干旱区生态环境知识资源中心(Arid): Using Environmental Isotopes and Krypton-81 to Characterize and Date Continental Intercalaire Paleogroundwater (Southern Tunisia)

Arid

DOI	10.1007/978-3-030-01599-2_14
	Using Environmental Isotopes and Krypton-81 to Characterize and Date Continental Intercalaire Paleogroundwater (Southern Tunisia)
	Zouari, Kamel; Matsumoto, Takuya; Trabelsi, Rim; Aggarwal, Pradeep
通讯作者	Zouari, K (corresponding author), Sfax Univ, Radioanal & Environm Lab, ENIS, Sfax, Tunisia.
会议名称	1st Springer Conference of the Arabian-Journal-of-Geosciences (CAJG)
会议日期	NOV 12-15, 2018
会议地点	Hammamet, TUNISIA
英文摘要	In a semi-arid to arid climate region, socio-economic development is mainly dependent on deep groundwater resources. This is the case of the Continental Intercalaire (CI) groundwater which is one of the most important aquifers in the North Western Sahara in Africa. This aquifer system, extending over more than a million of km(2), is mainly confined, poorly recharged but intensely abstracted in Southern Tunisia. Efficient management of this resource relies on accurate data such as recharge/discharge rate and groundwater dynamics. In this study, environmental isotopes (H-2, O-18, C-13, and C-14) were combined with long time lived radio-nuclide (Kr-81) to give greater constraint on the groundwater residence time in the CI. Stable isotope signature is depleted compared to the modern rainwater of Sfax station with very low deuterium excess suggesting a paleoclimatic effect. This finding is strongly supported by C-14 measurements where most of the analyzed samples are below the detection limit. The used carbon-14 correction models indicate residence times greater than 35 ka. However, the estimated ages range using Kr-81 contents are from 150 to 600 kyr, and are clearly much older than the C-14 ages, confirming that this method is not suitable for dating CI groundwater.
英文关键词	Krypton 81 (Kr-81) Carbon-14 Noble gas Paleogroundwater CI Tunisia
来源出版物	PATTERNS AND MECHANISMS OF CLIMATE, PALEOCLIMATE AND PALEOENVIRONMENTAL CHANGES FROM LOW-LATITUDE REGIONS
ISSN	2522-8714
EISSN	2522-8722
出版年	2019
页码	61-63
ISBN	978-3-030-01599-2; 978-3-030-01598-5
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
类型	Proceedings Paper
语种	英语
收录类别	CPCI-S
WOS记录号	WOS:000623519900014
WOS关键词	OLD GROUNDWATER ; CL-36
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences ; Oceanography
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Oceanography
资源类型	会议论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/370229
作者单位	[Zouari, Kamel; Trabelsi, Rim] Sfax Univ, Radioanal & Environm Lab, ENIS, Sfax, Tunisia; [Matsumoto, Takuya; Aggarwal, Pradeep] IAEA, Isotope Hydrol Sect, Vienna, Austria
推荐引用方式 GB/T 7714	Zouari, Kamel,Matsumoto, Takuya,Trabelsi, Rim,et al. Using Environmental Isotopes and Krypton-81 to Characterize and Date Continental Intercalaire Paleogroundwater (Southern Tunisia)[C]:SPRINGER INTERNATIONAL PUBLISHING AG,2019:61-63.