气候变化领域集成服务门户(CCPortal): Vanishing weekly hydropeaking cycles in American and Canadian rivers

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DOI	10.1038/s41467-021-27465-4
	Vanishing weekly hydropeaking cycles in American and Canadian rivers
	Déry S.J.; Hernández-Henríquez M.A.; Stadnyk T.A.; Troy T.J.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Sub-daily and weekly flow cycles termed ‘hydropeaking’ are common features in regulated rivers worldwide. Weekly flow periodicity arises from fluctuating electricity demand and production tied to socioeconomic activity, typically with higher consumption during weekdays followed by reductions on weekends. Here, we propose a weekly hydropeaking index to quantify the 1920–2019 intensity and prevalence of weekly hydropeaking cycles at 500 sites across the United States of America and Canada. A robust weekly hydropeaking signal exists at 1.8% of sites starting in 1920, peaking at 18.9% in 1963, and diminishing to 3.1% in 2019, marking a 21st century decline in weekly hydropeaking intensity. We propose this decline may be tied to recent, above-average precipitation, socioeconomic shifts, alternative energy production, and legislative and policy changes impacting water management in regulated systems. Vanishing weekly hydropeaking cycles may offset some of the prior deleterious ecohydrological impacts from hydropeaking in highly regulated rivers. © 2021, The Author(s).
语种	英语
scopus关键词	alternative energy; index method; precipitation (climatology); river basin; socioeconomic conditions; spatiotemporal analysis; water management; alternative energy; article; Canada; precipitation; prevalence; river; United States; water management; Canada; South America; 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/250554
作者单位	Department of Geography, Earth and Environmental Sciences, University of Northern British Columbia, 3333 University Way, Prince George, BC V2N 4Z9, Canada; Department of Geography, University of Calgary, Calgary, AB T2N 1N4, Canada; Department of Civil Engineering, University of Victoria, Victoria, BC V8W 2Y2, Canada
推荐引用方式 GB/T 7714	Déry S.J.,Hernández-Henríquez M.A.,Stadnyk T.A.,et al. Vanishing weekly hydropeaking cycles in American and Canadian rivers[J],2021,12(1).
APA	Déry S.J.,Hernández-Henríquez M.A.,Stadnyk T.A.,&Troy T.J..(2021).Vanishing weekly hydropeaking cycles in American and Canadian rivers.Nature Communications,12(1).
MLA	Déry S.J.,et al."Vanishing weekly hydropeaking cycles in American and Canadian rivers".Nature Communications 12.1(2021).