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2010 Fiscal Year Self-evaluation Report

Direct observations of tidal mixing and studies on ocean/climate variability synchronized with 18.6-year period nodal tidal cycle

Research Project

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Project/Area Number 20221002
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Environmental dynamic analysis
Research InstitutionThe University of Tokyo

Principal Investigator

YASUDA Ichiro  The University of Tokyo, 大気海洋研究所, 教授 (80270792)

Project Period (FY) 2008 – 2012
Keywords潮汐鉛直混合 / 長期大気海洋変動 / 海洋物質循環 / 海洋生態系
Research Abstract

本研究では、1)これまでほとんど直接観測が行われておらずモデルにも組み込まれていない北太平洋亜寒帯海域千島列島・オホーツク海、アリューシャン・ベーリング海域、及び黒潮域における海洋鉛直混合を直接観測し大きな潮汐混合を実証し、2)大きな混合が生じるメカニズムを明らかにし、3)混合過程が水塊形成・変質・海流・物質循環・生態系に及ぼす影響を評価すること、及び、4)大きな鉛直混合が潮汐の18.6年振動に連動して変動することに起因する海洋・気候長周期変動について観測データやモデルを用いてその存在と変動過程を明らかにすること、を目的として研究を行っている。

  • Research Products

    (14 results)

All 2011 2010 2009 2008 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (5 results) Book (3 results) Remarks (1 results)

  • [Journal Article] Oceanic iron supply mechanisms which support the spring diatom bloom in the Oyashio region, western subarctic Pacific2011

    • Author(s)
      J.Nishioka, T.Ono, H.Saito, K.Sakaoka, T.Yoshimura
    • Journal Title

      JOURNAL OF GEOPHYSICAL RESEARCH 116

      Pages: C02021, doi : 10.1029/2010JC006321

    • Peer Reviewed
  • [Journal Article] Fine-and microstructure observations in the Urup Strait, Kuril Islands, during August of 2006.2010

    • Author(s)
      S.Itoh, I.Yasuda, T.Nakatsuka J.Nishioka, Y.N.Volkov
    • Journal Title

      J.Geophys.Res.Oceans 115

      Pages: C08004, doi : 10.1029/2009JC005629

    • Peer Reviewed
  • [Journal Article] Bidecadal variability in the Bering Sea and the relation with 18.6year perioid nodal tidal cycle.2010

    • Author(s)
      S.Osafune, I.Yasuda
    • Journal Title

      J.Geophys.Res. 115

      Pages: DOI : 10.1029/2008JC005110

    • Peer Reviewed
  • [Journal Article] The 18.6-year period moon-tidal cycle in Pacific Decadal Oscillation reconstructed from tree-rings in western North America2009

    • Author(s)
      I.Yasuda
    • Journal Title

      Geophys.Res.Lett. 36

      Pages: L05605, doi : 10.1029/2008GL036880

    • Peer Reviewed
  • [Journal Article] Pacific bidecadal variability regulated by tidal mixing around the Kuril Islands.2008

    • Author(s)
      H.Hasumi, I.Yasuda, H.Tatebe, M.Kimoto
    • Journal Title

      Geophysical Research Letters 35

      Pages: L14601, doi : 10.1029/2008GL034406

    • Peer Reviewed
  • [Presentation] 潮汐混合とオホーツク海・ベーリング海の物理・化学・生物過程の問題.2010

    • Author(s)
      安田一郎, 他
    • Organizer
      シンポジウム「潮汐混合とオホーツク海・ベーリング海の物理・化学・生物過程:白鳳丸KH09-4航海・おしょろ丸・クロモフ2006/2007シンセシス」
    • Place of Presentation
      大気海洋研究所
    • Year and Date
      20101130-20101201
  • [Presentation] 18.6-year moon-tidal cycle in ocean/climate and its impact on climate/ecosystem predictability (P1-D1-6184).2010

    • Author(s)
      Yasuda I., S.Osafune, S.Konda, S.Itoh, H.Hasumi
    • Organizer
      International Symposium "Climate Change effects on Fish and Fisheries"
    • Place of Presentation
      Sendai
    • Year and Date
      20100425-20100427
  • [Presentation] Nutrient Stream in the Kuroshio region2010

    • Author(s)
      Komatsu, K., I.Yasuda, S.Itoh, T.Ikeya, K.Hidaka, M.Yagi, T.Nonomura, S.Osafune, H.Nishikawa, H.Kaneko
    • Organizer
      AGU 2010 Fall meeting
    • Place of Presentation
      San Francisco, USA.
    • Year and Date
      2010-12-17
  • [Presentation] Present Status on Proxy-based Paleoclimate Reconstruction during Last Millennium in Asian Region2010

    • Author(s)
      Nakatsuka, T.
    • Organizer
      PMIP (Paleoclimate Model Intercomparison Project) 3 Workshop
    • Place of Presentation
      国際学会招待講演(Kyoto, Japan)
    • Year and Date
      2010-12-06
  • [Presentation] 18.6-year period moon-tidal cycle and North Pacific ocean-climate variability.2009

    • Author(s)
      Yasuda I.
    • Organizer
      J09-IAPSO/IAMAS MOCA09
    • Place of Presentation
      Montreal国際学会招待講演
    • Year and Date
      20090000-20090722
  • [Book] 自然環境学の創る世界(小松幸生(編))2011

    • Total Pages
      216
    • Publisher
      朝倉書店
  • [Book] 月刊海洋,42(海洋将来変動予測の詳細な予測と影響評価に向けて)2010

    • Author(s)
      羽角博康
    • Total Pages
      300-304
  • [Book] 月刊海洋号外50号総特集「潮汐混合とオホーツク海・ベーリング海-その物理・化学・生物過程」2008

    • Author(s)
      安田一郎, 他
    • Total Pages
      143
    • Publisher
      海洋出版
  • [Remarks] ホームページ

    • URL

      http://lmr.ori.u-tokyo.ac.jp/feog/186.html

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Published: 2012-02-13   Modified: 2016-04-21  

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