气候变化领域集成服务门户(CCPortal): Continental-scale analysis of shallow and deep groundwater contributions to streams

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DOI	10.1038/s41467-021-21651-0
	Continental-scale analysis of shallow and deep groundwater contributions to streams
	Hare D.K.; Helton A.M.; Johnson Z.C.; Lane J.W.; Briggs M.A.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Groundwater discharge generates streamflow and influences stream thermal regimes. However, the water quality and thermal buffering capacity of groundwater depends on the aquifer source-depth. Here, we pair multi-year air and stream temperature signals to categorize 1729 sites across the continental United States as having major dam influence, shallow or deep groundwater signatures, or lack of pronounced groundwater (atmospheric) signatures. Approximately 40% of non-dam stream sites have substantial groundwater contributions as indicated by characteristic paired air and stream temperature signal metrics. Streams with shallow groundwater signatures account for half of all groundwater signature sites and show reduced baseflow and a higher proportion of warming trends compared to sites with deep groundwater signatures. These findings align with theory that shallow groundwater is more vulnerable to temperature increase and depletion. Streams with atmospheric signatures tend to drain watersheds with low slope and greater human disturbance, indicating reduced stream-groundwater connectivity in populated valley settings. © 2021, The Author(s).
语种	英语
scopus关键词	ground water; aquifer; baseflow; buffering; connectivity; dam; discharge; groundwater-surface water interaction; streamflow; thermal regime; water quality; Article; atmosphere; dam (barrier); stream (river); United States; warming; water flow; water temperature; watershed; United States
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/250753
作者单位	Department of Natural Resources and the Environment, University of Connecticut, Storrs, CT, United States; Volunteer, U.S. Geological Survey, Earth Systems Processes Division, Hydrogeophysics Branch, Storrs, CT, United States; Center for Environmental Sciences & Engineering, University of Connecticut, Storrs, CT, United States; U.S. Geological Survey, Washington Water Science Center, Tacoma, WA, United States; U.S. Geological Survey, Earth System Processes Division, Hydrogeophysics Branch, Storrs, CT, United States
推荐引用方式 GB/T 7714	Hare D.K.,Helton A.M.,Johnson Z.C.,et al. Continental-scale analysis of shallow and deep groundwater contributions to streams[J],2021,12(1).
APA	Hare D.K.,Helton A.M.,Johnson Z.C.,Lane J.W.,&Briggs M.A..(2021).Continental-scale analysis of shallow and deep groundwater contributions to streams.Nature Communications,12(1).
MLA	Hare D.K.,et al."Continental-scale analysis of shallow and deep groundwater contributions to streams".Nature Communications 12.1(2021).