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DEVELOPMENT OF ECONOMICAL DESIGN AND PREDICTION CONCEPT SOFT FOR DECONTAMINATION PROJECTS OF ENVIRONMENTAL CONTAMINANTS.

Research Project

Project/Area Number 09555171
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field Civil and environmental engineering
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KUDO Akira  KYOTO UNIVERSITY, RESEARCH REACTOR INSTITUTE, PROFESSOR, 原子炉実験所, 教授 (00281113)

Co-Investigator(Kenkyū-buntansha) MATSUI Saburo  KYOTO UNIVERSITY, FACULTY OF ENGINEERING, PROFESSOR, 工学研究科, 教授 (90092808)
SUGAWARA Masataka  OSAKA SANGYO UNIVERSITY, PROFESSOR, 工学部, 教授 (60026119)
TERASHIMA Yasushi  KYOTO UNIVERSITY, FACULTY OF ENGINEERING, PROFESSOR, 工学研究科, 教授 (50019717)
TAKAYUKI Sasaki  KYOTO UNIVERSITY, RESEARCH REACTOR INSTITUTE, RESEACH ASSOCIATE, 原子炉実験所, 助手 (60314291)
藤川 陽子  京都大学, 原子炉実験所, 助教授 (90178145)
Project Period (FY) 1997 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 2000: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1999: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1998: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1997: ¥3,500,000 (Direct Cost: ¥3,500,000)
KeywordsMERCURY / METHYL MERCURY / MINAMATA BAY / YATSUSHIRO SEA / SEDIMENT / 水俣 / 拡散
Research Abstract

During the last 25 years, surface sediments have been collected from 24 fixed sampling stations to a depth of 4.0cm in the Yatsusiro Sea. Researchers have found that the mercury content of the samples was not a cause for concern and that the concentrations outside the bay were below the acutely toxic level. At the same time the investigators spotted a trend in mercury behavior in the sea of 633km^2. Between 1975 and 1984 mercury concentrations gradually increased, with sampling stations close to Minamata Bay showing the greatest rise, from 0.62ppm in 1975, to 10.3ppm in 1984. At another, more remote station, concentrations rose slightly. The pattern was interrupted in 1982, an exceptional year when 400 mm of rain fell in three hours, a 200-year event. Millions of tons of clean soils were washed from surrounding mountain slopes to cover the sediments in the Yatsushiro Sea. Three years after this storm, the government initiated a decontamination project. Mercury concentrations at one sampling station near the bay dropped from 10.5 to 1.56ppm from 1985 to 1990 and decreased further to a background level of 0.3ppm in 1997. The Japanese government eventually took responsible action against mercury pollution in the bay, but it was too slow to act. The decontamination project costing US$500 million and the first such effort in the world, will not only clean up the bay and protect the people around the Yatsushiro Sea for many years to come.

Report

(5 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] A.Kudo,Y.Fujikawa, et al.: "Lessons from Minamata Mercury Pollution, Japan-After a continuous 22 years of observation."Water Sciences and Technology. 38. 187-193 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo,and R.R Turner,: "Mercury Contamination of Minamata Bay : Historical Overview and Progress Towards Recovery"Environmental Science (Springer-Verlag シリーズもの). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea"Water Science and Technology. 42. 177-184 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo and R.R Turner.: "Mercury Contamination of Minamata Bay : Historical Overview and Progress Towards Recovery"Mercury Contaminated Sites. 143-158 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea"Proceeding of ECOHAZARD'99. 243-250 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo: "Encyclopedia of Global Environmental Change Volume III"John Wiley and Sons Ltd., London, United Kingdom(未定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A., ET AL.: "LESSONS FROM MINAMATA MERCURY POLLUTION, JAPAN-AFTER A CONTINUOUS 22 YEARS OF OBSERVATION."WATER SCIENCES AND TECHNOLOGY. 38. 187-193 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A., ET AL.: "MERCURY CONTAMINATION OF MINAMATA BAY : HISTORICAL OVERVIEW AND PROGRESS TOWARDS RECOVERY"ENVIRONMENTAL SCIENCE (SPRINGER-VERLAG). 1998.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A., ET AL.: "HISTORY OF MERCURY MIGRATION FROM MINAMATA BAY TO THE YATSUSHIRO SEA"WATER SCIENCE AND TECHNOLOGY. 42. 177-184 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A., ET AL.: "MERCURY CONTAMINATION OF MINAMATA BAY : HISTORICAL OVERVIEW AND PROGRESS TOWARDS RECOVERY"MERCURY CONTAMINATED SITES. 143-158 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A., ET AL.: "HISTORY OF MERCURY MIGRATION FROM MINAMATA BAY TO THE YATSUSHIRO SEA"PROC OF ECOHAZARD'99. 243-250 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] KUDO,A: "ENCYCLOPEDIA OF GLOBAL ENVIRONMENTAL CHANGEVOLUME III"JOHN WILEY AND SONS LTD., LONDON, UNITED KINGDOM, (IN PRESS.).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] A.Kudo,Y.Fujikawa, et al.: "Lessons from Minamata Mercury Pollutiton,Japan-After a continuous 22 years of observation."Water Sciences and Technology. 38. 187-193 (1998)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo,and R.R Turner,: "Mercury Contamination of Minamata Bay : Historical Overview and Progress Towards Recovery"Environmental Science (Springer-Verlagシリーズもの). (1998)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea"Water Science and Technology. 42. 177-184 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo and R.R Turner.: "Mercury Contamination of Minamata Bay : Historical Overview and Progress Towards Recovery"Mercury Contaminated Sites. 143-158 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea"Proceeding of ECOHAZARD`99. 243-250 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo: "Encyclcpedia of Global Enviromental Change Volume III"Jhon Wiley and Sons Ltd. ,London,United Kingdom(未定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Kudo et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea"Int. Water Association, Eoohazard 99. 1. 243-250 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Fujikawa Y.,Kudo A.et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea -The beginning of the Migration, Effect of Reclamation and Recent Tendency"IAEA Conf. Marine Pollution. (印刷中). (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] Kudo,A.,Fujikawa,Y.et al.: "Lessons from Minamata Mercury Pollution,Japan-After a continuous 22 years of observation." Water Sciences and Technology. 38. 187-193 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Kudo,A.and Turner,R.R.: "Mercury Contamination of Minamata Bay : Historical Overview and Progress Towards Recovery" Environmental Science (Springer-Verlagシリーズもの). (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Fujikawa,Y.,Kudo A.et al.: "History of Mercury Migration from Minamata Bay to the Yatsushiro Sea-The beginning of the Migration,Effect of Reclamation and Recent Tendency" IAEA Conf.Marine Pollution. 印刷中. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Fujikawa,Y.,Kudo A.et al.: "Mercury Transport from Minamata Bay to the Surrounding Sea Area : Possible Ecological Impact" Comparative Evaluation of Environmental Toxicants. 259-260 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] A.Kudo: "Lessons from Minamata Mercury Pollution,Japan" J.of Water Sciences and Technology. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Fujikawa: "Mercury Transport from Minamata Bay to the Surrounding Sea Area- Possible Ecological Impact" Proc.of International Workshop on Comparative Evaluation of Health Effects of Environmental Toxicants Derived from Advanced Technologies. (in press). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤川陽子: "20年間の八代海底質の定点観測から見た水俣湾より八代海への水銀の拡散 I.底質中総水銀濃度の変遷" 第52回土木学会全国大会 学術講演会要旨集. (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 藤川陽子: "20年間の八代海底質の定点観測から見た水俣湾より八代海への水銀の拡散 II.河川の土砂による希釈効果" 第52回土木学会全国大会 学術講演会要旨集. (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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