A5013000160- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Hydrology and Watershed Management Studies
- Geology and Paleoclimatology Research
- Groundwater and Watershed Analysis
- Hydrocarbon exploration and reservoir analysis
- Paleontology and Stratigraphy of Fossils
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Geochemistry and Geologic Mapping
- Isotope Analysis in Ecology
- Coal Properties and Utilization
- Soil and Water Nutrient Dynamics
- Geochemistry and Elemental Analysis
- Geological and Geophysical Studies Worldwide
- Karst Systems and Hydrogeology
- Geophysical Methods and Applications
- Marine and environmental studies
- earthquake and tectonic studies
- Geological Formations and Processes Exploration
- Radioactive contamination and transfer
- Radioactive element chemistry and processing
- Geological formations and processes
- Mine drainage and remediation techniques
- Radioactivity and Radon Measurements
Australian Nuclear Science and Technology Organisation
2015-2024
Environmental Earth Sciences
2013-2024
UNSW Sydney
2014-2024
Australian Government
2023
University of Wollongong
2003-2011
Consejo Superior de Investigaciones Científicas
2001
Geociencias Barcelona
2000-2001
The application of N fertilisers to enhance crop yield is common throughout the world. Many crops have historically been, or are still, fertilised with in excess requirements. A portion transported into underlying aquifers form NO3-, which potentially discharged surface waters. Denitrification can reduce severity NO3- export from groundwater. We sought understand occurrence and hydrogeochemical controls on denitrification NO3--rich beneath Emerald Irrigation Area (EIA), Queensland,...
Fluid inclusions from ten Cenozoic (Eocene-Miocene) marine halites are used to quantify the major-ion composition (Mg^2+^, Ca^2+^, K^+^, Na^+^, SO~4~^2−^, and Cl^−^) of seawater over past 36 My. Criteria determine a origin include: (1) stratigraphic, sedimentologic, paleontologic observations; (2) Br^−^ in halite; (3) δ^34^S sulfate minerals; (4) ^87^Sr/^86^Sr carbonates sulfates; (5) fluid inclusion brine compositions evaporation paths, which must overlap geographically separated basins...
Abstract. A major limitation to the assessment of catchment transit time (TT) stems from use stable isotopes or chloride as hydrological tracers, because these tracers are blind older contributions. Yet, accurately capturing TT old water fraction is essential, its temporal variations under non-stationary dynamics. In this study we used lumped convolution models examine series tritium, and in rainfall, streamwater groundwater a located subtropical Australia. Our objectives were determine...
Abstract. Reconstructions of Quaternary climate are often based on the isotopic content paleo-precipitation preserved in proxy records. While many isotope records available, few studies have synthesized these dispersed to explore spatial patterns late-glacial precipitation δ18O. Here we present a synthesis 86 globally distributed groundwater (n = 59), cave calcite 15) and ice core 12) spanning (defined as ~ 50 000 20 years ago) late-Holocene (within past 5000 years). We show that δ18O...
Abstract. For the past two decades, measurement of nitrous oxide (N2O) isotopocules – isotopically substituted molecules 14N15N16O, 15N14N16O and 14N14N18O main isotopic species 14N14N16O has been a promising technique for understanding N2O production consumption pathways. The coupling non-cryogenic tuneable light sources with different detection schemes, such as direct absorption quantum cascade laser spectroscopy (QCLAS), cavity ring-down (CRDS) off-axis integrated output (OA-ICOS),...
Understanding the behaviour and variability of environmental tracers is important for their use in estimating groundwater discharge to rivers. This study utilizes a multi-tracer approach quantify into 27 km upland reach Gellibrand River southwest Victoria, Australia. Ten sampling campaigns were conducted between March 2011 June 2012, distribution 222Rn activities, Cl 3H concentrations imply river receives substantial inflows. Mass balances based on 222Rn, yield estimates inflows that agree...
Abstract Coal seam gas (CSG) production can have an impact on groundwater quality and quantity in adjacent or overlying aquifers. To assess this we need to determine the background chemistry map geological pathways of hydraulic connectivity between In south-east Queensland (Qld), Australia, a globally important CSG exploration province, mapped Walloon Measures (WCM, target formation for production) Condamine River Alluvial Aquifer (CRAA), using methane (CH 4 ) concentration isotopic...
Abstract. Knowledge of the age organic carbon (C) that is leached from soils to streams key understanding how C mobilised within ecosystems. The tropics are characterised by significant fluxes through streams, yet time scales sequestration and export remain uncertain in these regions. Here we examined concentration, composition dissolved (DOC) 18 small mountainous catchments Australian humid tropics, including six rainforest 12 agricultural catchments, sampled during both dry wet seasons. We...