雪氷
Online ISSN : 1883-6267
Print ISSN : 0373-1006
20 巻, 2 号
選択された号の論文の3件中1~3を表示しています
  • 塩谷 正雄
    1958 年 20 巻 2 号 p. 33-36
    発行日: 1958年
    公開日: 2009/09/04
    ジャーナル フリー
    A total amount of the snow drift during a winter is one of the important elements for the design of the facilities which protect railroads and highways from the snowstrom. It was obtained experimentally from the accumulation of snow around the snow-storm prevention forest and from the vertical distribution of drifting snow during the snow-storm, both of which were measured in author's Institute during past few years. On the other hand, the quantity of drifting snow was calculated according to the various formula, being expressed as the function of wind velocity over the snow cover. Comparison of measured values with calculated ones showed that the formula q=cv3 (, where c takes numerical value 0.0139, measuring q and v with g/cm. min. and m/sec. units respectively, ) which was suggested in Soviet Union is satisfactory for estimating the total amount of snow drift from the records of the wind velocity.
  • 吉田 元, 滝川 泱男, 上田 政文
    1958 年 20 巻 2 号 p. 37-44
    発行日: 1958年
    公開日: 2009/09/04
    ジャーナル フリー
    This experimental research has been performed at DOAI Snow-camp in March 1955-1957. A method is described for construction of snow-camp “igloo”, determination of atmospheric temperature and humidity and the effect of living in snow-camp on body health.
    The experimental results are as follows : The height of igloo was decreased rapidly for 3 days after perfection and inner diameter was also decreased day after day. The deformation of the construction was concerned with the nature of snow and the depth of wall, temperature and humidity of inner and outer atmosphere. Generally, inner temperature was higher than that of outdoors, and also inner humidity 90% or more from the experiment of electric hygrometer. Atmospheric condition in igloo which was determined by the use of Kata thermometer was nearly equal to that of living house in the same province. The volume of CO2 gas at the living time was almost negligible, and pH value of saliva of the member of living in igloo was showed nearly normal value.
    It can be concluded that igloo is a fairly efficient and comfortable device of refuge in snow-camps.
  • 鎌田 正之
    1958 年 20 巻 2 号 p. 54-57
    発行日: 1958年
    公開日: 2009/09/04
    ジャーナル フリー
    目次
    1なだれ件数と防護施設
    2なだれ防止林の予備施設
    3なだれ防止林の造林
    4なだれ防止林の立木度
    5なだれ防止林の更薪
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