Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation
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. Re...
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Language: | English |
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Online Access: | http://ir.ieecas.cn/handle/361006/10951 https://doi.org/10.1016/j.scitotenv.2018.10.248 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/10951 2023-06-11T04:15:02+02:00 Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation Wang, JL (Wang, Jinlong) Fan, YK (Fan, Yukun) Liu, DT (Liu, Dantong) Lu, T (Lu, Tong) Hou, XL (Hou, Xiaolin) Du, JZ (Du, Jinzhou) 2019-02-20 http://ir.ieecas.cn/handle/361006/10951 https://doi.org/10.1016/j.scitotenv.2018.10.248 英语 eng ELSEVIER SCIENCE BV SCIENCE OF THE TOTAL ENVIRONMENT http://ir.ieecas.cn/handle/361006/10951 doi:10.1016/j.scitotenv.2018.10.248 null I-129/I-127 Vertical profile Water mass Mixing process Marginal sea ANTHROPOGENIC I-129 NUCLEAR ACTIVITIES WATER MASSES PACIFIC WATERS NORTH-ATLANTIC FUKUSHIMA SEAWATER IODINE SPECIATION Environmental Sciences & Ecology Environmental Sciences 期刊论文 2019 ftchinacascieeca https://doi.org/10.1016/j.scitotenv.2018.10.248 2023-05-08T13:23:55Z 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. Report North Atlantic Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Fukushima Pacific Science of The Total Environment 652 177 188 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
I-129/I-127 Vertical profile Water mass Mixing process Marginal sea ANTHROPOGENIC I-129 NUCLEAR ACTIVITIES WATER MASSES PACIFIC WATERS NORTH-ATLANTIC FUKUSHIMA SEAWATER IODINE SPECIATION Environmental Sciences & Ecology Environmental Sciences |
spellingShingle |
I-129/I-127 Vertical profile Water mass Mixing process Marginal sea ANTHROPOGENIC I-129 NUCLEAR ACTIVITIES WATER MASSES PACIFIC WATERS NORTH-ATLANTIC FUKUSHIMA SEAWATER IODINE SPECIATION Environmental Sciences & Ecology Environmental Sciences Wang, JL (Wang, Jinlong) Fan, YK (Fan, Yukun) Liu, DT (Liu, Dantong) Lu, T (Lu, Tong) Hou, XL (Hou, Xiaolin) Du, JZ (Du, Jinzhou) Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
topic_facet |
I-129/I-127 Vertical profile Water mass Mixing process Marginal sea ANTHROPOGENIC I-129 NUCLEAR ACTIVITIES WATER MASSES PACIFIC WATERS NORTH-ATLANTIC FUKUSHIMA SEAWATER IODINE SPECIATION Environmental Sciences & Ecology Environmental Sciences |
description |
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. |
format |
Report |
author |
Wang, JL (Wang, Jinlong) Fan, YK (Fan, Yukun) Liu, DT (Liu, Dantong) Lu, T (Lu, Tong) Hou, XL (Hou, Xiaolin) Du, JZ (Du, Jinzhou) |
author_facet |
Wang, JL (Wang, Jinlong) Fan, YK (Fan, Yukun) Liu, DT (Liu, Dantong) Lu, T (Lu, Tong) Hou, XL (Hou, Xiaolin) Du, JZ (Du, Jinzhou) |
author_sort |
Wang, JL (Wang, Jinlong) |
title |
Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
title_short |
Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
title_full |
Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
title_fullStr |
Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
title_full_unstemmed |
Spatial and vertical distribution of I-129 and I-127 in the East China Sea: Inventory, source and transportation |
title_sort |
spatial and vertical distribution of i-129 and i-127 in the east china sea: inventory, source and transportation |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2019 |
url |
http://ir.ieecas.cn/handle/361006/10951 https://doi.org/10.1016/j.scitotenv.2018.10.248 |
geographic |
Fukushima Pacific |
geographic_facet |
Fukushima Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
SCIENCE OF THE TOTAL ENVIRONMENT http://ir.ieecas.cn/handle/361006/10951 doi:10.1016/j.scitotenv.2018.10.248 |
op_rights |
null |
op_doi |
https://doi.org/10.1016/j.scitotenv.2018.10.248 |
container_title |
Science of The Total Environment |
container_volume |
652 |
container_start_page |
177 |
op_container_end_page |
188 |
_version_ |
1768371513986121728 |