干旱区生态环境知识资源中心(Arid): The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa

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DOI	10.1007/s10040-021-02391-3
	The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa
	Sorensen, James P. R.; Davies, Jeff; Ebrahim, Girma Y.; Lindle, John; Marchant, Ben P.; Ascott, Matthew J.; Bloomfield, John P.; Cuthbert, Mark O.; Holland, Martin; Jensen, K. H.; Shamsudduha, M.; Villholth, Karen G.; MacDonald, Alan M.; Taylor, Richard G.
通讯作者	Sorensen, JPR (corresponding author), British Geol Survey, Maclean Bldg, Wallingford OX10 8BB, Oxon, England. ; Sorensen, JPR (corresponding author), UCL, Dept Geog, London WC1E 6BT, England.
来源期刊	HYDROGEOLOGY JOURNAL
ISSN	1431-2174
EISSN	1435-0157
出版年	2021-09
英文摘要	There is a scarcity of long-term groundwater hydrographs from sub-Saharan Africa to investigate groundwater sustainability, processes and controls. This paper presents an analysis of 21 hydrographs from semi-arid South Africa. Hydrographs from 1980 to 2000 were converted to standardised groundwater level indices and rationalised into four types (C1-C4) using hierarchical cluster analysis. Mean hydrographs for each type were cross-correlated with standardised precipitation and streamflow indices. Relationships with the El Nino-Southern Oscillation (ENSO) were also investigated. The four hydrograph types show a transition of autocorrelation over increasing timescales and increasingly subdued responses to rainfall. Type C1 strongly relates to rainfall, responding in most years, whereas C4 notably responds to only a single extreme event in 2000 and has limited relationship with rainfall. Types C2, C3 and C4 have stronger statistical relationships with standardised streamflow than standardised rainfall. C3 and C4 changes are significantly (p < 0.05) correlated to the mean wet season ENSO anomaly, indicating a tendency for substantial or minimal recharge to occur during extreme negative and positive ENSO years, respectively. The range of different hydrograph types, sometimes within only a few kilometres of each other, appears to be a result of abstraction interference and cannot be confidently attributed to variations in climate or hydrogeological setting. It is possible that high groundwater abstraction near C3/C4 sites masks frequent small-scale recharge events observed at C1/C2 sites, resulting in extreme events associated with negative ENSO years being more visible in the time series.
英文关键词	Groundwater recharge Teleconnections Abstraction Semi-arid South Africa
类型	Article ; Early Access
语种	英语
开放获取类型	Green Accepted, hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000698111300001
WOS关键词	MANAGEMENT STRATEGIES ; LIMPOPO PROVINCE ; VARIABILITY ; AQUIFER ; RIVER ; RAINFALL ; DENDRON ; IMPACT ; REGION ; BASIN
WOS类目	Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Geology ; Water Resources
来源机构	University of London
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367576
作者单位	[Sorensen, James P. R.; Davies, Jeff; Marchant, Ben P.; Ascott, Matthew J.; Bloomfield, John P.] British Geol Survey, Maclean Bldg, Wallingford OX10 8BB, Oxon, England; [Sorensen, James P. R.; Taylor, Richard G.] UCL, Dept Geog, London WC1E 6BT, England; [Ebrahim, Girma Y.] Int Water Management Inst, POB 5689, Addis Ababa, Ethiopia; [Lindle, John; Jensen, K. H.] Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark; [Cuthbert, Mark O.] Cardiff Univ, Sch Earth & Environm Sci, Cardiff, Wales; [Cuthbert, Mark O.] Univ New South Wales UNSW, Sch Civil & Environm Engn, Sydney, NSW, Australia; [Holland, Martin] Delta H Water Syst Modelling PTY Ltd, Pretoria, South Africa; [Shamsudduha, M.] Univ Sussex, Dept Geog, Brighton, E Sussex, England; [Villholth, Karen G.] Int Water Management Inst, Cresswell Rd, Pretoria, South Africa; [MacDonald, Alan M.] British Geol Survey, Lyell Ctr, Edinburgh EH14 4AP, Midlothian, Scotland
推荐引用方式 GB/T 7714	Sorensen, James P. R.,Davies, Jeff,Ebrahim, Girma Y.,et al. The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa[J]. University of London,2021.
APA	Sorensen, James P. R..,Davies, Jeff.,Ebrahim, Girma Y..,Lindle, John.,Marchant, Ben P..,...&Taylor, Richard G..(2021).The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa.HYDROGEOLOGY JOURNAL.
MLA	Sorensen, James P. R.,et al."The influence of groundwater abstraction on interpreting climate controls and extreme recharge events from well hydrographs in semi-arid South Africa".HYDROGEOLOGY JOURNAL (2021).