Deep Atlantic’s role in millennial atmospheric carbon dioxide changes. This project aims to fill in a critical knowledge gap in global carbon cycle research, by generating the first high-resolution deep Atlantic carbonate ion and nutrient records for the last 150,000 years. The project will derive air-sea carbon dioxide (CO2) exchange signals, which permit straightforward evaluation of the deep Atlantic’s role in millennial atmospheric CO2 changes under various climate conditions. The intended o ....Deep Atlantic’s role in millennial atmospheric carbon dioxide changes. This project aims to fill in a critical knowledge gap in global carbon cycle research, by generating the first high-resolution deep Atlantic carbonate ion and nutrient records for the last 150,000 years. The project will derive air-sea carbon dioxide (CO2) exchange signals, which permit straightforward evaluation of the deep Atlantic’s role in millennial atmospheric CO2 changes under various climate conditions. The intended outcome of this project is to substantially improve our understanding of the mechanisms that govern the global carbon cycle. This should provide significant benefits including the assessment of models used to predict future global warming due to anthropogenic CO2.Read moreRead less
How do sediments become magnetised? Construction of an empirical-numerical framework. The magnetism of sediments provides information on the past behaviour of the Earth's magnetic field. This project will study sediments from the oceans around Australia to understand how the field was recorded and use this information to construct a new generation of computer models that will provide insights into the physics of the recording process.
Unravelling vanadium biogeochemistry in modern marine sediments. This project aims to unravel the biogeochemistry of vanadium in modern marine sediments for use as a tracer of ancient oxygen concentrations in the oceans of the early Earth. This project will generate fundamental knowledge on the behaviour of vanadium in modern marine sediments by applying advanced analytical tools for imaging its concentration and chemical form at ultra-high resolution. This information is critical for accurate i ....Unravelling vanadium biogeochemistry in modern marine sediments. This project aims to unravel the biogeochemistry of vanadium in modern marine sediments for use as a tracer of ancient oxygen concentrations in the oceans of the early Earth. This project will generate fundamental knowledge on the behaviour of vanadium in modern marine sediments by applying advanced analytical tools for imaging its concentration and chemical form at ultra-high resolution. This information is critical for accurate interpretation of the geological record to infer the oxygen concentration of the oceans at various points in Earth's history. This interdisciplinary project will facilitate strong collaboration between Australian and Danish researchers in the field of marine geochemistry and paleoceanography.Read moreRead less
Australian dust: its response to, and role in, climate change. Atmospheric dust plumes can affect global climate, but the impact of Australian dust on climate is poorly known even though it is a major dust source. This project will study the magnetism of dust deposits in marine sediments to understand how Australian dust influences climate in order to better predict the influence of humans on future climate.
Mid-depth Atlantic circulation during the Last Glacial Maximum and deglaciation. The history of ocean circulation at the intermediate water depth remains controversial, limiting our understanding of the interplay of ocean circulation, climate changes, and the global carbon cycle. This project aims to generate trace elemental and isotopic records for 10 key locations in the Atlantic Ocean, which constrain physicochemical properties of water masses at unprecedented temporal resolution during the l ....Mid-depth Atlantic circulation during the Last Glacial Maximum and deglaciation. The history of ocean circulation at the intermediate water depth remains controversial, limiting our understanding of the interplay of ocean circulation, climate changes, and the global carbon cycle. This project aims to generate trace elemental and isotopic records for 10 key locations in the Atlantic Ocean, which constrain physicochemical properties of water masses at unprecedented temporal resolution during the last glacial maximum and the subsequent deglaciation. This multi-proxy approach will reconcile controversy and pin down the evolution of mid-depth Atlantic circulation in the past, and thereby substantially improve our understanding of the climate system.Read moreRead less