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Conceptual Model for Simulating the Adjustments of Bankfull Characteristics in the Lower Yellow River, China

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  • Yuanjian Wang
  • Xudong Fu
  • Guangqian Wang

Abstract

We present a conceptual model for simulating the temporal adjustments in the banks of the Lower Yellow River (LYR). Basic conservation equations for mass, friction, and sediment transport capacity and the Exner equation were adopted to simulate the hydrodynamics underlying fluvial processes. The relationship between changing rates in bankfull width and depth, derived from quasiuniversal hydraulic geometries, was used as a closure for the hydrodynamic equations. On inputting the daily flow discharge and sediment load, the conceptual model successfully simulated the 30-year adjustments in the bankfull geometries of typical reaches of the LYR. The square of the correlating coefficient reached 0.74 for Huayuankou Station in the multiple-thread reach and exceeded 0.90 for Lijin Station in the meandering reach. This proposed model allows multiple dependent variables and the input of daily hydrological data for long-term simulations. This links the hydrodynamic and geomorphic processes in a fluvial river and has potential applicability to fluvial rivers undergoing significant adjustments.

Suggested Citation

  • Yuanjian Wang & Xudong Fu & Guangqian Wang, 2014. "Conceptual Model for Simulating the Adjustments of Bankfull Characteristics in the Lower Yellow River, China," Journal of Applied Mathematics, Hindawi, vol. 2014, pages 1-12, August.
    • Handle: RePEc:hin:jnljam:852174
    DOI: 10.1155/2014/852174
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