Reconstruction of anthropogenic 129I temporal variation in the Japan Sea using a coral core sample
| Autor: | Maki Honda, Tsuyoshi Watanabe, Hiroya Yamano, Tetsuya Matsunaka, Shinya Yamasaki, Kimikazu Sasa, Seiji Hosoya, Aya Sakaguchi, Rui Inaba, Keiichi Sasaki, Tsutomu Takahashi, Keisuke Sueki |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Radionuclide
010504 meteorology & atmospheric sciences Coral Core sample Hermatypic coral General Medicine 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences Pollution TRACER Pacific Area Environmental science Radionuclide contamination Seawater 0105 earth and related environmental sciences |
| Zdroj: | Marine Environmental Research. 142:91-99 |
| ISSN: | 0141-1136 |
| Popis: | The anthropogenic long-lived radionuclide 129I 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 129I as an oceanic tracer in the Northwest Pacific area, specifically in the Japan Sea, the input history of 129I 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 129I/127I ratios in the 1940s were almost at background levels ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect