Abstract
The cold water region in the offing of Enshfmada is generated by the overflow of the intermediate water upwelling in the sea off the coast of Tôkaidô. And when the Kuroshio is strong, the overflowing of the intermediate water is stopped and the cold water region is pushed away and disappear. From the mean values of actual sounding, no cold water region can be seen when the maximum velocity of the Kuroshio is larger than 2.5 knots.
