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Datasets of project "Origin and Fate of Biogenic Particle Fluxes in the Ocean"

Mostrando recursos 1 - 20 de 3.971

  1. Nutrients measured on water bottle samples at time series station KERFIX in 1995

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  2. Nutrients measured on water bottle samples at time series station KERFIX in 1994

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  3. Nutrients measured on water bottle samples at time series station KERFIX in 1993

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  4. Nutrients measured on water bottle samples at time series station KERFIX in 1992

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  5. Nutrients measured on water bottle samples at time series station KERFIX in 1991

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  6. Nutrients measured on water bottle samples at time series station KERFIX in 1990

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul

  7. A review of Si particle fluxes in the modern ocean

    Ragueneau, Olivier; Tréguer, Paul; Leynaert, Aude; Anderson, Robert F; Brzezinski, Mark A; DeMaster, David J; Dugdale, Richard; Dymond, Jack R; Fischer, Gerhard; Francois, Roger; Heinze, Christoph; Maier-Reimer, Ernst; Martin-Jézéquel, Véronique; Nelson, David M; Quéguiner, Bernard
    Due to the major role played by diatoms in the biological pump of CO2, and to the presence of silica-rich sediments in areas that play a major role in air-sea CO2 exchange (e.g. the Southern Ocean and the Equatorial Pacific), opal has a strong potential as a proxy for paleoproductivity reconstructions. However, because of spatial variations in the biogenic silica preservation, and in the degree of coupling between the marine Si and C biogeochemical cycles, paleoreconstructions are not straitghtforward. A better calibration of this proxy in the modern ocean is required, which needs a good understanding of the mechanisms that...

  8. Integrated Data Sets of the EU FP5 Research Project ORFOIS: Origin and fate of biogenic particle fluxes in the ocean and their interactions with atmospheric CO2 concentrations as well as the marine sediment

    Dittert, Nicolas; Bakker, Dorothee C E; Bendtsen, Jorgen; Corrin, Lydie; Gehlen, Marion; Heinze, Christoph; Maier-Reimer, Ernst; Michalopoulos, Panagiotis; Soetaert, Karline; Tol, Richard S J
    For a reliable simulation of the time and space dependent CO2 redistribution between ocean and atmosphere an appropriate time dependent simulation of particle dynamics processes is essential but has not been carried out so far. The major difficulties were the lack of suitable modules for particle dynamics and early diagenesis (in order to close the carbon and nutrient budget) in ocean general circulation models, and the lack of an understanding of biogeochemical processes, such as the partial dissolution of calcareous particles in oversaturated water. The main target of ORFOIS was to fill in this gap in our knowledge and prediction capability...

  9. Nutrients at time series station KERFIX

    Jeandel, Catherine; Ruiz-Pino, Diana; Gjata, Elvis; Poisson, Alain; Brunet, Christian; Charriaud, Edwige; Dehairs, Frank; Delille, Daniel; Fiala, Michel; Fravalo, Charles; Miquel, Juan-Carlos; Park, Young-Hyang; Pondaven, Philippe; Quéguiner, Bernard; Razouls, Suzanne; Shauer, Bernard; Tréguer, Paul
    Between January 1990 and March 1995, the research project KERFIX undertook the first regular noncoastal multiyear acquisition of parameters related to the carbon cycle in the Southern Ocean at a time series station located at 50°40' S-68°25' E, 60 miles southwest of the Kerguelen Islands. The objectives of KERFIX are (1) to monitor the ocean/atmosphere CO2 and O2 exchanges and to understand which processes govern these exchanges (2) to observe and interpret the seasonal and interannual variability of the production, flux, decomposition and dissolution of carbon and associated elements at this location. In addition, micropaleontological studies describe the present and...

  10. Oxygen microprofiles and porewater chemistry in sediments of the Skagerrak

    Bakker, Joop F; Helder, Wim
    Sediment porewater oxygen profiles were measured with micro and needle electrodes in sediment cores of 27 stations in the Skagerrak (northeastern North Sea). Oxygen penetration depth ranged from 3 to 20 mm depth. Fluxes estimated from the oxygen gradients varied from 3 to 18 mmol m**-2 d**-1. Oxygen penetration and flux depend on water depth, but possibly more on the hydrological conditions, related to the import of fresh organic matter by primary production in the water column. Oxygen fluxes were not related to the total organic carbon (TOC) content of the sediments. Stations in the eastern part of the Skagerrak...

  11. Benthic oxygen flixes on the Washington shelf and slope

    Archer, David E; Devol, Alan H
    Benthic oxygen fluxes calculated from in situ microelectrode profiles arc compared with benthic flux chamber O2 uptake measurements on a transect of eight stations across the continental shelf and three stations on the slope of Washington State. Station depths ranged from 40 to 630 m and bottom-water oxygen concentrations were 127-38 µM. The fluxes measured by the two methods were similar on the slope, but on the shelf, the chamber flux exceeded the microelectrode flux by as much as a factor of 3-4. We attribute this difference to pore-water irrigation, a process which apparently accounts for the oxidation of a...

  12. Chemistry of pore water from Arctic sediments

    Hulth, Stefan; Hall, Per; Blackburn, T H; Landén, A
    Pore water and solid phase distributions of C, N, P and Si in sediments of the Arctic Ocean (Svalbard area) have been investigated. Concentrations of organic carbon (Corg) in the solid phase of the sediment varied from 1.3 to 2.8% (mean 1.9%), with highest concentrations found at shallow stations south/southwest of Svalbard. Relatively low concentrations were obtained at the deeper stations north/northeast of Svalbard. Atomic carbon to nitrogen ratios in the surface sediment ranged from below 8 to above 10. For some stations, high C/N ratios together with high concentrations of Corg suggest that sedimentary organic matter is mainly of...

  13. Current measurements under the Gulf Stream at Station TRI98-CG

    Richardson, Philip L

  14. Current measurements under the Gulf Stream at Station TRI98-20

    Richardson, Philip L

  15. Current measurements under the Gulf Stream at Station TRI98-19

    Richardson, Philip L

  16. Current measurements under the Gulf Stream at Station TRI98-18

    Richardson, Philip L

  17. Current measurements under the Gulf Stream at Station TRI98-17

    Richardson, Philip L

  18. Current measurements under the Gulf Stream at Station TRI98-16

    Richardson, Philip L

  19. Current measurements under the Gulf Stream at Station TRI98-15

    Richardson, Philip L

  20. Current measurements under the Gulf Stream at Station TRI98-14

    Richardson, Philip L

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