干旱区生态环境知识资源中心(Arid): HYDROCHEMICAL DIVERSITY OF A LARGE ALLUVIAL AQUIFER IN AN ARID ZONE (DRAA RIVER, S MOROCCO)

Arid

DOI	10.1515/eces-2019-0007
	HYDROCHEMICAL DIVERSITY OF A LARGE ALLUVIAL AQUIFER IN AN ARID ZONE (DRAA RIVER, S MOROCCO)
	Szczucinska, Anna 1; Dluzewski, Maciej 2; Kozlowski, Rafal 3; Niedzielski, Przemyslaw 4
通讯作者	Szczucinska, Anna
来源期刊	ECOLOGICAL CHEMISTRY AND ENGINEERING S-CHEMIA I INZYNIERIA EKOLOGICZNA S
ISSN	1898-6196
出版年	2019
卷号	26 期号:1 页码:81-100
英文摘要	In arid areas, with rivers functioning episodically, alluvial resources are the main source of water. Considering the intensified regulation of discharge in montane catchments, supplying the intermittent rivers, in the nearest future alluvial aquifers will gain key importance for the functioning of people in arid zones. The research aimed to investigate the diversified chemistry of alluvial waters typical of large intermittent river valleys in hot arid zones as well as to analyse processes determining the water chemistry and affecting its diversity. The detailed study, carried out in October 2015, covered the Draa river valley (1100 km total length) in the region of the Mhamid Oasis. The examined water was sampled from all wells found in the study area. Concentrations of the main cations: Ca2+, Mg2+, K+, Na+, NH4+, and Li+, anions: C-l-, SO42-, HCO3-, and NO3-, as well as trace elements: Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Sr, and Zn, were identified. Results were analysed with statistical, hydrochemical, and geochemical modelling methods. Alluvial waters of the eastern and western part of the oasis differed in concentrations of numerous components, what resulted from the regulation of irrigation. Specific electrical conductivity showed a 3.5-fold increase, from 3800 to 13800 mu S/cm, consistent with the direction of water flow in the oasis, from east to west. Even a greater rise was observed for ions: Cl- (6x), Na+ (5.5x), Mg2+ (5.0x), Ca2+, and SO42- (3.5x). Such a composition indicated multiionic hydrochemical type of waters dominated by Na+ and Cl-. Additionally, high Pearson correlation coefficients were recorded for Na+ and Cl- (0.98) as well as Mg2+ and Cl- (0.97). The saturation index suggested that the main water components originated from dissolving of minerals such as halite, anhydrite, sylvite, and gypsum. Groundwater chemistry in the Mhamid Oasis was determined mainly by geogenic processes, such as dissolving of evaporates, precipitation of carbonate minerals, and ion exchange.
英文关键词	hydrochemistry alluvial aquifer salinity arid zone intermittent river
类型	Article
语种	英语
国家	Poland
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000462923300007
WOS关键词	GEOCHEMICAL EVOLUTION ; RESIDENCE TIME ; GROUNDWATER ; BASIN ; OASIS ; WATER ; CONTAMINATION ; SALINIZATION ; RECHARGE ; TRACERS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215155
作者单位	1.Adam Mickiewicz Univ, Fac Geog & Geol Sci, Dept Hydrometry, Ul B Krygowskiego 10, PL-61680 Poznan, Poland; 2.Univ Warsaw, Fac Geog & Reg Studies, Dept Geomorphol, Ul Krakowskie Przedmiescie 30, PL-00927 Warsaw, Poland; 3.Jan Kochanowski Univ Humanities & Sci, Fac Math & Nat Sci, Dept Environm Protect & Modelling, Ul Swietokrzyska 15, PL-25406 Kielce, Poland; 4.Adam Mickiewicz Univ, Fac Chem, Dept Analyt Chem, Ul Umultowska 89b, PL-61614 Poznan, Poland
推荐引用方式 GB/T 7714	Szczucinska, Anna,Dluzewski, Maciej,Kozlowski, Rafal,et al. HYDROCHEMICAL DIVERSITY OF A LARGE ALLUVIAL AQUIFER IN AN ARID ZONE (DRAA RIVER, S MOROCCO)[J],2019,26(1):81-100.
APA	Szczucinska, Anna,Dluzewski, Maciej,Kozlowski, Rafal,&Niedzielski, Przemyslaw.(2019).HYDROCHEMICAL DIVERSITY OF A LARGE ALLUVIAL AQUIFER IN AN ARID ZONE (DRAA RIVER, S MOROCCO).ECOLOGICAL CHEMISTRY AND ENGINEERING S-CHEMIA I INZYNIERIA EKOLOGICZNA S,26(1),81-100.
MLA	Szczucinska, Anna,et al."HYDROCHEMICAL DIVERSITY OF A LARGE ALLUVIAL AQUIFER IN AN ARID ZONE (DRAA RIVER, S MOROCCO)".ECOLOGICAL CHEMISTRY AND ENGINEERING S-CHEMIA I INZYNIERIA EKOLOGICZNA S 26.1(2019):81-100.