Author(s): Masamitsu Arita; Akihiro Hashimoto
Linked Author(s): Akihiro Hashimoto
Keywords: Salinity intrusion; Nagara river; Tidal estuary; Mixing type; Flow diagram
Abstract: In this paper, study on a new concept about the classification of the local mixing types of the salinity intrusion in the tidal estuary was conducted using monitoring data on the Nagara river estuary. Flow parameters and diagram on the mixing types (highly stratified type, partially mixed type, well mixed type) were proposed using newly introduced non-dimensional flow parameters which estimate the strength of tidal effects and buoyant force from sea. Comparison between proposed concept of flow diagram on the mixing type and field data was conducted and it presents good agreements. It is cleared that proposed flow diagram and flow parameters are useful not only for the classification of local mixing but also to understand the physical characteristics in the tidal estuary.
Year: 2005