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Studies on the Permafrost Occurrence Related to the Past Climatic Changes in Antarctic Regions

Research Project

Project/Area Number 01041004
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionField Research
Research InstitutionHokkaido University

Principal Investigator

FUKUDA Masami  Institute of Low Temperature Science, Hokkaido University, Prof., 低温科学研究所, 教授 (70002160)

Co-Investigator(Kenkyū-buntansha) CASASSA Gino  Instituto Antarctico Chile, Research Assoc., 助手
TROMBOTTO Dario  Instituto de Nivioloqia y Glaciologa Argentino, Research Assoc., 助手
RETAMAL Eugenio  IDIEM, Universidad de Chile, Prof., 理工学部, 教授
STRELIN J.  アルゼンチン極地研究所, 助手
SONE Toshio  Institute of Low Temperature Science, Hokkaido University, Research Fellow, 低温科学研究所, 日本学術振興会特別研 (10222077)
TAKAHASHI Nobuyuki  Hokkai-Gakuen University, Associate Prof., 教養部, 助教授 (20202153)
SHIMOKAWA Kazuo  Sapporo University, Associate Prof., 女子短期部, 助教授 (70206225)
STRELIN Jorge  Instituto Antarctico Argentino, Research Assoc.
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 1990: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1989: ¥8,000,000 (Direct Cost: ¥8,000,000)
KeywordsPermafrost / Periglacial Phenomena / Sea level change / Post glacial period / Active layer / Climatic Change / Antarctic IceーSheet / Antarctic Peninsula
Research Abstract

James Ross Island and Seymour Island locate in the middle of Weddel Sea near Larsen Ice Shelf. Due to the long periods of sea ice coverage, the mean annual temperature at both Islands is lower than western side of the Antarctic Peninsula and it stands -10^゚C.
Ice free ground areas in both islands are exposed to the severe climatic conditions and permafrost develop in certain depths. To estimate the permafrost distribution, geo-eletric resistivity surveys were conducted at various locations.
The vertical profiles of geo-electric resistivity of the ground indicate the existance of the discontinuity of resistivity. The depth of this discontinuity relates to the permafrost table. The horizontal profiles of geo-electric resistivity at the sorted circles show the internal structure of the frozen ground.
At James Ross Island, marine terraces develop at three different altitudes ; upper terrace (+30-40 m a. s. l.), middle terrace (+15-20 m a. s. l.) and lower terrace (+5 m a. s. l.). The ages of middle and lower terraces were estimated by the results of ^<14>C dating measurements using shell samples as 25,000y. B. P. and 3,000y. B. P., respectively. The depth of the permafrost table at lower terrace is estimated as 6 m. It implies that the permafrost with 6 m depth formed for these 3000 years under the present climatic condition.
Besides of permafrost occurrence at the surveyed areas, active periglacial phenomena were observed such as sorted stripes, sorted circles and stone pits. Transitional distributions of sorted circles and stone pits were mapped in detail on the slope. To monitor the active ice-wedge cracking under present climatic condition, the distance between the ice-wedge ice were measured with non-active cracking for two years periods.

Report

(1 results)
  • 1990 Final Research Report Summary
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 福田 正己: "南極半島永久凍土調査ージェ-ムス・ロス島調査概要" 極地. 26. 53-58 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Kato,A.M.Corte,M.Fukuda: "Chemical and isotopic characteristics of ice from an iceーwedge in Seymour Island (Isla Vcom.Marambio),Antarctic Peninsula Region (1)" Proceedings of the NIPR Symposium on Antarctic Geoscience. 4. 181-190 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 福田 正己、ホルヘステレリン、下川 和夫、高橋 伸幸、曽根 敏雄: "南極半島、James Ross島の露岩地域の永久凍土の形成について" 第11回南極地学シンポジウム、プログラム・講演要旨. 27-29 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 福田 正己、下川 和夫、高橋 伸幸、曽根 敏雄: "南極半島凍土現象" 日本地理学会予稿集. 38. 6-7 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M.Fukuda,K.Shimokawa,N.Takahashi,T.Sone: "Penglacial features in James Ross Island,Antarctic Peninsula" Artic and Alpine Research.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Fukuda: "Field Investigations of Permafrost in James Ross Island, Antarctic Peninsula Area" Polar News. 26. 53-58 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Kato, A. M. Corte and M. Fukuda: "Chemical and isotopic characteristics of ice from an ice-wedge in Seymour Island (Isla Vcom. Marambio), Antarctic Peninsula Resion (1)" Proceedings of the NIPR Symposium on Antarctic Geoscience. 4. 181-190 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Fukuda, J. Strelin, K. Simokawa and T. Sone: "Permafrost Occurrence at Ice Free Ground in James Ross Island, Antarctic Peninsula Area" Program and Abstracts of the 11th Symposium on Antarctic Geoscience. 27-29 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Fukuda, L. Shimokawa, N. Takahashi and T. Sone: "Ground freezing phenomena in Antarctic Peninsula Regions" Program and Abstracts of the conference of the Association of Japanese Geographers. 38. 6-7 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Fukuda, K. Shimokawa, N. Takahashi and T. Sone: "Periglacial features in James Ross Island, Antarctic Peninsula" Arctic and Alpine Research.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary

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Published: 1989-04-01   Modified: 2016-04-21  

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