Temporal variation of 134Cs and 137Cs activities in surface water at stations along the coastline near the Fukushima Dai-ichi Nuclear Power Plant accident site, Japan

MICHIO AOYAMA, DAISUKE TSUMUNE, MITSUO UEMATSU, FUMIYOSHI KONDO, YASUNORI HAMAJIMA
2012 Geochemical Journal  
heavily damaged and caused radionuclides to be discharged into the atmosphere and ocean (Chino et al., 2011; Tsumune et al., 2011) . In this paper, we focus on the trend of 134 Cs and 137 Cs radioactivities at Hasaki, a coastal station on the east coast of Honshu, and other coastal stations, including the FNPP1 site. Because these stations are located in the densely populated Tohoku and Kanto areas of Honshu, the behaviour of 134 Cs and 137 Cs (radiocaesium) in coastal waters is important for
more » ... is important for understanding the fate of 134 Cs and 137 Cs in the environment. These radionuclides were released from the FNPP1 reactors and directly discharged into the ocean and released into the atmosphere; other minor contributions may have arisen from riverine outflow carrying sediment from contaminated lands. Radiocaesium is a serious concern for people involved in coastal fisheries and seafood safety. METHODS We collected 2-litre surface seawater samples once a
doi:10.2343/geochemj.2.0211 fatcat:wibrtlftcze77hso54ylw5pc3e