Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation

	Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation
	Liu, DT (Liu, Dantong)1; Lu, T (Lu, Tong)3; Hou, XL (Hou, Xiaolin)2,3; Du, JZ (Du, Jinzhou)1; Wang, JL (Wang, Jinlong)1; Fan, YK (Fan, Yukun)3
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-02-20
卷号	652 页码:177-188
关键词	I-129/I-127 Vertical profile Water mass Mixing process Marginal sea
产权排序	2
英文摘要	Iodirne-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.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/10951]
专题	地球环境研究所_加速器质谱中心
通讯作者	Du, JZ (Du, Jinzhou)
作者单位	1.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China; 2.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark 3.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian AMS Ctr, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China;
推荐引用方式 GB/T 7714	Liu, DT ,Lu, T ,Hou, XL ,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	Liu, DT ,Lu, T ,Hou, XL ,Du, JZ ,Wang, JL ,&Fan, YK .(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	Liu, DT ,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.