漂流ブイを用いた表層流観測による諫早湾口の物質輸送機構の検討(沿岸域の流れと物質循環(2),一般講演)

概要

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Recently, deterioration of aquatic environment, such as large-scale red tide and oxygen depression has been a serious social problem in the Ariake Bay. As a result of previous studies, it is considered that the current structure at the mouth of the Isahaya Bay plays an important role of substance transport of the northern Ariake Bay by the Tidal trapping. However, observations for a quantitative evaluation of the phenomena have not been executed, yet. In this study, a field observation was carried out by using drifters in February 2007 in order to clarify behavior of water body or substance in the coastal area. The result of this study implies that the strong tidal current with horizontal shear in the coastal area brings about a large tidal excursion that is more than 10km in spring tides and a strong longitudinal dispersion effect.
日本流体力学会の論文
2007-08-06