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The seismic significance of water and partial melting in planetary interiors. Novel laboratory techniques will be used to measure the influence of dissolved water on the seismic properties of the deep interiors of Earth and Moon. The outcome will be new insight into the crucial role of water in the formation and subsequent evolution of our dynamic planet and its more quiescent moon.
Tracking water on planetary surfaces using data from the Curiosity rover, the laboratory, meteorites and Australian field sites. A fundamental question in science is why does Earth have so much liquid water, but other planets do not? This project will answer this question using the Curiosity rover on Mars, studying alteration minerals that record the action of water. The project will develop new methods to improve our understanding of alteration minerals in martian meteorites, under controlled ....Tracking water on planetary surfaces using data from the Curiosity rover, the laboratory, meteorites and Australian field sites. A fundamental question in science is why does Earth have so much liquid water, but other planets do not? This project will answer this question using the Curiosity rover on Mars, studying alteration minerals that record the action of water. The project will develop new methods to improve our understanding of alteration minerals in martian meteorites, under controlled environmental conditions and in field samples that are relevant for Mars. It aims to build expertise in the environmental aspects of planetary surfaces and in novel instrumentation. This research will improve methods to examine returned extraterrestrial samples, to evaluate land degradation and to search for energy and ore deposits.Read moreRead less
Bromine isotopic evolution of the Earth and solar system. A world first capability of innovative isotopic tracing within the earth and solar system materials will be developed. Insights into how planets are formed and the transport of materials and heat within them will be tracked through the application of the naturally occurring isotopes of Bromine.
Consequences of extraterrestrial impacts on the biosphere and geosphere. This project will investigate whether high-velocity meteorite impacts can account for the Earth's mass extinctions and whether meteorite impacts and mass extinctions were synchronous. This work will help scientists understand the long-term climatic and biologic effects of massive injections of greenhouse gases into the atmosphere.
Experimental investigation of the fractionation of non-traditional stable isotopes by planetary processes. New analytical methods enable small differences in the isotopic ratios of many metals to be measured, but our understanding of the causes is rudimentary. This project will determine experimentally what geological processes would change the isotopic ratios of some common metals.
Structure of crust on Mars. This project aims to start a new multidisciplinary field linking impact physics and seismology. This project involves numerical modelling of meteoroid impact-induced seismic activity on Mars, using the state-of-the-art hydro-code, a national supercomputing facility, and knowledge built on the meteorite hunting by the Dessert Fireball Network. High-resolution numerical results will aid the analyses of impact-seismic data obtained by the forthcoming InSight mission to M ....Structure of crust on Mars. This project aims to start a new multidisciplinary field linking impact physics and seismology. This project involves numerical modelling of meteoroid impact-induced seismic activity on Mars, using the state-of-the-art hydro-code, a national supercomputing facility, and knowledge built on the meteorite hunting by the Dessert Fireball Network. High-resolution numerical results will aid the analyses of impact-seismic data obtained by the forthcoming InSight mission to Mars (in 2018) with a single important aim, to decipher the crustal structure of Mars, the planet that is the most similar to the Earth in our solar system.Read moreRead less
Discovery Early Career Researcher Award - Grant ID: DE180100584
Funder
Australian Research Council
Funding Amount
$342,949.00
Summary
Impact processes and evolution of the Martian crust. The project aims to define the crustal structure of Mars, using three-dimensional hydrodynamic modelling, experiments and geophysical data obtained from Mars. This will be achieved by the analysis of impact-related seismic data obtained by the forthcoming mission to Mars, along with already available remote sensing data of Mars. This project will start a new multidisciplinary field linking numerical impact physics and seismology.
Nanoscale repositories of the geological record of Earth and other planets. Rhenium-Osmium (Re-Os) dating is used widely to infer Earth's evolution, but most samples are hydrated, with consequent mobility of Re, which is problematic for interpretation of isotope results. This project will solve this problem by determining the effects of hydration on Re and Os. Further, our knowledge of the mobility of Re and related elements will allow us to recognise rocks that once interacted with water, even ....Nanoscale repositories of the geological record of Earth and other planets. Rhenium-Osmium (Re-Os) dating is used widely to infer Earth's evolution, but most samples are hydrated, with consequent mobility of Re, which is problematic for interpretation of isotope results. This project will solve this problem by determining the effects of hydration on Re and Os. Further, our knowledge of the mobility of Re and related elements will allow us to recognise rocks that once interacted with water, even after that water has gone, providing a tool to read the record of Earth's earliest oceans. Our new methods will enable Re-Os dating with clarity and confidence, with profound implications for understanding of Earth and extra-terrestrial planetary evolution.Read moreRead less