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dc.contributor.authorMisumi, Kazuhiro  Concept link
dc.contributor.authorTsumune, Daisuke  Concept link
dc.contributor.authorYoshida, Yoshikatsu  Concept link
dc.contributor.authorUchimoto, K.  Concept link
dc.contributor.authorNakamura, T.  Concept link
dc.contributor.authorNishioka, Jun  Concept link
dc.contributor.authorMitsudera, Humio  Concept link
dc.contributor.authorBryan, Frank O.  Concept link
dc.contributor.authorLindsay, Keith  Concept link
dc.contributor.authorMoore, J. Keith  Concept link
dc.contributor.authorDoney, Scott C.  Concept link
dc.date.accessioned2011-08-09T14:16:11Z
dc.date.available2012-01-22T09:30:57Z
dc.date.issued2011-07-22
dc.identifier.citationJournal of Geophysical Research 116 (2011): G03005en_US
dc.identifier.urihttps://hdl.handle.net/1912/4746
dc.descriptionAuthor Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 116 (2011): G03005, doi:10.1029/2010JG001541.en_US
dc.description.abstractMechanisms controlling the dissolved iron distribution in the North Pacific are investigated using the Biogeochemical Elemental Cycling (BEC) model with a resolution of approximately 1° in latitude and longitude and 60 vertical levels. The model is able to reproduce the general distribution of iron as revealed in available field data: surface concentrations are generally below 0.2 nM; concentrations increase with depth; and values in the lower pycnocline are especially high in the northwestern Pacific and off the coast of California. Sensitivity experiments changing scavenging regimes and external iron sources indicate that lateral transport of sedimentary iron from continental margins into the open ocean causes the high concentrations in these regions. This offshore penetration only appears under a scavenging regime where iron has a relatively long residence time at high concentrations, namely, the order of years. Sedimentary iron is intensively supplied around continental margins, resulting in locally high concentrations; the residence time with respect to scavenging determines the horizontal scale of elevated iron concentrations. Budget analysis for iron reveals the processes by which sedimentary iron is transported to the open ocean. Horizontal mixing transports sedimentary iron from the boundary into alongshore currents, which then carry high iron concentrations into the open ocean in regions where the alongshore currents separate from the coast, most prominently in the northwestern Pacific and off of California.en_US
dc.description.sponsorshipThis work was supported by the U.S. National Science Foundation (EF‐0424599).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2010JG001541
dc.subjectPacificen_US
dc.subjectIronen_US
dc.subjectModelingen_US
dc.titleMechanisms controlling dissolved iron distribution in the North Pacific : a model studyen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2010JG001541


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