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2011 Fiscal Year Final Research Report

Reconstruction of surface ocean freshening trend from oxygen isotope record in coral skletons

Research Project

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Project/Area Number 21510013
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionNagoya University

Principal Investigator

ABE Osamu  名古屋大学, 環境学研究科, 助教 (00293720)

Co-Investigator(Renkei-kenkyūsha) MORIMOTO Maki  名古屋大学, 大学院・環境学研究科, 研究員 (30377999)
Project Period (FY) 2009 – 2011
Keywordsサンゴ年輪 / 酸素同位体比 / 海洋淡水化傾向 / 海洋環境復元
Research Abstract

Surface ocean freshening trend for last 100 years is reconstructed using massive, hermatypic coral skeletons, which distribute widely in tropical-subtropical region. Time-series data for oxygen isotope ratios of coral skeletons archived in NOAA Paleoclimate Program are used because oxygen isotope ratio in coral skeletal carbonates is controlled by water temperature and salinity. With global SST reanalysis dataset and the relationship between coral oxygen isotope ratio and water temperature determined from previous investigations, spatio-temporal distribution of salinity for tropical-subtropical Pacific are reconstructed. In the western Pacific ocean, long-term freshening trend is insignificant, whereas significant freshening trend is recognized at central to eastern Pacific region. According to these results, it is suggested that tropical climate is gradually shifted to the El Nino-like condition for last 100 years.

  • Research Products

    (19 results)

All 2012 2011 2010 2009 Other

All Journal Article (9 results) (of which Peer Reviewed: 8 results) Presentation (9 results) Remarks (1 results)

  • [Journal Article] Carbon-and oxygen-isotope compositions of a deep-water modern brachiopod Campagea japonica collected off Aguni-jima, Central Ryukyu Islands, southwestern Japan2012

    • Author(s)
      Takayanagi H., R. Asami, O. Abe, H. Kitagawa, T. Miyajima, and Y. Iryu
    • Journal Title

      Geochemical Journal

    • Peer Reviewed
  • [Journal Article] Reply to Nicholson's comment on"Consistent calculation of aquatic gross production from oxygen triple isotope measurements"2011

    • Author(s)
      Kaiser J. and O. Abe
    • Journal Title

      Biogeoscience Discussions

      Volume: 8 Pages: 10517-10541

  • [Journal Article] Triple isotope composition of oxygen in atmospheric water vapor2010

    • Author(s)
      Uemura R., E. Barkan, O. Abe, and B. Luz
    • Journal Title

      Geophysical Research Letters

      Volume: 37 Pages: 04402

    • Peer Reviewed
  • [Journal Article] Under-ice salinity and stable isotope distribution of Saroma-ko Lagoon2010

    • Author(s)
      Morimoto M., K. Kawanobe, O. Abe, T. Kawai, T. Kawamura, and K. Shirasawa
    • Journal Title

      Hydrological Processes

      Volume: 24 Pages: 904-916

    • Peer Reviewed
  • [Journal Article] Air-sea gas transfer in a shallow, flowing and coastal environment estimated by dissolved inorganic carbon and dissolved oxygen analyses2010

    • Author(s)
      Abe O., A. Watanabe, VVSS Sarma, Y. Matsui, H. Yamano, N. Yoshida, and T. Saino
    • Journal Title

      Journal of Oceanography

      Volume: 66 Pages: 363-372

    • Peer Reviewed
  • [Journal Article] Estimation of gas transfer velocity using triple isotopes of dissolved oxygen2010

    • Author(s)
      Sarma VVSS, O. Abe, M. Honda, and T. Saino
    • Journal Title

      Journal of Oceanography

      Volume: 66 Pages: 489-504

    • Peer Reviewed
  • [Journal Article] Determining the 17O/16O ratio of water using a water-CO2 equilibration method : application to glacial-interglacial changes in 17O-excess from the Dome Fuji ice core2010

    • Author(s)
      Uemura R., O. Abe, and H. Motoyama
    • Journal Title

      Antarctica Geochimica et Cosmochimica Acta

      Volume: 74 Pages: 4919-4936

    • Peer Reviewed
  • [Journal Article] 伊勢湾・三河湾における現生底生有孔虫群集の分布2010

    • Author(s)
      横井大作、阿部理、井龍康文
    • Journal Title

      化石

      Volume: 89 Pages: 15-26

    • Peer Reviewed
  • [Journal Article] A 6. 5-year continuous record of sea surface salinity and seawater isotopic composition at Harbor of Ishigaki Island2009

    • Author(s)
      Abe O., S. Agata, M. Morimoto, M. Abe, K. Yoshimura, T. Hiyama, and N. Yoshida
    • Journal Title

      Isotopes in Environmental and Health Studies

      Volume: 45 Pages: 247-258

    • Peer Reviewed
  • [Presentation] Clumped is otope the rmometry in coral skeletons2011

    • Author(s)
      Abe O
    • Organizer
      Second international workshop on clumped isotopes
    • Place of Presentation
      London
    • Year and Date
      20110800
  • [Presentation] Isotopic composition of atmospheric oxygen2011

    • Author(s)
      Abe O. and J. Kaiser
    • Organizer
      EGU2011 General Assembly
    • Place of Presentation
      Vienna
    • Year and Date
      20110400
  • [Presentation] Seasonal variation ofΔ17O profile of dissolved O2 in Lake Biwa2010

    • Author(s)
      Abe O, K. Hayakawa, VVSS Sarma, N. Yoshida, and Y. Matsui
    • Organizer
      Japan. Fifth international symposium on isotopomers
    • Place of Presentation
      Amsterdam
    • Year and Date
      20100600
  • [Presentation] Clumped isotope in coral skeletons2010

    • Author(s)
      Abe O
    • Organizer
      First international workshop on clumped isotopes
    • Place of Presentation
      Seattle
    • Year and Date
      20100400
  • [Presentation] サンゴ骨格炭酸塩の13C-18O結合度と生息水温の関係2009

    • Author(s)
      阿部理、杉原薫、森本真紀、山田桂太、吉田尚弘
    • Organizer
      日本地球化学会2009年度年会
    • Place of Presentation
      東広島
    • Year and Date
      20090900
  • [Presentation] Partitioning atmospheric and photosynthetic oxygen inventory using three-isotope of dissolved oxygen2009

    • Author(s)
      Abe O, VVSS Sarma, A. Watanabe, Y. Matsui, N. Yoshida, and T. Saino
    • Organizer
      AOGS2009
    • Place of Presentation
      Singapore
    • Year and Date
      20090800
  • [Presentation] Mass independent is otope fractionation of molecular oxygen during electron ionization2009

    • Author(s)
      Abe O, M. Ozima, and A. Yamada
    • Organizer
      Met Soc2009
    • Place of Presentation
      Nancy
    • Year and Date
      20090700
  • [Presentation] サンゴ年輪の安定炭素同位体比は環境指標になりえるか否か?2009

    • Author(s)
      阿部理
    • Organizer
      2009年度地球惑星科学連合大会
    • Place of Presentation
      千葉
    • Year and Date
      20090500
  • [Presentation] 酸素分子が電子衝撃によってイオン化される時に生じる質量非依存同位体効果2009

    • Author(s)
      阿部理、小嶋稔、山田明憲
    • Organizer
      2009年度地球惑星科学連合大会
    • Place of Presentation
      千葉
    • Year and Date
      20090500
  • [Remarks] 阿部理、森本真紀、吉田尚弘(2011) Workshop on Clumped Isotopes(第一回、第二回)参加報告、日本地球化学会ニュース、207、36-40

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Published: 2013-07-31  

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