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    Oceanic evidence of climate change in southern Australia over the last three centuries

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    2003GL018869.pdf (169.1Kb)
    Date
    2004-04-13
    Author
    Thresher, Ronald E.  Concept link
    Rintoul, Stephen R.  Concept link
    Koslow, J. Anthony  Concept link
    Weidman, Christopher R.  Concept link
    Adkins, Jess F.  Concept link
    Proctor, Craig  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3300
    As published
    https://doi.org/10.1029/2003GL018869
    DOI
    10.1029/2003GL018869
    Keyword
     Coral age validation; Australia; Coral chemistry; Southern Ocean; Sub-tropical ridge; Climate proxy 
    Abstract
    Chemical analysis of deepwater octocorals collected at 1000 m depth off southern Australia indicates long-term cooling, beginning in the mid-18th century. This cooling appears to reflect shoaling of isotherms along the continental shelf, that can be related statistically, observationally and by modeling to increasing coastal sea-surface temperatures, that in turn reflect a poleward extension of the SW Pacific boundary current (the East Australian Current). The oceanographic changes implied by the coral record suggest climate change in temperate Australia starting about the time of European settlement. Correlations between temperate Australian and Antarctic indices suggest these long-term changes might also be relevant to Antarctic climate.
    Description
    Author Posting. © American Geophysical Union, 2004. 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 31 (2004): L07212, doi:10.1029/2003GL018869.
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    • Geology and Geophysics (G&G)
    Suggested Citation
    Geophysical Research Letters 31 (2004): L07212
     

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