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Modeling density currents in a typical tributary of the Three Gorges Reservoir, China

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  • Ma, Jun
  • Liu, Defu
  • Wells, Scott A.
  • Tang, Hongwu
  • Ji, Daobin
  • Yang, Zhengjian

Abstract

The initial filling of the Three Gorges Reservoir (TGR), China, has caused serious phytoplankton blooms in its tributary bays. A two-dimensional, laterally averaged, hydrodynamic and water quality CE-QUAL-W2 model was used to simulate the hydrodynamics and water temperature of a typical tributary (Xiangxi Bay XXB) of the TGR to study the relationship between phytoplankton and density currents. The CE-QUAL-W2 model was calibrated to data collected in XXB (depth profiles of velocity and water temperature at three locations) from January 2008 through December 2008. The model performed well in simulating (1) flow velocity profiles, (2) unusual water temperature profiles, (3) the plunge point location of the intrusion layer, (4) propagation speed, and (5) the travel distance of the density currents. The model was then used to examine potential factors that affect the density currents, such as water level fluctuations in the mainstem of the TGR, water temperature differences between the mainstem and XXB, and inflow rates to XXB. Therefore, a better understanding of the hydrodynamics of tributaries in the TGR can be used to understand the aquatic ecosystem dynamics of these tributaries.

Suggested Citation

  • Ma, Jun & Liu, Defu & Wells, Scott A. & Tang, Hongwu & Ji, Daobin & Yang, Zhengjian, 2015. "Modeling density currents in a typical tributary of the Three Gorges Reservoir, China," Ecological Modelling, Elsevier, vol. 296(C), pages 113-125.
    • Handle: RePEc:eee:ecomod:v:296:y:2015:i:c:p:113-125
    DOI: 10.1016/j.ecolmodel.2014.10.030
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    References listed on IDEAS

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    1. Abbas Afshar & Nasim Shojaei & Mahdi Sagharjooghifarahani, 2013. "Multiobjective Calibration of Reservoir Water Quality Modeling Using Multiobjective Particle Swarm Optimization (MOPSO)," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 27(7), pages 1931-1947, May.
    2. Lindim, C. & Pinho, J.L. & Vieira, J.M.P., 2011. "Analysis of spatial and temporal patterns in a large reservoir using water quality and hydrodynamic modeling," Ecological Modelling, Elsevier, vol. 222(14), pages 2485-2494.
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    Cited by:

    1. Chuo, Mingying & Ma, Jun & Liu, Defu & Yang, Zhengjian, 2019. "Effects of the impounding process during the flood season on algal blooms in Xiangxi Bay in the Three Gorges Reservoir, China," Ecological Modelling, Elsevier, vol. 392(C), pages 236-249.
    2. Jingjing Xia & Gaohong Xu & Ping Guo & Hong Peng & Xu Zhang & Yonggui Wang & Wanshun Zhang, 2018. "Tempo-Spatial Analysis of Water Quality in the Three Gorges Reservoir, China, after its 175-m Experimental Impoundment," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 32(9), pages 2937-2954, July.
    3. Jae Chung Park & Myoung-Jin Um & Young-Il Song & Hyun-Dong Hwang & Mun Mo Kim & Daeryong Park, 2017. "Modeling of Turbidity Variation in Two Reservoirs Connected by a Water Transfer Tunnel in South Korea," Sustainability, MDPI, vol. 9(6), pages 1-16, June.
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    5. Yang, Shiwei & Zhang, Zhongwei & Ji, Qianfeng & Liang, Ruifeng & Li, Kefeng, 2023. "Study on the water temperature distribution characteristics of a mixed pumped storage power station reservoir: A case study of Jinshuitan Reservoir," Renewable Energy, Elsevier, vol. 202(C), pages 1012-1020.

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