富士山の夏の表層地温

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タイトル別名
  • Soil Temperatures on Mt. Fuji during the Summer of 1974
  • フジサン ノ ナツ ノ ヒョウソウ チオン

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Observations of the soil temperatures on Mt. Fuji were conducted during the summer of 1974. The temperatures were measured on each direction of the slopes, north, west, south and east, at the depths of 0.2, 0.4 and 0.8 meter from the surface to the altitude of 2480 meters which was above the upper limit of the forest. The materials of the shallow layer were thick soils on the northern, western and southern slopes, but volcanic sand on the eastern.<br>The soil temperatures became cooler with altitude, but the lowest temperatures were in the conifer forest zone at the height of about 2070 meters. The ratio of volcanic sand became larger above this height.<br>The lapse rate of the soil temperature is in the range of 0.33 to 0.61°C per 100 meters. The lapse rates are largest in the northern slope and smallest in the southern and eastern slopes. Depending on the depth, the difference in the rate was larger in the northern slope, but it was smaller in the southern slope.<br>The soil temperatures differ according to the direction of the slope. On the eastern slope, the soil temperatures are the highest, while it is the lowest on the northern slope. This phenomenon is related to the reciprocals of the remainders of the temperatres with the depth of soil.

収録刊行物

  • 東北地理

    東北地理 28 (2), 77-82, 1976

    東北地理学会

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