Distribution and Fluxes of Calcium Carbonatealong the Continental Margin in the Gulf of Biscay
  • 【DOI】

    10.1023/A:1009640432692

  • 【摘要】

    Compositions of major components in suspended matter,collected by centrifugation, in situ pumping andsediment traps, in the Gulf of Biscay during the OMEXproject were determined and compared. The resu... 展开>>Compositions of major components in suspended matter,collected by centrifugation, in situ pumping andsediment traps, in the Gulf of Biscay during the OMEXproject were determined and compared. The resultsshow a strong and rapid decrease in the concentrationof biogenic fraction in the upper 200 m of the watercolumn which may be attributed to the preferentialremoval of this component due to the production offaecal pellets and to the formation of marine snow. Concurrent decrease with depth of the organic andinorganic carbon contents demonstrate the importanceof the respiration of organic matter and thedissolution of calcium carbonate in the oceanic carboncycling. Lithogenic and carbonate fluxes across thecontinental slope in the Goban Spur area wereevaluated based on sediment trap records. The rate ofproduction of calcium carbonate in the surface waters(100 g CaCO3 m-2y-1), deduced from theprimary production measurements, is much largercompared to the fluxes of this component observed inth 收起<<

  • 【作者】

  • 【刊期】

    Aquatic Geochemistry 1998年3-4期

  • 【语种】

    eng