Figure 2

The lateral distribution of ¹³⁷Cs activity (Bq m⁻³) in seawater (a) and in sediment (Bq kg⁻¹) (b) of the China Seas. ¹³⁷Cs data are cited from previous studies (East China Sea^{5,13,24,25,26,31,44,45,49}; South China Sea^{6,12,13,28,30,71}; Yellow Sea^14,26,27,29). This figure was drawn using the free software Ocean Data View (ODV 5.1.2) (Schlitzer, R., Ocean Data View, https://odv.awi.de, 2018).