干旱区生态环境知识资源中心(Arid): Understanding long-term groundwater flow at Pahute Mesa and vicinity, Nevada National Security Site, USA, from naturally occurring geochemical and isotopic tracers

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DOI	10.1007/s10040-021-02397-x
	Understanding long-term groundwater flow at Pahute Mesa and vicinity, Nevada National Security Site, USA, from naturally occurring geochemical and isotopic tracers
	Kwicklis, Edward; Farnham, Irene; Hershey, Ronald L.; Visser, Ate; Iii, John Hoaglund
通讯作者	Kwicklis, E (corresponding author), Los Alamos Natl Lab, EES 16,MS T003, Los Alamos, NM 87545 USA.
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2021-09
英文摘要	Recently collected naturally occurring geochemical and isotopic groundwater tracers were combined with historic data from the Pahute Mesa area of the Nevada National Security Site (NNSS), Nevada, USA, to provide insights into long-term regional groundwater flow patterns, mixing and recharge. Pahute Mesa was the site of 85 nuclear detonations between 1965 and 1992, many of them deeply buried devices that introduced radionuclides directly into groundwater. The dataset examined included major ions and field measurements, stable isotopes of hydrogen (delta H-2), oxygen (delta O-18), carbon (delta C-13) and sulfur (delta S-34), and radioisotopes of carbon (C-14) and chloride (Cl-36). Analysis of the patterns of groundwater C-14 data and the delta H-2 and delta O-18 signatures indicates that groundwater recharge is predominantly of Pleistocene age, except for a few localized areas near major ephemeral drainages. Steep gradients in sulfate (SO4) and chloride (Cl) define a region near the western edge of the NNSS where high-concentration groundwater flowing south from north of the NNSS merges with dilute groundwater flowing west from eastern Pahute Mesa in a mixing zone that coincides with a groundwater trough associated with major faults. The Cl-36/Cl and delta S-34 data suggest that the source of the high Cl and SO4 in the groundwater was a now-dry, pluvial-age playa lake north of the NNSS. Patterns of groundwater flow indicated by the combined data sets show that groundwater is flowing around the northwest margin of the now extinct Timber Mountain Caldera Complex toward regional discharge areas in Oasis Valley.
英文关键词	Geochemistry Groundwater isotopes Nuclear test site Pluvial groundwater USA
类型	Article ; Early Access
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000698115300003
WOS关键词	SOUTHERN GREAT-BASIN ; YUCCA MOUNTAIN ; DEVILS-HOLE ; CL-36 ; PRECIPITATION ; CARBONATE ; RECORD
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	Desert Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363531
作者单位	[Kwicklis, Edward] Los Alamos Natl Lab, EES 16,MS T003, Los Alamos, NM 87545 USA; [Farnham, Irene] Navarro, Las Vegas, NV 89106 USA; [Hershey, Ronald L.] Desert Res Inst, Reno, NV 89512 USA; [Visser, Ate] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA; [Iii, John Hoaglund] Provenance Geosci, Las Vegas, NV 89128 USA
推荐引用方式 GB/T 7714	Kwicklis, Edward,Farnham, Irene,Hershey, Ronald L.,et al. Understanding long-term groundwater flow at Pahute Mesa and vicinity, Nevada National Security Site, USA, from naturally occurring geochemical and isotopic tracers[J]. Desert Research Institute,2021.
APA	Kwicklis, Edward,Farnham, Irene,Hershey, Ronald L.,Visser, Ate,&Iii, John Hoaglund.(2021).Understanding long-term groundwater flow at Pahute Mesa and vicinity, Nevada National Security Site, USA, from naturally occurring geochemical and isotopic tracers.HYDROGEOLOGY JOURNAL.
MLA	Kwicklis, Edward,et al."Understanding long-term groundwater flow at Pahute Mesa and vicinity, Nevada National Security Site, USA, from naturally occurring geochemical and isotopic tracers".HYDROGEOLOGY JOURNAL (2021).