Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly ....Dynamics of Suppressed Mixing Regimes in Australian Rivers. This study aims to further the fundamental science of turbulent mixing in the context of flow in Australian rivers. The focus is on prolonged low flow conditions which when coupled with warm surface temperatures cause the water column to become thermally stratified which then suppresses turbulent mixing. The extreme scale of the river systems has made investigating the true dynamics of the strongly stratified mixing regimes particularly challenging. By taking world first in-situ measurements of turbulent mixing and undertaking high resolution numerical simulations this study will provide definitive data which will allow correct characterization of the mixing regimes and how they are associated with river flow conditions.Read moreRead less
Institutional transitions to sustainable agriculture: An inter-disciplinary analysis of a novel common-property resource governance system. Efforts to overcome the severe degradation of land resources supporting agriculture and human communities continue to be constrained by institutions and social norms. The knowledge needed for a transition to sustainable agricultural landscapes through institutional change is inadequate. A collaboration between specialists in economics, politics, sociology, ....Institutional transitions to sustainable agriculture: An inter-disciplinary analysis of a novel common-property resource governance system. Efforts to overcome the severe degradation of land resources supporting agriculture and human communities continue to be constrained by institutions and social norms. The knowledge needed for a transition to sustainable agricultural landscapes through institutional change is inadequate. A collaboration between specialists in economics, politics, sociology, ecology and soil science at the University of New England and graziers in an upper Murray-Darling subcatchment will analyse the transition to a common-property institution on this subcatchment. It will make a distinctively Australian contribution to international efforts to understand such transitions, and serve as a model for progress towards sustainability elsewhere in Australia.
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A Fourier approach to address low-frequency variability bias in hydrology. This project aims to develop a mathematical framework to better simulate the occurrence of sustained anomalies, such as droughts and long periods of flooding, into the future. These events increase water insecurity and result in loss of revenue, livelihoods and lives. Hydrological planning requires knowledge of how such sustained extremes will change in the future. Current alternatives for simulating such changes for futu ....A Fourier approach to address low-frequency variability bias in hydrology. This project aims to develop a mathematical framework to better simulate the occurrence of sustained anomalies, such as droughts and long periods of flooding, into the future. These events increase water insecurity and result in loss of revenue, livelihoods and lives. Hydrological planning requires knowledge of how such sustained extremes will change in the future. Current alternatives for simulating such changes for future climates are inadequate for catchment-scale planning to proceed. The project proposes a strategy for post-processing hydrological simulations of the future using an elegant frequency-domain approach. It expects to provide the tools needed to develop hydrologic infrastructure, such as water supply reservoirs, that secure our water resources for the generations to come.Read moreRead less
Transitioning to a water-secure future in the Basin. Increased water scarcity threatens the viability of the Murray-Darling Basin. There has been little analysis conducted of the consequences of water market impediments. The economic dimensions of trade impediments, water management, water market intervention and the net social benefits of water markets are at the core of this project. In particular, this project aims to explore: the impact of impediments and policy in water markets; how further ....Transitioning to a water-secure future in the Basin. Increased water scarcity threatens the viability of the Murray-Darling Basin. There has been little analysis conducted of the consequences of water market impediments. The economic dimensions of trade impediments, water management, water market intervention and the net social benefits of water markets are at the core of this project. In particular, this project aims to explore: the impact of impediments and policy in water markets; how further water market products may increase water market efficiency; and, the nature and sources of transactions costs in markets. Benefits from this project will enhance resilience and adaptation of irrigators to future climate change and water shortages, as well as providing future policy guidance.Read moreRead less
High resolution digital soil mapping. Soil mapping is a key part of land-resource assessment for sustainable environmental management. This project aims to build a methodology to provide a high quality digital soil maps. The output will enable the use of soil data and information to give a clear understanding of the status of, and changes in, the nation's land, vegetation and water resources and implications for their sustainable use.
Investigating Linkages Among Individual Decision Rules, Properties of Experimental Designs and Choice Models In Environmental Economics Applications. Discrete Choice Experiments or 'stated preference' (SP) surveys are increasingly being used to estimate public benefits of proposed environmental policy changes. The accuracy of environmental policy analyses and forecasts of welfare changes based on SP models depends heavily on unbiased parameter estimates. Our project aims to assess what happens i ....Investigating Linkages Among Individual Decision Rules, Properties of Experimental Designs and Choice Models In Environmental Economics Applications. Discrete Choice Experiments or 'stated preference' (SP) surveys are increasingly being used to estimate public benefits of proposed environmental policy changes. The accuracy of environmental policy analyses and forecasts of welfare changes based on SP models depends heavily on unbiased parameter estimates. Our project aims to assess what happens if common assumptions about consumer preferences in SP surveys are violated. We also study whether exploratory analysis methods can detect the violations to guide future research and applications. Successful completion of this project will lead to more accurate policy analyses and forecasts based on discrete choice models.Read moreRead less
Digital soil mapping: a contribution to the resolution of the soil information crisis. Soil mapping is a key part of land-resource assessment for sustainable environmental management. Australia and the world have a soil information crisis - the soil is not mapped at sufficient resolution for effective management. This is mainly caused by the large expense of conventional soil survey. This project aims to develop a radical and robust, quantitative and cost-effective methodology for digital soil m ....Digital soil mapping: a contribution to the resolution of the soil information crisis. Soil mapping is a key part of land-resource assessment for sustainable environmental management. Australia and the world have a soil information crisis - the soil is not mapped at sufficient resolution for effective management. This is mainly caused by the large expense of conventional soil survey. This project aims to develop a radical and robust, quantitative and cost-effective methodology for digital soil mapping. We will test and modify the approach in two areas in eastern Australia and transfer the methodology and products to the scientific community, and agencies charged with the responsibility for soil assessment.Read moreRead less
Tracking flood waters over Australia using space gravity data. This project aims to assess the utility of near-real-time data from the currently operating space gravity satellite mission to quantify and track flood waters in Australia. Through analysis of the satellite data and fusion of observed signals with rainfall, river flows and conventional hydrological modelling, it expects to create new knowledge of soil moisture and movement of flood waters. Expected outcomes include a capability to im ....Tracking flood waters over Australia using space gravity data. This project aims to assess the utility of near-real-time data from the currently operating space gravity satellite mission to quantify and track flood waters in Australia. Through analysis of the satellite data and fusion of observed signals with rainfall, river flows and conventional hydrological modelling, it expects to create new knowledge of soil moisture and movement of flood waters. Expected outcomes include a capability to improve hydrological models by including the information of water signals obtained from the near-real-time observations. This should provide significant benefits such as more accurate land saturation maps and better predictions of runoff and flood risk.Read moreRead less
Water for Australia's future - reducing fears and increasing acceptance of alternative water sources through public information. Australia is in the midst of a water crisis. Available water sources are dwindling. Alternative water sources are key to Australia's sustainable water future. National and international experiences show that while alternative water treatment technologies are available, public acceptance is the most important factor to determining the successful implementation of altern ....Water for Australia's future - reducing fears and increasing acceptance of alternative water sources through public information. Australia is in the midst of a water crisis. Available water sources are dwindling. Alternative water sources are key to Australia's sustainable water future. National and international experiences show that while alternative water treatment technologies are available, public acceptance is the most important factor to determining the successful implementation of alternative water schemes. This project will study public acceptance of a range of alternative water schemes in Australia. It will identify barriers to adoption of these alternatives and highlight preferred options by the community. The information needs of Australians will be identified and optimal communication strategies developed.Read moreRead less
Uncertainty quantification in terrestrial hydrologic systems. This project aims to develop a framework to simulate, quantify and analyse the uncertainty in streamflow and vegetation dynamics via approximate Bayesian computation. Water is a fundamental resource, and a difficulty in water resource management is to make predictions in a changing environment. Uncertainties in predictions of natural systems due to observational and model error make this more difficult. It is anticipated that the resu ....Uncertainty quantification in terrestrial hydrologic systems. This project aims to develop a framework to simulate, quantify and analyse the uncertainty in streamflow and vegetation dynamics via approximate Bayesian computation. Water is a fundamental resource, and a difficulty in water resource management is to make predictions in a changing environment. Uncertainties in predictions of natural systems due to observational and model error make this more difficult. It is anticipated that the results from this project will advance uncertainty analysis in hydrology and help understand how different types of data and information can inform model characterisation. This will be useful in providing vital information on the attributes and extent of uncertainty to inform water resources analysis, management and decision making.Read moreRead less