Spreading of the Fukushima-derived radiocesium in the North Pacific Ocean and its adjacent seas in the past decade
過去10年間の北太平洋とその周辺海域における福島第一原子力発電所事故由来の放射性セシウムの拡散

Yuichiro Kumamoto
Japan Agency for Marine-Earth Science and Technology
Yuichiro Kumamoto
Japan Agency for Marine-Earth Science and Technology
Dear Kumamoto,
thank you so much for your poster and for all the work behind it.
How much of the released 137Cs (and 134Cs) has been estimated to enter the Arctic Ocean?
Thank you and all the best,
Núria
Dear Nuria,
Thank you for your interest.
I have not estimated yet. But I think that the intrusion to the Arctic Ocean through the Bering Strait is limited because the Fukushima-derived 134Cs has been observed only in the Chukchi Sea where the Bering Strait forms its southernmost limit. As you know, in the Arctic Ocean, there is a large amount of 137Cs derived from the nuclear reprocessing plants in UK and France. Thus, it is hard to estimate the inventory of the Fukushima-derived 137Cs in the Arctic Ocean.
Thank you.