干旱区生态环境知识资源中心(Arid): An Overview of Aquifer Physiognomies and the delta O-18 and delta H-2 Distribution in the South African Groundwaters

Arid

DOI	10.3390/hydrology8020068
	An Overview of Aquifer Physiognomies and the delta O-18 and delta H-2 Distribution in the South African Groundwaters
	Abiye, Tamiru A.; Demlie, Molla B.; Mengistu, Haile
通讯作者	Abiye, TA (corresponding author), Univ Witwatersrand, Sch Geosci, Private Bag X3,Johannesburg POB, ZA-2050 Johannesburg, South Africa.
来源期刊	HYDROLOGY
EISSN	2306-5338
出版年	2021
卷号	8 期号:2
英文摘要	A comprehensive assessment of the stable isotope distribution in the groundwater systems of South Africa was conducted in relation to the diversity in the aquifer lithology and corresponding hydraulic characteristics. The stable isotopes of oxygen (O-18) and hydrogen (H-2) in groundwater show distinct spatial variation owing to the recharge source and possibly mixing effect in the aquifers with the existing water, where aquifers are characterized by diverse hydraulic conductivity and transmissivity values. When the shallow aquifer that receives direct recharge from rainfall shows a similar isotopic signature, it implies less mixing effect, while in the case of deep groundwater interaction between recharging water and the resident water intensifies, which could change the isotope signature. As aquifer depth increases the effect of mixing tends to be minimal. In most cases, the isotopic composition of recharging water shows depletion in the interior areas and western arid zones which is attributed to the depleted isotopic composition of the moisture source. The variations in the stable isotope composition of groundwater in the region are primarily controlled by the isotope composition of the rainfall, which shows variable isotope composition as it was observed from the local meteoric water lines, in addition to the evaporation, recharge and mixing effects.
英文关键词	crystalline aquifers groundwater mixing stable isotopes sedimentary and volcanic aquifers South Africa
类型	Review
语种	英语
开放获取类型	gold
收录类别	ESCI
WOS记录号	WOS:000665147200001
WOS关键词	CROCODILE RIVER-BASIN ; JOHANNESBURG ; ISOTOPES ; PROVINCE ; RECHARGE ; WATER ; AREA
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352842
作者单位	[Abiye, Tamiru A.] Univ Witwatersrand, Sch Geosci, Private Bag X3,Johannesburg POB, ZA-2050 Johannesburg, South Africa; [Demlie, Molla B.] Univ KwaZulu Natal, Sch Agr Earth & Environm Sci, Private Bag X54001, ZA-4000 Durban, South Africa; [Mengistu, Haile] Wayne Cty Community Coll Dist, 801 W Ft St, Detroit, MI 48226 USA
推荐引用方式 GB/T 7714	Abiye, Tamiru A.,Demlie, Molla B.,Mengistu, Haile. An Overview of Aquifer Physiognomies and the delta O-18 and delta H-2 Distribution in the South African Groundwaters[J],2021,8(2).
APA	Abiye, Tamiru A.,Demlie, Molla B.,&Mengistu, Haile.(2021).An Overview of Aquifer Physiognomies and the delta O-18 and delta H-2 Distribution in the South African Groundwaters.HYDROLOGY,8(2).
MLA	Abiye, Tamiru A.,et al."An Overview of Aquifer Physiognomies and the delta O-18 and delta H-2 Distribution in the South African Groundwaters".HYDROLOGY 8.2(2021).