• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    The role of sea ice formation in cycling of aluminium in northern Marguerite Bay, Antarctica

    Thumbnail
    View/Open
    hendry-manuscript-revision_with_figs.pdf (1.114Mb)
    Date
    2009-11-17
    Author
    Hendry, Katharine R.  Concept link
    Meredith, Michael P.  Concept link
    Measures, Christopher I.  Concept link
    Carson, Damien S.  Concept link
    Rickaby, Rosalind E. M.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/3232
    As published
    https://doi.org/10.1016/j.ecss.2009.12.017
    Keyword
     Biogeochemistry; Nutrients (mineral); Trace metals; Brines; Antarctica 
    Abstract
    The use of dissolved Al as a tracer for oceanic water masses and atmospheric dust deposition of biologically important elements, such as iron, requires the quantitative assessment of its sources and sinks in seawater. Here, we address the relative importance of oceanic versus atmospheric inputs of Al, and the relationship with nutrient cycling, in a region of high biological productivity in coastal Antarctica. We investigate the concentrations of dissolved Al in seawater, sea ice, meteoric water and sediments collected from northern Marguerite Bay, off the West Antarctic Peninsula, from 2005-2006. Dissolved Al concentrations at 15 m water depth varied between 2 and 27 nM, showing a peak between two phytoplankton blooms. We find that, in this coastal setting, upwelling and incorporation of waters from below the surface mixed layer are responsible for this peak in dissolved Al as well as renewal of nutrients. This means that changes in the intensity and frequency of upwelling events may result in changes in biological production and carbon uptake. The waters below the mixed layer are most likely enriched in Al as a result of sea ice formation, either causing the injection of Al-rich brines or the resuspension of sediments and entrainment of pore fluids by brine cascades. Glacial, snow and sea ice melt contributes secondarily to the supply of Al to surface waters. Total particulate Al ranges from 93 to 2057 μg/g, and increases with meteoric water input towards the end of the summer, indicating glacial runoff is an important source of particulate Al. The (Al/Si)opal of sediment core top material is considerably higher than water column opal collected by sediment traps, indicative of a diagenetic overprint and incorporation of Al at the sediment-water interface. Opal that remains buried in the sediment could represent a significant sink of Al from seawater.
    Description
    Author Posting. © The Author(s), 2009. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Estuarine, Coastal and Shelf Science 87 (2010): 103-112, doi:10.1016/j.ecss.2009.12.017.
    Collections
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Preprint: Hendry, Katharine R., Meredith, Michael P., Measures, Christopher I., Carson, Damien S., Rickaby, Rosalind E. M., "The role of sea ice formation in cycling of aluminium in northern Marguerite Bay, Antarctica", 2009-11-17, https://doi.org/10.1016/j.ecss.2009.12.017, https://hdl.handle.net/1912/3232
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Constraining the recent mass balance of Pine Island and Thwaites glaciers, West Antarctica, with airborne observations of snow accumulation 

      Medley, Brooke; Joughin, Ian; Smith, B. E.; Das, Sarah B.; Steig, Eric J.; Conway, Howard; Gogineni, S.; Lewis, Cameron; Criscitiello, Alison S.; McConnell, Joseph R.; van den Broeke, Michiel R.; Lenaerts, Jan T. M.; Bromwich, D. H.; Nicolas, J. P.; Leuschen, C. (Copernicus Publications on behalf of the European Geosciences Union, 2014-07-31)
      In Antarctica, uncertainties in mass input and output translate directly into uncertainty in glacier mass balance and thus in sea level impact. While remotely sensed observations of ice velocity and thickness over the major ...
    • Thumbnail

      A new Holocene eruptive history of Erebus volcano, Antarctica using cosmogenic 3He and 36Cl exposure ages 

      Parmelee, David E. F.; Kyle, Philip R.; Kurz, Mark D.; Marrero, Shasta M.; Phillips, Fred M. (Elsevier, 2015-09-05)
      The ages of recent effusive eruptions on Erebus volcano, Antarctica are poorly known. Published 40Ar/39Ar ages of the 10 youngest “post-caldera” lava flows are unreliable because of the young ages of the flows (<10 ka) and ...
    • Thumbnail

      Colony formation in Phaeocystis antarctica : connecting molecular mechanisms with iron biogeochemistry 

      Bender, Sara J.; Moran, Dawn M.; McIlvin, Matthew R.; Zheng, Hong; McCrow, John P.; Badger, Jonathan; DiTullio, Giacomo R.; Allen, Andrew E.; Saito, Mak A. (Copernicus Publications on behalf of the European Geosciences Union, 2018-08-21)
      Phaeocystis antarctica is an important phytoplankter of the Ross Sea where it dominates the early season bloom after sea ice retreat and is a major contributor to carbon export. The factors that influence Phaeocystis colony ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo