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    A marine reservoir correction for the Houtman-Abrolhos Archipelago, East Indian Ocean, Western Australia

    195915_96735_A_Marine_Reservoir_Correction_for_the_Houtman-Abrolhos_Archipelago__East_Indian_Ocean__WA.pdf (429.3Kb)
    Access Status
    Open access
    Authors
    Squire, Peter
    Joannes-Boyau, Renaud
    Scheffers, Anja
    Nothdurft, Luke
    Hua, Quan
    Collins, Lindsay
    Scheffers, Sander
    Zhao, Jian-Xin
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Squire, Peter and Joannes-Boyau, Renaud and Scheffers, Anja and Nothdurft, Luke and Hua, Quan and Collins, Lindsay and Scheffers, Sander and Zhao, Jian-Xin. 2013. A marine reservoir correction for the Houtman-Abrolhos Archipelago, East Indian Ocean, Western Australia. Radiocarbon. 55 (1): pp. 103-114.
    Source Title
    Radiocarbon: an international journal of cosmogenic isotope research
    DOI
    10.2458/azu_js_rc.v55i1.16197
    ISSN
    0033-8222
    Remarks

    This article is published under the Open Access publishing model and distributed under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/ Please refer to the licence to obtain terms for any further reuse or distribution of this work.

    URI
    http://hdl.handle.net/20.500.11937/42975
    Collection
    • Curtin Research Publications
    Abstract

    High-precision analysis using accelerator mass spectrometry (AMS) was performed upon known-age Holocene and modern, pre-bomb coral samples to generate a marine reservoir age correction value (ΔR) for the Houtman-Abrolhos Archipelago (28.7°S, 113.8°E) off the Western Australian coast. The mean ΔR value calculated for the Abrolhos Islands, 54 ± 30 yr (1σ) agrees well with regional ΔR values for Leeuwin Current source waters (N-NW Australia-Java) of 60 ± 38 yr. The Abrolhos Islands show little variation with ΔR values of the northwestern and north Australian coast, underlining the dominance of the more equilibrated western Pacific-derived waters of the Leeuwin Current over local upwelling. The Abrolhos Islands ΔR values have remained stable over the last 2896 cal yr BP, being also attributed to the Leeuwin Current and the El Niño Southern Oscillation (ENSO) signal during this period. Expected future trends will be a strengthening of the teleconnection of the Abrolhos Islands to the climatic patterns of the equatorial Pacific via enhanced ENSO and global warming activity strengthening the Leeuwin Current. The possible effect upon the trend of future ΔR values may be to maintain similar values and an increase in stability. However, warming trends of global climate change may cause increasing dissimilarity of ΔR values due to the effects of increasing heat stress upon lower-latitude coral communities.

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