Longshore Sediment Supply to the Deep Ocean. The current model to supply sand to deep water off continental margins is that provided by rivers operating at low sea level. We propose an alternative model in which sand is provided by longshore transport to deep water at high sea level north of Fraser Island, SE Queensland. Here we will test the validity of our new model by site studies of sea bottom morphology, composition and dynamics. If the model proves true, we will have: 1) generated an entir ....Longshore Sediment Supply to the Deep Ocean. The current model to supply sand to deep water off continental margins is that provided by rivers operating at low sea level. We propose an alternative model in which sand is provided by longshore transport to deep water at high sea level north of Fraser Island, SE Queensland. Here we will test the validity of our new model by site studies of sea bottom morphology, composition and dynamics. If the model proves true, we will have: 1) generated an entirely new exploration model for deepwater hydrocarbons, 2) provided new expertise and seabed maps for generating a superior marine naval defence capability.Read moreRead less
Efficient Processing of Complex Spatial Queries. Similarity search and join are two of the most popular yet complex queiries in spatial databases. They are also two of the major spatial data analysis paradigms. To complement the existing techniques, this project aims to investigate a more complex and important form of these two problems, and to develop novel framework to approach the proposed problems. The successful achievements of the project will not only bring new spatial data analysis techn ....Efficient Processing of Complex Spatial Queries. Similarity search and join are two of the most popular yet complex queiries in spatial databases. They are also two of the major spatial data analysis paradigms. To complement the existing techniques, this project aims to investigate a more complex and important form of these two problems, and to develop novel framework to approach the proposed problems. The successful achievements of the project will not only bring new spatial data analysis techniques but also deliever effective solutions to a number of real-life apllications.Read moreRead less
Airfoil Noise Control in Complex Turbulence. This project aims to understand how to control noise created by the interaction of airfoils with complex, real-world turbulence. This project is significant because it will develop novel serrated and porous leading edges tailored for complex turbulence for the first time. Using innovative experimental and theoretical techniques, the project will dramatically advance the science of aeroacoustics. The expected outcomes of the project will be substantial ....Airfoil Noise Control in Complex Turbulence. This project aims to understand how to control noise created by the interaction of airfoils with complex, real-world turbulence. This project is significant because it will develop novel serrated and porous leading edges tailored for complex turbulence for the first time. Using innovative experimental and theoretical techniques, the project will dramatically advance the science of aeroacoustics. The expected outcomes of the project will be substantial reductions in noise from aircraft, wind turbines, submarines and drones. This will provide significant benefits such as a reduction in environmental noise pollution, better public health and submarines with increased stealth.Read moreRead less
Microwave-modulated optical systems for free-space and undersea communications. Although offering flexible, rapid deployment, free space and underwater comunications have not kept up with progress in optical fibre communications, and current systems are signficantly restricted in range and data rate. To address these needs, we will develop novel laser systems using coherent detection, with infrared output for eyesafe transmission in air, and blue-green output for transmission underwater. The s ....Microwave-modulated optical systems for free-space and undersea communications. Although offering flexible, rapid deployment, free space and underwater comunications have not kept up with progress in optical fibre communications, and current systems are signficantly restricted in range and data rate. To address these needs, we will develop novel laser systems using coherent detection, with infrared output for eyesafe transmission in air, and blue-green output for transmission underwater. The signal is a microwave modulation on the optical carrier, which permits longer-range transmission while maintaining signal coherence. Key advantages include increased detection sensitivity, and potential to scale up the modulation frequency and the power for higher data rates and longer propagation distance.Read moreRead less
Decision making and mission planning for Unmanned Underwater Vehicles. The work specifically addresses the National Research Priorities
in sustainable use of Australia's biodiversity, techniques for
transforming Australian industry and Safeguarding Australia.
Without a thorough understanding of processes that affect the
state of health of our oceans they will continue to be affected by
natural phenomena and stresses caused by human activity. A more
comprehensive understanding of these natu ....Decision making and mission planning for Unmanned Underwater Vehicles. The work specifically addresses the National Research Priorities
in sustainable use of Australia's biodiversity, techniques for
transforming Australian industry and Safeguarding Australia.
Without a thorough understanding of processes that affect the
state of health of our oceans they will continue to be affected by
natural phenomena and stresses caused by human activity. A more
comprehensive understanding of these natural systems and the
interplay with human activities is therefore essential.Read moreRead less
Phase transitions in ultra-thin epitaxial polar oxide films. In this project we will utilize sophisticated thin film fabrication and characterization techniques( such as in-situ x-ray diffraction) and the most advanced computational materials science tools. Therefore this project will provide postgraduates and young researchers to cutting edge research, boosting the enormous potential of Australia in basic materials science. It brings together early career researchers with complimentary expert ....Phase transitions in ultra-thin epitaxial polar oxide films. In this project we will utilize sophisticated thin film fabrication and characterization techniques( such as in-situ x-ray diffraction) and the most advanced computational materials science tools. Therefore this project will provide postgraduates and young researchers to cutting edge research, boosting the enormous potential of Australia in basic materials science. It brings together early career researchers with complimentary expertise areas to interact with each other. It emphasizes cross-disciplinary research and exchange of research ideas across three continents; thus providing the ideal training ground for young researchers who are expected to make a major contribution to both, fundamental and applied research in the future.Read moreRead less
Prediction of radiated noise from marine propellers. Underwater noise radiated from marine vessels is a significant problem for research, fishing and military vessels, and is a major source of pollution in the marine environment. The major source contributing to underwater noise is due to the propeller. This work will develop numerical models with experimental validation that can accurately predict the sources of noise generated by marine propellers and acoustic signatures of marine vessels due ....Prediction of radiated noise from marine propellers. Underwater noise radiated from marine vessels is a significant problem for research, fishing and military vessels, and is a major source of pollution in the marine environment. The major source contributing to underwater noise is due to the propeller. This work will develop numerical models with experimental validation that can accurately predict the sources of noise generated by marine propellers and acoustic signatures of marine vessels due to propeller motion. This work has great significance for Australia’s construction and military maritime industries. The technologies developed in this project are also applicable to rotors in other industries such as in aircraft, helicopters and wind turbines.Read moreRead less
High-resolution multispectral underwater imaging for coral reef mapping and characterization. This project will enable improved mapping and monitoring from underwater vehicles and divers. We expect to aid the sustainable use of Australia's biodiversity in the specific case of corals reefs by increasing the quality of survey data and the extent, precision and repeatability of surveys. This project will develop technologies to assist monitoring the Great Barrier Reef and determining effects of man ....High-resolution multispectral underwater imaging for coral reef mapping and characterization. This project will enable improved mapping and monitoring from underwater vehicles and divers. We expect to aid the sustainable use of Australia's biodiversity in the specific case of corals reefs by increasing the quality of survey data and the extent, precision and repeatability of surveys. This project will develop technologies to assist monitoring the Great Barrier Reef and determining effects of management strategies. Since these developments focus on imaging and mapping the ocean floors they could also be of use in developing deep earth resources.
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Forecasting wave breaking in directional seas. Wave breaking in Australia's coastal and open ocean regions has significant consequences for weather forecasting, marine safety, defence and renewable energy, yet no conceptual or computing framework exists for this fundamental process. This innovative project extends our recent advances in predicting wave breaking onset and strength of unidirectional wave groups to forecast breaking in realistic directional wind seas. The results of this project wi ....Forecasting wave breaking in directional seas. Wave breaking in Australia's coastal and open ocean regions has significant consequences for weather forecasting, marine safety, defence and renewable energy, yet no conceptual or computing framework exists for this fundamental process. This innovative project extends our recent advances in predicting wave breaking onset and strength of unidirectional wave groups to forecast breaking in realistic directional wind seas. The results of this project will provide the scientific basis needed to include reliable breaking wave information in forecast models, and will improve their accuracy. It will also increase the international competitiveness of Australian commerce reliant on accurate marine environmental forecasts.
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Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This proj ....Cyclic Fatigue Mechanisms in New Lead-Free Piezoelectric Ceramics. Piezoceramics are an important component in many items in modern day Australian life. However, they present a growing environmental concern, particularly for disposal, because they contain lead oxide and must often be disposed of prematurely due to component failure. Furthermore, many key Australian industries manufacture and use piezoceramics in fields ranging from mineral exploration, to imaging to biomedical devices. This project will enable the development of lead-free alternatives to current materials and more reliable materials which will reduce the need for waste disposal.Read moreRead less