干旱区生态环境知识资源中心(Arid): Seawater Intrusion and Nitrate Contamination in the Fum Al Wad Coastal Plain, South Morocco

Arid

DOI	10.1007/s12583-021-1529-5
	Seawater Intrusion and Nitrate Contamination in the Fum Al Wad Coastal Plain, South Morocco
	Errich, Abderrazak; El Hajjaji, Souad; Fekhaoui, Mohamed; Hammouti, Belkheir; Azzaoui, Khalil; Lamhamdi, Abdellatif; Jodeh, Shehdeh
通讯作者	Errich, A
来源期刊	JOURNAL OF EARTH SCIENCE
ISSN	1674-487X
EISSN	1867-111X
出版年	2023
卷号	34 期号:6 页码:1940-1950
英文摘要	The coastal plain aquifer down gradient of Wad Essaquia Elhamra (WEE), is the main source of groundwater in the arid region of Laayoune Essaquia El Hamra located in south of Morocco. The over-exploitation of this aquifer over the last decade for water supply, agriculture and industry led to deterioration of groundwater quality, including seawater intrusion. The objective of this study is to investigate the spatial variation of groundwater quality, and to assess the influence of sea water intrusion on the groundwater quality using hydro-chemical tools. Several measurement campaigns of physico-chemical parameters of the groundwater were performed, which shows a very high mineralization ratios versus chloride, confirming the double influence of mixing mechanisms of fresh and saline waters and the water-rock interactions. Computed seawater fraction for sampled water shows that the average mixing rate of seawater intrusion reached 10.5%, confirming the marine intrusion in the aquifer. The highest values were registered in coastal wells. In the upstream around Laayoune and the spreading area, nitrate concentrations exceed 50 mg/L which is the threshold set by the World Health Organization, revealing a high level of contamination by domestic sewage. The combination of ionic ratios and seawater fraction is a useful tool to assess marine intrusion. This study reveals that the phenomenon of marine intrusion is not the only process that dominates hydrochemistry of ground water. The high groundwater mineralization is also due to rockwater interaction associated with reverse ion exchange with clay material and anthropogenic pollutants.
英文关键词	coastal aquifer saltwater intrusion nitrate pollution Fum El Wad aquifer groundwater water supply
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001127068100007
WOS关键词	GROUNDWATER QUALITY ; POLLUTION SOURCES ; AQUIFER ; SALINIZATION ; LEVEL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397251
推荐引用方式 GB/T 7714	Errich, Abderrazak,El Hajjaji, Souad,Fekhaoui, Mohamed,et al. Seawater Intrusion and Nitrate Contamination in the Fum Al Wad Coastal Plain, South Morocco[J],2023,34(6):1940-1950.
APA	Errich, Abderrazak.,El Hajjaji, Souad.,Fekhaoui, Mohamed.,Hammouti, Belkheir.,Azzaoui, Khalil.,...&Jodeh, Shehdeh.(2023).Seawater Intrusion and Nitrate Contamination in the Fum Al Wad Coastal Plain, South Morocco.JOURNAL OF EARTH SCIENCE,34(6),1940-1950.
MLA	Errich, Abderrazak,et al."Seawater Intrusion and Nitrate Contamination in the Fum Al Wad Coastal Plain, South Morocco".JOURNAL OF EARTH SCIENCE 34.6(2023):1940-1950.