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A basic study on evaluation of effects on the global deep circulation caused by freshening of Antarctic surface water

Research Project

Project/Area Number 23310003
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionTokyo University of Marine Science and Technology

Principal Investigator

KITADE YUJIRO  東京海洋大学, 海洋科学技術研究科, 准教授 (50281001)

Co-Investigator(Kenkyū-buntansha) TAMURA Takeshi  国立極地研究所, 助教 (40451413)
MIZOBATA Kohei  東京海洋大学, 大学院海洋科学技術研究科, 助教 (80586058)
笠島 克恵  東京海洋大学, 海洋観測支援センター, 特任助教 (30597985)
Co-Investigator(Renkei-kenkyūsha) SHIMADA Keishi  東京海洋大学, 観測支援センター, 博士研究員
Research Collaborator 青木 茂  北海道大学, 低温科学研究所, 准教授
平野 大輔  国立極地研究所, 博士研究員
芦田 将成  東京海洋大学, 大学院海洋科学技術研究科
鈴木 萌  東京海洋大学, 大学院海洋科学技術研究科
白井 優  東京海洋大学, 大学院海洋科学技術研究科
Project Period (FY) 2011-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Keywords海洋科学 / 極域環境 / 環境変動 / 深層循環 / 南極底層水 / 海面塩分 / 深層大循環 / 海氷生産 / 温暖化 / 海洋環境変動 / 高密度陸棚水
Outline of Final Research Achievements

Freshening of Antarctic Bottom Water (AABW) associated with freshening of sea surface water has been reported in recent years. In order to evaluate the effects of freshening of AABW to the Global deep circulation, hydrographic observations, long term mooring observations and turbulence measurements were carried out around 110 E and 140 E in January of 2012 to 2015. We found Bottom Water originating from the Vincennes Bay Polynya (VBBW) in the first time. Our observation also showed that the VBBW has spread into the upper part of AABW in Australia-Antarctica Basin. Freshening of Bottom water was also indicated off the Vincennes Bay region. Especially, the data obtained in January of 2014 showed that the VBBW has a potential to sink down to the ocean floor when the water density of surrounding AABW was reduced by freshening and warming.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • Research Products

    (30 results)

All 2015 2014 2013 2012 2011

All Journal Article (14 results) (of which Peer Reviewed: 13 results,  Open Access: 1 results) Presentation (16 results)

  • [Journal Article] The role of turbulent mixing in the modified Shelf Water overflows that produce Cape Darnley Bottom Water2015

    • Author(s)
      Hirano, D., Y. Kitade, Y. Fukamachi and K. I. Ohshima
    • Journal Title

      Journal of Geophysical Research

      Volume: 120 Issue: 2 Pages: 910-922

    • DOI

      10.1002/2014jc010059

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Antarctic Bottom Water production from the Vincennes Bay Polynya, East Antarctica2014

    • Author(s)
      Kitade, Y., K. Shimada, T. Tamura, G. D. Williams, S. Aoki, Y. Fukamachi, F. Roquet, M. Hindell, S. Ushio, K. I. Ohshima
    • Journal Title

      Geophysical Research Letter

      Volume: 41 Issue: 10 Pages: 3528-3534

    • DOI

      10.1002/2014gl059971

    • NAID

      120005512020

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Antarctic Bottom Water production from the Vincennes Bay Polynya, East Antarctica2014

    • Author(s)
      Y. Kitade, K. Shimada, T. Tamura, G. D. Williams, S. Aoki, Y. Fukamachi, F. Roquet, M. Hindell, S. Ushio, K. I. Ohshima
    • Journal Title

      Geophysical Research Letter 受理印刷中

      Volume: 未定

    • NAID

      120005512020

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantitative evaluation of turbulent mixing in the central equatorial Pacific2014

    • Author(s)
      L. Cheng and Y. Kitade
    • Journal Title

      Journal of Oceanography

      Volume: 70 Issue: 1 Pages: 63-79

    • DOI

      10.1007/s10872-013-0213-5

    • NAID

      40019971139

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Widespread freshening in the seasonal ice zone near 140◦E off the Ad´elie Land Coast, Antarctica, from 1994 to 20122013

    • Author(s)
      S. Aoki, Y. Kitade, K. Shimada, K.I. Ohshima, T. Tamura, C.C. Bajish, M. Moteki, and S.R. Rintoul
    • Journal Title

      Journal of Geophysical Research

      Volume: 118 Pages: 6046-6063

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Antarctic Bottom Water production by intense sea-ice formation in the Cape Darnley Polynya, Nature Geoscience2013

    • Author(s)
      Ohshima, K. I., Y. Fukamachi, G. D.Williams, S. Nihashi, F. Roquet, Y. Kitade, T. Tamura, D. Hirano, L. Herraiz- Borreguero, I. Field, M. Hindell, S. Aoki and M.Wakatsuchi
    • Journal Title

      Highlight article in March issue

      Volume: 6 Issue: 3 Pages: 235-240

    • DOI

      10.1038/ngeo1738

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 南大洋での乱流観測2013

    • Author(s)
      北出裕二郎・嶋田啓資・平野大輔・程 霊巧
    • Journal Title

      月刊海洋

      Volume: 45巻(1) Pages: 23-29

    • Related Report
      2012 Annual Research Report
  • [Journal Article] Glacier tongue calving reduced dense water formation and enhanced carbon uptake2013

    • Author(s)
      Shadwick, E. H., S. R. Rintoul, B. Tilbrook, G. D. Williams, N. Young, A. D. Fraser, H. Marchant, J. Smith & T. Tamura
    • Journal Title

      Geophysical Research Letters

      Volume: 40 Issue: 5 Pages: 904-909

    • DOI

      10.1002/grl.50178

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 相模湾大島東水道の中深層における水温・流速変動の特性2013

    • Author(s)
      王 琦・北出裕二郎・根本雅生
    • Journal Title

      海の研究

      Volume: 22巻 Pages: 1-18

    • NAID

      110009579042

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Potential regime shift in decreased sea ice production after the Mertz Glacier calving2012

    • Author(s)
      Tamura, T., G. D. Williams, A. D. Fraser and K. I. Ohshima
    • Journal Title

      Nature Communications

      Volume: 3 Issue: 1 Pages: 826-826

    • DOI

      10.1038/ncomms1820

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mixing process on the northeast coast of Hokkaido in summer2012

    • Author(s)
      M. Ishizu, Y. Kitade and Y. Michida
    • Journal Title

      Journal of Oceanography

      Volume: Vol. 65 Issue: 1 Pages: 639-645

    • DOI

      10.1007/s10872-012-0152-6

    • NAID

      40019567966

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 丹後半島沿岸の前急潮2012

    • Author(s)
      熊木 豊・北出裕二郎・戸嶋 孝
    • Journal Title

      海の研究

      Volume: 21巻 Pages: 201-217

    • NAID

      110009562818

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Amplification of Semidiurnal Internal Tide Observed in Outer Part of Tokyo Bay2011

    • Author(s)
      Y.Kitade, Y.Igeta, R.Fujii, M.Ishii
    • Journal Title

      Journal of Oceanography

      Volume: 67 Issue: 5 Pages: 613-625

    • DOI

      10.1007/s10872-011-0061-0

    • NAID

      10030227806

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observed Turbulence Properties over the Continental Shelf and Slope off Jogashima, Sagami Bay2011

    • Author(s)
      Yuli Naulita, Y. Kitade
    • Journal Title

      La mer

      Volume: 49 Pages: 1-15

    • NAID

      10029806764

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] ビンセネス湾沖における南極底層水の特性2015

    • Author(s)
      北出裕二郎・嶋田啓資・白井優・青木茂・深町康・田村岳史・牛尾収輝・大島慶一郎
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学(東京)
    • Year and Date
      2015-03-23
    • Related Report
      2014 Annual Research Report
  • [Presentation] オーストラリア南極海盆におけるAABW水塊の変質過程について2015

    • Author(s)
      白井優・北出裕二郎・嶋田啓資
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京海洋大学(東京)
    • Year and Date
      2015-03-23
    • Related Report
      2014 Annual Research Report
  • [Presentation] 南大洋表層混合層の発達過程における水塊変動と熱塩フラックス2014

    • Author(s)
      鈴木萌・北出裕二郎・青木茂・馬場尚一郎・勝又勝郎
    • Organizer
      第5回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所(立川)
    • Year and Date
      2014-12-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] ビンセネス湾沖南極底層水の特性2014

    • Author(s)
      北出裕二郎・嶋田啓資・白井 優・青木 茂・田村岳史・深町 康・牛尾収輝・大島慶一郎
    • Organizer
      第5回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所(立川)
    • Year and Date
      2014-12-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] オーストラリア南極海盆における南極底層の水塊特性の変化2014

    • Author(s)
      白井優・北出裕二郎・嶋田啓資
    • Organizer
      第5回極域科学シンポジウム
    • Place of Presentation
      国立極地研究所(立川)
    • Year and Date
      2014-12-02
    • Related Report
      2014 Annual Research Report
  • [Presentation] Antarctic Bottom Water production from intense sea-ice formation in the Cape Darnley Polynya.2014

    • Author(s)
      Ohshima, K. I., Y. Fukamachi, G. D. Williams, S. Nihashi, T. Tamura, Y. Kitade, D. Hirano, S. Aoki, and M. Wakatsuchi
    • Organizer
      11th Annual Meeting, Asia Oceania Geosciences Society
    • Place of Presentation
      北海道大学(札幌)
    • Year and Date
      2014-07-28 – 2014-08-01
    • Related Report
      2014 Annual Research Report
  • [Presentation] ビンセネス湾ビンセネス湾ビンセネス湾沖南極沖南極底層水の流動特性について底層水の流動特性について底層水の流動特性について2014

    • Author(s)
      白井 優・北出裕二郎・嶋田啓資・青木 茂・深町 康・大島慶一郎
    • Organizer
      日本海洋学会
    • Place of Presentation
      東京海洋大学,東京
    • Related Report
      2013 Annual Research Report
  • [Presentation] ビンセネス湾ポリニヤにおける高密度陸棚水の生成について2013

    • Author(s)
      北出裕二郎・嶋田啓資・田村岳史・深町 康・青木 茂・牛尾収輝・大島慶一郎
    • Organizer
      日本海洋学会
    • Place of Presentation
      北海道大学,札幌
    • Related Report
      2013 Annual Research Report
  • [Presentation] ヘリ搭載型マイクロ波放射計による海氷厚観測2013

    • Author(s)
      田村 岳史, 大島 慶一郎, 中田 和輝, 野村 大樹, 豊田 威信, 牛尾 収輝
    • Organizer
      2013年度日本海洋学会春季大会
    • Place of Presentation
      東京、東京海洋大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] 南極海における深・底層水の形成と水塊変質の謎2012

    • Author(s)
      北出裕二郎
    • Organizer
      「極域における環境と生態系の変動に関する研究」キックオフシンポジウム
    • Place of Presentation
      東京海洋大学(東京都)
    • Year and Date
      2012-03-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] Properties of Antarctic Bottom Water observed off Vincennes Bay2012

    • Author(s)
      Yujiro Kitade, Keishi Shimada, Takeshi Tamura, Lingqiao Cheng, Yasushi Fukamachi, Shigeru Aoki, Shuki Ushio3, Kay I Ohshima
    • Organizer
      American Geophysical Union 2012 Fall meeting
    • Place of Presentation
      サンフランシスコ、モスコーンセンター
    • Related Report
      2012 Annual Research Report
  • [Presentation] New findings of Antarctic Bottom Water: Ongoing warming/freshening and a discovered AABW source2012

    • Author(s)
      Ohshima, K. I., Y. Fukamachi, S. Aoki, T. Tamura, and G. D. Williams
    • Organizer
      The Third Symposium on Polar Science
    • Place of Presentation
      立川、国立極地研究所
    • Related Report
      2012 Annual Research Report
  • [Presentation] ビンセネス湾沖での係留観測により捉えられた南極底層水の特性2012

    • Author(s)
      北出 裕二郎, 嶋田 啓資, 田村 岳史, 深町 康, 青木 茂, 牛尾 収輝, 大島 慶一郎
    • Organizer
      第3回極域科学シンポジウム
    • Place of Presentation
      立川、国立極地研究所
    • Related Report
      2012 Annual Research Report
  • [Presentation] ビンセネス湾沖で観測された南極底層水の特性2012

    • Author(s)
      北出 裕二郎, 嶋田 啓資, 田村 岳史, 深町 康, 青木 茂, 牛尾 収輝, 大島 慶一郎
    • Organizer
      2012年度日本海洋学会秋季大会
    • Place of Presentation
      清水、東海大学
    • Related Report
      2012 Annual Research Report
  • [Presentation] リュツォ・ホルム湾沖におけるAASWの水温の長期トレンドと海況特性2011

    • Author(s)
      北出裕二郎、後藤晴香、平野大輔
    • Organizer
      第34回極域気水圏シンポジウム
    • Place of Presentation
      国立極地研究所(東京都)
    • Year and Date
      2011-10-17
    • Related Report
      2011 Annual Research Report
  • [Presentation] 南極大陸ケープダンレー沖陸棚端における海底境界混合の特徴2011

    • Author(s)
      平野大輔、北出裕二郎
    • Organizer
      第34回極域気水圏シンポジウム
    • Place of Presentation
      国立極地研究所(東京都)
    • Year and Date
      2011-10-17
    • Related Report
      2011 Annual Research Report

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Published: 2011-04-06   Modified: 2019-07-29  

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