Arid
DOI10.1016/j.jafrearsci.2012.10.001
Hydrogeochemical investigation of surface and groundwater composition in an irrigated land in Central Tunisia
Farid, Intissar1; Zouari, Kamel1; Abid, Kamel1; Ayachi, Mohamed2
通讯作者Farid, Intissar
来源期刊JOURNAL OF AFRICAN EARTH SCIENCES
ISSN1464-343X
EISSN1879-1956
出版年2013
卷号78页码:16-27
英文摘要

Major element concentrations, stable (delta O-18 and delta H-2) and radiogenic (H-3, C-14) isotopes determined in groundwater provided useful initial tracers for understanding the processes that control groundwater mineralization and identifying recharge sources in semi-arid Cherichira basin (central Tunisia).


Chemical data based on the chemistry of several major ions has revealed that the main sources of salinity in the groundwaters are related to the water-rock interaction such as the dissolution of evaporitic and carbonate minerals and some reactions with silicate and feldspar minerals.


The stable isotope compositions provide evidence that groundwaters are derived from recent recharge. The delta O-18 and delta H-2 relationships implied rapid infiltration during recharge to both the Oligocene and Quaternary aquifers, with only limited evaporation occurring in the Quaternary aquifer.


Chemical and isotopic signatures of the reservoir waters show large seasonal evolution and differ clearly from those of groundwaters.


Tritium data support the existence of recent recharge in Quaternary groundwaters. But, the low tritium values in Oligocene groundwaters are justified by the existence of clay lenses which limit the infiltration of meteoric water in the unsaturated zone and prolong the groundwater residence time.


Carbon-14 activities confirm that groundwaters are recharged from the surface runoff coming from precipitation. (c) 2012 Elsevier Ltd. All rights reserved.


英文关键词Cherichira basin Geochemistry Isotopes Recharge Evaporation process hill reservoirs
类型Article
语种英语
国家Tunisia
收录类别SCI-E
WOS记录号WOS:000313767600002
WOS关键词RECHARGE
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/2XILL650/177876
作者单位1.Natl Engn Sch Sfax, Lab Radioanal & Environm, Sfax 3038, Tunisia;
2.Minist Agr, Kairouan Water Resources Div, Tunis, Tunisia
推荐引用方式
GB/T 7714
Farid, Intissar,Zouari, Kamel,Abid, Kamel,et al. Hydrogeochemical investigation of surface and groundwater composition in an irrigated land in Central Tunisia[J],2013,78:16-27.
APA Farid, Intissar,Zouari, Kamel,Abid, Kamel,&Ayachi, Mohamed.(2013).Hydrogeochemical investigation of surface and groundwater composition in an irrigated land in Central Tunisia.JOURNAL OF AFRICAN EARTH SCIENCES,78,16-27.
MLA Farid, Intissar,et al."Hydrogeochemical investigation of surface and groundwater composition in an irrigated land in Central Tunisia".JOURNAL OF AFRICAN EARTH SCIENCES 78(2013):16-27.
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