The Silica Balance in the World Ocean: A Reestimate

DOI Web Site 被引用文献32件
  • Paul Tréguer
    Unité de Recherches Associée, CNRS 1513, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, BP 809, F-29285 Brest Cedex, France
  • David M. Nelson
    College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331-5503, USA.
  • Aleido J. Van Bennekom
    Department of Marine Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695-8208, USA.
  • David J. DeMaster
    Netherlands Institute for Sea Research (NIOZ), 1790 AB Den Burg, TEXEL, the Netherlands
  • Aude Leynaert
    Unité de Recherches Associée, CNRS 1513, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, BP 809, F-29285 Brest Cedex, France
  • Bernard Quéguiner
    Unité de Recherches Associée, CNRS 1513, Institut Universitaire Européen de la Mer, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, BP 809, F-29285 Brest Cedex, France

書誌事項

公開日
1995-04-21
DOI
  • 10.1126/science.268.5209.375
公開者
American Association for the Advancement of Science (AAAS)

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説明

<jats:p> The net inputs of silicic acid (dissolved silica) to the world ocean have been revised to 6.1 ± 2.0 teramoles of silicon per year (1 teramole = 10 <jats:sup>12</jats:sup> moles). The major contribution (about 80 percent) comes from rivers, whose world average silicic acid concentration is 150 micromolar. These inputs are reasonably balanced by the net ouputs of biogenic silica of 7.1 ± 1.8 teramoles of silicon per year in modern marine sediments. The gross production of biogenic silica (the transformation of dissolved silicate to particulate skeletal material) in surface waters was estimated to be 240 ± 40 teramoles of silicon per year, and the preservation ratio (opal accumulation in sediment/gross production in surface waters) averages 3 percent. In the world ocean the residence time of silicon, relative to total biological uptake in surface waters, is about 400 years. </jats:p>

収録刊行物

  • Science

    Science 268 (5209), 375-379, 1995-04-21

    American Association for the Advancement of Science (AAAS)

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