气候变化领域集成服务门户(CCPortal): Declining groundwater and its impacts along Ganga riverfronts using combined Sentinel-1, GRACE, water levels, and rainfall data

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DOI	10.1016/j.scitotenv.2024.170932
	Declining groundwater and its impacts along Ganga riverfronts using combined Sentinel-1, GRACE, water levels, and rainfall data
	Raju, Ashwani; Singh, Ramesh P.; Kannojiya, Praveen Kumar; Patel, Abhinav; Singh, Saurabh; Sinha, Mitali
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	920
卷号	920
英文摘要	The Indo-Gangetic Plains (IGP) in northern India are vast alluvial tracts with huge shallow aquifers, densely populated and agriculturally productive regions. In the last few decades, IGP has been facing water scarcity driven by erratic monsoon dynamics, anthropogenic activity, and hydroclimatic variability. In urban centers, continuous groundwater withdrawal leads to high stress, affecting surface deformation and a threat to buildings and infrastructures. An attempt has been made to explore the possible linkage and coupling between groundwater level, hydroclimatic variables, and subsidence in the Central Ganga Plains (CGP), in Varanasi metropolis using the combined multisensory multitemporal data, Sentinel-1 (2017-2023), GRACE (2003-2023), groundwater levels (1998-2023), and precipitation (2002-2023). Long-term hydrological response in the CGP shows continuous depletion (14.6 +/- 5.6 mm/yr) in response to precipitation variability. Results show spatiotemporal variations between GWS, and precipitation estimate with nonlinear trend response due to associated interannual/inter-seasonal climate variability and anthropogenic water withdrawal, specifically during the observed drought years. The significant storage response in the urban center compared to a regional extent suggests the potential impact of exponentially increasing urbanization and building hydrological stress in the cities. The implications of reducing storage capacity show measured land subsidence (-2-8 mm/yr) patterns developed along the meandering stretch of the Ganga riverfronts in Varanasi. The groundwater level data from the piezometric supports the hydroclimatic variables and subsidence coupling. Considering the vital link between water storage, food security, and socioeconomic growth, the results of this study require systematic inclusion in water management strategies as climate change seriously impacts water resources in the future.
英文关键词	Ganga Alluvial Plain (GAP); Groundwater storage (GWS); Precipitation; Land subsidence; Ganga riverfronts ( Ghats ); Persistent Scatterer Interferometry (PSI)
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001199009200001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290028
作者单位	Banaras Hindu University (BHU); Chapman University System; Chapman University; Banaras Hindu University (BHU)
推荐引用方式 GB/T 7714	Raju, Ashwani,Singh, Ramesh P.,Kannojiya, Praveen Kumar,et al. Declining groundwater and its impacts along Ganga riverfronts using combined Sentinel-1, GRACE, water levels, and rainfall data[J],2024,920.
APA	Raju, Ashwani,Singh, Ramesh P.,Kannojiya, Praveen Kumar,Patel, Abhinav,Singh, Saurabh,&Sinha, Mitali.(2024).Declining groundwater and its impacts along Ganga riverfronts using combined Sentinel-1, GRACE, water levels, and rainfall data.SCIENCE OF THE TOTAL ENVIRONMENT,920.
MLA	Raju, Ashwani,et al."Declining groundwater and its impacts along Ganga riverfronts using combined Sentinel-1, GRACE, water levels, and rainfall data".SCIENCE OF THE TOTAL ENVIRONMENT 920(2024).