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2010 Fiscal Year Final Research Report

Geochemical ocean sections study focusing on trace elements and isotopes in the Indian Ocean and the Japan Sea (GEOTRACES Program)

Research Project

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Project/Area Number 19253006
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Geochemistry/Astrochemistry
Research InstitutionThe University of Tokyo

Principal Investigator

GAMO Toshitaka  The University of Tokyo, 大気海洋研究所, 教授 (70143550)

Co-Investigator(Kenkyū-buntansha) OBATA Hajime  東京大学, 大気海洋研究所, 准教授 (90334309)
AMAKAWA Hiroshi  東京大学, 大気海洋研究所, 特任研究員 (60260519)
Co-Investigator(Renkei-kenkyūsha) SOHRIN Yoshiki  京都大学, 化学研究所, 教授 (50197000)
HASUMI Hiroyasu  東京大学, 大気海洋研究所, 准教授 (40311641)
OKAMURA Kei  高知大学, 海洋コア総合研究センター, 准教授 (70324697)
ZHANG Jing  富山大学, 大学院・理工学研究部, 教授 (20301822)
NAKAGUCHI Yuzuru  近畿大学, 理工学部, 准教授 (30188916)
YAMADA Masatoshi  放射線医学総合研究所, 環境放射能影響研究グループ, チームリーダー (10240037)
SHIRAIWA Yoshihiro  筑波大学, 生命環境科学研究科, 教授 (40126420)
NORIKI Shinichiro  北海道大学, 地球環境科学研究院, 教授 (80109511)
MINAMI Hideki  東海大学, 生物理工学部, 准教授 (60254710)
NISHIOKA Jun  北海道大学, 低温科学研究所, 准教授 (90371533)
SHITASHIMA Kiminori  電力中央研究所, 環境科学研究所, 上席研究員 (70371490)
KATO Yoshihisa  東海大学, 海洋学部, 教授 (00152752)
MINAGAWA Masao  北海道大学, 地球環境科学研究院, 教授 (10250507)
MARUO Masahiro  滋賀県立大学, 環境科学部, 准教授 (80275156)
OTOSAKA Shigeyoshi  日本原子力研究開発機構, 原子力基礎工学研究部門, 研究員 (40370374)
NAKAYAMA Noriko  東京大学, 大気海洋研究所, 助教 (60431772)
NAGAI Hisao  日本大学, 文理学部, 教授 (10155905)
MURAYAMA Masafumi  高知大学, 海洋コア総合研究センター, 准教授 (50261350)
Project Period (FY) 2007 – 2010
Keywords海洋の微量元素 / 同位体 / GEOTRACES / 生物地球化学 / インド洋の化学観測 / 日本海の化学観測 / 国際共同調査 / 研究船白鳳丸
Research Abstract

研究成果の概要(英文):As part of the international GEOTRACES (Global marine biogeochemical cycles of trace elements and their isotopes) program, we successfully conducted meridional research cruises in the Indian Ocean (from Arabian Sea to the Antarctic Ocean) and in the Japan Sea using the research vessel Hakuho Maru. We took clean seawater samples (total ~300 samples) for the measurement of GEOTRACES key paremeters(Fe,Al,Zn,Mn,Cd,Cu,δ^<15>N,δ^<13>C,^<230>Th,^<231>Pa, Pb isotopes,Nd isotopes), and their analyses are now ongoing in shorebased laboratories.

  • Research Products

    (41 results)

All 2011 2010 2009 2008 2007 Other

All Journal Article (17 results) (of which Peer Reviewed: 17 results) Presentation (21 results) Book (3 results)

  • [Journal Article] Coupled isotopic systematics of surface cerium and neodymium in the Pacific Ocean.2011

    • Author(s)
      Tazoe H., Obata H., Gamo T.
    • Journal Title

      Geochem. Geophys. Geosys.(Q04004, doi : 10.1029/2010GC003342.) 12

    • Peer Reviewed
  • [Journal Article] Microbial carbon isotope fractionation to produce extraordinarily heavy methane in aging hydrothermal plumes over the southwestern Okinawa Trough.2010

    • Author(s)
      Gamo T., Tsunogai U., Ichibayashi S., Chiba H., Obata H., Oomori T., Noguchi T., Baker E.T., Doi T., Maruo M., Sano Y.
    • Journal Title

      Geochem. J. 44

      Pages: 477-487

    • Peer Reviewed
  • [Journal Article] Sources of pore water in a Tanegashima mud volcano inferred from chemical and stable isotope studies.2010

    • Author(s)
      Nakayama N., Ashi J., Tsunogai U., Gamo T., Tanahashi M.
    • Journal Title

      Geochem. J. 44

      Pages: 561-569

    • Peer Reviewed
  • [Journal Article] Gas geochemical characteristics of hydrothermal plumes at the HAKUREI and JADE vent sites, the Izena Cauldron, Okinawa Trough.2010

    • Author(s)
      Kawagucci S., Shirai K., Lan T-F., Takahata N., Tsunogai U., Sano Y., Gamo T.
    • Journal Title

      Geochem. J. 44

      Pages: 507-518

    • Peer Reviewed
  • [Journal Article] Isotopic variation of molecular hydrogen in 20°-375℃ hydrothermal fluids as detected by a new analytical method.2010

    • Author(s)
      Kawagucci S., Toki T., Ishibashi J., Takai K., Ito M., Oomori T., T.Gamo
    • Journal Title

      J. Geophys. Res.(G03021, doi : 10.1029/2009JG001203.) 115

    • Peer Reviewed
  • [Journal Article] Study on vertical profiles of rare earth elements by using an ocean general circulation model.2009

    • Author(s)
      Oka A., Hasumi H., Obata H., Gamo T., Yamanaka Y.
    • Journal Title

      Global Biogeochem.(doi : 10.1029/2008GB003353.) 23

      Pages: GB4025

    • Peer Reviewed
  • [Journal Article] Rare earth elements in seawater during an iron-induced phytoplankton bloom of the western subarctic Pacific (SEEDS-II).2009

    • Author(s)
      Hara Y., Obata H., Doi T., Hongo Y., Gamo T., Takeda S., Tsuda A.
    • Journal Title

      Deep-Sea Res. II. 56

      Pages: 2839-2851

    • Peer Reviewed
  • [Journal Article] Long-term bottom water warming in the north Ross Sea.2009

    • Author(s)
      Ozaki H., Obata H., Naganobu M., Gamo, T.
    • Journal Title

      J. Oceanogr. 65

      Pages: 235-244

    • Peer Reviewed
  • [Journal Article] Vertical distribution of iron(II) and its relation to organic substances in Lake Biwa. Japan.2009

    • Author(s)
      Maruo M.. Tate K.. Ohta K.. Hayakawa K., Obata H.
    • Journal Title

      Verhandlungen Internationale Vereinigung theoretische und angewandte Limnologie 30

      Pages: 1379-1383

    • Peer Reviewed
  • [Journal Article] Nd isotopic composition in the central North Pacific.2009

    • Author(s)
      Amakawa H.. Sasaki K., Ebihara M.
    • Journal Title

      Geochimica et Cosmochimica Acta 73

      Pages: 4705-4716

    • Peer Reviewed
  • [Journal Article] Helium isotopes of seawater in the Japan Sea.2008

    • Author(s)
      Takahata N., Sano Y., Horiguchi K., Shirai K., Gamo T.
    • Journal Title

      J. Oceanogr. 64

      Pages: 293-301

    • Peer Reviewed
  • [Journal Article] Silver in the Tokyo Bay estuarine waters and Japanese rivers.2008

    • Author(s)
      Zhang Y., Obata H., Gamo T.
    • Journal Title

      J. Oceanogr. 64

      Pages: 259-265

    • Peer Reviewed
  • [Journal Article] In-situ survey of nanomolar manganese in seawater around a volcanic crator at Teishi Knoll using an autonomous underwater vehicle.2008

    • Author(s)
      Doi T., Takano M., Okamura K., Ura T., Gamo T.
    • Journal Title

      J. Oceanogr. 64

      Pages: 471-477

    • Peer Reviewed
  • [Journal Article] O_2 consumption rate and its isotopic fractionation factor in the deep water of the Philippine Sea.2008

    • Author(s)
      Nakayama N., Yamanaka Y., Gamo, T.
    • Journal Title

      J. Oceanogr. 64

      Pages: 451-457

    • Peer Reviewed
  • [Journal Article] Methane, manganese, and helium-3 in newly discovered hydrothermal plumes over the Central Indian Ridge, 18°-20°S2008

    • Author(s)
      Kawagucci S., Okamura K., Kiyota K., Tsunogai U., Sano Y., Tamaki K., Gamo T.
    • Journal Title

      Geochem. Geophys. Geosyst.(Q10002, doi : 10.1029/2008GC002082.) 9

    • Peer Reviewed
  • [Journal Article] Particle flux in the twilight zone of the eastern Indian Ocean : A constraint from ^<234>U-^<230>Th and ^<228>Ra-^<228>Th disequilibria.2007

    • Author(s)
      Okubo A., Obata H., Luo S., Gamo T., Yamamoto Y., Minami H., Yamada M.
    • Journal Title

      Deep-Sea Res. I 54

      Pages: 1758-1772

    • Peer Reviewed
  • [Journal Article] Dissolved oxygen of the Japan Sea bottom water : a sensitive alarm for the global climatic change.

    • Author(s)
      Gamo T.
    • Journal Title

      Trends Anal. Chem. (in press.)

    • Peer Reviewed
  • [Presentation] Hydrothermal plumes in the Gulf of Aden : Characterization from Mn, Fe, CH_4, and its δ^<13>C.2011

    • Author(s)
      Gamo T., Okamura K., Hatanaka H., Hasumoto H., Hirota A., Tsunogai U., Tamaki K.
    • Organizer
      IUPAC International Congress on Analytical Sciences 2011 (ICAS 2011)
    • Place of Presentation
      Kyoto
    • Year and Date
      2011-06-26
  • [Presentation] Automated in-situ flow analytical method of Fe(II) in seawater using luminal chemiluminescence detection.2011

    • Author(s)
      Obata H., Mase A., Wakiyama S., Gamo T., Maruo M., Okamura K.
    • Organizer
      IUPAC International Congress on Analytical Sciences 2011 (ICAS 2011)
    • Place of Presentation
      Kyoto
    • Year and Date
      2011-06-26
  • [Presentation] Surface Nd isotopic distrubution in the South Pacific Ocean and the Pacific sector of the Southern Ocean.2011

    • Author(s)
      Tazoe H., Sato H., Nagai H., Obata H., Gamo T.
    • Organizer
      Liege Colloquium
    • Place of Presentation
      Brussels (Belgium)
    • Year and Date
      2011-05-06
  • [Presentation] Determination of dissolved Fe(II) in seawater of the western North Pacific with luminal chemiluminescence method2010

    • Author(s)
      H.Obata, A.Mase, T.Gamo, J.Nishioka, S.Takeda
    • Organizer
      2010 American Geophysical Union Fall Meeting
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      2010-12-15
  • [Presentation] Geochemical studies on the Japan Sea over the last 30 years2010

    • Author(s)
      Gamo T.
    • Organizer
      2010 Asia GEOTRACES Planning Workshop
    • Place of Presentation
      台北(台湾)
    • Year and Date
      2010-10-05
  • [Presentation] Dissolved methane and its carbon isotope ratio in the Japan Sea (East Sea)2010

    • Author(s)
      T.Gamo, U.Tsunogai, A.Hirota, D-J.Kang, K-R.Kim
    • Organizer
      5^<th> PEACE Workshop
    • Place of Presentation
      江陵(韓国)
    • Year and Date
      2010-09-11
  • [Presentation] アラビア海酸素極小層におけるN_2/Ar/O_2同時測定からみた脱窒による窒素量2010

    • Author(s)
      中山典子,小倉健,蒲生俊敬
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      東京農業大学網走キャンパス
    • Year and Date
      2010-09-08
  • [Presentation] 西部北太平洋における鉄(II)の分布およびその酸化過程2010

    • Author(s)
      小畑元,馬瀬輝,蒲生俊敬,西岡純,武田重信
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      東京農業大学網走キャンパス
    • Year and Date
      2010-09-07
  • [Presentation] KH-09-5次航海乗船研究者一同,インド洋の南北縦断GEOTRACES観測航海(序報)2010

    • Author(s)
      蒲生俊敬,小畑元
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      東京農業大学網走キャンパス
    • Year and Date
      2010-09-07
  • [Presentation] Excess N_2 formation by denitrification in the Indian Ocean oxygen deficient zone estimated by simultaneous N_2, Ar, and O_2 measurements.2010

    • Author(s)
      N.Nakayama, T.Ogura, T.Gamo
    • Organizer
      Goldschmidt Conference 2010
    • Place of Presentation
      Knocksville, USA
    • Year and Date
      2010-06-14
  • [Presentation] 水曜海山熱水活動域における熱水及び海水中の希土類元素の挙動2009

    • Author(s)
      寺西源太,小畑元,蒲生俊敬,田副博文,石橋純一郎
    • Organizer
      日本海洋学会秋季大会
    • Place of Presentation
      京都大学
    • Year and Date
      2009-09-26
  • [Presentation] 東京湾周辺域における白金と銀の挙動2009

    • Author(s)
      小畑元・Antoni Ferrer I Santos,田副博文,堤眞,蒲生俊敬
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      広島大学
    • Year and Date
      2009-09-17
  • [Presentation] 太平洋中緯度海域におけるbottom scavengingの影響2009

    • Author(s)
      大久保綾子・小畑元・蒲生俊敬
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      広島大学
    • Year and Date
      2009-09-17
  • [Presentation] Ten percent decrease of dissolved oxygen in the Japan Sea (East Sea) bottom water for the last 30 years.2009

    • Author(s)
      Gamo T., Kim K-R.
    • Organizer
      Goldschmidt Conference
    • Place of Presentation
      Davos (Switzerland)
    • Year and Date
      2009-06-25
  • [Presentation] 日本海における溶存メタン濃度および炭素同位体比2009

    • Author(s)
      蒲生俊敬・角皆潤・廣田明成・Kyun-Ryul Kim
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京大学
    • Year and Date
      2009-04-07
  • [Presentation] 太平洋中緯度海域のTh同位体鉛直分布-海底直上における除去過程と混合過程の影響2009

    • Author(s)
      大久保綾子・小畑元・蒲生俊敬・鄭建
    • Organizer
      日本海洋学会春季大会
    • Place of Presentation
      東京大学
    • Year and Date
      2009-04-07
  • [Presentation] 海洋大循環モデルによる希土類元素濃度分布の再現2008

    • Author(s)
      岡顕,羽角博康,小畑元,蒲生俊敬,山中康裕
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      東京大学(駒場)
    • Year and Date
      2008-09-19
  • [Presentation] 水曜海山熱水系における微量金属元素の地球化学的研究2008

    • Author(s)
      寺西源太,小畑元,蒲生俊敬,石橋純一郎,木村浩之
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      東京大学(駒場)
    • Year and Date
      2008-09-17
  • [Presentation] Discovery of hydrothermal plumes at the Rodriguez segment, mid-Indian Ridge2007

    • Author(s)
      Okamura K., Gamo T., Kiyota K., Kawagucci S., Ura T., Sakamaki K., Nagahashi K., Connelly D., Boulart C., Poonyth A., Tamaki K.
    • Organizer
      AGU Fall Meeting
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      20071200
  • [Presentation] Vertical distribution of ^<230>Th in mid-latitude of the Pacific Ocean.2007

    • Author(s)
      Okubo A., Obata H., Gamo T., Zheng J.
    • Organizer
      AGU Fall Meeting
    • Place of Presentation
      San Francisco (USA)
    • Year and Date
      20071200
  • [Presentation] 中央インド洋海嶺(南緯18-20度)におけるメタンプルーム:新たな熱水活動の兆候2007

    • Author(s)
      川口慎介,岡村慶,清田馨,角皆潤,浦環,玉木賢策,佐野有司,蒲生俊敬
    • Organizer
      日本地球化学会年会
    • Place of Presentation
      岡山
    • Year and Date
      20070900
  • [Book] 海洋試料,地球化学講座第8巻(地球化学実験法)2010

    • Author(s)
      蒲生俊敬
    • Total Pages
      46-61
    • Publisher
      培風館
  • [Book] 海底熱水活動,エンサイクロペディア・ブリタニカ・オンライン・ジャパン大項目事典(Britannica Japan Co., Ltd)2009

    • Author(s)
      蒲生俊敬
  • [Book] 地球化学講座第7巻(環境の地球化学)2007

    • Author(s)
      蒲生俊敬
    • Total Pages
      235
    • Publisher
      培風館

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Published: 2012-01-26   Modified: 2016-04-21  

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