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    Lateral organic carbon supply to the deep Canada Basin

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    2008GL034271.pdf (238.3Kb)
    Date
    2008-06-12
    Author
    Hwang, Jeomshik  Concept link
    Eglinton, Timothy I.  Concept link
    Krishfield, Richard A.  Concept link
    Manganini, Steven J.  Concept link
    Honjo, Susumu  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3363
    As published
    https://doi.org/10.1029/2008GL034271
    DOI
    10.1029/2008GL034271
    Keyword
     POC; Lateral transport; Canada Basin 
    Abstract
    Understanding the processes driving the carbon cycle in the Arctic Ocean is important for assessing the impacts of the predicted rapid and amplified climate change in this region. We analyzed settling particle samples intercepted by a time-series sediment trap deployed in the abyssal Canada Basin (at 3067 m) in order to examine carbon export to the deep Arctic Ocean. Strikingly old radiocarbon ages (apparent mean 14C age = ∼1900 years) of the organic carbon, abundant lithogenic material (∼80%), and mass flux variations temporally decoupled from the cycle of primary productivity in overlying surface waters together suggest that, unlike other ocean basins, the majority of the particulate organic carbon entering the deep Canada Basin is supplied from the surrounding margins.
    Description
    Author Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 35 (2008): L11607, doi:10.1029/2008GL034271.
    Collections
    • Physical Oceanography (PO)
    • Geology and Geophysics (G&G)
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Geophysical Research Letters 35 (2008): L11607
     

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