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AWI Geotraces Activities

AWI Geotraces Activities. Topical focus: Cycling of natural radionuclides in a changing Ocean (U series isotopes, REE) Regional focus: High latitudes in the Artic and Antarctic …but we are open to activities in more temperate regions. Past and present activities.

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AWI Geotraces Activities

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  1. AWI Geotraces Activities Topical focus: Cycling of natural radionuclides in a changing Ocean (U series isotopes, REE) Regional focus: High latitudes in the Artic and Antarctic …but we are open to activities in more temperate regions

  2. Past and present activities • Oct/Nov 2005: intercalibration cruise Bremerhaven – Cape Town (RV Polarstern ANT XXIII-1) • Jan/Feb 2006: Drake Passage cruise (RV Polarstern ANT XXIII-3) • July-Oct 2007: Central Arctic Ocean (RV Polarstern (ARK XXII-2; IPY EOI #045, EU-FP6 Damocles)

  3. ZERO and DRAKE expedition 2008RV Polarstern ANT XXIV-3(PI‘s M. Rutgers van der Loeff, Hein de Baar, E. Fahrbach) high-resolution distribution of Th isotopes, 231Pa and 227Ac along the Zero Meridian and in the Drake Passage !!! PhD position available !!! • particle dynamics (aggregation, disaggregation and particle sinking rates) and terrigenous input (Th isotopes and 231Pa) • water mass ventilation and upwelling (derived from 230Th/ 231Pa and 227Ac distributions) plus hydrographic data

  4. Zero & Drake cont. • Importance of marine polysaccharides for radionuclide cycling (210Po, 234Th –TEP interaction) • 234Th as tracer of export production of POC

  5. Meteor 2009, Barbados - Las Palmas (PI W. Balzer) Productivity and dust gradient across ITCZ / tracing the far-field Amazon signal • high-resolution distribution of 232Th, 230Th, 234Th 231Pa, REE • 210Po, 210Pb, 234Th – POM/DOM interaction

  6. Future cruises in high latitudes For 2011 and onwards Submit shiptime proposals for RV Polarstern now! Contact Michiel Rutgers van der Loeff or Eberhard Fahrbach

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