SWINGS
Type | Oceanographic cruise |
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Ship | Marion Dufresne |
Ship owner | TAAF |
Dates | 13/01/2021 - 08/03/2021 |
Chief scientist(s) | JEANDEL Catherine ![]() ![]() |
LABORATOIRE D'ETUDES EN GÉOPHYSIQUE ET OCÉANOGRAPHIE SPATIALES - UMR 5566 14 avenue Edouard Belin 31400 Toulouse +33 (0)5 61 33 47 13 |
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DOI | 10.17600/18001925 |
Objective | The ocean's ability to absorb carbon dioxide depends on its chemical status and biological health. One of the major and expected consequences of climate change is to modify, in addition to stratification (and therefore light penetration), the nutrient inputs to the ocean, chemical speciation and the ability of biological species to assimilate them. These changes will be particularly pronounced in the Southern Ocean (IPCC, 2014). The term "nutrients" today systematically includes trace elements such as Fe, Zn, Cu, Cd, Co, Ni that are all involved as coenzymes in cellular processes. These elements thus play a major role in the ocean but are present at very low concentrations. Studying their cycles has direct implications for many scientific studies, such as the carbon cycle, climate change, ocean ecosystems, and environmental contamination. The very recent advances in analytical techniques have allowed us to make substantial improvement in understanding the important properties of trace elements in the ocean. In addition, other trace elements are recognized tracers of processes such as the origin and transformation of matter (and / or water bodies) or the dynamics of marine particles. Others are notorious contaminants (eg Hg, Pb). The SWINGS project is based on an oceanographic section in the southern sector of the southwest Indian Ocean. This region is particularly crucial because it plays a major role in climate control and is highly sensitive to the global changes and still little explored due to its remoteness. Carrying out the 54-day SWINGS campaign in the South West Indian Ocean, which is essentially southern, will allow us to:
Sampling equipment, analyses on board and on shore, and the associated modelling effort are based on state-of-the-art technologies. The originality of this project lies in its interdisciplinarity, which will involve geologists, physicists, chemists and biologists. Observations will feed high-resolution models developed for these regions. SWINGS is supported by an important network of international collaborations with colleagues from South Africa (UCT, CSIR, Stellenbosh), Germany (MPI), Belgium (ULB), Switzerland (ETH) and USA (WHOI, FSU, University of Washington, FIU, Duke University), SWINGS will be the 3rd French contribution to the international GEOTRACES program and fulfills the objectives of the SOLAS, IMBER and INTERRIDGE programs. |