太田川デルタを流れる感潮派川での流れ特性

摘要

Corbical Japonica lives in the Ohta Branch Rivers which are effected by sea water movement. In this paper, the variation characteristics of fresh water and sea water in middle area of branch rivers were investigated by measuring salinity and river water level distributions. It is considered that salinity condition in each river depends on the river discharge and sea level, because the level of each river bed is different. As these results, Tenma river environment have became suitable for Corbical Japonica living.