Kumamoto Yuichiro, Aoyama Michio, Hamajima Yasunori, Nishino Shigeto, Murata Akihiko, Kikuchi Takashi
Research and Development Center for Global Change, Japan Agency for Marine-Earth Science and Technology, 2-15 Natushima-cho, Yokosuka, Kanagawa 237-0061, Japan.
Institute of Environmental Radioactivity, Fukushima University, 1-1 Kanayagawa, Fukushima, Fukushima 960-1296, Japan.
Appl Radiat Isot. 2017 Aug;126:88-92. doi: 10.1016/j.apradiso.2017.02.036. Epub 2017 Feb 27.
We measured radiocesium (Cs and Cs) in seawater from the western subarctic area of the North Pacific Ocean, Bering Sea, and Arctic Ocean in 2013 and 2014. Fukushima-derived Cs in surface seawater was observed in the western subarctic area and Bering Sea but not in the Arctic Ocean. Vertical profile of Cs in the Canada Basin of the Arctic Ocean implies that Fukushima-derived Cs intruded into the basin from the Bering Sea through subsurface (150m depth) in 2014.
2013年和2014年，我们测量了北太平洋亚北极西部地区、白令海和北冰洋海水中的放射性铯（¹³⁴Cs和¹³⁷Cs）。在亚北极西部地区和白令海的表层海水中观测到了源自福岛的¹³⁷Cs，但在北冰洋未观测到。北冰洋加拿大海盆中¹³⁷Cs的垂直分布表明，2014年源自福岛的¹³⁷Cs通过150米深度的次表层从白令海侵入了该海盆。
