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Application of the multichannel self-potential method to detection of seepage from mine tailings impoundments. This project will use a modern multichannel geophysical data acquisition system to study short and long-term variations in self-potential measurements at a tailings dam. The project will use the self-potential method to detect fluid seepage paths through the dam wall, and will use numerical models to make quantitative estimates of seepage rates. The major outcomes of the project will ....Application of the multichannel self-potential method to detection of seepage from mine tailings impoundments. This project will use a modern multichannel geophysical data acquisition system to study short and long-term variations in self-potential measurements at a tailings dam. The project will use the self-potential method to detect fluid seepage paths through the dam wall, and will use numerical models to make quantitative estimates of seepage rates. The major outcomes of the project will be a rigorous appraisal of the utility of the self-potential method for mapping seepage in an operating mine environment, and construction of fluid flow paths through the dam which can be used to guide future remediation work.Read moreRead less
Time-lapse geophysical monitoring of acid mine drainage at Savage River Mine, North-western Tasmania. This project will apply geophysical methods to image and monitor the subsurface distribution, and short and long-term temporal variations in ground conductivity associated with Acid Mine Drainage (AMD) at the Savage River Mine, Tasmania. AMD is a major environmental problem affecting mining operations across Australia. Geophysical techniques are inexpensive means of mapping variations in subsu ....Time-lapse geophysical monitoring of acid mine drainage at Savage River Mine, North-western Tasmania. This project will apply geophysical methods to image and monitor the subsurface distribution, and short and long-term temporal variations in ground conductivity associated with Acid Mine Drainage (AMD) at the Savage River Mine, Tasmania. AMD is a major environmental problem affecting mining operations across Australia. Geophysical techniques are inexpensive means of mapping variations in subsurface electrical conductivity related to changes in groundwater levels and contaminant concentration. The major outcomes of this project will be development of appropriate geophysical methods and interpretation techniques for delineation and monitoring of AMD at sites characterised by high seasonal rainfall and significant topography.Read moreRead less
Submarine springs in the Great Barrier Reef Lagoon: the geological origin, physical properties and ecological significance of Wonky Holes. This project investigates submarine groundwater discharge (SGD) to the Great Barrier Reef (GBR) lagoon. As groundwaters often contain high loads of nutrients and other pollutants, point source SGDs called Wonky Holes, reputedly common yet scientifically unexplored in the GBR or elsewhere, may represent a significant pathway for the land-sea flux of these mat ....Submarine springs in the Great Barrier Reef Lagoon: the geological origin, physical properties and ecological significance of Wonky Holes. This project investigates submarine groundwater discharge (SGD) to the Great Barrier Reef (GBR) lagoon. As groundwaters often contain high loads of nutrients and other pollutants, point source SGDs called Wonky Holes, reputedly common yet scientifically unexplored in the GBR or elsewhere, may represent a significant pathway for the land-sea flux of these materials. This project will define the incidence and origin of Wonky Holes and determine the magnitude and physical and chemical properties of their discharge. These studies will advance our understanding of land-sea interactions, assist management of the GBR and improve regional hydrogeological models.Read moreRead less
Accurately locating the depth and distribution of saline waters with improved shallow conductivity sounding using broadcast radio transmissions. Conductivity meters such as the EM31 are in routine use for mapping shallow salinity, but provide no depth information. This research will provide methodology using broadcast radio transmissions to additionally provide the depth information needed to interpret shallow layering and inhomogeneity. Instruments will initially be tested on the ground, but a ....Accurately locating the depth and distribution of saline waters with improved shallow conductivity sounding using broadcast radio transmissions. Conductivity meters such as the EM31 are in routine use for mapping shallow salinity, but provide no depth information. This research will provide methodology using broadcast radio transmissions to additionally provide the depth information needed to interpret shallow layering and inhomogeneity. Instruments will initially be tested on the ground, but are ultimately intended to be applied from the air, where existing systems have no resolution in the top 5 m. The method will provide crucial root-zone data for precision agriculture in salt-affected areas, and address accurate salt mapping issues in the major efforts to combat Australia's salinity problems.Read moreRead less
Airborne electromagnetic estimation of groundwater quality and distribution in the top 100m of the earth. This research will develop processing methodology to predict groundwater concentration and quality in the top 100m of the earth, using continuously sampled airborne electromagnetic data. The method to be developed will process received responses to separate and identify propagation delays, distinct from the usual diffusive delays caused by shallow conductive materials. The extracted propagat ....Airborne electromagnetic estimation of groundwater quality and distribution in the top 100m of the earth. This research will develop processing methodology to predict groundwater concentration and quality in the top 100m of the earth, using continuously sampled airborne electromagnetic data. The method to be developed will process received responses to separate and identify propagation delays, distinct from the usual diffusive delays caused by shallow conductive materials. The extracted propagation delays then predict ground moisture content. With proposed changes to transmitter hardware, we can also achieve improved shallow resolution of conductive structures, such as shallow saline groundwater layers. However, the new method will pioneer the remote detection of fresh waters.Read moreRead less
Special Research Initiatives - Grant ID: SR0354668
Funder
Australian Research Council
Funding Amount
$10,000.00
Summary
Australian City and Regional Network. The Network aims to sponsor, sustain and encourage multidisciplinary and transdisciplinary research into problems in and of Australian cities and the reasons for their form and structure. It will develop a national collaborative research training program. The network will develop a communication path between academics, industry and government enabling the development of a more informed exploration of urban development policies. It will also lead to the ident ....Australian City and Regional Network. The Network aims to sponsor, sustain and encourage multidisciplinary and transdisciplinary research into problems in and of Australian cities and the reasons for their form and structure. It will develop a national collaborative research training program. The network will develop a communication path between academics, industry and government enabling the development of a more informed exploration of urban development policies. It will also lead to the identification of new economic opportunities for the development of cities and regions.Read moreRead less
Linkage Infrastructure, Equipment And Facilities - Grant ID: LE0238492
Funder
Australian Research Council
Funding Amount
$139,000.00
Summary
State of Art Particle Size Analysers. Particulate materials are encountered in many different forms, sizes and environments, and vastly different areas such as biological, environmental, chemical and materials engineering. Particle size and its distribution are fundamental properties of these materials. Existing particle size measuring equipment in Australia is poor as currently available facilities cannot accurately resolve particle sizes in concentrated dispersions, nor can they visualise the ....State of Art Particle Size Analysers. Particulate materials are encountered in many different forms, sizes and environments, and vastly different areas such as biological, environmental, chemical and materials engineering. Particle size and its distribution are fundamental properties of these materials. Existing particle size measuring equipment in Australia is poor as currently available facilities cannot accurately resolve particle sizes in concentrated dispersions, nor can they visualise the in situ structure and size of fragile assemblies of particles (flocs). This proposal seeks funding for a suite of complementary particle size analysers, for use in an extensive number of research areas, to specifically address these critical current deficits.Read moreRead less
Environmental controls over Fe availability and transport in a forested coastal catchment. Iron is one of a number of elements that are mobilised in catchments, have recognised detrimental impacts to marine settings and are known to be nutrients for toxic cyanobacteria blooms. Knowledge of controls over distribution of Fe is important in catchment management and for sustainable forestry. The total catchment approach will result in an understanding of release and transport of Fe, and other heav ....Environmental controls over Fe availability and transport in a forested coastal catchment. Iron is one of a number of elements that are mobilised in catchments, have recognised detrimental impacts to marine settings and are known to be nutrients for toxic cyanobacteria blooms. Knowledge of controls over distribution of Fe is important in catchment management and for sustainable forestry. The total catchment approach will result in an understanding of release and transport of Fe, and other heavy metals. The outcomes of the study will enable useful comparison to coastal plantations elsewhere in Australia, and overseas. Determination of the relationship to rainfall and hydrological processes will enhance these comparisons plus consideration of climatic change.
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Impacts of climate change on coastal floodplain wetland biogeochemistry and surface water quality. The most vulnerable Australian landscapes to global warming driven sea-level rise are our low-lying coastal floodplains. Seawater inundation dramatically affects soil chemistry and water quality. Over 74,000 km2 of the low-lying coastal floodplains of Australia contain acid sulfate soils. For these soils, seawater inundation has the potential to greatly enhance the release of acidity, with a high c ....Impacts of climate change on coastal floodplain wetland biogeochemistry and surface water quality. The most vulnerable Australian landscapes to global warming driven sea-level rise are our low-lying coastal floodplains. Seawater inundation dramatically affects soil chemistry and water quality. Over 74,000 km2 of the low-lying coastal floodplains of Australia contain acid sulfate soils. For these soils, seawater inundation has the potential to greatly enhance the release of acidity, with a high capacity to severely degrade wetlands, estuaries and farmland. This project will directly contribute to our national capacity to assess and manage impacts from climate change, providing greater protection of our coastal floodplains resources.Read moreRead less
Sustainable farming in Australia: Market instruments for improved land management. Sustainable farming has become a national priority. As climate change and global economic pressures increase the problems facing rural areas, Australian governments have attempted to combine more sustainable land management with a competitive agricultural sector. Several policy instruments using market incentives have been proposed to manage the competing demands of farm viability and environmental sustainability. ....Sustainable farming in Australia: Market instruments for improved land management. Sustainable farming has become a national priority. As climate change and global economic pressures increase the problems facing rural areas, Australian governments have attempted to combine more sustainable land management with a competitive agricultural sector. Several policy instruments using market incentives have been proposed to manage the competing demands of farm viability and environmental sustainability. This project will examine the responses of beef, dairy and grain farmers to these initiatives and their potential for addressing pressing environmental issues. The research will make a vital contribution to the design of policies for the future of farming, resilient rural communities and an environmentally sustainable Australia.Read moreRead less