地表面熱収支に及ぼす地中伝熱量の評価と影響
書誌事項
- タイトル別名
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- The Evaluation and Effects of Soil Heat Flux on Ground Surface Heat Balance.
抄録
Few studies have specifically shown the effects of soil heat flux on ground surface heat balance. In this study, four practical calculation methods for soil temperature and soil heat flux were examined by using data collected at the Cold Region Meteorological Observatory of the Kitami Institute of Technology. The results indicated that the calculated soil temperature values were influenced by initial conditions more than by boundary conditions at the ground surface in cases in which observed values were used for determining the boundary and initial conditions, and a cubic equation for subsurface field was found to be better than a constant for describing initial conditions. On the other hand, the calculated values for soil heat flux were more influenced by the surface boundary conditions than by the initial conditions, and a linear equation was found to be better than a constant for describing surface boundary conditions during constant intervals. Next, a conduction-convection ratio was proposed as an index to show the influence of the soil heat flux. It became clear that the influence of the hourly averaged soil heat flux in the observatory was sometimes negligible around sunrise and sunset. Finally, referring to published references, the distribution ratios of sensible, latent and soil heat flux corresponding to different types of land cover were plotted on triangular coordinates. It was found that the influence of the soil heat flux was not always negligible when the calculation interval was one day or longer.
収録刊行物
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- 水文・水資源学会誌
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水文・水資源学会誌 12 (6), 492-501, 1999
水文・水資源学会
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詳細情報 詳細情報について
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- CRID
- 1390001204439614848
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- NII論文ID
- 130003447426
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- ISSN
- 13492853
- 09151389
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可