Distribution of local 137Cs anomalies on the seafloor near the Fukushima Dai-ichi Nuclear Power Plant
書誌事項
- 公開日
- 2013-09
- 権利情報
-
- https://www.elsevier.com/tdm/userlicense/1.0/
- http://creativecommons.org/licenses/by-nc-sa/3.0/
- DOI
-
- 10.1016/j.marpolbul.2013.06.031
- 公開者
- Elsevier BV
この論文をさがす
説明
An estimated 3.5±0.7×10(15) Bq of (137)Cs is thought to have been discharged into the ocean following the melt down at Fukushima Dai-ichi Nuclear Power Plant (F1NPP). While efforts have been made to monitor seafloor radiation levels, the sampling techniques used cannot capture the continuous distribution of radionuclides. In this work, we apply in situ measurement techniques using a towed gamma ray spectrometer to map the continuous distribution of (137)Cs on the seafloor within 20 km of the F1NPP. The results reveal the existence of local (137)Cs anomalies, with levels of (137)Cs an order of magnitude higher than the surrounding seafloors. The sizes of the anomalies mapped in this work range from a few meters to a few hundreds of meters in length, and it is demonstrated that the distribution of these anomalies is strongly influenced by meter scale features of the terrain.
収録刊行物
-
- Marine Pollution Bulletin
-
Marine Pollution Bulletin 74 (1), 344-350, 2013-09
Elsevier BV