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Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China

文献类型：期刊论文

作者Zhou, Kang'en2,3; Xu, Hai4; Lan, Jianghu2; Yan, Dongna2,3; Sheng, Enguo1; Yu, Keke5; Song, Yunping4; Zhang, Jin4; Fu, Pingqing4; Xu, Sheng4
刊名FRONTIERS IN EARTH SCIENCE
出版日期2020-01-22
卷号7页码:11
关键词C-14 reservoir age hydroclimate change late Holocene Lake Bosten arid central Asia
DOI10.3389/feart.2019.00328
通讯作者Xu, Hai(xuhai@tju.edu.cn)
英文摘要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.
WOS关键词ARID CENTRAL-ASIA ; TIBETAN PLATEAU ; QINGHAI LAKE ; CLIMATE-CHANGE ; VARIABILITY ; SEDIMENTS ; EXAMPLES ; XINJIANG ; HISTORY ; MONSOON
资助项目National Natural Science Foundation of China[41672169] ; National Natural Science Foundation of China[41761144070]
WOS研究方向Geology
语种英语
WOS记录号WOS:000511382400001
出版者FRONTIERS MEDIA SA
资助机构National Natural Science Foundation of China
源URL[http://ir.ieecas.cn/handle/361006/12833]  
专题地球环境研究所_现代环境研究室
通讯作者Xu, Hai
作者单位1.Zunyi Normal Univ, Coll Resources & Environm, Zunyi, Guizhou, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
3.Univ Chinese Acad Sci, Inst Surface Earth Syst Sci, Beijing, Peoples R China
4.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, 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.

入库方式： OAI收割

来源：地球环境研究所

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