古水温変動からみた北太平洋の軌道強制力に対する応答(<特集>後期新生代の環境指標としての微古生物学と古海洋学の進展)  [in Japanese] Response of the North Pacific to orbital forcing during late Quaternary from the view of paleotemperature records(Progress in micropaleontology and paleoceanography as the late Cenozoic environmental tracers)  [in Japanese]

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Author(s)

Abstract

We present a palaeoceanographic perspective of the North Pacific during the last two glacial cycles based on U^<K'>_<37>-derived palaeotemperature records from Japan and California margins. At the Japan margin, the sea surface temperature (SST) in the Kuroshio-Oyashio transition has varied in response to precessional cycle. At the California margin, SST has varied in response to ice volume changes, but the SST difference between inshore and offshore sites (ΔSST_<northeastern Pacific (NEP)>=SST_<ODP1014>-SST_<ODP1016>) has responded to precessional cycle. Comparison of ΔSST_<NEP> and the SST_<MD01-2421> of the central Japan margin revealed anti-phase variation; high ΔSST_<NEP> (indicating weakening of the California Current) corresponded to low SST at the Japan margin (indicating the southward displacement of the northwestern Pacific subarctic boundary and weakening of the Kuroshio Extension), and vice versa. This finding suggests that the intensity of the North Pacific subtropical gyre circulation has varied in response to precessional forcing.

Journal

  • Fossils

    Fossils 86(0), 45-58, 2009

    Palaeontological Society of Japan

References:  73

Codes

  • NII Article ID (NAID)
    110007467299
  • NII NACSIS-CAT ID (NCID)
    AN00041606
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    0022-9202
  • NDL Article ID
    10469432
  • NDL Source Classification
    ZR1(科学技術--生物学) // ZM41(科学技術--地球科学)
  • NDL Call No.
    Z18-838
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE 
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