Density Structure and flow Pattern in the Mouth of Mutsu Bay

Abstract

The three-dimensional velocities, salinity and temperature were measured at the mouth of Mutsu Bay in a spring tide by using ADCP's and STD's. The crosssectional distributions of velocities depict complicated flow patterns depending on tidal cycle and density field. There are no uniform velocity in the vertical direction. One tidal-averaged residual flow and density also indicated that the velocity fluctuations are affected by stratification and the earth's rotation. Their vertical profiles clarity existence of an internal wave in the longitudinal direction across the bay's mouth.