干旱区生态环境知识资源中心(Arid): The importance of mountain-block recharge in semiarid basins: An insight from the High-Atlas, Morocco

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DOI	10.1016/j.jhydrol.2024.130818
	The importance of mountain-block recharge in semiarid basins: An insight from the High-Atlas, Morocco
	Bouimouass, Houssne; Tweed, Sarah; Marc, Vincent; Fakir, Younes; Sahraoui, Hamza; Leblanc, Marc
通讯作者	Bouimouass, H
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2024
卷号	631
英文摘要	Mountain-block recharge (MBR), consisting of groundwater inflows from the mountain block into adjacent alluvial aquifers, can be an important source of recharge for groundwater in (semi)arid areas. The present study examined Mountain-Block Recharge (MBR) from the Marrakech High-Atlas Mountain to the adjacent Haouz alluvial aquifer in Morocco, using environmental tracers and endmember mixing analysis (EMMA). The influence of the isotopic altitude effect on rainfall (-0.18 parts per thousand per 100 m for delta O-18) in the mountains allows a distinction between groundwater originating from rainfall recharged at different altitudes. Mean delta O-18 values are heavier at lower altitudes (-5.1 parts per thousand; < 1000 m.a.s.l), compared to medium altitudes (-6.4 parts per thousand; 1000-1500 m.a.s.l), and higher altitudes (-7.6 parts per thousand; >2000 m.a.s.l). Stable isotopes suggest a mountain-aquifer connectivity via two MBR flow pathways: a regional MBR from lower-medium altitudes, and a localised MBR from the foothills. In addition, chloride highlighted a potential origin via regional groundwater flowpath from the lower-medium altitudes where important evaporite deposits are present. Furthermore, samples dominated by lower-medium altitude recharge displayed lower H-3 content, suggesting longer residence times typical of MBR, where mountain front recharge prevails. EMMA illustrated MBR contributions ranging from under 1 % to 98 %, varying by proximity to irrigated areas and streams. Eastern areas showed more significant regional MBR influence than the western due to existing faults, acting as hydrogeologic barriers to MBR. These findings are crucial in defining groundwater recharge origins for protection strategies in water-stressed semi-arid regions. Understanding MBR dynamics and connectivity between mountain blocks and aquifers is pivotal for sustainable groundwater resource management.
英文关键词	Groundwater recharge Semiarid Environmental tracers Mountain-front High-Atlas Morocco
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001182480500001
WOS关键词	MARRAKECH HIGH ATLAS ; TOPOGRAPHIC CONTROLS ; GROUNDWATER-FLOW ; WATER-RESOURCES ; STABLE-ISOTOPES ; CLIMATE ; RIFT ; QUANTIFICATION ; CHEMISTRY ; TRACERS
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404552
推荐引用方式 GB/T 7714	Bouimouass, Houssne,Tweed, Sarah,Marc, Vincent,et al. The importance of mountain-block recharge in semiarid basins: An insight from the High-Atlas, Morocco[J],2024,631.
APA	Bouimouass, Houssne,Tweed, Sarah,Marc, Vincent,Fakir, Younes,Sahraoui, Hamza,&Leblanc, Marc.(2024).The importance of mountain-block recharge in semiarid basins: An insight from the High-Atlas, Morocco.JOURNAL OF HYDROLOGY,631.
MLA	Bouimouass, Houssne,et al."The importance of mountain-block recharge in semiarid basins: An insight from the High-Atlas, Morocco".JOURNAL OF HYDROLOGY 631(2024).