Reconstructing surface ocean circulation with 129I time series recordsfrom corals | |
Chang,CC(Chang,Ching-Chih)[1,2]; Burr, G S(Burr, George S)[1,3]; Jull,A.J.Timothy [1,2]; Russell,J L(Russell,Joellen L.)[2]; Biddulph,D(Biddulph, Dana)[1]; White,L(White,Lara)[1]; Prouty, N G.(Prouty, Nancy G.)[4]; Chen,YG(Chen,Yue-Gau)[5]; Shen,CC(Shen,Chuan-Chou)[5]; Zhou,WJ(Zhou,Weijian)[6]; Lam,DD(Lam,Doan Dinh)[7] | |
2016-10 | |
发表期刊 | Journal of Environmental Radioactivity |
卷号 | 165期号:2016页码:144-150 |
文章类型 | 期刊论文 |
摘要 | The long-lived radionuclide 129I (half-life: 15.7 × 106 yr) is well-known as a useful environmental tracer. At present, the global 129I in surface water is about 1–2 orders of magnitude higher than pre-1960 levels. Since the 1990s, anthropogenic 129I produced from industrial nuclear fuels reprocessing plants has been the primary source of 129I in marine surface waters of the Atlantic and around the globe. Here we present four coral 129I time series records from: 1) Con Dao and 2) Xisha Islands, the South China Sea, 3) Rabaul, Papua New Guinea and 4) Guam. The Con Dao coral 129I record features a sudden increase in 129I in 1959. The Xisha coral shows similar peak values for 129I as the Con Dao coral, punctuated by distinct low values, likely due to the upwelling in the central South China Sea. The Rabaul coral features much more gradual 129I increases in the 1970s, similar to a published record from the Solomon Islands. The Guam coral 129I record contains the largest measured values for any site, with two large peaks, in 1955 and 1959. Nuclear weapons testing was the primary 129I source in the Western Pacific in the latter part of the 20th Century, notably from testing in the Marshall Islands. The Guam 1955 peak and Con Dao 1959 increases are likely from the 1954 Castle Bravo test, and the Operation Hardtack I test is the most likely source of the 1959 peak observed at Guam. Radiogenic iodine found in coral was carried primarily through surface ocean currents. The coral 129I time series data provide a broad picture of the surface distribution and depth penetration of 129I in the Pacific Ocean over the past 60 years. |
DOI | 10.1016/j.jenvrad.2016.09.016 |
收录类别 | SCI |
语种 | 英语 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/5937 |
专题 | 加速器质谱中心 |
作者单位 | 1.NSF-Arizona AMS Laboratory, University of Arizona, Tucson, AZ 85721, USA; 2.Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA; 3.Department of Oceanography, National Sun Yat-Sen University, Kaohsiung, Taiwan; 4.US Geological Survey Pacific Coastal & Marine Science Center, Santa Cruz, CA 95060, USA; 5.Department of Geosciences, National Taiwan University, Taipei, Taiwan; 6.Shaanxi Province Key Laboratory of Accelerator Mass Spectrometry Technology and Application, Institute of Earth Environment, CAS, Xi'an 710043, China; 7.Institute of Geology, Vietnamese Academy of Science and Technology, Hanoi, Viet Nam |
推荐引用方式 GB/T 7714 | Chang,CC,Burr, G S,Jull,A.J.Timothy [1,2],et al. Reconstructing surface ocean circulation with 129I time series recordsfrom corals[J]. Journal of Environmental Radioactivity,2016,165(2016):144-150. |
APA | Chang,CC.,Burr, G S.,Jull,A.J.Timothy [1,2].,Russell,J L.,Biddulph,D.,...&Lam,DD.(2016).Reconstructing surface ocean circulation with 129I time series recordsfrom corals.Journal of Environmental Radioactivity,165(2016),144-150. |
MLA | Chang,CC,et al."Reconstructing surface ocean circulation with 129I time series recordsfrom corals".Journal of Environmental Radioactivity 165.2016(2016):144-150. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Reconstructing surfa(1660KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 请求全文 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论