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Fundamental study on monitoring of chemical substances concerning environmental change of marginal sea

Research Project

Project/Area Number 11205206
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionHokkaido University

Principal Investigator

NORIKI Shinichiro (2001-2003)  Hokkaido University, Graduate School of Environmental Earth Science, Professor, 大学院・地球環境科学研究科, 教授 (80109511)

渡邉 修一 (1999-2000)  北海道大学, 大学院・地球環境科学研究科, 助教授 (00167131)

Co-Investigator(Kenkyū-buntansha) WATANABE Syuuichi  Japan marine Science & Technology Center, Ocean Observation and Research Department, Senior Scientist, 海洋科学技術センター, 研究主幹 (00167131)
NARITA Hisashi  Hokkaido University, Graduate School of Environmental Earth Science, Assisstant, 大学院・地球環境科学研究科, 助手 (50250501)
中山 英一郎  滋賀県立大学, 環境科学部, 教授 (50108982)
角皆 静男  北海道大学, 大学院・地球環境科学研究科, 教授 (00001587)
Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 2002: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2001: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2000: ¥2,900,000 (Direct Cost: ¥2,900,000)
Fiscal Year 1999: ¥3,100,000 (Direct Cost: ¥3,100,000)
KeywordsMarginal Sea / Monitoring / Japan Sea / Carbonate substances / Profiler / Particulate material / 物質循環 / 化学トレーサー / セジメントトラップ / GOOS / 環境変化 / CFCs / 炭酸系 / 二酸化炭素 / near-GOOS / 化学物質 / 炭素系 / 科学トレーサー
Research Abstract

We described a new portable in situ CO2 measuring system in the ocean applying spectrophotometric analyis (CO2 profiler). In situ CO2 fugacity was measured by detecting pH change in synthetic solutions (inner solution) that were equilibrated with seawater through gas permeable membrane. This CO2 profiler can be operated up to the depth of 3000m. As the equilibrium membrane, the amorphous Teflon (AF Teflon) tube was used because of its high gas permeability coefficients. The inner solution consisted of a 2μM bromocresol purple (BCP) solution mixed with the 5μM sodium hydroxide solution. In the measurements of Pacific Ocean, we had good agreement of the results between the in situ CO2 profiler and the discrete bottle sample analysis.
Time-series sediment trap experiments at three areas in the Japan Sea clarified temporal and spatial distributions of particulate flux. The largest flux was observed in the western margin of the sea, and the tendency was same in the North Pacific. Biogenic opal and lithogenic aluminosilicates were dominant components of settling particle in the Japan Sea. La/Yb and Mn/Al ratios in particles made us possible to estimate the origin of aluminosilicates. The cycle of lithogenic materials in the Japan Sea were controlled by three kinds of aluminosilicates as follows. (1)"Fresh" particles from Asian continent, (2)"Old" particles from Asian continet and (3)Island-Arc detritus.

Report

(5 results)
  • 2003 Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] Y.Nakano: "Development of an in situ CO2 profiler using spectrophotometric technique"TECHNO-OGEAN 2002, Proceeding. T-L-1-1 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.H.Shin: "Dynamics of sinking particles in the northen Japan Trench : Biogenic chemical components and fatty acids biomarkers."Deep-Sea Res.. 49. 5665-5683 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 乗木新一郎: "陸起源粒子の外洋域への輸送過程"海洋化学研究. 15(2). 72-88 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Nakano: "Development of an in situ CO2 profiler using spectrophotometric technique"TECHNO-OCEAN 2002, Proceeding, T-L-1-1. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] K.H.Shin: "Dynamics of sinking particles in the northen Japan Trench : Biogenic chemical components and fatty acids biomarkers."Deep-Sea Res.. 49. 5665-5683 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Noriki: "Tnasport mechanism of lithogenic material to open ocean"Transaction of The Research Institute of Oceanchemistry. 15-2. 72-88 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Y.Nakano: "Development of an in situ CO2 profiler using spectrophotometric technique"TECHNO-OCEAN 2002, Proceeding. T-L-1-1 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] K.H.Shin: "Dynamics of sinking particles in the northen Japan Trench : Biogenic chemical components and fatty acids biomarkers"Deep-Sea Res.. 49. 5665-5683 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 乗木新一郎: "陸起源粒子の外洋域への輸送過程"海洋化学研究. 15(2). 72-88 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 乗木新一郎, 澤田理栄子, 小池素子, 釘井豊和: "海洋におけるアルミニウム(Al)とチタン(Ti)"月刊海洋. 25. 133-138 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 乙壕重嘉, 伊藤雅史, 乗木新一郎: "セジメントトラップによって観測された非定常的物質移動"月刊地球. 32. 26-32 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Otosaka, S., S.Noriki: "REEs and Mn/Al ratio of settling particle : horizontal transport of particulate material in the northern Japan Trench"Mar.Chem.. 72. 329-342 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] Aramaki, T., S.Watanabe, T.Kuji, M.Wakatsuchi: "The Okhotsk-Pacific seawater exchange in the viewpoint of vertical profiles of radiocarbon around the Bussol' Strait. Geophys."Res.Letter. 28. 3971-3974 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 渡邉 修一: "縁辺海の環境変化に関わる化学物質のモニタリング"月刊海洋. 34. 57-63 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Ono Y.W.Wataanbe,S.Watanabe: "Recent increase of DIC in the western North Pacific"Mar.Chem.. 72. 317-328 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Tsurushima, S.Watanabe and S.Tsunogai: "Determination of light hydrocarbons dissolved in seawater"Talanta. 50. 577-583 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.Tsunogai, S.Watanabe and T.Sato: "Is there a continental shelf pump for the absorption of atmospheric CO2?"Tellus. 51B. 701-712 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2018-03-28  

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