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Permafrost and Ground Ice Occurrences at Oketo, Hokkaido.

Research Project

Project/Area Number 01460265
Research Category

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

Allocation TypeSingle-year Grants
Research Field 自然地理学
Research InstitutionHokkaido University

Principal Investigator

FUKUDA Masami  Institute of Low temp. Sci., Prof., 低温科学研究所, 教授 (70002160)

Co-Investigator(Kenkyū-buntansha) TAKAHASHI Shuhei  Kitami Institute of Technology, Prof., 工学部, 教授 (50125390)
SONE Toshio  Institute of low Temp. Sci., Post Doctor Fellow of JSPS, 低温科学研究所, 日本学術振興会特別研 (10222077)
ISHIZAKI Takeshi  Intstitute of low Temp. Sci., Research Associate, 低温科学研究所, 助手 (80212877)
成田 英器  北海道大学, 低温科学研究所, 講師 (20001662)
高橋 伸幸  北海道大学, 大学院環境科研究科, 特別研究員 (20202153)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1989: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsPermafrot / Periglacial Phenomena / Ground ice / Post glaciation / Cold climate / Palsa / Ice age / 風穴 / 気候変動 / ツンドラ / タイガ / 構造土
Research Abstract

Geo-electric-resistivity survey was conducted at the site of permafrost existence on the slope near Lake Kanoko, Oketo, Hokkaido. At that site, ground ice among the sediments was exposed by the previous excavation. The resistivity survey aimed to extend the distribution area by detecting the discontinuity of ground resistivity values. As the results, the high resistivity area in the sediments coincided with the per-existed ground ice body. The long term meaurements in the bore hole which was made at that time of excavation of ground ice indicate the permafrost existence in the layers between 1meter and 5 meter deep. By recent trend of warm climate, this permafrost layers tend to thin.
To compare permafrost existence at low altitude area such as Oketo with typical alpine permafrost at Mt. Daisetsu, intensive field surveys were conducted during research periods. The geo-electric-resistivity surveys were also made at the site where typical alpine permafrost existed. Correlation between permafrost thickness and geo-electric-resistivity profiles was made based on the results. The haved topography related to alpine permafrost occurrence named as palsa was observed at that site. The internal structure of palsa was obtained by means of bore hole test and vertical profiling of geo-resistivity survey.
Bore hole sampling was made at the site of palsa and obtained samples were subjected to pollen analysis and carbon dating analysis. The results indicated that the sedimentation initiated to last glacial ages and warm interglacial period interval was observed among the layers.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 原田 鉱一郎・福田 正己・石崎 武志: "電気抵抗探査による置戸町の永久凍土と地下氷の調査結果" 北海道の雪氷. 9. 43-45 (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・曽根 敏雄: "大雪山の永久凍土形成に及ぼす表面植生の影響" 雪氷. 予定. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 原田 鉱一郎・福田 正己・石崎 武志: "凍土の電気抵抗特性について" 低温科学. 予定. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Harada, M. Fukuda and T. Ishizaki.: "The results of Geoーelectric-resistivity survey at the site of permafrost, Oketo, Hokkaido." Japanese Journal of Snow and Ice Research,. 9,. 43-45, (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 and T. Sone.: "The effects of vegetation covers to the permafrost distribution at Mt. Daisetsu." Seppyo,. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Harada, M. Fukuda and T. Ishizaki.: "DC conductivity of frozen soils." Low Temperature Science,. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 原田 鉱一郎・福田 正己・石崎 武志: "電気比抵抗探査による置戸町の永久凍土と地下氷の調査結果" 北海道の雪氷. 9. 43-45 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 福田 正己・曽根 敏雄: "大雪山の氷久凍土形成に及ぼす表面植生の影響" 雪氷. 予定. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 原田 鉱一郎・福田 正己・石崎 武志: "凍土の電気比抵抗特性について" 低温科学. 予定. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 高橋伸幸、福田正己: "大雪山に分布するパルサの内部構造" 北海道の雪氷. 8. 55-58 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 福田正己ほか: "土の100不思議" 日本林業技術協会, 217 (1990)

    • Related Report
      1989 Annual Research Report

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

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