Doctoral Degrees (Institute for Groundwater Studies (IGS))
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Analysis of a post-closure safety assessment methodology for radioactive waste disposal systems in South Africa
(University of the Free State, 2000-02)English: Radioactive waste in South Africa is generated through the nuclear fuel cycle and the application of radioactive materials in industry, science and medicine. The radioactive waste is presently disposed at Vaalputs ... -
The development and evaluation of hydrogeochemical prediction techniques for South African coalmines
(University of the Free State, 2003-05)Abstract not available -
Development of artificial neural network of mine dewatering
(University of the Free State, 2017)Open pit mines often experience problems related to groundwater inflows. To perform mineral extraction in safe conditions with high productivity, it is essential to have dry working conditions. For this reason, the groundwater ... -
A critical review of recharge estimation methods used in Southern Africa
(University of the Free State, 2003-12)English: A new stable isotope-based technique, the Modified Amount Effect (MAE) Method, was developed during this investigation. This technique provides insight into episodic recharge processes by estimating the proportion ... -
Experimental determination of rock hydrological properties using elastic parameters
(University of the Free State, 2007-11)English: As groundwater becomes increasingly vital as a viable source of fresh water in arid or remote areas, where surface water supplies are insufficient to sustain life, agriculture and industry, it has become important ... -
Risk based decision tool for managing and protecting groundwater resources
(University of the Free State, 2001-11)English: The limited number of water resources in South Africa has resulted in increased emphasis being placed on groundwater. Groundwater supply of acceptable quality and quantity is a very important factor in the ... -
Surface water - groundwater interactions: development of methodologies suitable for South African conditions
(University of the Free State, 2013)English: Winter (1999) succinctly, made a profound statement to the effect that understanding the basic principles of the interaction between surface water and groundwater is needed for effective management of water ... -
Aquifer test interpretation with special emphasis on the drawdown evaluation for wells within fracture networks smaller than the representative elementary volume (rev)
(University of the Free State, 2002-05)Fractured aquifers are characterized by the fact that most of the water flows along fractures, faults, open bedding planes, or other geological features. These features are embedded in a matrix that has either porous ... -
Quantification and modelling of heterogeneities in aquifers
(University of the Free State, 2017-01)English: The future of modelling of heterogeneity in aquifers is definitively in the designing of new in situ testing (hydraulic and mass transport) procedures with new corresponding mathematical models. New trends in ... -
Innovative methods for the characterisation of fractured rock aquifers
(University of the Free State, 2008-12)Bulk flow is regional flow. The word region is used in two ways viz; i) A region may be a hydrogeologically and geographically distinct area. Ex: the Karoo basin. ii) A region maybe discontinuous but widespread encompassing ... -
Aquifer parameter estimation in fractured-rock aquifers using a combination of hydraulic and tracer tests
(University of the Free State, 2002-08)English: Water resources in South Africa are already being stressed and the country is slowly becoming a water-scarce country. This presents a challenge to all water resource managers to ensure that the basic water needs ... -
Tracing water and nitrate movement through soils with bromide
(University of the Free State, 2003-01)English: The pollution of surface and subsurface water is a serious problem worldwide. To clean up a once polluted groundwater source is very difficult and costly, if not impossible. Almost all the sources responsible ... -
Environmental geochemistry of the Waterberg coalfields
(University of the Free State, 2015-07)English: The Waterberg Coalfields represent the last area in South Africa which contain large quantities of coal resources. The most important issue with economic growth and development is to take measures to minimise the ... -
Evaluation of the vulnerability of selected aquifer systems in the Eastern Dahomey basin, South Western Nigeria
(University of the Free State, 2015-01)This study aimed to evaluate the vulnerability of the shallow aquifer systems of the Dahomey Basin and formulate a simple vulnerability method with which data limited areas (which include the shallow unconfined aquifers ... -
Biobarrier formation for hydraulic control in groundwater remediation in South Africa
(University of the Free State, 2006-11)Abstract not available -
Development of a numerical model for unsaturated/saturated hydraulics in ash/brine systems
(University of the Free State, 2010-01)English: Vast quantities of coal combustion residues (ash) and effluents are produced simultaneously in the coal processing facilities of South African parastatals, Eskom and Sasol. The handling and disposal of saline ... -
Establishing geobotanical-geophysical correlations in the north-eastern parts of South Africa for improving efficient borehole siting in difficult terrain
(University of the Free State, 2007-11)English: The determination whether certain botanic species can be associated and linked to the existence of groundwater resources by considering the relationship of these species with certain lithologies has been studied ... -
Estimation of episodic groundwater recharge in semi-arid fractured hard rock aquifers
(University of the Free State, 2010-08)The semi-arid regions of southern Africa cover large portions of settled land where domestic and agricultural activities depends on isolated groundwater systems replenished by irregularly occurring rainfall events. Southern ... -
DNAPLs in South African fractured aquifers : occurrence, fate and management
(University of the Free State, 2008-12-12)English: The potential for the widespread contamination of groundwater by Dense Non-aqueous Liquids (DNAPLs) in South Africa is substantial, because of the extensive production, transport, utilisation, and disposal of large ... -
Surface water - groundwater interactions: development of methodologies suitable for South African conditions
(University of the Free State, 2013)Winter (1999) succinctly, made a profound statement to the effect that understanding the basic principles of the interaction between surface water and groundwater is needed for effective management of water resources. ...
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