Author(s): Mochammad Meddy Danial, Kiyosi Kawanisi, Masoud Bahreinmotlagh, Mohamad Basel Al-Sawaf, Junya Kagami
Linked Author(s): Meddy Danial
Keywords: Tidal current pattern monitor, acoustic tomography, two-dimensional finite element modeling, asymmetric bifurcation channel network
Abstract: Characteristics of the estuary system are always unique due to the geometrical shape and tidal regime. In addition, interaction between river flow discharge and tidal wave can lead to inequality of velocity pattern. Therefore, monitoring complex flow patterns in estuaries is needed to understand the dynamic processes of flow field in shallow bifurcation channel influenced by tidal motion. Combination of Fluvial Acoustic Tomography System (FATS) and two-dimensional depth averaged finite element modeling are used to investigate the behavior of flow pattern in asymmetric bifurcation channel network. Besides, moored ADCP measurement campaigns are carried out for providing and establishing reference data. The flow pattern in Ota River estuary shows asymmetric behavior. In addition, the comparison between the FATS data and the numerical model results is relatively satisfactory in tidal flow patterns though there are slight differences. The FATS, however, is more reliable compared to numerical modeling in measuring flow velocity in the tidal channel network
Year: 2017