气候变化领域集成服务门户(CCPortal): Long-term groundwater recharge rates across India by in situ measurements

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DOI	10.5194/hess-23-711-2019
	Long-term groundwater recharge rates across India by in situ measurements
	Bhanja S.N.; Mukherjee A.; Rangarajan R.; Scanlon B.R.; Malakar P.; Verma S.
发表日期	2019
ISSN	1027-5606
起始页码	711
结束页码	722
卷号	23 期号:2
英文摘要	Groundwater recharge sustains groundwater discharge, including natural discharge through springs and the base flow to surface water as well as anthropogenic discharge through pumping wells. Here, for the first time, we compute long-term (1996-2015) groundwater recharge rates using data retrieved from several groundwater-level monitoring locations across India (3.3 million km 2 area), the most groundwater-stressed region globally. Spatial variations in groundwater recharge rates (basin-wide mean: 17 to 960 mm yr -1 ) were estimated in the 22 major river basins across India. The extensive plains of the Indus-Ganges-Brahmaputra (IGB) river basins are subjected to prevalence of comparatively higher recharge. This is mainly attributed to occurrence of coarse sediments, higher rainfall, and intensive irrigation-linked groundwater-abstraction inducing recharge by increasing available groundwater storage and return flows. Lower recharge rates (200 mm yr -1 ) in most of the central and southern study areas occur in cratonic, crystalline fractured aquifers. Estimated recharge rates have been compared favorably with field-scale recharge estimates (52) based on tracer (tritium) injection tests. Results show that precipitation rates do not significantly influence groundwater recharge in most of the river basins across India, indicating human influence in prevailing recharge rates. The spatial variability in recharge rates could provide critical input for policymakers to develop more sustainable groundwater management in India. © 2019 Author(s).
语种	英语
scopus关键词	Aquifers; Digital storage; Groundwater flow; Groundwater resources; Hydrogeology; Rivers; Water conservation; Water management; Watersheds; Anthropogenic discharge; Ground water discharge; Ground water recharge; Groundwater abstraction; In-situ measurement; Monitoring locations; Precipitation rates; Sustainable groundwater management; Recharging (underground waters); aquifer; baseflow; discharge; groundwater; groundwater abstraction; in situ measurement; precipitation (chemistry); recharge; river basin; surface water; water management; India
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159768
作者单位	Bhanja, S.N., Department of Geology and Geophysics, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India, Faculty of Science and Technology, Athabasca University, Athabasca, AB T9S3A3, Canada; Mukherjee, A., Department of Geology and Geophysics, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India, School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India, Applied Policy Advisory for Hydrogeoscience (APAH) Group, Indian Institute of Technology Kharagpur, West Bengal, 721302, India; Rangarajan, R., National Geophysical Research Institute, Uppal Road, Hyderabad, 500 007, India; Scanlon, B.R., Bureau of Economic Geology, Jackson School of Geosciences, University of Texas at Austin, Austin, TX 78713, United States; Malakar, P., Department of Geology and Geophysics, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India; Verma, S., Department of Civil Engineeri...
推荐引用方式 GB/T 7714	Bhanja S.N.,Mukherjee A.,Rangarajan R.,et al. Long-term groundwater recharge rates across India by in situ measurements[J],2019,23(2).
APA	Bhanja S.N.,Mukherjee A.,Rangarajan R.,Scanlon B.R.,Malakar P.,&Verma S..(2019).Long-term groundwater recharge rates across India by in situ measurements.Hydrology and Earth System Sciences,23(2).
MLA	Bhanja S.N.,et al."Long-term groundwater recharge rates across India by in situ measurements".Hydrology and Earth System Sciences 23.2(2019).