| Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China | |
Zhou, Kang'en1,2; Xu, Hai3; Lan, Jianghu1 ; Yan, Dongna1,2; Sheng, Enguo4; Yu, Keke5; Song, Yunping3; Zhang, Jin3; Fu, Pingqing3; Xu, Sheng3
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| 通讯作者 | Xu, Hai(xuhai@tju.edu.cn) |
| 2020-01-22 | |
| 发表期刊 | FRONTIERS IN EARTH SCIENCE
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| 卷号 | 7页码:11 |
| 摘要 | Radiocarbon (C-14) dating has been widely used in paleoclimate reconstruction. However, the reliability of the C-14 age in lake sediments is sensitive to the C-14 reservoir effect, especially for a lake in arid regions. In this study, we evaluated the C-14 reservoir ages under different hydroclimatic conditions over the past similar to 2300 years in Lake Bosten, northwestern China, by comparing with different dating results and with multi-proxy indices of a vertical-down sediment core collected in this lake. The C-14 reservoir ages during similar to 1800 to 650 BP (a dry interval) are estimated to be approximately 1170 years older than those during similar to 650-100 BP and those during 2200-1800 BP (wet intervals). We proposed that variation in C-14 exchange rate between the dissolved CO2 in lake water and CO2 in the atmosphere, as well as the changing proportion of organic matter in the lake and the catchment, could have contributed to the variable C-14 reservoir ages in Lake Bosten. The result of this study suggests that the C-14 reservoir effect may be larger in dry periods than in wet periods in the arid/semi-arid area, which should be considered when establishing age models of lake sediment cores from these regions. |
| 关键词 | C-14 reservoir age hydroclimate change late Holocene Lake Bosten arid central Asia |
| DOI | 10.3389/feart.2019.00328 |
| 关键词[WOS] | ARID CENTRAL-ASIA ; TIBETAN PLATEAU ; QINGHAI LAKE ; CLIMATE-CHANGE ; VARIABILITY ; SEDIMENTS ; EXAMPLES ; XINJIANG ; HISTORY ; MONSOON |
| 收录类别 | SCI ; SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[41672169] ; National Natural Science Foundation of China[41761144070] |
| WOS研究方向 | Geology |
| 项目资助者 | National Natural Science Foundation of China |
| WOS类目 | Geosciences, Multidisciplinary |
| WOS记录号 | WOS:000511382400001 |
| 出版者 | FRONTIERS MEDIA SA |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ieecas.cn/handle/361006/12834 |
| 专题 | 现代环境研究室 |
| 通讯作者 | Xu, Hai |
| 作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 2.Univ Chinese Acad Sci, Inst Surface Earth Syst Sci, Beijing, Peoples R China 3.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China 4.Zunyi Normal Univ, Coll Resources & Environm, Zunyi, Guizhou, Peoples R China 5.Baoji Univ Arts & Sci, Key Lab Disaster Monitoring & Mech Simulating Sha, Baoji, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Kang'en,Xu, Hai,Lan, Jianghu,et al. Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China[J]. FRONTIERS IN EARTH SCIENCE,2020,7:11. |
| APA | Zhou, Kang'en.,Xu, Hai.,Lan, Jianghu.,Yan, Dongna.,Sheng, Enguo.,...&Xu, Sheng.(2020).Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China.FRONTIERS IN EARTH SCIENCE,7,11. |
| MLA | Zhou, Kang'en,et al."Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China".FRONTIERS IN EARTH SCIENCE 7(2020):11. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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