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
Main Authors: Tanaka, Kazuki, Takesue, Nobuyuki, Nishioka, Jun, Kondo, Yoshiko, Ooki, Atsushi, Kuma, Kenshi, Hirawake, Toru, Yamashita, Youhei
Format: Text
Language:English
Published: Nature Publishing Group 2016
Subjects:
Article
Arctic
Arctic Ocean
Chukchi Sea
Chukchi
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5034254/
http://www.ncbi.nlm.nih.gov/pubmed/27658444
https://doi.org/10.1038/srep34123
Description
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.

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