hydraulic Engineering InstitutePowerChina Huadong Engineering Corporation LimitedHangzhouChina
  4. 4.School of Environment and Civil EngineeringDongguan University of TechnologyDongguan, GuangdongChina

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