低密度の雪の圧縮粘性係数と密度の関係

• 遠藤 八十一

  森林総合研究所十日町試験地

• 大関 義男

  森林総合研究所十日町試験地

• 庭野 昭二

  森林総合研究所十日町試験地

書誌事項

タイトル別名

• Relation between compressive viscosity and density of low-density snow.
• テイ ミツド ノ ユキ ノ アッシュク ネンセイ ケイスウ ト ミツド ノ カ

抄録

Compressive viscosity of snow with densities less than 180kg/m³ was measured at Tohkamachi, 1988. The relation between compressive viscosity η/ and snow density ρ was found to be expressed by<BR>η= Cρⁿ.<BR>Although the value of C scattered considerably from 0.193 to 0.794 N.s.m^-2 (m³/kg) m, the power n showed almost the constant value 4.00. Relations between η and ρ obtained by several previous researchers were also expressed by the form of power equation for snow with densities less than 300kg/m³. Based on the above equation, the variation of snow density with time was derived as follows : <BR>ρ (t, t_i) = {(n/C) Q (t, t_i) + ρ₀ⁿ} ^1/n, <BR>where ρ (t, t_i) is the density at time t of ti-layer (deposited at time t_i), ρ₀ the initial density of t_i-layer, Q (t, t_i) the integrated normal stress which acted perpendicularly to ti-layer from t_i to t. The equation was used for computing theoretically the depth of snow cover and the depth-density profile from the observed daily amount of precipitated snow. The calculated results were found to be in good agreements with the data observed at Tohkamachi.

収録刊行物

• 雪氷

  雪氷 52 (4), 267-274, 1990

  公益社団法人 日本雪氷学会

詳細情報

• CRID: 1390001206461375744
• NII論文ID: 130000906138
• NII論文ID: 10003620274
• NII書誌ID: AN00131221
• DOI: 10.5331/seppyo.52.267
• ISSN: 18836267
• ISSN: 03731006
• NDL書誌ID: 3701396
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3701396
• 本文言語コード: ja
• データソース種別:
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  • NDL
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  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可