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    Coordinated hydrological regimes in the Indo-Pacific region during the past two millennia

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    Article (399.9Kb)
    Data Set S1: Radiocarbon dates for cores 31MC and 34GGC. (326bytes)
    Data Set S2: 210Pb data for the top of multicore 31MC. (196bytes)
    Data Set S3: Compound-specific δ13C values for the C28, C30, and C32 fatty acids from the top six samples from core 31MC. (197bytes)
    Figure S1: Normalized δD data from the BJ8-3 cores for the C28, C30, and C32 n-acids. (507.0Kb)
    Additional file information (3.319Kb)
    Date
    2010-03-05
    Author
    Tierney, Jessica E.  Concept link
    Oppo, Delia W.  Concept link
    Rosenthal, Yair  Concept link
    Russell, James M.  Concept link
    Linsley, Braddock K.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/3863
    As published
    https://doi.org/10.1029/2009PA001871
    DOI
    10.1029/2009PA001871
    Keyword
     Tropical Pacific climate; Compound-specific hydrogen isotopes 
    Abstract
    Instrumental data suggest that major shifts in tropical Pacific atmospheric dynamics and hydrology have occurred within the past century, potentially in response to anthropogenic warming. To better understand these trends, we use the hydrogen isotopic ratios of terrestrial higher plant leaf waxes (δDwax) in marine sediments from southwest Sulawesi, Indonesia, to compile a detailed reconstruction of central Indo-Pacific Warm Pool (IPWP) hydrologic variability spanning most of the last two millennia. Our paleodata are highly correlated with a monsoon reconstruction from Southeast Asia, indicating that intervals of strong East Asian summer monsoon (EASM) activity are associated with a weaker Indonesian monsoon (IM). Furthermore, the centennial-scale oscillations in our data follow known changes in Northern Hemisphere climate (e.g., the Little Ice Age and Medieval Warm Period) implying a dynamic link between Northern Hemisphere temperatures and IPWP hydrology. The inverse relationship between the EASM and IM suggests that migrations of the Intertropical Convergence Zone and associated changes in monsoon strength caused synoptic hydrologic shifts in the IPWP throughout most of the past two millennia.
    Description
    Author Posting. © American Geophysical Union, 2010. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Paleoceanography 25 (2010): PA1102, doi:10.1029/2009PA001871.
    Collections
    • Geology and Geophysics (G&G)
    Suggested Citation
    Paleoceanography 25 (2010): PA1102
     

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