• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Geology and Geophysics (G&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

    Rise in frequency of surface melting at Siple Dome through the Holocene : evidence for increasing marine influence on the climate of West Antarctica

    Thumbnail
    View/Open
    2007JD008790.pdf (606.9Kb)
    Date
    2008-01-29
    Author
    Das, Sarah B.  Concept link
    Alley, Richard B.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/3544
    As published
    https://doi.org/10.1029/2007JD008790
    DOI
    10.1029/2007JD008790
    Keyword
     Siple Dome; Melt layer record; Antarctica Holocene climate 
    Abstract
    A new melt layer history from Siple Dome, West Antarctica, indicates notable late-Holocene summertime warming. Visual stratigraphic analyses of the 1004-m ice core identified 62 years with melt layers. Melting events began around 11.7 ka, followed by a period of no melting from 8.8–6.6 ka. Melt layer frequency increased from 6.6 ka to the present, with the 1000-year-average melt layer frequency reaching a maximum of 2% at 0.8 ka. We use our millennial-scale archive of melt events as a unique seasonal paleothermometer to elucidate changes in West Antarctic Holocene summer climate. Our calibration suggests the change in melt frequency from 0% to 2% may represent a summer temperature increase of ≥2°C from the middle to late Holocene. This temperature change cannot be explained entirely by local change in ice elevation or summer insolation and is in contrast to East Antarctic climate records, which show peak warmth in the early Holocene followed by stable or decreasing temperature. We interpret the rise in melt frequency as evidence of an increasing marine influence on the Ross Sea sector of West Antarctica. Although the surface elevation of Siple Dome has not changed greatly, the continued lateral retreat of the West Antarctic ice sheet from its Last Glacial Maximum configuration (across the outer continental shelf), and the delayed drawdown in ice thickness from the adjacent coastal Marie Byrd Land region, in conjunction with periods of increased cyclogenesis, perhaps related to variations in ENSO, would allow a moderated maritime climate to more easily reach West Antarctica.
    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 Journal of Geophysical Research 113 (2008): D02112, doi:10.1029/2007JD008790.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Journal of Geophysical Research 113 (2008): D02112
     

    Related items

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

    • Thumbnail

      Holocene black carbon in Antarctica paralleled Southern Hemisphere climate 

      Arienzo, Monica; McConnell, Joseph R.; Murphy, Lisa N.; Chellman, Nathan; Das, Sarah B.; Kipfstuhl, Sepp; Mulvaney, Robert (John Wiley & Sons, 2017-07-01)
      Black carbon (BC) and other biomass-burning (BB) aerosols are critical components of climate forcing, but quantification, predictive climate modeling, and policy decisions have been hampered by limited understanding of the ...
    • 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

      Rapid sulfurisation of highly branched isoprenoid (HBI) alkenes in sulfidic Holocene sediments from Ellis Fjord, Antarctica 

      Sinninghe Damste, Jaap S.; Rijpstra, W. Irene C.; Coolen, Marco J. L.; Schouten, Stefan; Volkman, John K. (2006-04-03)
      Samples of particulate organic matter from the water column and anoxic Holocene sediment layers from the Small Meromictic Basin (SMB) in Ellis Fjord (eastern Antarctica) were analyzed to study the early incorporation of ...
    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