Understanding and modelling of interannual hydroclimatic variability in the context of historic streamflow. Recent persistently dry conditions in Australia have triggered water restrictions in major cities and re-emphasised the importance of water to this country. This project represents an integrated package of research that will enhance our understanding of interannual hydroclimatic variability, and its implications for land and water resources systems. The methodologies and model developed he ....Understanding and modelling of interannual hydroclimatic variability in the context of historic streamflow. Recent persistently dry conditions in Australia have triggered water restrictions in major cities and re-emphasised the importance of water to this country. This project represents an integrated package of research that will enhance our understanding of interannual hydroclimatic variability, and its implications for land and water resources systems. The methodologies and model developed here will directly lead to more informed decision making for sustainable use and management of Australia's increasingly scarce natural resources to cope with changing climate over a range of time scales. This is particularly important for Australia because of its higher interannual hydroclimate variability compared to elsewhere in the world.Read moreRead less
Efffective Management of Water Resources in Semiarid Regions Using Remote Sensing. Due to the vast expense and difficulties to access many areas from the ground, there is currently no effective system for assessing and managing water resources over many large semi-arid regions of the world. Through the study of two complementary Basins - The Murray and Lake Chad Basins - we propose a new approach based on satellite imagery to provide regular and detailed information on the state of our water res ....Efffective Management of Water Resources in Semiarid Regions Using Remote Sensing. Due to the vast expense and difficulties to access many areas from the ground, there is currently no effective system for assessing and managing water resources over many large semi-arid regions of the world. Through the study of two complementary Basins - The Murray and Lake Chad Basins - we propose a new approach based on satellite imagery to provide regular and detailed information on the state of our water resources in these areas. These innovative techniques will yield new information on critical water issues: water availability, salinity, groundwater/surface water interactions, climate and land use change impact. This project provides the basis for sustainable water use in regional Australia.Read moreRead less
Connected Water in Semi Arid Environments. Water is undoubtedly our most valuable resource, and continued economic and social development is critically dependant on water resources. Ephemeral rivers in semi-arid areas that lie above the water table commonly recharge the underlying aquifers. In much of the Murray Basin of southeast Australia, river recharge has provided rare fresh groundwater that is both a potential source of water for irrigation and domestic supply and a buffer to saline region ....Connected Water in Semi Arid Environments. Water is undoubtedly our most valuable resource, and continued economic and social development is critically dependant on water resources. Ephemeral rivers in semi-arid areas that lie above the water table commonly recharge the underlying aquifers. In much of the Murray Basin of southeast Australia, river recharge has provided rare fresh groundwater that is both a potential source of water for irrigation and domestic supply and a buffer to saline regional groundwater entering the rivers as baseflow. This project will allow the risk to these groundwater lenses from landuse changes and river regulation to be quantified as well as constraining whether the water resources may be used sustainably. Read moreRead less
Salinity processes in Lake Eyre Basin rivers. The unregulated rivers of the Lake Eyre Basin (LEB) provide a unique opportunity to study natural salinisation processes at multiple scales, in systems that have hydrological and biological similarities with dryland rivers in the Murray Darling Basin (MDB) and elsewhere. The rivers of the LEB maintain a high quality of ecological health despite salinity levels that can vary over two orders of magnitude with changing flow conditions. This project wil ....Salinity processes in Lake Eyre Basin rivers. The unregulated rivers of the Lake Eyre Basin (LEB) provide a unique opportunity to study natural salinisation processes at multiple scales, in systems that have hydrological and biological similarities with dryland rivers in the Murray Darling Basin (MDB) and elsewhere. The rivers of the LEB maintain a high quality of ecological health despite salinity levels that can vary over two orders of magnitude with changing flow conditions. This project will study salinity processes in the unregulated rivers of LEB and identify the dynamics of stream salinity using a combination of novel tracer and hydrological measurements and modelling.Read moreRead less
Urban subsurface flow pathways from stormwater infiltration. This project aims to understand how water (and associated pollutants) move through the urban landscape. Urban stormwater runoff degrades streams, causing erosion, pollution and loss of biodiversity. Stormwater infiltration can reduce runoff volumes and pollutant loads and could restore stream baseflows, lost through creation of impervious areas. In reality, however, the fate of infiltrated stormwater in the urban landscape is unknown. ....Urban subsurface flow pathways from stormwater infiltration. This project aims to understand how water (and associated pollutants) move through the urban landscape. Urban stormwater runoff degrades streams, causing erosion, pollution and loss of biodiversity. Stormwater infiltration can reduce runoff volumes and pollutant loads and could restore stream baseflows, lost through creation of impervious areas. In reality, however, the fate of infiltrated stormwater in the urban landscape is unknown. This project is expected to predict where infiltration may damage waterway health, saving money on repairs.Read moreRead less
The propagation of gravity currents over complex terrain. Dust storms, volcanic eruptions, rivers rushing sediment into lakes and seas, and spillages of toxic liquids and gases, are all examples of environmental problems that can occur, and when they do, they threaten both wild life and human communities. This project involves research that will provide quantitative understanding of key processes in these problems from which reliable software will be built to predict their consequences. The soft ....The propagation of gravity currents over complex terrain. Dust storms, volcanic eruptions, rivers rushing sediment into lakes and seas, and spillages of toxic liquids and gases, are all examples of environmental problems that can occur, and when they do, they threaten both wild life and human communities. This project involves research that will provide quantitative understanding of key processes in these problems from which reliable software will be built to predict their consequences. The software will produce an animation of dust containing fluids moving over a landscape of arbitrary complexity.Read moreRead less
Gravity Changes, Soil Moisture and Data Assimilation. This project will assess the utility of space and ground based gravity measurements for monitoring changes in the hydrological cycle at regional scales. At present there are no methods available for monitoring changes in terrestrial water storage over the globe, despite their importance for assessing the effects of large-scale changes in land use and climate change. The launch of NASA's Gravity Recovery and Climate Experiment satellites later ....Gravity Changes, Soil Moisture and Data Assimilation. This project will assess the utility of space and ground based gravity measurements for monitoring changes in the hydrological cycle at regional scales. At present there are no methods available for monitoring changes in terrestrial water storage over the globe, despite their importance for assessing the effects of large-scale changes in land use and climate change. The launch of NASA's Gravity Recovery and Climate Experiment satellites later this year provides a 5-year window of opportunity to undertake ground-based research to test this innovative technique for monitoring terrestrial water storage from gravity measurements - something that has been shown to be possible theoretically, but has not been testable until now.Read moreRead less
Improved rainfall measurement using mobile phone tower link attenuation. The project aims to use the microwave link data between mobile phone towers to complement the sparse rain gauge network in urban areas, to allow more accurate near-real-time monitoring of rainfall. Accurate near-real-time precipitation data at high resolution are critical to flash flood forecasting in and around Australia's capital cities. Current estimates suffer from the limited availability of rain gauge data in urban ar ....Improved rainfall measurement using mobile phone tower link attenuation. The project aims to use the microwave link data between mobile phone towers to complement the sparse rain gauge network in urban areas, to allow more accurate near-real-time monitoring of rainfall. Accurate near-real-time precipitation data at high resolution are critical to flash flood forecasting in and around Australia's capital cities. Current estimates suffer from the limited availability of rain gauge data in urban areas. However, mobile phone towers abound and the microwave links between them can provide information on rainfall intensity, meaning that these data could be used to supplement the rain gauge data. This project plans to develop the technology to generate precipitation maps using mobile phone network link, rain gauge and weather radar data.Read moreRead less
Assessing Water Supply Security in a Nonstationary Environment. About 25% of the global population currently has inadequate access to safe and secure water. This number is expected to rise to 50% by 2050 due to increased populations and reduced river flows. While a visible water crisis (such as the one in Cape Town in 2018) can culminate in the funding of new water supply infrastructure, a planned push for infrastructure augmentation often stalls due to contradictory projections of how much wate ....Assessing Water Supply Security in a Nonstationary Environment. About 25% of the global population currently has inadequate access to safe and secure water. This number is expected to rise to 50% by 2050 due to increased populations and reduced river flows. While a visible water crisis (such as the one in Cape Town in 2018) can culminate in the funding of new water supply infrastructure, a planned push for infrastructure augmentation often stalls due to contradictory projections of how much water will be available in the future. To address this, a novel alternative for assessing water security is proposed. Our approach assesses change using historical information on river flow and water demand, adapting these to form projections that exhibit greater reliability than currently existing alternatives.Read moreRead less
An integrated investigation of nutrient generation and delivery processes and pathways from paddock to small catchment scales. Improving water quality, primarily through reducing nutrient concentrations, remains a massive challenge for effective catchment management in Australia. Through a multidisciplinary approach including soil science, hydrology and aquatic chemistry, this project will develop an integrated catchment system understanding of water quality behaviour. This understanding will ....An integrated investigation of nutrient generation and delivery processes and pathways from paddock to small catchment scales. Improving water quality, primarily through reducing nutrient concentrations, remains a massive challenge for effective catchment management in Australia. Through a multidisciplinary approach including soil science, hydrology and aquatic chemistry, this project will develop an integrated catchment system understanding of water quality behaviour. This understanding will greatly improve the scientific underpinning of catchment water quality management and prediction, thus supporting improvements in the sustainability of Australia's water management. The work will focus on catchments with high intensity livestock grazing, which tend to be located in high rainfall areas near coasts where significant issues of water quality management exist.Read moreRead less