降雨の土壤侵蝕力に關する研究

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書誌事項

タイトル別名
  • Studies on the soil-erosive force of precipitation
  • コウウ ノ ドジョウ シンショクリョク ニ カンスル ケンキュウ ダイ3ポウ
  • 3. On the kinetic energy of rainfall
  • (III) 雨の運動エネルギーに就て

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説明

In generally, rainfall intensity was denoted by only masses. In present paper, we coscidered the relation between kinetic energies and rainfall intensities.<br>1. For instance, the kinetic energy of a raindrop which is maximum among all we observed is 4.6×104 ergs, and on moderate storms, summation of energies amounts to about 106erg/cm2.<br>2. The kinetic energy of rainfall increases according to a power function of the intensity, i. e. we obtain<br>E=75.9I1.20<br>where<br>E: energy of rainfall erg/cm2 min.<br>I: intensity of rainfall. mg/cm2 min.<br>As a factor of soil erosion, it is more rational to consider the kinetic energy of rainfall instead of amount only.

収録刊行物

  • 農業気象

    農業気象 5 (3), 126-128, 1950

    日本農業気象学会

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