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    Air-sea gas transfer in a shallow, flowing and coastal environment estimated by dissolved inorganic carbon and dissolved oxygen analyses

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    J_Oceanogr_66_363a.pdf (702.7Kb)
    Date
    2010
    Author
    Abe, O.
    Watanabe, A.
    Sarma, V.V.S.S.
    Matsu, Y.
    Yamano, H.
    Yoshida, N.
    Saino, T.
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    Abstract
    We estimated gas exchange rates in Kabira Reef at Ishigaki Island, southwest Japan, using a mass balance calculation with dual ‘biological’ tracers: dissolved inorganic carbon (DIC) and dissolved oxygen (DO). The nighttime results allowed us to obtain reasonable gas transfer velocity kw values, all of which exceeded those obtained in wind-dominant studies. The difference is likely due to the contribution of turbulence generated by the interaction between the current and bottom topography. The k sub(w) obtained during high tides is consistent with that reported by Raymond and Cole (2001), whereas k sub(w) during low tides is significantly higher, which seems to be caused by enhanced friction with the bottom of the reef and/or bubble-induced gas transfer by wave breaking at the reef crest
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    http://drs.nio.org/drs/handle/2264/3599
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