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Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation
Wang, JL (Wang, Jinlong)1; Fan, YK (Fan, Yukun)2; Liu, DT (Liu, Dantong)1; Lu, T (Lu, Tong)2; Hou, XL (Hou, Xiaolin)2,3; Du, JZ (Du, Jinzhou)1
2019-02-20
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
Volume652Pages:177-188
Contribution Rank2
AbstractIodirne-129 is useful for tracking water mass movement in the ocean. In this study, the concentration of iodine isotopes in seawater of the East China Sea (ECS) in October 2013 were analyzed to investigate the spatial and vertical distribution of I-129 and I-127 to understand water mass exchange. Results showed that the I-129/I-127 atomic ratios varied with the water mass, with higher values of (10-20) x 10(-11) in the coastal regions and lower values of <8 x 10(-11) offshore. Inventories of I-129 were estimated to be (0.23-1.7) x 10(12) atoms m(-2) (n = 18) in upper 100 m waters, which is comparable to those of other regions without being contaminated by the nuclear accidents or nuclear reprocessing facilities. The total amount of I-129 in the ECS water column was estimated to be 88 g in which over 90% is attributed to the oceanic input (e.g., West Pacific) via the Kuroshio Current (KC). The contributions of I-129 from Changjiang (Yangtze River) terrestrial watershed (<7.5%) and atmospheric fallout (<2.7%) were small. Those from the Fukushima accident were negligible during this investigation. The I-129/I-127 ratios versus salinity distribution showed the range and stratification of the Changjiang, Yellow Sea, and KC waters in the ECS. Our study shows that the Changjiang fresh water could be transported to the North Jiangsu coast in October; the Taiwan Warm Current water could intrude to Northern part of the Changjiang Estuary (32 degrees N). Besides, our results suggest that the I-129/I-127 profile is useful to indicate the seawater mixing process in ocean marginal systems.
KeywordI-129/I-127 Vertical profile Water mass Mixing process Marginal sea
Indexed BySCI ; SCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10951
Collection加速器质谱中心
Corresponding AuthorDu, JZ (Du, Jinzhou)
Affiliation1.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China;
2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian AMS Ctr, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China;
3.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark
Recommended Citation
GB/T 7714
Wang, JL ,Fan, YK ,Liu, DT ,et al. Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,652:177-188.
APA Wang, JL ,Fan, YK ,Liu, DT ,Lu, T ,Hou, XL ,&Du, JZ .(2019).Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation.SCIENCE OF THE TOTAL ENVIRONMENT,652,177-188.
MLA Wang, JL ,et al."Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation".SCIENCE OF THE TOTAL ENVIRONMENT 652(2019):177-188.
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