Simulation of Salinity Intrusion Into Nanakita River, Japan, Taking Into Account Effects of Morphological Changes And Wave Set-Up

Salinity intrusion into estuaries, in general, is mostly affected by river water discharge and tidal level. Besides, the change in salinity can also be influenced by other external elements such as wave height or river mouth morphology. In this study salinity distribution in the Nanakita River was investigated by using an Estuarine Coastal Ocean Model (ECOM) and in-situ data taking into account effects of morphological changes and waves. The overall agreement between the computed result and measuring data indicated that the model can be used to represent the salinity intrusion into estuaries.