Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation

doi:10.1016/j.epsl.2019.115990

	Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation
	Gou, Long-Fei 7,8; Jin, Zhangdong 2,6,7; Galy, Albert 9; Gong, Ying-Zeng 1; Nan, Xiao-Yun 1; Jin, Chenyang 3; Wang, Xiao-Dan 3; Bouchez, Julien 4; Cai, Hong-Ming 4; Chen, Jiu-Bin 5
刊名	EARTH AND PLANETARY SCIENCE LETTERS
	2020-02-01
卷号	531 页码:12
关键词	barium isotopes seasonal variation adsorption silicate weathering the Yellow River the Chinese Loess Plateau
ISSN号	0012-821X
DOI	10.1016/j.epsl.2019.115990
通讯作者	Jin, Zhangdong(zhdjin@ieecas.cn)
英文摘要	Barium (Ba) isotopes have been used to trace water mass mixing and export productivity in the oceans. However, the sources, isotopic signature and seasonal variation of dissolved Ba in large rivers remain poorly constrained. In order to improve our understanding of sources and fractionation of riverine Ba isotopes at the continental scale, weekly sampling of river water was carried out in the middle Yellow River over the full hydrological year of 2013. Dissolved Ba was mainly sourced from silicate dissolution, whose flux was correlated with physical erosion rate in this arid to semi-arid basin, largely covered by loess. More than half of the annual dissolved Ba flux was transported during the monsoon season (June to mid-September), in particular during a storm event period (accounting for 4% of the annual dissolved Ba flux in 4 days). The dissolved Ba isotopic composition (delta (138) Ba-rw) ranged from +0.17 parts per thousand to +0.46 parts per thousand, all higher than delta Ba-138 of loess (0.00 +/- 0.04 parts per thousand). The seasonal variation in delta Ba-138(rw) is best explained via an adsorption model of light Ba isotopes onto solids in the river, which is sensitive to erosion of loess, in particular during the storm event and the spring-time ice melting intervals, with a potential role of barite precipitation in groundwater during the dry seasons. With one to three orders of magnitude higher particulate matter fluxes during the monsoon seasons in rivers such as the Yellow River, desorption of Ba could result an unaccounted strong variation of Ba concentration and isotopic composition in coastal environments, which further study requires. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	CAS Strategic Priority Research Program[XDA20070102] ; NSFC Programs[41991322] ; NSFC Programs[41773149] ; NSFC Programs[41625012]
WOS关键词	GREAT-BARRIER-REEF ; DISSOLVED BARIUM ; STABLE-ISOTOPES ; BA ; GEOCHEMISTRY ; PRECIPITATION ; CHEMISTRY ; SEDIMENT ; ATLANTIC ; FLUXES
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000510947100040
资助机构	CAS Strategic Priority Research Program ; NSFC Programs
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12836]
专题	地球环境研究所_加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Jin, Zhangdong
作者单位	1.Univ Sci & Technol China, Chinese Acad Sci, Key Lab Crust Mantle Mat & Environm, Sch Earth & Space Sci, Hefei 230026, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Tongji Univ, Dept Marine Geol, Shanghai 200092, Peoples R China 4.Univ Paris Diderot, Sorbonne Paris Cite, Inst Phys Globe Paris, CNRS,UMR 7154, 1 Rue Jussieu, F-75238 Paris, France 5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China 6.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China 7.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Peoples R China 8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 9.Univ Lorraine, CNRS, UMR7358, Ctr Rech Petrograph & Geochim, F-54500 Vandoeuvre Les Nancy, France
推荐引用方式 GB/T 7714	Gou, Long-Fei,Jin, Zhangdong,Galy, Albert,et al. Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation[J]. EARTH AND PLANETARY SCIENCE LETTERS,2020,531:12.
APA	Gou, Long-Fei.,Jin, Zhangdong.,Galy, Albert.,Gong, Ying-Zeng.,Nan, Xiao-Yun.,...&Huang, Fang.(2020).Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation.EARTH AND PLANETARY SCIENCE LETTERS,531,12.
MLA	Gou, Long-Fei,et al."Seasonal riverine barium isotopic variation in the middle Yellow River: Sources and fractionation".EARTH AND PLANETARY SCIENCE LETTERS 531(2020):12.