干旱区生态环境知识资源中心(Arid): Subsurface Hydrodynamics of the Southeastern Taoudéni Basin (West Africa) through Hydrogeochemistry and Isotopy

Arid

DOI	10.3390/w16131922
	Subsurface Hydrodynamics of the Southeastern Taoudéni Basin (West Africa) through Hydrogeochemistry and Isotopy
	Kutangila, Succes Malundama; Kafando, Moussa Bruno; Keita, Amadou; Mounirou, Lawani Adjadi; Yonaba, Roland; Ouedraogo, Mahamadi; Koita, Mahamadou
通讯作者	Kutangila, SM
来源期刊	WATER
EISSN	2073-4441
出版年	2024
卷号	16 期号:13
英文摘要	The Taoud & eacute;ni Basin, spanning 20% of Burkina Faso, holds vital aquifers for the Sahel's water security and development. However, limited understanding of these aquifers' hydrodynamics, including the flow patterns, mineralization processes, and renewal rates, hinders sustainable management practices in this arid region. Therefore, this study aims to investigate the aquifer hydrodynamics, mineralization processes and groundwater renewal in the transboundary Taoud & eacute;ni Basin. Through a combination of hydrogeochemical and isotopic analyses, alongside existing data, this study examines 347 physicochemical samples, 149 stable isotope samples, and 71 tritium samples collected from 2013 to 2022. The findings reveal mineralization and stable isotopes (delta 18O, delta 2H) spatially aligned with the groundwater flow direction, validating this and indicating potentially multiple independent aquifers. The predominant mineralization mechanisms involve silicate hydrolysis and carbonate dissolution, supplemented by minor processes like evaporitic dissolution and cation exchange. The anthropogenic influence suggests potential groundwater recharge with potential pollution in the SAC1, SAC2, GFR, GGQ, and GKS geological formations. The stable isotopes (delta 18O, delta 2H) indicate recharge occurred over 4.5 kyr B.P., while tritium (3H) analysis confirms the presence of old, mixed waters, indicating slow renewal. Overall, this study highlights the minimal recent recharge and limited renewal rates, questions tritium's efficacy for old water detection, and emphasizes the need for sustainable management.
英文关键词	Burkina Faso groundwater sustainable management hydrogeochemistry isotope hydrology transboundary basin underground hydrodynamics mineralization mechanism multiple independent aquifers
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001269154600001
WOS关键词	GROUNDWATER-FLOW ; AQUIFER ; GEOCHEMISTRY ; QUALITY ; TRITIUM ; TIME
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405883
推荐引用方式 GB/T 7714	Kutangila, Succes Malundama,Kafando, Moussa Bruno,Keita, Amadou,et al. Subsurface Hydrodynamics of the Southeastern Taoudéni Basin (West Africa) through Hydrogeochemistry and Isotopy[J],2024,16(13).
APA	Kutangila, Succes Malundama.,Kafando, Moussa Bruno.,Keita, Amadou.,Mounirou, Lawani Adjadi.,Yonaba, Roland.,...&Koita, Mahamadou.(2024).Subsurface Hydrodynamics of the Southeastern Taoudéni Basin (West Africa) through Hydrogeochemistry and Isotopy.WATER,16(13).
MLA	Kutangila, Succes Malundama,et al."Subsurface Hydrodynamics of the Southeastern Taoudéni Basin (West Africa) through Hydrogeochemistry and Isotopy".WATER 16.13(2024).