A5024594319- Groundwater and Isotope Geochemistry
- Groundwater flow and contamination studies
- Groundwater and Watershed Analysis
- Hydrology and Watershed Management Studies
- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Mine drainage and remediation techniques
- Soil and Water Nutrient Dynamics
- Radioactivity and Radon Measurements
- Geochemistry and Geologic Mapping
- Radioactive contamination and transfer
- Karst Systems and Hydrogeology
- Water Quality and Pollution Assessment
- Marine and coastal ecosystems
- Plant Water Relations and Carbon Dynamics
- Radioactive element chemistry and processing
- Hydrology and Sediment Transport Processes
- Hydrocarbon exploration and reservoir analysis
- Paleontology and Stratigraphy of Fossils
- Oceanographic and Atmospheric Processes
- Hydraulic Fracturing and Reservoir Analysis
- Soil erosion and sediment transport
- Methane Hydrates and Related Phenomena
- Coastal wetland ecosystem dynamics
- CO2 Sequestration and Geologic Interactions
Commonwealth Scientific and Industrial Research Organisation
1994-2010
CSIRO Land and Water
1998-2009
GTx (United States)
2004
Weatherford College
2004
National Centre for Groundwater Research and Training
1989-1997
Australian National University
1987-1992
James Cook University
1990
Columbia University
1984-1988
Lamont-Doherty Earth Observatory
1984-1988
Hypotheses to explain the source of 1011 tons salt in groundwaters Murray Basin, south-eastern Australia, are evaluated; these (a) mixing with original sea water, (b) dissolution deposits, (c) weathering aquifer minerals and (d) acquisition solutes via rainfall. The total salinity chemistry many groundwater samples similar sea-water composition. However, their stable isotopic compositions (δ18O= –6.5 ‰; δ2H = –35) typical mean winter rainfall, indicating that all water has been flushed out...
Abstract Two environmental tracer methods are applied to the Ti‐Tree Basin in central Australia shed light on importance of recharge from floodouts ephemeral rivers this arid environment. Ground water carbon‐14 concentrations boreholes used estimate average rate over interval between where ground sample first entered saturated zone and bore. Environmental chloride samples provide estimates at exact point landscape zone. The results two approaches indicate that rates around one an extensive...
Annual natural discharge ( Q ) of the River Murray and its most extensive tributary, Darling system, is often inversely related to sea surface temperature (SST) anomalies in eastern tropical Pacific Ocean. These SST variations are components a planetary‐scale phenomenon referred as El Nino‐Southern Oscillation (ENSO). river historical values indicate that annual runoff from regions dominated by subtropical summer monsoon precipitation primarily responding temperate winter storms both...
Abstract During 1987, the Australian Bureau of Mineral Resources conducted a multidisciplinary investigation modern phosphorites on continental margin southeastern Australia between 28 and 32°S. The objectives work were to examine processes controlling cycling organic carbon bioactive elements, nitrogen, phosphorus, sulphur iron in sediments, investigate roles which these played formation phosphorites. Bacterial productivities, sulphate-reduction rates, sedimentary oxygen pore-water...
The stable isotope composition of water (δD and δ 18 O) chloride concentrations were measured monthly at 26 stations along the River Murray, Australia several major tributaries from December 1988 to June 1989. first four months had low natural runoff plus large irrigation diversions storage reservoirs. following three much higher (up a factor 5) river discharge. Deuterium oxygen compositions maximum range 50‰ 9‰, respectively, headwaters mouth. Chloride increased downstream with 1 180 × 10...
Flow regulation and water diversion for irrigation have considerably impacted the exchange of surface between Murray River its floodplains. However, way in which river has groundwater–surface interactions is not completely understood, especially regards to salinization accompanying vegetation dieback currently occurring many Groundwater–surface were studied over a 2 year period riparian area large floodplain (Hattah–Kulkyne, Victoria) using combination piezometric monitoring environmental...
ABSTRACT Observation of shelf sediments collected immediately before and after Cyclone Winifred crossed the central Great Barrier Reef (1 February 1986) confirmed that storm produced a normally graded, mixed terrigenous-carbonate layer extending 30 km offshore in water up to 43 m deep. Distinct post-Winifred changes cross-shelf distribution organic carbon carbonate mud-fraction sediment suggest suspended transport was extensive had multiple sources. On shelf-wide scale, is composed almost...
We investigate the relative importance of a number processes that affect Cl and 36 distribution in southwestern flow systems Great Artesian Basin, Australia, to provide more precise estimates age recharge rates. In situ production , secular variations rate its subsequent fallout as well rates diffusion stable from adjacent aquitards mask interpretation decay Cl/Cl along hydraulic gradients can preclude estimating absolute groundwater ages. However, mean velocities calculated concentrations...
Rivers are an important linkage in the global hydrological cycle, returning about 35%of continental precipitation to oceans. also most source of water for human use. Much world's population lives along large rivers, relying on them trade, transportation, industry, agriculture, and domestic supplies. The resulting pressure has led extreme regulation some river systems, often a degradation quantity quality For sustainable management supply flood‐drought cycles, ecosystem health, there is basic...
Abstract As vegetation usually excludes salt during water uptake, transpiration will increase the salinity of residual water. If source is sea water, then may become highly saline. In unconfined coastal aquifer tropical Burdekin River delta, northeastern Australia, areas saline ground with chloride concentrations up to almost three times that occur 15 km from present coastline, and are attributed by mangrove periods high level. Radiogenic ( 14 C) carbon isotope analyses indicate between...