スピッツベルゲン, ニューオールスンにおける地温の観測 Ground Temperature Measurement in Ny Alesund, Spitsbergen

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Ground temperature was continuously measured during 1994-1996 on a debris-mantled slope near Ny Ålesund, Spitsbergen. Measurements were taken at one-hour intervals using a digital data logger connected to four platinum thermistor sensors, which were inserted at 0, 10, 40, 80 cm in depth.<BR>Diurnal freeze-thaw cycles occurred only five times during the 1994 freezing period and 14 times during the 1995 freezing period. The average frost depth during these diurnal cycles was 4.7 cm. Small daily temperature ranges at the ground surface indicate that the slope was covered with snow from middle September to June or July. The late-lying snow cover was responsible for the absence of diurnal freeze-thaw cycles during the thawing period. Seasonal freezing began in middle to late September, and the freezing front penetrated to a depth of 80cm during these weeks. The seasonal frost began to melt in mid-June, and the thawing front reached a depth of 80 cm in two weeks. The thickness of the active layer was estimated to be about 110 cm on the basis of the distribution of the mean ground temperature profile in July. Seasonal freeze-thaw cycles are considered to be much more selective in producing periglacial landforms in this region than diurnal cycles.

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  • 地學雜誌

    地學雜誌 107(5), 728-734, 1998-10-25

    Tokyo Geographical Society

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各種コード

  • NII論文ID(NAID)
    10003775236
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    0022135X
  • NDL 記事登録ID
    4595087
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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