A new generation of palaeomagnetic statistics. This project aims to build on recent advances in statistical inference to develop a new quantitative framework for palaeomagnetism. Palaeomagnetic analysis of Earth's ancient magnetic field helps us to derive plate tectonic reconstructions and to use geomagnetic reversals to date rock sequences. These applications depend on statistical methods that are either flawed or that lack sufficient diagnostic power to be useful for addressing increasingly co ....A new generation of palaeomagnetic statistics. This project aims to build on recent advances in statistical inference to develop a new quantitative framework for palaeomagnetism. Palaeomagnetic analysis of Earth's ancient magnetic field helps us to derive plate tectonic reconstructions and to use geomagnetic reversals to date rock sequences. These applications depend on statistical methods that are either flawed or that lack sufficient diagnostic power to be useful for addressing increasingly complex questions. Expected outcomes are an urgently needed new generation of palaeomagnetic statistical analysis methods. The project will provide quantitative tools that will benefit all palaeomagnetic applications across Earth Science and have widespread benefit and impact in academic and industrial research.Read moreRead less
The magnetisation of Earth’s lithosphere: a new view from space. Earth’s magnetic field is an invaluable resource for studying the structure and dynamics of our planet, yet the full nature of Earth's magnetisation remains poorly understood. This project will uncover the dominant sources of magnetisation close to Earth's surface using next-generation satellite data and recent theoretical advances. Expected outcomes include the development of innovative models of lithospheric magnetisation that wi ....The magnetisation of Earth’s lithosphere: a new view from space. Earth’s magnetic field is an invaluable resource for studying the structure and dynamics of our planet, yet the full nature of Earth's magnetisation remains poorly understood. This project will uncover the dominant sources of magnetisation close to Earth's surface using next-generation satellite data and recent theoretical advances. Expected outcomes include the development of innovative models of lithospheric magnetisation that will be used to gain crucial insights into the dynamic evolution of our planet's crust and uppermost mantle. The benefits of the project address both economic and environmental issues, unravelling the nature of structures that control both mineral systems and heat flow variations beneath the Antarctic ice sheet. Read moreRead less
Single-sample unmixing with machine learning: a rock magnetic frontier. Magnetic rock-forming minerals can record important information about Earth’s magnetic field and climatic changes. In rock magnetism, we seek to quantify magnetic property variations in geological materials. Existing quantification methods are limited and provide bulk characterisation of all magnetic particles in a material rather than diagnostic information concerning individual mineral components. This Project aims to deve ....Single-sample unmixing with machine learning: a rock magnetic frontier. Magnetic rock-forming minerals can record important information about Earth’s magnetic field and climatic changes. In rock magnetism, we seek to quantify magnetic property variations in geological materials. Existing quantification methods are limited and provide bulk characterisation of all magnetic particles in a material rather than diagnostic information concerning individual mineral components. This Project aims to develop a machine-learning framework to “unmix” and quantify each magnetic mineral component in single natural samples, and will unlock a new quantitative era in rock magnetism. It is expected to have impact beyond Earth science by enabling magnetic characterisation in physics, materials science, and industry.Read moreRead less
First-order reversal curve diagrams & quantitative environmental magnetism. The project intends to enable full quantitative separation of magnetic mineral mixtures in natural materials to unlock details of important environmental processes. Most efforts to understand ancient variations of Earth’s magnetic field using palaeomagnetism, or climate change using environmental magnetism, are complicated by the presence of mixed assemblages of magnetic rock-forming minerals. Understanding the recording ....First-order reversal curve diagrams & quantitative environmental magnetism. The project intends to enable full quantitative separation of magnetic mineral mixtures in natural materials to unlock details of important environmental processes. Most efforts to understand ancient variations of Earth’s magnetic field using palaeomagnetism, or climate change using environmental magnetism, are complicated by the presence of mixed assemblages of magnetic rock-forming minerals. Understanding the recording of palaeomagnetic information or decoding environmental processes requires separate quantification of each mineral component. The main aim of the project is to develop a method to unmix the magnetic components present in environmental and geological materials. The proposed approach is expected to unlock a new quantitative era in rock magnetism, and to have impacts in physics as well as Earth science.Read moreRead less
Unravelling the geodynamics of eastern Australia during the Permian: the link between plate boundary bending and basin formation. Using paleomagnetic and sedimentological investigations, this project will unravel the Permian tectonic history of eastern Australia, which has hitherto remained poorly understood. The reconstruction will provide a crucial component in our attempt to model the evolution of the Australian continent and its associated natural resources.
Understanding the Geodynamo: Putting Australia on the Map. This Project aims to construct high-quality Australian palaeomagnetic records from lake sediments for incorporation into models of Earth’s magnetic field history. Earth’s magnetic field is generated by a dynamo within our planet’s outer core, it underpins modern navigation and forms a shield against space radiation. International efforts to understand ancient geodynamo evolution lack Australian palaeomagnetic data, a shortcoming referred ....Understanding the Geodynamo: Putting Australia on the Map. This Project aims to construct high-quality Australian palaeomagnetic records from lake sediments for incorporation into models of Earth’s magnetic field history. Earth’s magnetic field is generated by a dynamo within our planet’s outer core, it underpins modern navigation and forms a shield against space radiation. International efforts to understand ancient geodynamo evolution lack Australian palaeomagnetic data, a shortcoming referred to as the “Australian data wasteland”. This Project aims to address this data deficiency and is expected to reinvigorate Australia’s role in understanding the geodynamo. Furthermore, models of Earth’s ancient magnetic field are anticipated to provide ages for Australian archaeological and climate records.Read moreRead less
Three dimensional geospatial model of the Australian continent from geologically constrained inverse modelling of the Earth's gravity and magnetic fields. This project enhances Australia's reputation in integration of geology and geophysics and will create a three dimensional model of the Australian crust that will image and define the geometry of the fundamental building blocks of the continent. The outcomes will create new concepts for resource exploration and hazard recognition.
Effect of climate boundary changes on the Southern Westerly Winds. This project aims to produce high quality data on how the Southern Westerly Winds (SWW) respond to largescale changes in climate boundary conditions over multiple glacial-interglacial cycles. Because the SWW are key drivers of Southern Hemisphere climate, Southern Ocean circulation and global carbon dioxide concentrations, it is important to understand how they respond to changes in boundary conditions. Uncertainty about how they ....Effect of climate boundary changes on the Southern Westerly Winds. This project aims to produce high quality data on how the Southern Westerly Winds (SWW) respond to largescale changes in climate boundary conditions over multiple glacial-interglacial cycles. Because the SWW are key drivers of Southern Hemisphere climate, Southern Ocean circulation and global carbon dioxide concentrations, it is important to understand how they respond to changes in boundary conditions. Uncertainty about how they do so limits attempts at accurate predictive climate modelling. This project will test conceptual models of SWW dynamics and provide essential boundary conditions for predictive climate models. The project intends to simultaneously build and support a research capacity and global network, and advance Australia’s knowledge and contribution in the area of global climate dynamics.Read moreRead less
Unlocking Earth’s inner secrets in deep time using palaeointensities. The geomagnetic field, generated in Earth's liquid outer core, provides Earth's biosphere and atmosphere with a critical protective shield from the bombardment of the solar wind. However, we still know little about the evolution of the geomagnetic field or the deep-time secrets it keeps. This project aims to study the varying intensity of the geomagnetic field during Earth’s middle life. The results will help decipher how the ....Unlocking Earth’s inner secrets in deep time using palaeointensities. The geomagnetic field, generated in Earth's liquid outer core, provides Earth's biosphere and atmosphere with a critical protective shield from the bombardment of the solar wind. However, we still know little about the evolution of the geomagnetic field or the deep-time secrets it keeps. This project aims to study the varying intensity of the geomagnetic field during Earth’s middle life. The results will help decipher how the Earth’s core responded to evolving tectonic and dynamic systems, including the supercontinent cycles, and when Earth’s solid inner core initiated. Such knowledge will help us to better understand how the Earth System evolved as a whole, and how such an evolution has led to the present day life and environment on Earth.Read moreRead less
Australian Laureate Fellowships - Grant ID: FL150100133
Funder
Australian Research Council
Funding Amount
$2,917,436.00
Summary
How the Earth works - toward building a new tectonic paradigm. How the Earth works - toward building a new tectonic paradigm: This fellowship project aims to build on the latest technological and conceptual advances to establish the patterns of Earth evolution, and use this information to examine a ground-breaking geodynamic hypothesis which links cyclic plate aggregation and dispersion to deep Earth processes. Half a century after the inception of plate tectonics theory, we are still unsure how ....How the Earth works - toward building a new tectonic paradigm. How the Earth works - toward building a new tectonic paradigm: This fellowship project aims to build on the latest technological and conceptual advances to establish the patterns of Earth evolution, and use this information to examine a ground-breaking geodynamic hypothesis which links cyclic plate aggregation and dispersion to deep Earth processes. Half a century after the inception of plate tectonics theory, we are still unsure how the Earth 'engine' works, particularly the forces that drive plate tectonics. The project involves extensive national and international collaboration to potentially create a paradigm shift in our understanding of global tectonics, and hopes to contribute to an understanding of the formation and distribution of Earth resources to provide a conceptual framework for their exploration.Read moreRead less