干旱区生态环境知识资源中心(Arid): Usefulness of historical measurements of tritium content in groundwater for recharge assessment in semi-arid regions: application to several aquifers in central Tunisia

Arid

DOI	10.1007/s10040-019-01937-w
	Usefulness of historical measurements of tritium content in groundwater for recharge assessment in semi-arid regions: application to several aquifers in central Tunisia
	Jerbi, Hamza 1; Hamdi, Mohamed 1; Snoussi, Manel 1; Ben Abdelmalek, Maroua 1; Jnoub, Hadhemi 2; Tarhouni, Jamila 1
通讯作者	Jerbi, Hamza
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2019
卷号	27 期号:5 页码:1645-1660
英文摘要	Tritium is a well-known tracer, used to estimate the age of modern groundwater (<50 years) and consequently to capture information on the longer-term components of recharge in aquifers. However, its current low concentration in groundwater limits its usefulness for recharge assessment, which is more symptomatic of arid and semi-arid regions where the recharge is characterized by extreme spatial and temporal variability. Regions where groundwater tritium was studied at a time close to the peak of nuclear bomb testing (1963) would be worth studying again today to establish new information. This report describes the application of a radioactivity decay model to a long (up to 50 years) record of tritium in rainfall and the associated recharge to several aquifers in central Tunisia; these aquifers were sampled for tritium in 1967. The results show that the groundwater renewal rate has a large range: 0.06-2.2% of annual mean rainfall for Plio-Quaternary aquifers, 0.1-6.46% for Mio-Pliocene aquifers, and 0.1-1.5% for the upper Oligocene aquifers. A good agreement was found between the recharge estimated in this study and the recharge estimated in previous studies only for the upper Oligocene aquifers. This suggest that the methodology of recharge estimation, described in this report, is reliable only for aquifers of homogeneous lithology with a localized recharge area, but the method is less consistent for detrital aquifers, i.e. composed of lenticular sediments. The results also highlight the usefulness of historical (1950-1970) measurements of tritium in groundwater for the estimation of the groundwater recharge.
英文关键词	Tritium Groundwater recharge Historical data Arid regions Tunisia
类型	Article
语种	英语
国家	Tunisia
收录类别	SCI-E
WOS记录号	WOS:000475982700008
WOS关键词	MERGUELLIL CATCHMENT ; RESIDENCE TIME ; WATER-TABLE ; TRACERS ; BASIN ; MOUNTAIN ; SURFACE ; NIGER ; LAND ; C-14
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/2XILL650/216179
作者单位	1.LSTE, 43 Ave Charles Nicolle, Tunis 1082, Tunisia; 2.El Manar Tunis, Fac Sci Tunis, Tunis 2092, Tunisia
推荐引用方式 GB/T 7714	Jerbi, Hamza,Hamdi, Mohamed,Snoussi, Manel,et al. Usefulness of historical measurements of tritium content in groundwater for recharge assessment in semi-arid regions: application to several aquifers in central Tunisia[J],2019,27(5):1645-1660.
APA	Jerbi, Hamza,Hamdi, Mohamed,Snoussi, Manel,Ben Abdelmalek, Maroua,Jnoub, Hadhemi,&Tarhouni, Jamila.(2019).Usefulness of historical measurements of tritium content in groundwater for recharge assessment in semi-arid regions: application to several aquifers in central Tunisia.HYDROGEOLOGY JOURNAL,27(5),1645-1660.
MLA	Jerbi, Hamza,et al."Usefulness of historical measurements of tritium content in groundwater for recharge assessment in semi-arid regions: application to several aquifers in central Tunisia".HYDROGEOLOGY JOURNAL 27.5(2019):1645-1660.