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1987 Fiscal Year Final Research Report Summary

Study on the ice sheet dynamics and its environmental changes of the East Antarctica

Research Project

Project/Area Number 61302023
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 気象・海洋・陸水学
Research InstitutionFaculty of Engineering, Hokkaido University

Principal Investigator

MAE Shinji  Fac. of Engineering, Hokkaido University, 工学部, 教授 (80022672)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Shuhei  Kitami Institute of Technology, 教授 (50125390)
FUJII Yoshiyuki  National Institute of Polar Research, 助教授 (20125214)
WATANABE Okitugu  National Insitute of Polar Research, 教授 (60111861)
NARITA Hideki  Institute of Low Temperature Science, Hokkaido Univ., 低温科学研究所, 講師 (20001662)
中尾 正義  国立防災科学技術センター, 雪害実験研究所, 室長 (90142695)
HONDOH Takeo  Fac. of Engineering, Hokkaido University
Project Period (FY) 1986 – 1987
KeywordsAntarctica / Ice Seet / Mizuho Plateau / Ice Core / Shirase Glacier / Basal Sliding / Climatic Change / アイスレーダー
Research Abstract

This project was designed as a comprehensive interdisciplinary field and laboratory research effort to systematically investigate the ice sheet dynamics and past climatic changes of the Mizuho Plateau, East Antarctica. Three of the major goals of this project were analysing a 700m deep Mizuho ice core, mapping the thickness and he subsurface topography of the ice sheet and measuring the surface velocity of the ice sheet. The results obtained are as follows.
1. Oxygen-18 analyses of the Mizuho ice core reveal that ^<18>o concentration increases with decreasing depth above 150m depth. This fact suggests the lowering of the ice sheets surface.
2.The results of microparticle analysis of ice core suggest that there was a big environmental change several thousands years ago.
3. The radio echo sounding survey shows that the ice is melting on the bedrock at the large part of the Mizuho Plateau.
4. The thinning of ice sheet at the rate of 1 m/a was observed over the down stream area of the Mizuho Plateau by the satellite navigation system.
These facts suggest that the Mizuho Plateau, East Antarctica is in unstable condition of catastrophic advance due to basal sliding of ice sheet and the basal sliding of the ice sheet extends to the whole area down stream the Shirase Glacier drainage basin.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Shuji Fujita: Proc. NIPR Symp.Polav Meteor. and Glaciol.1. 122-131 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinji Mae: Aunals of Glaciology. 9. 1-6 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Minoru Yoshida: Annals of Glaciology. 9. 221-224 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Yoshiyuki Fijii: Annals of Glaciology. 10. (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hideki Narita: Annals of Glaciology. 10. (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Okitsugu Watanabe: Annals of Glaciology. 10. (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 前晋爾 高橋浩一郎.岡本和人 編: "化石燃料の消費加が極氷に及ぼす影響(NHKブックス,21世紀の地球環境気候と生物圏の末来)" 日本放送協会出版, 230 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shinji Mae ed,Skarato,andM,Tomi: "Ice Sheet Dynamics and Rheology of Ice under Hydrostatic Pressuvw Rheology of Solids and of the Eavfh" Oxford Univevsity Press, (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Kunio Kawada: "Borehole closure at Mizuho Station, Antarctica" Memoirs of NIPR, Special issue. 45. 66-73 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Hideki Narita: "Textures and fabrics of 700m deep ice core obtained at Mizuho Stateion, East Antarctica." Memoirs of NIPR, Special Issue. 45. 74-77 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masayoshi Nakawo: "Volume expansion of a 413.5m Mizuho core after its recovery" Memoirs of NIPR, Special Issue. 45. 78-85 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinji Mae: "Airborne radio echo sounding in the Shirase Glacier Drainage Basin" Annals of Glaciology. 9. 1-6 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Okitugu Watanabe: "Reological characteristics of the variations in ^<18>o, electric conductivity and physical properties of surface and shallow cores from katabatic windregion, Mizuho Plateau." Annals of Glaciology. 10. in press (1988)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shinji Mae: Ice Seet Dynamics and Rheology of Ice under Hydrostatic Pressure. Oxford University Press, (1988)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1989-03-30  

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