137Cs and 90Sr in surface waters of the Sea of Japan: Variations and the Fukushima Dai-ichi Nuclear Power Plant accident impact
2019
Hirose, Katsumi | Povinec, P.
⁹⁰Sr and ¹³⁷Cs activity concentrations in surface waters of the Sea of Japan (SOJ) decreased during the period of 1993–2010 with effective half-lives of 18 and 15 y, respectively. The longer effective half-life of ⁹⁰Sr in the SOJ may suggest a surplus of ⁹⁰Sr to SOJ surface waters, however, no clear evidence of possible ⁹⁰Sr source has been found. After the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, temporal variations of ¹³⁷Cs in the surface water of the SOJ have changed, while ⁹⁰Sr variations followed the pre-accident trends. The ⁹⁰Sr/¹³⁷Cs ratios reveal that increases of ¹³⁷Cs due to the FDNPP accident continued in surface waters of the SOJ until 2016.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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