Direct evaluation of sea-ice production and associated volume transport of Antarctic Bottom Water in a coastal region off the Antarctica

2010 Fiscal Year Final Research Report

• Project/Area Number: 20540419
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Hokkaido University
• Principal Investigator: FUKAMACHI Yasushi Hokkaido University, 低温科学研究所, 准教授 (20250508)
• Project Period (FY): 2008 – 2010
• Keywords: 南極海 / 南極底層水 / 海氷 / 係留観測

Research Abstract

Based on the mooring data obtained off the eastern flank of the Kerguelen plateau in the pathway of Antarctic Bottom Water (AABW), we revealed that the equatorward transport of AABW in this region is comparable to that from the Weddell Sea and an important part of the meridional overturning circulation. Using the mooring data off the Cape Darnley Polynya (CDP), where sea-ice production is active, we confirmed that AABW is produced locally in this region. We have succeeded in the mooring observation of sea-ice thickness in the CDP and obtained the first high-precision data in the Antarctic coastal polynyas.

Research Products

• [Journal Article] Strong export of Antarctic Bottom Water east of the Kerguelen plateau (2010)
  • Author(s): Fukamachi Y., S.R.Rintoul, J.A.Church, S.Aoki, S.Sokolov, M.A.Rosenberg, M.Wakatsuchi
  • Journal Title: Nature Geoscience 3 Pages: 327-331
  • URL: http://eprints.lib.hokudai.ac.jp/dspace/handle/2115/44116
  • Peer Reviewed
• [Journal Article] 未知の南極底層水生成域の発見と今後の観測に向けて--ケープダンレープロジェクト-- (2010)
  • Author(s): 大島慶一郎・深町康・青木茂・清水大輔・田村岳史・牛尾収輝・橋田元・北出裕二郎・若土正曉
  • Journal Title: 月刊海洋 号外54 Pages: 12-20
• [Journal Article] 海鷹丸により観測されたケープダンレー沖の南極底層水と海洋微細構造の特徴 (2010)
  • Author(s): 北出裕二郎・平野大輔・大島慶一郎・深町康
  • Journal Title: 月刊海洋 号外 Pages: 29-36
• [Journal Article] Southern Ocean Observing Systems (SOOS) : Rationale and Strategy for Sustained Observations of the Southern Ocean. (2009)
  • Author(s): Rintoul, S.R, K.Speer, M.Sparrow, M.Meredith, E.Hoffmann, E.Fahrbach, C.Summerhayes, A.Worby, M.England, R.Bellerby, S.Speich, D.Costa, J.Hall, M.Hindell, G.Hosie, K.Stansfield, Y.Fukamachi, T.de Bruin, A.Naveira, Garabato, K.Alberson, V.Ryabinin, H.C.Shin, S.Gladyshev
  • Journal Title: in Proceedings of OceanObs'09 : Sustained Ocean Observations and Information for Society(21-25 September 2009)(Hall, J.,D.E.Harrison, and D.Stammer, Eds.)(ESA Publication WPP-306.)(Venice, Italy) Vol.2
  • Peer Reviewed
• [Journal Article] Deep western boundary current and southern frontal systems of the Antarctic Circumpolar Current southeast of the Kerguelen Plateau (2008)
  • Author(s): Aoki S., N.Fujii, S.Ushio, Y.Yoshikawa, S.Watanabe, G.Mizuta, Y.Fukamachi, M.Wakatsuchi
  • Journal Title: Journal of Geophysical Research 113 Pages: C08038,doi : 10.1029/2007JC004627
  • Peer Reviewed
• [Presentation] ケープダンレー沖における南極底層水の形成と流動に関する数値的研究 (2011)
  • Author(s): 中山佳洋, 大島慶一郎, 松村義正, 羽角博康, 深町康
  • Organizer: 日本海洋学会春季大会
  • Place of Presentation: 東京大学柏キャンパス,柏(震災により大会中止,講演要旨集による発表に代替)
  • Year and Date: 2011-03-24
• [Presentation] Polynya formation and sea ice production off Cape Darnley Antarctica, revealed by ALOS PALSAR and AMSR-E data (2010)
  • Author(s): 大島慶一郎, 二橋創平, 田村岳史, 深町康
  • Organizer: 4th ALOS Joint PI Symposium
  • Place of Presentation: Otemachi Sankei Plaza, Tokyo (Japan)
  • Year and Date: 2010-11-15
• [Presentation] 海氷厚・南極底層水の係留系観測-温暖化で氷厚・底層水は変化しているか?- (2010)
  • Author(s): 大島慶一郎, 深町康, 牛尾収輝, 橋田元, 青木茂, 清水大輔, 小野数也
  • Organizer: 南極観測シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2010-09-15
• [Presentation] Southern Ocean Circulation and Change : Australia's Contribution to the IPY CASO and SASSI Programs (2010)
  • Author(s): Rintoul, S.R., J.-B.Sallee, S.Sokolov, Y.Fukamachi, A.Meijers
  • Organizer: International Polar Year Oslo Science Conference
  • Place of Presentation: Oslo, Norway
  • Year and Date: 2010-06-09
• [Presentation] Antarctic Bottom Water revealed by mooring measurement off Cape Darnley,Antarctica (2010)
  • Author(s): 深町康, 大島慶一郎, 青木茂, 北出裕二郎, 田村岳史, 若土正曉
  • Organizer: International Polar Year Oslo Science Conference
  • Place of Presentation: Oslo, Norway
  • Year and Date: 2010-06-09
• [Presentation] 新たに発見された南極底層水とそれに関わる海氷生産の直接観測-ケープダンレープロジェクト- (2010)
  • Author(s): 大島慶一郎, 深町康, 青木茂, 清水大輔, 田村岳史, 若土正曉, 北出裕二郎, 平野大輔, 牛尾収輝, 橋田元, 吉川久幸, 中岡慎一郎
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学,東京
  • Year and Date: 2010-03-29
• [Presentation] 係留観測による南極海ケープダンレー沖における南極底層水について (2010)
  • Author(s): 深町康, 大島慶一郎, 青木茂, 北出裕二郎, 田村岳史, 若土正曉
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学, 東京
  • Year and Date: 2010-03-29
• [Presentation] ケープダンレー沖で観測された南極底層水の特性と分布 (2010)
  • Author(s): 北出裕二郎, 平野大輔, 大島慶一郎, 深町康
  • Organizer: 2010年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学,東京
  • Year and Date: 2010-03-29
• [Presentation] Global Mapping of sea ice production and heat/salt flux in ice-covered regions using satellite passive microwave data (2010)
  • Author(s): Ohshima K.I., T.Tamura, S.Nihashi, K.Iwamoto, D.Simizu, Y.Fukamachi
  • Organizer: US CLIVAR/SeaFlux Workshop, Surface Fluxes : Challenges for High Latitudes
  • Place of Presentation: Boulder, Colorado
  • Year and Date: 2010-03-18
• [Presentation] 南極巨大沿岸ポリニヤにおける係留系等による海氷高精度観測 (2009)
  • Author(s): 大島慶一郎, 牛尾収輝, 橋田元, 青木茂, 深町康, 豊田威信, 清水大輔, 二橋創平, 田村岳史, 小野数也, 榎本浩之, 舘山一孝
  • Organizer: 南極観測シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2009-12-10
• [Presentation] 係留系による,未知の南極底層水と海氷生産量・厚さの直接観測 (2009)
  • Author(s): 大島慶一郎, 深町康, 青木茂, 清水大輔, 田村岳史, 小野数也, 牛尾収輝, 橋田元, 吉川久幸, 北出裕二郎, 平野大輔
  • Organizer: 南極観測シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2009-12-10
• [Presentation] ケープダンレープロジェクト-新たに発見された南極底層水とそれに関わるか海氷生産の直接観測 (2009)
  • Author(s): 大島慶一郎, 深町康, 青木茂, 清水大輔, 田村岳史, 北出裕二郎, 平野大輔, 牛尾収輝, 橋田元, 吉川久幸, 中岡慎一郎
  • Organizer: 国立極地研究所第32回極域気水圏シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2009-11-17
• [Presentation] 係留観測による南極海ケープダンレー沖における南極底層水の変動について (2009)
  • Author(s): 深町康, 大島慶一郎, 青木茂, 北出裕二郎, 田村岳史
  • Organizer: 国立極地研究所第32回極域気水圏シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2009-11-17
• [Presentation] 海鷹丸によりダンレー沖で観測された深底層水の特性と海洋微細構造 (2009)
  • Author(s): 北出裕二郎, 平野大輔, 大島慶一郎, 深町康
  • Organizer: 国立極地研究所第32回極域気水圏シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2009-11-17
• [Presentation] 南極海インド洋セクターのケルゲレン海台東側斜面域における南極底層水流量の時間変動 (2009)
  • Author(s): 深町康, S.R.Rintoul, J.A.Church, 青木茂, S.Sokolov, M.A.Rosenberg, 若土正曉
  • Organizer: 2009年度日本海洋学会秋季大会
  • Place of Presentation: 京都大学,京都
  • Year and Date: 2009-09-26
• [Presentation] Mooring measurement of the deep western boundary current over the eastern flank of the Kerguelen Plateau in the Indian Sector of the Antarctic (2009)
  • Author(s): Fukamachi Y., S.Aoki, J.A.Church, S.R.Rintoul, M.Rosenberg, M.Wakatsuchi
  • Organizer: 9th International Conference of the Southern Hemisphere Meteorology and Oceanography, Melbourne Convention Center
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2009-02-11
• [Presentation] Sea ice production in the polynya and the associated bottom water formation off the Cape Darnley, East Antarctica (2009)
  • Author(s): 大島慶一郎, 田村岳史, 深町康, 青木茂
  • Organizer: 9th International Conference of the Southern Hemisphere Meteorology and Oceanography
  • Place of Presentation: Melbourne Convention Center, Melbourne, Australia
  • Year and Date: 2009-02-10
• [Presentation] 南極海インド洋セクターのケルゲレン海台東側斜面域における南極底層水の流量 (2008)
  • Author(s): 深町康, 青木茂, John A.Church, Stephen R.Rintoul, Mark Rosenberg, 若土正曉
  • Organizer: 国立極地研究所第31回極域気水圏・生物圏合同シンポジウム
  • Place of Presentation: 国立極地研究所,立川
  • Year and Date: 2008-12-02
• [Presentation] Observations and indices in the Southern Ocean (2008)
  • Author(s): Speer K., Y.Fukamachi
  • Organizer: The Third CLIVAR (Climate Variability and Predictability)/GODAE (Global Ocean Data Assimilation Experiment) Meeting on Ocean Synthesis Evaluation
  • Place of Presentation: JAMSTEC Office, Tokyo, Japan
  • Year and Date: 2008-10-06
• [Presentation] Downslope Mixing of Antarctic Bottom Water from East Antarctic Polynyas (2008)
  • Author(s): Williams, G., S.Aoki, S.Marsland, Y.Fukamachi, B.Galton-Fenzi, S.Rintoul, N.Bindoff
  • Organizer: SCAR/IASC IPY Open Science Conference
  • Place of Presentation: Park Inn Pribaltiyskaya Hotel, St.Petersburg, Russia
  • Year and Date: 2008-07-09
• [Remarks] 報道関連情報:
• [Remarks] (1)海の循環「エンジン」一端南極沖に深層流:毎日新聞,2010年5月11日.
• [Remarks] (2)深層に低温の海流北大など観測毎秒20センチの流れ:日経産業新聞,2010年5月11日.
• [Remarks] (3)Antarctic conveyor belt revealed in detail : physicsworld.com (The website of the Institute of Physics), April 28, 2010.
• [Remarks] (4)Scientist test powerful ocean current off Antarctica, THE INDEPENDENT, April 27, 2010.
• [Remarks] (5) Powerful ocean current off Antarctica factor in climate change, The Sydney Moring Herald, April 26, 2010.
• [Remarks] (6)Huge ocean current found circling Antarctica: THE AUSTRALIN, April 26, 2010.
• [Remarks] (7)An oceanic 'fast-lane' for climate change : Nature News, Published online 25 April 2010 |Nature|doi:10.1038/news.2010.201