Oceanic evidence of climate change in southern Australia over the last three centuries
Citable URI
https://hdl.handle.net/1912/3300As published
https://doi.org/10.1029/2003GL018869DOI
10.1029/2003GL018869Keyword
Coral age validation; Australia; Coral chemistry; Southern Ocean; Sub-tropical ridge; Climate proxyAbstract
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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Suggested Citation
Article: Thresher, Ronald E., Rintoul, Stephen R., Koslow, J. Anthony, Weidman, Christopher R., Adkins, Jess F., Proctor, Craig, "Oceanic evidence of climate change in southern Australia over the last three centuries", Geophysical Research Letters 31 (2004): L07212, DOI:10.1029/2003GL018869, https://hdl.handle.net/1912/3300Related items
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