Abstract
The influence of winds and topography changes on the salinity environment in Yoshino River mouth was examined. As results of field observations, it was confirmed that the winds in the northwest greatly contributed to the recovery of salinity. The variation of salinity at the bottom layer was small both in summer and in winter was also clarified. As results of the numerical simulations, it was clarified that the topography changes at the river mouth influenced on the process of salinity recovering. In particular, the river-mouth bar greatly affects the salinity environment around Yoshino River mouth.
