A5017210906- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Hydrology and Watershed Management Studies
- Groundwater and Watershed Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Soil and Unsaturated Flow
- Geophysical and Geoelectrical Methods
- Hydrocarbon exploration and reservoir analysis
- Plant Water Relations and Carbon Dynamics
- Hydrology and Sediment Transport Processes
- Atmospheric and Environmental Gas Dynamics
- Soil and Water Nutrient Dynamics
- Reservoir Engineering and Simulation Methods
- Geology and Paleoclimatology Research
- Geophysical Methods and Applications
- Mine drainage and remediation techniques
- Soil erosion and sediment transport
- Karst Systems and Hydrogeology
- Flood Risk Assessment and Management
- Radioactivity and Radon Measurements
- Underwater Acoustics Research
- Water Quality and Resources Studies
- Cinema and Media Studies
- Seismic Imaging and Inversion Techniques
- Hydrological Forecasting Using AI
National Centre for Groundwater Research and Training
2015-2024
Flinders University
2015-2024
University of Pretoria
2020
Universidade Estadual Paulista (Unesp)
2020
University of Utah
2020
Aix-Marseille Université
2018-2019
University of South Australia
2018
Commonwealth Scientific and Industrial Research Organisation
2006-2015
CSIRO Land and Water
2006-2015
Imperial Oil (Canada)
2005
Understanding how changes in the groundwater table affect surface water resources is of fundamental importance quantitative hydrology. If below a stream sufficiently deep, position effectively do not alter infiltration rate. This referred to as disconnected system. Previous authors noted that low‐conductivity layer body necessary but sufficient criterion for disconnection occur. We develop precise allows an assessment whether water–groundwater systems can disconnect or not. further...
Groundwater discharge to the Cockburn River, southeast Australia, has been estimated from comparison of natural 222 Rn activities in groundwater and river water, interpreted using a numerical flow model that simulates longitudinal radon as function inflow, hyporheic exchange, evaporation, gas exchange with atmosphere, radioactive decay. An injection SF 6 into estimate transfer velocity assisted constraining model. Previous estimates inflow have not considered possible input due between water...
Abstract Environmental tracer methods have been used to quantify groundwater discharge rivers for the past few decades. A number of different tracers in these studies, including individual ion concentrations, electrical conductivity, stable isotopes 2 H and 18 O, dissolved gases helium, chlorofluorocarbons radon. This paper discusses assumptions method, as well its resolution accuracy. The method will be most accurate when concentration is very distinct from that river. On basis typical...
Chemical base flow separation is a widely applied technique in which contributions of groundwater and surface runoff to streamflow are estimated based on the chemical composition stream water two end‐members. This method relies assumption that end‐member can be accurately defined remains constant. We simulate solute transport within aquifer during after single multiple river events, show (1) adjacent will have concentration intermediate between regional (2) discharge approach event but may...
Abstract Traditionally, groundwater and surface water flow models have been calibrated against two observation types: hydraulic heads discharge. It has repeatedly demonstrated, however, that these classical observations do not contain sufficient information to calibrate models. To reduce the predictive uncertainty of models, consideration other types constitutes a promising way forward. Despite ever‐increasing availability types, they are still unconventional when it comes model calibration....
Vast areas in the interior of Australia are exposed to regular but infrequent periods heavy rainfall, interspersed with long at high temperatures, little is known carbon budget these remote or how they respond extreme precipitation. In this study, we applied three methods partition net ecosystem photosynthesis into gross primary production (GPP) and respiration (R e ) during two years contrasting rainfall. The first year was wet (>250 mm above average rainfall), while precipitation fell...
Apparent ages obtained from the measured concentrations of environmental tracers have potential to inform recharge rates, flow and assist in calibration groundwater models. A number studies investigated sources error relationships between apparent ages, age assumed by models relate this quantity an aquifer property (e.g., recharge). These also provided a techniques for correcting known biases ages. In paper, we review some concepts bias. We then demonstrate bias through use on four numerical...
Abstract Intermittent rivers and ephemeral streams (IRES) account for over 50% of the world's river network are expected to increase with climate change increasing pressure on water resources. One significant challenge better manage IRES is unraveling threshold behavior streamflow generation, by understanding what controls triggers streamflow. This study aimed understand influence groundwater depth, soil hydraulic properties, rainfall generation in IRES, through analyzing spatiotemporal...
Abstract Radium isotopes and radon are routinely used as tracers to quantify groundwater porewater fluxes into coastal freshwater systems. However, uncertainties associated with the determination of tracer flux often poorly addressed neglect all potential errors conceptualization system (i.e., conceptual uncertainties). In this study, we assess magnitude some key related radium inputs supplied by a waterbody (La Palme Lagoon, France). This uncertainty assessment is through single model...
Abstract Groundwater models that simulate only saturated flow use groundwater recharge as an input parameter. In contrast, variably subsurface models, including integrated surface and hydrologic can jointly the movement of water in unsaturated zones. Instead recharge, they require climate data such precipitation potential evapotranspiration. Given latter represent hydrological processes operating throughout zone at table, one might expect be readily extracted from them. this paper, we...
Driven by the need for integrated management of groundwater (GW) and surface water (SW), quantification GW–SW interactions associated contaminant transport has become increasingly important. This is due to their substantial impact on quantity quality. In this review, we provide an overview methods developed over past several decades investigate interactions. These include geophysical, hydrometric, tracer techniques, as well various modeling approaches. Different reveal valuable information...
Chlorofluorocarbons and krypton 85 are trace gases whose atmospheric concentrations have been increasing over the past few decades. As they soluble in water, used as groundwater age indicators timescales ranging from a years to In this paper we show that time lag for transport of these through unsaturated zone is an important consideration when dating groundwaters recharged thick zones. The apparent largely dependent on gas solubility, diffusion coefficient, soil water content....
Detailed depth profiles of Chlorofluorocarbons CFC‐11(CFCl 3 (, CFC‐12 (CF 2 Cl ) and CFC‐113 (C F have been obtained from a well‐characterized field site in central Ontario. Aquifer materials comprise predominantly silty sands, with mean organic carbon content 0.03%. Nearly one‐dimensional flow exists at this site, the vertical migration well‐defined H peak has tracked through time. sampling allowed CFC tracer velocities to be estimated within 10%. Comparison enables estimation...