dc.contributor.author |
Sun, X
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|
dc.contributor.author |
Xu, Y
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|
dc.contributor.author |
Jovanovic, Nebojsa
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|
dc.contributor.author |
Kapangaziwiri, Evison
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|
dc.contributor.author |
Brendonck, L
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dc.contributor.author |
Bugan, Richard DH
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|
dc.date.accessioned |
2014-01-24T10:09:51Z |
|
dc.date.available |
2014-01-24T10:09:51Z |
|
dc.date.issued |
2013-04 |
|
dc.identifier.citation |
Sun, X., Xu, Y., Jovanovic, N., Kapangaziwiri, E., Brendonck, L. and Bugan, R.D.H. 2013. Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa. Warer SA, vol. 39(2), pp 221-230 |
en_US |
dc.identifier.issn |
0378-4738 |
|
dc.identifier.uri |
http://www.wrc.org.za/Pages/DisplayItem.aspx?ItemID=10203&FromURL=%2FPages%2FAllKH.aspx%3Fdt%3D%26ms%3D%26d%3DDocument+Type%26e%3DWater+SA+Manuscript%26start%3D1
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dc.identifier.uri |
http://hdl.handle.net/10204/7170
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|
dc.description |
Copyright: 2013 Water Research Commission. Published in Water SA, vol. 39(2), pp 221-230 |
en_US |
dc.description.abstract |
Recharge estimation in arid and semi-arid areas is very challenging. The chloride mass balance method applied in western South Africa fails to provide reliable recharge estimates near coastal areas. A relationship between rainfall events and water level fluctuations (WLF) on a monthly basis was proposed in the rainfall infiltration breakthrough (RIB) model for the purpose of groundwater recharge estimation. In this paper, the physical meaning of parameters in the CRD and previous RIB models is clarified, and the RIB model is reviewed with the algorithm improved to accommodate various time scales, namely, daily, monthly and annual scales. Recharge estimates on a daily and monthly basis using the revised RIB approach in 2 study areas, one in a sandy alluvial aquifer (Riverlands) and the other in the Table Mountain Group (TMG) shallow unconfined aquifer (Oudebosch), are presented, followed by sensitivity analysis. Correlation analysis between rainfall and observed WLF data at daily scale and monthly scale, together with recharge estimates obtained from other methods, demonstrates that the RIB results using monthly data are more realistic than those for daily data, when using long time series. Scenarios using the data from Oudebosch with different rainfall and groundwater abstraction inputs are simulated to explore individual effects on water levels as well as recharge rate estimated on a daily basis. The sensitivity analysis showed that the recharge rate by the RIB model is specifically sensitive to the parameter of specific yield; therefore, the accurate representative specific yield of the aquifer needs to be selected with caution. The RIB model demonstrated in these two cases can be used to estimate groundwater recharge with sufficiently long time series of groundwater level and rainfall available in similar regions. In summary, the RIB model is best suited for shallow unconfined aquifers with relatively lower transmissivity; the utility of the RIB model for application in different climatic areas under different hydrogeological conditions needs to be further explored. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Water Research Commission |
en_US |
dc.relation.ispartofseries |
Workflow;12039 |
|
dc.subject |
Rainfall infiltration breakthrough |
en_US |
dc.subject |
RIB |
en_US |
dc.subject |
RIB model |
en_US |
dc.subject |
Groundwater recharge estimation |
en_US |
dc.subject |
Water level fluctuations |
en_US |
dc.subject |
WLF |
en_US |
dc.subject |
Shallow unconfined aquifer |
en_US |
dc.subject |
Groundwater-level fluctuation |
en_US |
dc.subject |
Table Mountain Group aquifer |
en_US |
dc.title |
Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Sun, X., Xu, Y., Jovanovic, N., Kapangaziwiri, E., Brendonck, L., & Bugan, R. D. (2013). Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa. http://hdl.handle.net/10204/7170 |
en_ZA |
dc.identifier.chicagocitation |
Sun, X, Y Xu, Nebojsa Jovanovic, Evison Kapangaziwiri, L Brendonck, and Richard DH Bugan "Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa." (2013) http://hdl.handle.net/10204/7170 |
en_ZA |
dc.identifier.vancouvercitation |
Sun X, Xu Y, Jovanovic N, Kapangaziwiri E, Brendonck L, Bugan RD. Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa. 2013; http://hdl.handle.net/10204/7170. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Sun, X
AU - Xu, Y
AU - Jovanovic, Nebojsa
AU - Kapangaziwiri, Evison
AU - Brendonck, L
AU - Bugan, Richard DH
AB - Recharge estimation in arid and semi-arid areas is very challenging. The chloride mass balance method applied in western South Africa fails to provide reliable recharge estimates near coastal areas. A relationship between rainfall events and water level fluctuations (WLF) on a monthly basis was proposed in the rainfall infiltration breakthrough (RIB) model for the purpose of groundwater recharge estimation. In this paper, the physical meaning of parameters in the CRD and previous RIB models is clarified, and the RIB model is reviewed with the algorithm improved to accommodate various time scales, namely, daily, monthly and annual scales. Recharge estimates on a daily and monthly basis using the revised RIB approach in 2 study areas, one in a sandy alluvial aquifer (Riverlands) and the other in the Table Mountain Group (TMG) shallow unconfined aquifer (Oudebosch), are presented, followed by sensitivity analysis. Correlation analysis between rainfall and observed WLF data at daily scale and monthly scale, together with recharge estimates obtained from other methods, demonstrates that the RIB results using monthly data are more realistic than those for daily data, when using long time series. Scenarios using the data from Oudebosch with different rainfall and groundwater abstraction inputs are simulated to explore individual effects on water levels as well as recharge rate estimated on a daily basis. The sensitivity analysis showed that the recharge rate by the RIB model is specifically sensitive to the parameter of specific yield; therefore, the accurate representative specific yield of the aquifer needs to be selected with caution. The RIB model demonstrated in these two cases can be used to estimate groundwater recharge with sufficiently long time series of groundwater level and rainfall available in similar regions. In summary, the RIB model is best suited for shallow unconfined aquifers with relatively lower transmissivity; the utility of the RIB model for application in different climatic areas under different hydrogeological conditions needs to be further explored.
DA - 2013-04
DB - ResearchSpace
DP - CSIR
KW - Rainfall infiltration breakthrough
KW - RIB
KW - RIB model
KW - Groundwater recharge estimation
KW - Water level fluctuations
KW - WLF
KW - Shallow unconfined aquifer
KW - Groundwater-level fluctuation
KW - Table Mountain Group aquifer
LK - https://researchspace.csir.co.za
PY - 2013
SM - 0378-4738
T1 - Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa
TI - Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa
UR - http://hdl.handle.net/10204/7170
ER -
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en_ZA |