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Cumulative history recorded in the depth distribution of radiocesium in sediments deposited on a sandbar

Tanaka, Kazuya ; Kondo, Hiroaki*; Sakaguchi, Aya*; Takahashi, Yoshio*

We collected sediments deposited on a sandbar from the surface to 20 cm in depth in the Abukuma River to clarify the history of radiocesium derived from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. We analyzed the $$^{137}$$Cs concentration in the sediments from size-fractioned samples as well as bulk samples. The results of this study demonstrated that sediment layers deposited on a sandbar retained the cumulative history of the fluvial transport of radiocesium after the FDNPP accident.

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Category:Environmental Sciences

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