干旱区生态环境知识资源中心(Arid): Isotope and hydrochemical systematics of groundwater from a multi-tiered aquifer in the central parts of Indo-Gangetic Plains, India Implications for groundwater sustainability and security

Arid

DOI	10.1016/j.scitotenv.2021.147860
	Isotope and hydrochemical systematics of groundwater from a multi-tiered aquifer in the central parts of Indo-Gangetic Plains, India Implications for groundwater sustainability and security
	Keesari, Tirumalesh; Sinha, Uday Kumar; Saha, Dipankar; Dwivedi, S. N.; Shukla, Rajeev Ranjan; Mohokar, Hemant; Roy, Annadasankar
通讯作者	Saha, D (corresponding author), Manab Rachna Int Inst Res & Studies, Faridabad, India.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	789
英文摘要	The Indo-Gangetic multi-aquifer system provides water supplies to the most populous regions of the Indian subcontinent, however precise knowledge on the sources and dynamics of groundwater is still missing. Environmental isotopes (H-2, O-18, C-13, H-3 and C-14) and hydrochemical modeling tools were used in this study in the multi-tiered aquifers underlying the Middle Gangetic Plains (MGP) to investigate the source of recharge, aquifer dynamics and inter-connectivity among aquifers. Within a depth span of 300 m, three aquifers, with contrasting recharge sources and dynamics, were delineated in this Sone-Ganga-Punpun interfluve region, with limited cross-aquifer hydraulic interconnections. The chemistry evolves from Ca-HCO3 to Na-Ca-HCO3 in the shallow semiconfined Aquifer-I with a mean transit time of 20-23 years. The dominant recharge to Aquifer-I is from the river inflows and rainwater percolation through paleochannels. The semi-confined to confined Aquifer-II holds fresh quality groundwater with mixed water facies (Mg/Ca-Na-HCO3). The modeled age of Aquifer-II groundwater is found to be 205-520 years, which is supported by presence of negligible tritium and minor variations in stable isotopes. Outcrop regions of Aquifer-II sediments in the marginal alluvial areas and deep-seated paleochannels in the southwestern part are the potential zones for Aquifer-II recharge. A deep confined Aquifer-III with fresh quality of groundwater is identified below 220 m. This aquifer is characterized by old age (similar to 3.5 to 4.7 ka BP) and enriched delta O-18 (-5.7 parts per thousand). These results along with the existing paleoclimate records of this region infer that Aquifer-III is recharged during an arid climate. The marginal alluvial plains are the probable recharge zones for Aquifer-III. This study helped in conceptualizing the groundwater flow paths in multi-tiered aquifers of MGP. The knowledge and understanding would extend crucial inputs for the sustainable development of deep aquifers not only in the MGP but also in other regions of Indo-Gangetic Plains. (C) 2021 Elsevier B.V. All rights reserved.
英文关键词	Geochemistry Water isotopes Aquifer sustainability Multi-tiered aquifer Isotope dating
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000679813100013
WOS关键词	MIDDLE GANGA PLAIN ; NORTHWEST INDIA ; RECHARGE ; BASIN ; VULNERABILITY ; RADIOCARBON ; MONSOON ; MODELS ; ORIGIN ; CARBON
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368437
作者单位	[Keesari, Tirumalesh; Sinha, Uday Kumar; Mohokar, Hemant; Roy, Annadasankar] Bhabha Atom Res Ctr, Isotope & Radiat Applicat Div, Mumbai, Maharashtra, India; [Keesari, Tirumalesh; Roy, Annadasankar] Homi Bhabha Natl Inst, Mumbai, Maharashtra, India; [Dwivedi, S. N.] Cent Groundwater Board, Faridabad, India; [Shukla, Rajeev Ranjan] Rajiv Gandhi Natl Ground Water Training & Res Ins, Raipur, Chhattisgarh, India; [Saha, Dipankar] Manab Rachna Int Inst Res & Studies, Faridabad, India
推荐引用方式 GB/T 7714	Keesari, Tirumalesh,Sinha, Uday Kumar,Saha, Dipankar,et al. Isotope and hydrochemical systematics of groundwater from a multi-tiered aquifer in the central parts of Indo-Gangetic Plains, India Implications for groundwater sustainability and security[J],2021,789.
APA	Keesari, Tirumalesh.,Sinha, Uday Kumar.,Saha, Dipankar.,Dwivedi, S. N..,Shukla, Rajeev Ranjan.,...&Roy, Annadasankar.(2021).Isotope and hydrochemical systematics of groundwater from a multi-tiered aquifer in the central parts of Indo-Gangetic Plains, India Implications for groundwater sustainability and security.SCIENCE OF THE TOTAL ENVIRONMENT,789.
MLA	Keesari, Tirumalesh,et al."Isotope and hydrochemical systematics of groundwater from a multi-tiered aquifer in the central parts of Indo-Gangetic Plains, India Implications for groundwater sustainability and security".SCIENCE OF THE TOTAL ENVIRONMENT 789(2021).