OPERA
Type | Oceanographic cruise |
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Ship | Téthys II |
Ship owner | CNRS until 2019 - IFREMER since 2020 |
Dates | 22/01/2009 - 13/12/2009 |
Chief scientist(s) | LEFEVRE Dominique |
INSTITUT MÉDITERRANÉEN D'OCÉANOLOGIE - UMR 7294 UMR IRD 235 - MARSEILLE 163 avenue de Luminy Bâtiment Méditerranée 13288 Marseille Cedex 9 +33(0)4 86 09 05 00 https://www.mio.osupytheas.fr/fr/linstitut-mediterraneen-doceanologie/presentation-2/ |
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DOI | 10.17600/9450020 |
Objective | The objective of this project was to finance yearly monitoring of the biogeochemical properties in the water column on the ANTARES site over the year 2009 (3-day mission per month). During programmes which have either been completed or are underway, the requesting team obtained financing and collaboration for the technological development of a pressurized sampling bottle (IODA6000: In situ Oxygen Dynamic Autosampler), positioned equipment on existing mooring lines and acquired new instruments to deploy new mooring lines. During operations at sea, studying the speed of remineralization between major compartments (epi-, meso- and bathypelagic) in the water column, in relation with the hydrological regime and some key water column parameters like stocks, diversity and organic matter. - Fluxes of photosynthesis production in the mixing layer associated with remineralization fluxes providing the net community production flux, to quantify the intensity of the biological pump. - the speed of organic matter mineralization in intermediate and deep water; based on complementary methodology to measure oxygen dynamics (ETS activity, IODA6000) using different and complementary sampling methods (Niskin, in situ, PDS, pressurized water sampler, IODA6000) - Structural dynamics (biodiversity) of prokaryotic communities; - The originality of the project, along with the coupling to the water column, is the seasonal monitoring study of the speed of organic matter's remineraliztion. This falls under the OPERA project. |