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

doi:10.3389/feart.2019.00328

	Variable Late Holocene C-14 Reservoir Ages in Lake Bosten, Northwestern China
	Zhou, Kang'en 1,5; Xu, Hai 4; Lan, Jianghu 1; Yan, Dongna 1,5; Sheng, Enguo 3; Yu, Keke 2; Song, Yunping 4; Zhang, Jin 4; Fu, Pingqing 4; Xu, Sheng 4
刊名	FRONTIERS IN EARTH SCIENCE
	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
DOI	10.3389/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.
资助项目	National Natural Science Foundation of China[41672169] ; National Natural Science Foundation of China[41761144070]
WOS关键词	ARID CENTRAL-ASIA ; TIBETAN PLATEAU ; QINGHAI LAKE ; CLIMATE-CHANGE ; VARIABILITY ; SEDIMENTS ; EXAMPLES ; XINJIANG ; HISTORY ; MONSOON
WOS研究方向	Geology
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000511382400001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
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.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China 2.Baoji Univ Arts & Sci, Key Lab Disaster Monitoring & Mech Simulating Sha, Baoji, Peoples R China 3.Zunyi Normal Univ, Coll Resources & Environm, Zunyi, Guizhou, Peoples R China 4.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin, Peoples R China 5.Univ Chinese Acad Sci, Inst Surface Earth Syst Sci, Beijing, 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.