書誌事項
- タイトル別名
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- ASSESSMENT OF UNCERTAINTY IN RAINFALL-RUNOFF ANALYSIS INCORPORATING STOCHASTIC DIFFERENTIAL EQUATION
- カクリツ ビブン ホウテイシキ ノ ドウニュウ ニ ヨル コウウ リュウシュツ カテイ ニ オケル コウウ ノ フカクジツセイ ノ ヒョウカ
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抄録
This paper explained the uncertainty of discharge due to the uncertainty of rainfall theoretically and mathematically. The lumped rainfall-runoff model is represented by SDE (stochastic differential equation), because the temporal variation of rainfall is expressed by its average plus deviation, which is approximated by Gaussian distribution. As a result, this paper has shown that it is possible to evaluate the uncertainty of discharge by using the relationship between SDE and Fokker-Planck equation. Moreover, the results of this study show that the uncertainty of discharge increases as rainfall intensity rises and non-linearity about resistance grows strong. These results are clarified by PDFs (probability density function) that satisfy Fokker-Planck equation about discharge. It means the reasonable discharge can be estimated based on the theory of stochastic processes, and it can be applied to the probabilistic risk of flood management.
収録刊行物
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- 土木学会論文集B1(水工学)
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土木学会論文集B1(水工学) 71 (4), I_259-I_264, 2015
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390282680330820736
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- NII論文ID
- 130005123579
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- NII書誌ID
- AN10426673
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- ISSN
- 18808751
- 2185467X
- 09167374
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- NDL書誌ID
- 026330682
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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
- NDL
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- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可