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HIGH RESOLUTION CYCLESTRATIGRAPHY BASED ON DARK ANDLITGT COLOR-BANDED CLAYLAYERS

Research Project

Project/Area Number 04402014
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field Stratigraphy/Paleontology
Research InstitutionHOKKAID UNIVERSITY

Principal Investigator

KOIZUMI Itaru  HOKKAIDO UNIVERSITY,FACULTY OF SCIENCE,PROFESSOR, 理学部, 教授 (20029721)

Co-Investigator(Kenkyū-buntansha) TADA Ryuji  UNIVERSITY OF TOKYO,GEOLOGICAL INSTITUTE A.PROFESSOR, 大学院・理学系研究科, 助教授 (30143366)
NAKAGAWA Mitsuhiro  HOKKAIDO UNIVERSITY,FACULTY OF SCIENCE,ASSISTANT, 理学部, 助手 (50217684)
福沢 仁之  北海道大学, 理学部, 助手 (80208933)
佐藤 誠司  北海道大学, 理学部, 助教授 (30000813)
Project Period (FY) 1992 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥18,500,000 (Direct Cost: ¥18,500,000)
Fiscal Year 1994: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1993: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1992: ¥12,600,000 (Direct Cost: ¥12,600,000)
KeywordsJAPAN SEA / DARK AND LIGHT LAYERS / EUSTATIC SEALEVEL CHANGES / TSUSIMA WARM CURRENT / MILANKOVICH CYCLE / DANSGAAR-OESCHGER OSCILATION / ODP / EAST CHINA SEA COASTAL WATER / 珪藻群集 / 氷期-間氷期 / 氷河性海水準変動 / 対馬海峡 / ミランコビッチサイクル / ダンスガード・オイッシャーサイクル / 対馬暖流 / 深層水循環 / 黄砂フラックス / 縞状堆積物 / 菱鉄鉱(シデライト) / 三方湖 / 水月湖 / 部分循環湖 / 砕屑物 / ミランコビッチ
Research Abstract

LATE QUATERNARY SEDIMENTS RECOVERED BY THE ODP LEG127 FROM THE BASINAL SITES OF THE JAPAN SEA ARE CHARACTERIZED WITH DISTINCTLY DARK AND LIGHT COLOR-BANDED CLAY.THICKNESS OF THE DARK AND LIGNT LAYERS VARIES FROM A CENTIMETER TO MORE THAN 2 METERS.THESE DARK AND LIGHT LAYERS ARE CORRELATABLE AND SYNCHRONOUS BASIN WIDE,SUGGESTING THEY RECORD SOME SORT OF REGIONAL OR GLOBAL PALEOENVIRONMENTAL CHANGES TO WHICH THE JAPAN SEA RESPONDED AS A SINGLE SYSTEM.IN ORDER TO UNDERSTAND THE IMPLICATION OF THESE DARK AND LIGNT LAYERS,WE ANALYZED LATE QUATERNARY SAMPLES.
INFLOW OF THE TSUSIMA WARM CURRENT THROUGH THE TSUSIMA STRAIT WAS SIGNIFICANT DURING SEA LEVEL HIGHSTANDS WHEN HIGH SALINITY OF THE SURFACE WATER OF THE JAPAN SEA ALLOWED INTENSIVE DEEP WATER PRODUCTION AND VENTILATION OF THE BOTTOM.DURING INTERMEDIATE STANDS,THE EAST CHINA SEA COASTAL WATER PROPAGATED TO THE MOUTH OF THE TSUSIMA STRAIT AND FLOWED INTO THE SEA.DUE TO ITS LOWER SALINITY,THE INFLOW OF THE COASTAL WATER CAUSED WEAK DENSITY STRATIFICATION AND SUBDUED PRODUCTION OF DEEP WATER,WHICH RESULTED IN ANOXIC TO EUXINIC BOTTOM WATER CONDITION.DURING THE VERY LOWSTANDS,THE JAPAN SEA WAS NEARLY ISOLATED AND THE SURFACE WATER SALINITY DRASTICALLY DECREASED,CAUSING STRONG DENSITY STRATIFICATION,WHICH RESULTED IN STABLE EUXINIC BOTTOM WATER CONDITION.
HIGH RESOLUTION ANALYSES OF THE DARK AND LIGHT LAYERS SUGGESTED THAT MILANKOVICH CYCLE RESULTING FROM THE EARTHS ORBITAL ELEMENTS AS WELL AS DANSGAARD-OESCHGER OSCILLATION REPORTED FROM GREENLAND ICE CORES ARE RECORDED IN THE JAPAN SEA SEDIMENTS AS VARIATION IN ORGANIC CARBON CONTENT,DIATOM ABUNDANCE CHANGES,AND CHANGES IN KOSA FRACTION WITHIN DETRITAL COMPONENT.IT WAS ALSO SUGGESTED THAT PALE-OCEAN CIRCULATION HAS BEEN MOST SENSITIVE TO SEA LEVEL CHANGES DURING INTERMEDIATE STANDS.

Report

(4 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • 1992 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Tada,R.: "Paleoceanographic evolution of the Japan Sea" Palaeogeography,Palaeoclimatology,Palaeoecology. 108. 487-508 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 多田隆治・入野智之: "第四紀後期における日本海の海洋循環変化" 月刊地球. 16(11). 667-677 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 福沢仁之・小泉格: "ODP、795地点の鉱物組成から見た氷期-間氷期サイクル" 月刊地球. 16(11). 454-457 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 福沢仁之・小泉格: "東アジアにおける更新世後期の気候変動を記録した日本海の堆積物" 月刊地球. 16(11). 678-684 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 中川光弘・藤岡換太郎・古田俊夫・小泉〓子: "日本海、Leg127、128コア中の火山灰層ー火山ガラスの主成分化学組成からの火山灰対比と第四紀火成活動史ー" 月刊地球. 16(11). 691-698 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 小泉格・安田喜憲(編): "海・潟・日本人ー日本海文明交流圏ー" 講談社, 302 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] TADA,R.: "PALEOCEANOGRAPHIC EVOLUTION OF THE JAPAN SEA" PALEO-GEOGRAPHY,CLIMATOLOGY,ECOLOGY. 108. 487-508 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] TADA,R.AND IRINO,T.: "OCEAN WATER CIRCULATION IN THE JAPAN SEA DURING THE LATE QIATERNARY TIME" CHIKYU MONTHLY. 16 (11). 667-677 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] FUKUSAWA,H.AND KOIZUMI,I.: "GLACIAL-INTERGLACIAL CLYCLES BAED ON MINERAL COMPOSITION IN ODP,SITE 795" CHIKYU MONTHLY. 16 (11). 454-457 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] FUKUSAWA,H.AND KOIZUMI,I.: "JAPAN SEA SEDIMENTS RECORDED CLIMATIC CHANGING OF THE LATE PLEISTOCENE IN EAST ASIA" CHIKYU MONTHLY. 16 (11). 678-684 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] NAKAGAWA,M., FUGIOKA,K., FURUTA,T.AND KOIZUMI,I.: "ASHLAYERS IN THE CORES OF JAPAN SEA LEG 127 AND 128-ASHLAYERS CORRELATION AND QUATERNARU VOLCANIC ACTIVITY BASED ON THE PRINCIPAL CHEMICAL COMPONENTS OF VALCANIC GLASSES" CHIKYU MONTHLY. 16 (11). 691-698 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] KOIZUMI,I.AND YASUDA,Y.: OCEAN-LAGOON-JAPANESE-JAPANES CULTULAL INTERCHANGING BLOC. KOUDAN-SHA, 1-302 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Tada,R.: "Paleoceanographic evolution of the Japan Sea" Palaeogeography、Paloeoclimatology、Palaeoecology. 108. 487-508 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 多田隆治・入野智之: "第四紀後期における日本海の海洋循環変化" 月刊 地球. 16(11). 667-677 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 福沢仁之・小泉格: "ODP、795地点の鉱物・組成からみた氷期-間氷期サイクル" 月刊 地球. 16(11). 454-457 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 福沢仁之・小泉格: "東アジアにおける更新世後期の気候変動を記録した日本海の堆積物" 月刊 地球. 16(11). 678-684 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 中川光弘・藤岡換太郎・古田俊夫・小泉〓子: "日本海、Leg127、128コア中の火山灰層-火山ガラスの主成分化学組成からの火山灰対比と第四紀火成活動史-" 月刊 地球. 16(11). 691-698 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 小泉格・安田喜憲(編): "海・潟・日本人-日本海文明交流圏-" 講談社, 302 (1993)

    • Related Report
      1994 Annual Research Report
  • [Publications] 小泉格・坂本竜彦: "日本海における第四紀後期生物生産量の変動サイクル" 月刊地球. 15. 12-18 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 多田隆治: "堆積リズムと表層環境変動" 月刊地球. 15. 8-11 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 福沢仁之・中村文成・奥村智: "部分循環水域の縞状堆積物に記録された環境変動" 月刊地球. 15. 282-286 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小泉格: "海洋環境の変動性と周期性" 学術月報. 47. 129-139 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小泉 格: "日本海における第四紀後期生物生産量の変動サイクル" 月刊地球. 15. 12-18 (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 佐藤 誠司: "日本における″Mid-Neogene climatic optimum″について" 化石. 53. 7-19 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ryuji TADA: "Correlation of dark and light layers,and theorigin of theircydicty in the Quaternary sediments from the Japan Sea." Proceedings of the Ocean Drilling Program Scientific Results. 127/128. 577-601 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 福沢 仁之: "千島弧内帯における栄養塩に富む深層水の初出現" 堆積学研究会報. 37. 21-30 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 小泉 格: "地球環境変動とミランコヴィッチ・サイクル" 古今書院, 174 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Itaru KOIZUMI: "Pacific Neogene-Environment,Evolution,and Events." University of Tokyo Press, 257 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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