干旱区生态环境知识资源中心(Arid): Groundwater level trends and recharge event characterization using historical observed data in semi-arid Chile

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DOI	10.1080/02626667.2020.1711912
	Groundwater level trends and recharge event characterization using historical observed data in semi-arid Chile
	Valois, Remi 1,2; MacDonell, Shelley 1,2; Nunez Cobo, Jorge Humberto 3,4; Maureira-Cortes, Hector 3
通讯作者	Valois, Remi
来源期刊	HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
ISSN	0262-6667
EISSN	2150-3435
出版年	2020
卷号	65 期号:4 页码:597-609
英文摘要	Groundwater is an important resource in semi-arid Chile to meet local social, economic and environmental water demands. Historical ground water level (GWL) data (1986-2014) in the Coquimbo Region were analysed to characterize short and long-term alluvial aquifer dynamics. Long-term trends were assessed using a seasonal Mann-Kendall trend test, which indicated that more than 80% of the time series exhibit a negative trend. Short-term analysis using cross-correlation provided information on recharge origin and its spatial pattern. Runoff and GWL are highly correlated depending on elevation, signifying that stream to aquifer flow is an important recharge process at higher altitudes. Long-term recharge behaviour was characterized using time-frequency wavelet power spectra. The results show significant amplitude of the 5-year recharge period for GWL, which is driven by a 5-year El Nino index periodicity. Such results provide key information of the spatiotemporal functioning of aquifers.
英文关键词	hydrogeology trends Chile Andes semi-arid groundwater recharge
类型	Article
语种	英语
国家	Chile
收录类别	SCI-E
WOS记录号	WOS:000507221300001
WOS关键词	NORTH-CENTRAL CHILE ; MOUNTAINOUS CATCHMENT ; CLIMATIC VARIABILITY ; WAVELET TRANSFORM ; WATER-RESOURCES ; SURFACE-WATER ; HUASCO RIVER ; BASIN ; PRECIPITATION ; AVAILABILITY
WOS类目	Water Resources
WOS研究方向	Water Resources
EI主题词	2020-01-13
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312467
作者单位	1.CEAZA, La Serena, Chile; 2.Univ La Serena, La Serena, Chile; 3.Water Ctr Arid & Semiarid Zones Latin Amer & Cari, La Serena, Chile; 4.Univ La Serena, Dept Ingn Minas, La Serena, Chile
推荐引用方式 GB/T 7714	Valois, Remi,MacDonell, Shelley,Nunez Cobo, Jorge Humberto,et al. Groundwater level trends and recharge event characterization using historical observed data in semi-arid Chile[J],2020,65(4):597-609.
APA	Valois, Remi,MacDonell, Shelley,Nunez Cobo, Jorge Humberto,&Maureira-Cortes, Hector.(2020).Groundwater level trends and recharge event characterization using historical observed data in semi-arid Chile.HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES,65(4),597-609.
MLA	Valois, Remi,et al."Groundwater level trends and recharge event characterization using historical observed data in semi-arid Chile".HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES 65.4(2020):597-609.