干旱区生态环境知识资源中心(Arid): Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination

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DOI	10.1002/wer.10995
	Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination
	Qurtobi, Mohamed; Hssaisoune, Mohammed; Kumar, Umayadoss Saravana; Bouchaou, Lhoussaine
通讯作者	Hssaisoune, M
来源期刊	WATER ENVIRONMENT RESEARCH
ISSN	1061-4303
EISSN	1554-7531
出版年	2024
卷号	96 期号:2
英文摘要	In many coastal areas in Morocco, groundwater (GW) constitutes an important water supply for human activities. Intensive pumping makes GW highly susceptible to contamination, affecting its quality and then human health. This work aims to assess and improve the application of environmental isotopes in exploring the connections between GW recharge and discharge, as well as to identify the direction, age, and speed of GW flow, in the coastal aquifer system of the Akermoud plain. A total of 23 boreholes and wells were sampled during two sampling campaigns in 2017 and 2018, including 11 samples from the shallow aquifer and 12 samples from the deep aquifer. A set of chemical and isotopic tracers (delta 18O, delta 2H, 3H, delta 13C, 14C, and 3He) is used to track water and solute from input to output of the investigated system. Stable isotopes distinguish recharge at different altitudes for the shallow and deep aquifers. Both aquifers reveal consistently low values of 3H (between 0.3 and 0.9 tritium units) and from 28% to 64% of modern carbon for six boreholes. According to 14C correction models, GW has ages ranging from 3300 to 11,000 years before present. GW flows from SSE to NNW and discharge along the Atlantic coast of Akermoud plain with a velocity ranging from 0.41 to 1.8 m/year.Practitioner Points The use of environmental tracers helps determine the origin of salinity and identify the recharge area. Investigating the MRT of groundwater resources is essential, especially in arid regions. Evaluating the efficiency of isotopic tracing is crucial in assessing the risk of groundwater contamination. The findings provide insights for stakeholders to promote more sustainable groundwater management in coastal areas. Seawater intrusion, dissolution of evaporates, and domestic wastewater are the main sources of salinity. The recharge is dominated by local precipitation for upper aquifer and from higher elevation for lower aquifer. The GW moves from southeast to northwest in both aquifers, with different speeds. image
英文关键词	coastal aquifer groundwater flow isotopes mean residence time Morocco
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001166429700001
WOS关键词	RESIDENCE TIME ; NOBLE-GASES ; LIMESTONE AQUIFER ; CL/BR RATIOS ; RIVER-BASIN ; WATER ; SALINIZATION ; ISOTOPES ; RECHARGE ; SOUTHWEST
WOS类目	Engineering, Environmental ; Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Engineering ; Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405911
推荐引用方式 GB/T 7714	Qurtobi, Mohamed,Hssaisoune, Mohammed,Kumar, Umayadoss Saravana,et al. Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination[J],2024,96(2).
APA	Qurtobi, Mohamed,Hssaisoune, Mohammed,Kumar, Umayadoss Saravana,&Bouchaou, Lhoussaine.(2024).Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination.WATER ENVIRONMENT RESEARCH,96(2).
MLA	Qurtobi, Mohamed,et al."Multienvironmental tracers in coastal aquifer (Morocco): A window into groundwater mixing and risk to contamination".WATER ENVIRONMENT RESEARCH 96.2(2024).