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| Title | Reconstruction of anthropogenic I-129 temporal variation in the Japan Sea | |
|---|---|---|
| Author 1 | Aya Sakaguchi |
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| Author 2 | Rui Inaba | |
| Author 3 | Kimikazu Sasa | |
| Author 4 | Tetsuya Matsunaka | |
| Authors 5- | Seiji Hosoya, Tsutomu Takahashi, Maki Honda, Hiroya Yamano, Keiichi Sasaki, Shinya Yamasaki, Tsuyoshi Watanabe, Keisuke Sueki | |
| Subject | Land Surface | |
| Subject_sub1 | ||
| Subject_sub2 | ||
| Abstract | The anthropogenic long-lived radionuclide I-129 is receiving increased attraction as a new oceanic tracer in addition to usage as a fingerprint of radionuclide contamination of the marine environment. To demonstrate the robustness of I-129 as an oceanic tracer in the Northwest Pacific area, specifically in the Japan Sea, the input history of I-129 to surface seawater was reconstructed using a hermatypic coral core sample from Iki Island in the Tsushima Strait. Iodine isotopes in each annual band were measured using AMS and ICP-MS after appropriate pre-treatments of small amounts of coral powder.The I-129/U-236 ratios over the observation period were also reconstructed to help constraining sources of I-129 to the marine environment. | |
| Temporal coverage | 1941 - 2011 | |
| Spatial coverage | 33.8063 N, 129.6675 E | |
| File format | Delimited | |
| Language | English | |
| Discovery metadata record | ||
| Publisher | Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba | |
| Publication year | 2025 | |
| Publication date | March 30th | |
| Digital Object Identifier (DOI) | 10.34355/CRiES.U.Tsukuba.00289 Data Download (9KB) | |
| Short DOI | ||
| Citation text | Sakaguchi, A., Inaba, R., Sasa, K., Matsunaka, T., Hosoya, S., Takahashi, T., Honda, M., Yamano, H., Sasaki, K., Yamasaki, S., Watanabe, T., & Sueki, K. (2025). Reconstruction of anthropogenic I-129 temporal variation in the Japan Sea [Dataset]. Center for Research in Radiation, Isotopes, and Earth System Sciences, University of Tsukuba. https://doi.org/10.34355/CRiES.U.Tsukuba.00289 Sakaguchi, A., Inaba, R., Sasa, K., Matsunaka, T., Hosoya, S., Takahashi, T., Honda, M., Yamano, H., Sasaki, K., Yamasaki, S., Watanabe, T., & Sueki, K. (2018). Reconstruction of anthropogenic I-129 temporal variation in the Japan Sea using a coral core sample. Mar Environ Res, 142, 91-99. https://doi.org/10.1016/j.marenvres.2018.09.003 | |
| Serial at center | 00289 | |
| Serial at each Univ./Institute | TSUK0063 | |
| Key word 1 | I-129 | |
| Key word 2 | Japan Sea | |
| Key word 3 | coral core | |
| Key word 4 | AMS | |
| Key word 5 | I-129/U-236 ratio | |
| Remarks | ||