Time Series of Measured 137Cs Activities in Surface Seawater (IMAGE)
Caption
Figure 2 Time series of measured 137Cs activities in surface seawater (circles) overlain on model-derived predictions (Tsubono et al. 2016) that includes 137Cs levels from before the Fukushima Daiichi nuclear power plant releases. The color bar applies to both the observations and the model-derived predictions. The observations are from the Historical Artificial Radionuclides in the Pacific Ocean and Its Marginal Seas (HAM) database (Aoyama & Hirose 2004) and updates to that database (Buesseler et al. 2012; UNSCEAR 2014; IAEA 2015b, extracted and provided by P.J. Morris in March 2016; Yoshida et al. 2015; Aoyama et al. 2016), as well as unpublished data from J.N. Smith and Our Radioactive Ocean (http://ourradioactiveocean.org/results).
Credit
Michio Aoyama
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