• journal_title：Elements
• Contributor：Yukio Masumoto ; Yasumasa Miyazawa ; Daisuke Tsumune ; Takaki Tsubono ; Takuya Kobayashi ; Hideyuki Kawamura ; Claude Estournel ; Patrick Marsaleix ; Lyon Lanerolle ; Avichal Mehra ; Zulema D. Garraffo
• Publisher：Mineralogical Association of Canada
• Date：2012-
• Format：text/html
• Language：en
• Identifier：10.2113/gselements.8.3.207
• journal_abbrev：ELEMENTS
• issn：1811-5209
• volume：8
• issue：3
• firstpage：207
• section：Articles

Five models have been used to estimate the oceanic dispersion of ¹³⁷Cs from the Fukushima Daiichi nuclear power plant during March and April 2011, following the accident on March 11, 2011. The total discharged activity of ¹³⁷Cs is estimated to be 2 to 15 petabequerels. A weak southward current along the Fukushima coast was responsible for the initial transport direction, while mesoscale eddy-like structures and surface-current systems contributed to dispersion in areas beyond the continental shelf. Most of the discrepancies among the models in April are caused by differences in how the mesoscale current structures off the Ibaraki coast are represented.