干旱区生态环境知识资源中心(Arid): Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran)

Arid

DOI	10.1016/j.gexplo.2022.107029
	Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran)
	Boosalik, Zahra; Jafari, Hadi; Clark, Ian Douglas; Bagheri, Rahim
通讯作者	Jafari, H
来源期刊	JOURNAL OF GEOCHEMICAL EXPLORATION
ISSN	0375-6742
EISSN	1879-1689
出版年	2022
卷号	239
英文摘要	Understanding the origin of groundwater salinity is critical to efficiently manage the scarce water resources in arid regions. In the current research, the source and mechanism of groundwater salinity in the Shahrood aquifer, central Iran, have been assessed using combination of hydrochemical techniques and environmental isotopes. A total of 115 groundwater samples were collected and analyzed for the major and minor ions (HCO3, Cl, SO4, Ca, Mg, Na, K, Br and I) and isotopes (delta O-18 and delta H-2). Based on the results of the chemical approach, halite and gypsum dissolution, Na-silicate weathering and calcite precipitation induced by common-ion effect are the main source of salinity (> 7500 mg/L) in the saline water zone (SWZ) of the Shahrood aquifer. The SWZ groundwaters are more depleted in delta H-2 as compared with fresh water zone (FWZ) samples which plotted on the Shahrood local meteoric water line (SMWL). Development of a groundwater divide line at the central parts of the aquifer causes low velocity and then enhancing the residence time of the SWZ groundwaters mainly originated from isotopic depleted sub-modern precipitations in surrounding high-elevated mountains. Mixing water zone (MWZ) is identified between FWZ and SWZ, where the relative fractions of the saline groundwaters vary in the range of 23-99%. Managing groundwater withdrawals is highly recommended; as the groundwater over-exploitations enhance invasion of the saline groundwaters from SWZ and then overall degradation of the water quality in the aquifer. This is the first model explaining the groundwater salinity source and mechanism of the Shahrood aquifer as a case of mountain-front recharged plain aquifer, providing guidelines for salinity assessments in other arid-land aquifers around the world.
英文关键词	Hydrochemistry Iran Mountain recharge Stable isotope Salinization
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000808523700001
WOS关键词	CHEMICAL-COMPOSITION ; SEAWATER INTRUSION ; CHLORINE ISOTOPES ; STABLE-ISOTOPES ; ATACAMA DESERT ; SURFACE-WATER ; SALINIZATION ; ORIGIN ; QUALITY ; BASIN
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393446
推荐引用方式 GB/T 7714	Boosalik, Zahra,Jafari, Hadi,Clark, Ian Douglas,et al. Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran)[J],2022,239.
APA	Boosalik, Zahra,Jafari, Hadi,Clark, Ian Douglas,&Bagheri, Rahim.(2022).Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran).JOURNAL OF GEOCHEMICAL EXPLORATION,239.
MLA	Boosalik, Zahra,et al."Chemo-isotopic tracing of the groundwater salinity in arid regions: An example of Shahrood aquifer (Iran)".JOURNAL OF GEOCHEMICAL EXPLORATION 239(2022).