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Frank Dehairs’s multi-proxy team

Frank Dehairs’s multi-proxy team. Stéphanie Jacquet (ANCH) Marc Elskens (ANCH) Anne Julie Cavagna (ANCH) Damien Cardinal (MRAC , Tervuren). The Southern Ocean Water Mass Circulation and Biogeochemistry. The Southern Ocean. 18 % of the World Ocean, circumpolar distribution

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Frank Dehairs’s multi-proxy team

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  1. Frank Dehairs’s multi-proxy team • Stéphanie Jacquet (ANCH) • Marc Elskens (ANCH) • Anne Julie Cavagna (ANCH) • Damien Cardinal (MRAC , Tervuren) The Southern Ocean Water Mass Circulation and Biogeochemistry

  2. The Southern Ocean • 18 % of the World Ocean, circumpolar distribution • Active hydrological and ecological dynamics Key role in the global C cycle and climatic changes

  3. NO3-, NH4+, urea CO2 , HCO3- Si(OH)4 Multi-proxy approach to assess C export and mineralization Atmosphere CO2 15N, 13,14C, 30,32Si, algae biomarkers Surface layer 234Th F ratio, new production, Pk communities C Export production 100m Bad Mesopelagic Zone Baxs Water mass pathway + Better constrain the Baxs proxy C remineralization 1000m Deep water Bottom

  4. Master Thesis proposal 2006-2007 “ Dissolved barium to investigate the water mass pathways in the Southern Ocean and better constrain the Baxs proxy “ ANT XXII/3; Weddell sea Analysis of dissolved Barium in seawater and comparison of Ba results with the other physical and biogeochemical water mass properties. Analytical part: * Isotope dilution method * ICP-MS and HR-ICP-MS instruments (inductively coupled plasma mass spectrometry) * Optimization of the method on the HR-ICP-MS instrument

  5. If you’re interested in • Analytical chemistry & biogeochemistry • The southern Ocean • The global C cycle & climatic changes • If you’re interested in doing research • ... Fell free to contact us with any questions ! • Thank you 

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