A 60-year record of 129I in Taal Lake sediments (Philippines): Influenceof human nuclear activities at low latitude region
文献类型：期刊论文
| 作者 | Zhang, LY(Zhang, Luyuan)3; Hou, XL(Hou, Xiaolin)2,3; Li, HC(Li, Hongchun)4; Xu, XM(Xu, Xiaomei)1; Hou, Xiaolin |
| 刊名 | Chemosphere
 |
| 出版日期 | 2017-11-23 |
| 卷号 | 193期号:2018页码:1149-1156 |
| 关键词 | OdIne-129 In Sediment Taal Lake Human Nuclear Activities Northeasterly Trade Winds East Asian Winter Monsoon Indicator Of Volcanic Activity |
| DOI | 10.1016/j.chemosphere.2017.11.134 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The influence of human nuclear activities on environmental radioactivity is not well known at low latitude regions that are distant from nuclear test sites and nuclear facilities. A sediment core collected from Taal Lake in the central Philippines was analyzed for 129I and 127I to investigate this influence in a low-latitude terrestrial system. A baseline of 129I/127I atomic ratios was established at (2.04e5.14) * 10-12 in the pre-nuclear era in this region. Controlled by the northeasterly equatorial trade winds, increased 129I/127I ratios of (20.1e69.3) * 10-12 suggest that atmospheric nuclear weapons tests at the Pacific Proving Grounds in the central Pacific Ocean was the major source of 129I in the sediment during 1956-1962. The 129I/127I ratios, up to 157.5*10-12 after 1964, indicate a strong influence by European nuclear fuel reprocessing plants. The East Asian Winter Monsoon is found to be the dominant driving force in the atmospheric dispersion of radioactive iodine (129I) from the European nuclear fuel reprocessing plants to Southeast Asia, which is also important for dispersion of other airborne pollutants from the middle-high to low latitude regions. A significant 129I/127I peak at 42.8 cm in the Taal Lake core appears to be the signal of the Chernobyl accident in 1986. In addition, volcanic activities are reflected in the iodine isotope profiles in the sediment core, suggesting the potential of using iodine isotopes as an indicator of volcanic eruptions. |
| 语种 | 英语 |
| 源URL | [http://ir.ieecas.cn/handle/361006/5250]  |
| 专题 | 地球环境研究所_加速器质谱中心 |
| 通讯作者 | Hou, Xiaolin |
| 作者单位 | 1.Department of Earth System Science, University of California, Irvine, CA 92697, USA 2.Center for Nuclear Technologies, Technical University of Denmark, Risø Campus, Roskilde, 4000, Denmark 3.State Key Laboratory of Loess and Quaternary Geology, Xi'an AMS Center, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061,China 4.Department of Geosciences, National Taiwan University, Taipei, 10617, Taiwan |
| 推荐引用方式 GB/T 7714 | Zhang, LY,Hou, XL,Li, HC,et al. A 60-year record of 129I in Taal Lake sediments (Philippines): Influenceof human nuclear activities at low latitude region[J]. Chemosphere,2017,193(2018):1149-1156. |
| APA | Zhang, LY,Hou, XL,Li, HC,Xu, XM,&Hou, Xiaolin.(2017).A 60-year record of 129I in Taal Lake sediments (Philippines): Influenceof human nuclear activities at low latitude region.Chemosphere,193(2018),1149-1156. |
| MLA | Zhang, LY,et al."A 60-year record of 129I in Taal Lake sediments (Philippines): Influenceof human nuclear activities at low latitude region".Chemosphere 193.2018(2017):1149-1156. |
入库方式： OAI收割
来源：地球环境研究所
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