The conservative behavior of dissolved organic carbon in surface waters of the southern Chukchi Sea, Arctic Ocean, during early summer

The spatial distribution of dissolved organic carbon (DOC) concentrations and the optical properties of dissolved organic matter (DOM) determined by ultraviolet-visible absorbance and fluorescence spectroscopy were measured in surface waters of the southern Chukchi Sea, western Arctic Ocean, during...

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Bibliographic Details
Published in:Scientific reports 2016-09, Vol.6 (1), p.34123-34123, Article 34123
Main Authors: Tanaka, Kazuki, Takesue, Nobuyuki, Nishioka, Jun, Kondo, Yoshiko, Ooki, Atsushi, Kuma, Kenshi, Hirawake, Toru, Yamashita, Youhei
Format: Article
Language:English
Subjects:
704/47/4113
704/829/827
Absorbance
Dissolved organic carbon
Dissolved organic matter
Fluorescence spectroscopy
Humanities and Social Sciences
Ice
multidisciplinary
Optical properties
Principal components analysis
Science
Spatial distribution
Surface water
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Summary:The spatial distribution of dissolved organic carbon (DOC) concentrations and the optical properties of dissolved organic matter (DOM) determined by ultraviolet-visible absorbance and fluorescence spectroscopy were measured in surface waters of the southern Chukchi Sea, western Arctic Ocean, during the early summer of 2013. Neither the DOC concentration nor the optical parameters of the DOM correlated with salinity. Principal component analysis using the DOM optical parameters clearly separated the DOM sources. A significant linear relationship was evident between the DOC and the principal component score for specific water masses, indicating that a high DOC level was related to a terrigenous source, whereas a low DOC level was related to a marine source. Relationships between the DOC and the principal component scores of the surface waters of the southern Chukchi Sea implied that the major factor controlling the distribution of DOC concentrations was the mixing of plural water masses rather than local production and degradation.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep34123