Fig. 3From: Model depiction of the atmospheric flows of radioactive cesium emitted from the Fukushima Daiichi Nuclear Power Station accidentPlumes identified by Tsuruta et al. (2014). Horizontal bars show the period with high 137Cs concentrations (>10 Bq m−3). Closed and open circles indicate areas in the Hamadori, Nakadori, and Kantou regions where the concentrations were larger or smaller, respectively, than 100 Bq m−2 Back to article page