干旱区生态环境知识资源中心(Arid): Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)

Arid

DOI	10.3390/hydrology5010003
	Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)
	Scheihing, Konstantin W.; Moya, Claudio E.; Struck, Ulrich; Lictevout, Elisabeth; Troeger, Uwe
通讯作者	Scheihing, KW
来源期刊	HYDROLOGY
ISSN	2306-5338
出版年	2018
卷号	5 期号:1
英文摘要	A collection of 514 stable isotope water samples from the Atacama Desert is being reassessed geostatistically. The evaluation reveals that adjacent Andean catchments can exhibit distinct delta O-18 and delta H-2 value ranges in meteoric waters, despite similar sample altitudes of up to 4000 m above sea level (a.s.l.). It is proposed that the individual topographic features of each catchment at the western Andean Precordillera either inhibit or facilitate vapor mixing processes of easterly and westerly air masses with different isotopic compositions. This process likely causes catchment-specific isotope value ranges in precipitations (between -7 parts per thousand and -19 parts per thousand delta O-18) that are being consistently reflected in the isotope values of groundwater and surface waters of these catchments. Further, due to evaporation-driven isotopic fractionation and subsurface water mixing, isotope samples of the regional Pampa del Tamarugal Aquifer plot collectively parallel to the local meteoric water line. Besides, there is no evidence for hydrothermal isotopic water-rock interactions. Overall, the observed catchment-dependent isotope characteristics allow for using delta O-18 and delta H-2 as tracers to delineate regionally distinct groundwater compartments and associated recharge areas. In this context, delta O-18, delta H-2 and 3H data of shallow groundwater at three alluvial fans challenge the established idea of recharge from alluvial fans after flash floods.
英文关键词	isotope fractionation Andes arid region vapor mixing recharge mechanisms alluvial fan oxygen-18 Altiplano Pampa del Tamarugal tritium
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	ESCI
WOS记录号	WOS:000455156200003
WOS关键词	PAMPA DEL TAMARUGAL ; REGIONAL AQUIFER ; CLIMATE-CHANGE ; WATER ; PRECIPITATION ; BASIN ; VARIABILITY ; RECHARGE ; FLOW ; DELTA-O-18
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/333197
作者单位	[Scheihing, Konstantin W.; Troeger, Uwe] Tech Univ Berlin, Hydrogeol Res Grp, Dept Appl Geosci, D-10587 Berlin, Germany; [Moya, Claudio E.; Lictevout, Elisabeth] Ctr Invest & Desarrollo Recursos Hidr R0911001, CONICYT Reg CIDERH, Iquique 1100565, Chile; [Moya, Claudio E.] Univ Arturo Prat, Iquique 1110939, Chile; [Moya, Claudio E.] Golder Associates SA, Santiago 7550055, Chile; [Struck, Ulrich] Leibniz Inst Evolut & Biodiversitatsforsch, Museum Nat Kunde, D-10115 Berlin, Germany; [Struck, Ulrich] Free Univ Berlin, Dept Geosci, D-12249 Berlin, Germany; [Lictevout, Elisabeth] Univ Concepcion, Fac Ciencias Forestales, Concepcion 4070374, Chile
推荐引用方式 GB/T 7714	Scheihing, Konstantin W.,Moya, Claudio E.,Struck, Ulrich,et al. Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)[J],2018,5(1).
APA	Scheihing, Konstantin W.,Moya, Claudio E.,Struck, Ulrich,Lictevout, Elisabeth,&Troeger, Uwe.(2018).Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile).HYDROLOGY,5(1).
MLA	Scheihing, Konstantin W.,et al."Reassessing Hydrological Processes That Control Stable Isotope Tracers in Groundwater of the Atacama Desert (Northern Chile)".HYDROLOGY 5.1(2018).