Figure 5
Scatter plots of (a) 224Ra versus 223Ra activities and (b) 224Ra/223Ra activity ratios versus salinities in the coasts of Tongyeong (A region) and Yeongdeok (B region) during the summer of 2014. The solid and dashed lines represent the relationships between 224Ra and 223Ra activities in the surface waters of A region and subsurface waters of B region, respectively. The gray filled arrow represents the supply of 224Ra in A region and B region. The red open-circled stations denote the center of the red-tide patches.
