干旱区生态环境知识资源中心(Arid): Aflaj-aquifer interconnectivity in northern Oman, revealed from geochemical and isotopic composition of aflaj waters

Arid

DOI	10.1007/s10040-023-02756-w
	Aflaj-aquifer interconnectivity in northern Oman, revealed from geochemical and isotopic composition of aflaj waters
	Semhi, Khadija; Abdalla, Osman; Al Abri, Rashid
通讯作者	Abdalla, O
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2024
卷号	32 期号:1 页码:203-217
英文摘要	The aflaj system in Oman is an ancient irrigation network that delivers water supply to the local population, using gravity transport from the aflaj's water sources. Ensuring the sustainability of these water sources is crucial, and a thorough understanding of recharge and hydrodynamic relationships among different aflaj is necessary for future planning and development. Major chemical and isotope compositions, including 2H, 18O, and Sr, are used in this study to identify the sources of water in different aflaj systems and explore connectivity among the various hydrologic systems. The investigation covers a 38,325-km2 area in northern Oman, focusing on springs (ainy aflaj), groundwater collection channels (daoodi aflaj), and surface-water collectors (ghaili aflaj). The primary aquifers in the region include Hajar Super Group (HSG), Ophiolite, Tertiary, Alluvium, and Hawasina. The chemistry of aflaj waters is mainly controlled by evaporation and weathering processes. The 2H vs 18O data display a slope of 5.04, indicating the influence of evaporation. Analyzing the 2H vs 18O data reveals two groups of springs: one group is recharged from the HSG and Hawasina aquifers, while the other is recharged from HSG and Ophiolite. Daoodi aflaj, on the other hand, are primarily recharged from HSG and Ophiolite, with some contribution from Hawasina. The Mg/Ca ratio exhibits a connection between waters from Hawasina and both HSG and Ophiolite, indicating their hydraulic connectivity. This study suggests that all aflaj receive water contributions from at least two aquifer units, with HSG being the primary source of recharge before connecting with other aquifers.
英文关键词	Isotopes Evaporation Groundwater recharge Ophiolite Arid regions Oman
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:001132781600002
WOS关键词	GROUNDWATER ; RAINFALL ; RECHARGE
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/404091
推荐引用方式 GB/T 7714	Semhi, Khadija,Abdalla, Osman,Al Abri, Rashid. Aflaj-aquifer interconnectivity in northern Oman, revealed from geochemical and isotopic composition of aflaj waters[J],2024,32(1):203-217.
APA	Semhi, Khadija,Abdalla, Osman,&Al Abri, Rashid.(2024).Aflaj-aquifer interconnectivity in northern Oman, revealed from geochemical and isotopic composition of aflaj waters.HYDROGEOLOGY JOURNAL,32(1),203-217.
MLA	Semhi, Khadija,et al."Aflaj-aquifer interconnectivity in northern Oman, revealed from geochemical and isotopic composition of aflaj waters".HYDROGEOLOGY JOURNAL 32.1(2024):203-217.