Climate Change and Earth-Ocean Atmosphere Systems
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Current research includes:
- Calibrations of astronomical forcing of climate change records in oceanic sediments
- Multi-proxy studies of abrupt climate change in the oceans
- Sedimentological and geochemical tracers of past deep sea circulation vigour and sediment supply
- Use of foraminiferal metal chemistry and the stable isotopic composition of biogenic sediments in palaeochemical studies of ocean temperature and nutrient variations
- Processes and geochemical fluxes associated with earth-atmosphere interaction in chemical weathering
- Isotopic studies of siliceous and calcareous microfossils for palaeoproductivity and environmental variations
- Biogeochemical cycling of stable isotopes and elements in marine and terrestrial systems
We are also interested in supervising research students in the general fields of seawater and sediment geochemistry particularly using isotope geochemistry to understand water and chemical budgets of the oceans, particularly in linking understanding of the chemistry of the modern rivers and oceans to weathering history and palaeoceanography. Studies of modern sedimentation also provide a link to understanding past ocean dynamics.
We have well equipped laboratories with a multi-collector ICP mass-spectrometer, three solid-source and four gas-source mass spectrometers, atomic-emission spectrometer, ICP-MS, C-H-N analyzer, atomic absorption, Sedigraph, A coulter counter, magnetic susceptibility, X-radiography, cathodoluminescence. Thus, we offer topics which incorporate training in geochemical and sedimentological techniques, into research on major current problems in global change and global biogeochemical cycles.