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Characteristics and Mechanism of Glacier Variations in Patagonia, Andes, Revealed by Satellite-data Analyzes.

Research Project

Project/Area Number 04452068
Research Category

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

Allocation TypeSingle-year Grants
Research Field 気象・海洋・陸水学
Research InstitutionHokkaido University

Principal Investigator

NARUSE Renji  Hokkaido University, Institute of Low Temperature Science, Associate Professor, 低温化学研究所, 助教授 (10002099)

Co-Investigator(Kenkyū-buntansha) ANIYA Masamu  University of Tsukuba, Institute of Geoscience, Associate Professor, 地球科学系, 助教授 (10111361)
白岩 孝行  北海道大学, 低温科学研究所, 助手 (90235739)
Project Period (FY) 1992 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 1994: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1993: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1992: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsSatellite Data / Patagonia / Patagonia Icefield / Climatic Change / Glacier Variation / Mass Balance / Geographical Information System / Glacier Inventory / パタゴニア氷原 / 氷山分離 / 氷河前進 / 氷河後退 / 北パタゴニア氷原 / 氷河地形
Research Abstract

We collected a number of remote sensing data which cover the Southern Patagonia Icefield (SPI : 350 km long and 50 km wide) in the southern Andes. The data include Landsat MSS (1976), TM (1986), Spot (1987,1991), and aerial photographs taken in 1945, the late 1960s and 1970s. Analyzing the data, variations since 1945 of eight major outlet glaciers in the SPI were elucidated. During the last 41 years, most glaciers showed a general recession, namely 2.2km at Jorge Montt, 13.4 km at O'Higgins and 2.6 km at Upsala glaciers. On the other hand, Bruggen Glacier advanced 5.3 or 8.4 km in the same period. Thus, it was found that, in Patagonia, some glaciers have behaved in different manners and with different magnitudes of variations.
Also as a study of Geographical Information System, various features of glaciers were digitized, and inventories of 48 glaciers in the SPI were completed.
With a mass-balance model which includes the calving rate, simulations of glacier variations were made for Upsala and Moreno glaciers. The result shows that a 100 m rise in the equilibrium-line altitude due to climatic change would result in a 200-350 m rise in the frontal altitude at Upsala Glacier corresponding to a retreat of 5-8 km, while it would cause only a 70-100 m rise at Moreno Glacier. Also numerical experiments using a degree-day method were made for Soler Glacier. As a result, a 20% decrease in snow-fall would result in only a 50m rise in the frontal altitude, while a 1^OC increase would result in a 100 m rise in the equilibrium-line altitude. Further experiments with a dynamical model are planned to carry out.

Report

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

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Masamu Aniya: "Monitoring recent glacier variations in the Southern Patagonia Icefield,utilizing remote sensing data." International Archives of Photogrammetry and Remote Sensing.XXIX. 87-94 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 安仁屋,政武: "リモート・センシング・データ解析による南米・南パタゴニア氷原の最近の氷河変動" 東大生産技研フォーラム第2回論文集. 188-197 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Renji Naruse: "Recent variations of calving glaciers in Patagonia,South America revealed by ground surveys, satellite-data analyses and numerical experiments." Annals of Glacilogy. 21(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Masamu Aniya: "Monitoring recent glacier variations in the Southern Patagonia Icefield, utilizing remote sensing data" International Archives of Photogramtry and Remote Sensing. XXIX. 87-94 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Masamu Aniya: "Recent glacier variations in the Southern Patagonia Icefield, as revealed by remote sensing data" proceedings of the second Seiken Forum, Tokyo Univ.188-197 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Renji Naruse: "Recent variations of calving glaciers in Patagonia, South America, revealed by ground surveys, satellite-data analyzes and numerical experiments" Annals of Glaciology. (in press). 21 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Renji NARUSE: "Recent variations of calving glaciers in Patagonia,South America,revealed by ground surveys,satellite-data analyses and numerical experiments." Annals of Glaciology. 21(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Masamu Aniya: "Monitering recent glacier variations in the Southern Patagonia Icefield,utilizing remote sensing data." International Archives of Photogrammetry and Remote Sensing.XXIX. 87-94 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] 安仁屋 政武: "リモート・センシング・データ解析による南米・南パタゴニア氷原の最近の氷河変動" 東大生産技研フォーラム論文集. 188-197 (1994)

    • Related Report
      1993 Annual Research Report

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

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