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<p>Umm Al Quwain (UAQ) lagoon is a natural lagoon located in the northeastern part of the United Arab Emirates (UAE). Understanding the water circulation in the lagoon is essential for implementing the effective conservation measure to withstand future morphological changes. In this study, a two-dimensional hydrodynamics model is applied for UAQ lagoon using Delft3D-FM to investigate tide variability and currents within and on adjacent coastal lagoon region. The results show a maximum positive water level inside the lagoon of approximately 1.22&#xa0;m relative to local mean sea level. Water levels within the vicinity of the lagoon range from −&#xa0;0.95 to 1.22&#xa0;m. Additionally, it was identified areas within the lagoon where currents increase up to 1.6&#xa0;m/s due to the narrow inlet in the western entrances. However, most currents inside the lagoon are calmer varying from 0.1 to 0.4&#xa0;m/s. The net residual currents indicate a system in equilibrium, as the import and export estimates are close to zero and can be considered negligible. The findings of this study provide a baseline study of the flow characteristics at UAQ lagoon and enable future broader research.</p>

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Understanding the hydrodynamics of Umm Al Quwain lagoons through numerical modelling

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月11日

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  • Engy Mikhail,
  • Muhammad Saad Javed,
  • Serter Atabay,
  • Tarig Ali,
  • Geórgenes H. Cavalcante

摘要

Umm Al Quwain (UAQ) lagoon is a natural lagoon located in the northeastern part of the United Arab Emirates (UAE). Understanding the water circulation in the lagoon is essential for implementing the effective conservation measure to withstand future morphological changes. In this study, a two-dimensional hydrodynamics model is applied for UAQ lagoon using Delft3D-FM to investigate tide variability and currents within and on adjacent coastal lagoon region. The results show a maximum positive water level inside the lagoon of approximately 1.22 m relative to local mean sea level. Water levels within the vicinity of the lagoon range from − 0.95 to 1.22 m. Additionally, it was identified areas within the lagoon where currents increase up to 1.6 m/s due to the narrow inlet in the western entrances. However, most currents inside the lagoon are calmer varying from 0.1 to 0.4 m/s. The net residual currents indicate a system in equilibrium, as the import and export estimates are close to zero and can be considered negligible. The findings of this study provide a baseline study of the flow characteristics at UAQ lagoon and enable future broader research.