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Re-originate Burullus coastal lake's ecosystem using salinity dynamics as a management tool

机译：使用盐度动态作为管理工具重新建立Burullus沿海湖泊的生态系统

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摘要

Burullus lagoon is a brackish water coastal lake on the Mediterranean Sea, Egypt. Lake ecosystem has deteriorated since Aswan High Dam Construction, 1965. Lake salinity has suffered from significant decrease due to excess unregulated drainage water effluent into the lake, which affected the lake flora and fauna. This study presents a two-dimensional depth-averaged mass transport model with the finite volume method (FVM) in discretization to simulate salinity distribution under actions of wind and tidal current for Burullus shallow coastal lake. This model is based on MAC on unstructured collocated grid for shallow water equations (MACS algorithm) with the distributed memory system to increase the computational efficiency on the basis of domain decomposition method. This method is implemented by MPI (message-passing interface), which allows us to (significantly) reduce the elapsed time of computation. It has a potential for long-term simulation for coastal process. Good agreement between analytical, experimental, and field measured data and predicted salinity has been achieved during model verification. Different scenarios have been studied to understand the lake salinity dynamics and circulations, and to develop the most adequate solution for environmental management. These scenarios revealed the importance of fresh drainage water release into the lake and the possibility of its use as an artificial flood similar to pre-Aswan High Dam construction flood under a well-monitored control system.
机译：Burullus泻湖是埃及地中海上的咸淡水沿海湖。自1965年阿斯旺高坝建设以来，湖泊生态系统已经恶化。由于盐分过多地流入湖泊，导致湖泊盐碱度显着下降，这影响了湖泊动植物。这项研究提出了一种二维的深度平均传质模型，该模型采用有限体积法（FVM）离散化，以模拟风和潮流作用下Burullus浅海沿岸湖泊的盐度分布。该模型基于基于非结构化并置网格的浅水方程组MAC（MACS算法），并采用分布式存储系统，以在域分解方法的基础上提高计算效率。该方法由MPI（消息传递接口）实现，这使我们能够（显着）减少计算的时​​间。它具有对沿海过程进行长期模拟的潜力。在模型验证过程中，分析，实验和现场测得的数据与预测的盐度之间达成了良好的一致性。为了了解湖泊盐度的动态和环流，并开发出最合适的环境管理解决方案，已经研究了各种方案。这些场景揭示了向湖中排放新鲜排水的重要性，以及将其用作人工洪水的可能性，类似于在受到良好监控的控制系统下的阿斯旺高坝之前的建设洪水。

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  • 来源
    《Ocean & coastal management》 |2013年第ptaa期|7-18|共12页
  • 作者

    M.R. Soliman; S. Ushijima; I. El-Shinawy;

  • 作者单位

    Gradate school of Engineering, Kyoto University, Kyoto, Japan;

    Academic Center for Computing and Media Studies, Kyoto University, Japan;

    Coastal Research Institute, National Water Research Center, Egypt;

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  • 正文语种 eng
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