Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep34123
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Funding
- Green Network of Excellence Program (GRENE Program)
- Arctic Challenge for Sustainability (ArCS) Project
- Grant-in-Aid for Scientific Research on Innovative Areas
- New Ocean Paradigm on Its Biogeochemistry, Ecosystem and Sustainable Use [24121003, 25121501]
- Grant for Joint Research Program of the Institute of Low Temperature Science, Hokkaido University
- Grants-in-Aid for Scientific Research [16H01592, 24121003, 15H05820] Funding Source: KAKEN
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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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