2022 Fiscal Year Final Research Report
Estimating of unstationary IDFA curve by using d4PDF dataset
| Project/Area Number |
19K04613
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 22040:Hydroengineering-related
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| Research Institution | Mie University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| Keywords | IDFAカーブ / 頻度解析 / 水文統計学 / 母数推定法 / 適合度評価手法 / d4PDF / 中小河川計画の手引き（案） |
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| Outline of Final Research Achievements |
We investigated a method how to derive IDFA curve whichi is important when we plan folood-control system. I is intensity, D is duration, F is frequency and A is area. Moreover we investigated parameter-estimation of stochastic model for deriving IDFA curve and goodness-of-fit (validation) method ofstochastic model in detail. As a result, we proposed new method for parameter-estimation and goodness-of-fit of stochastic model.
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| Free Research Field |
土木工学・水工水理学
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| Academic Significance and Societal Importance of the Research Achievements |
もともと非定常降水量時系列データを使ったIDFAカーブの算定法が主なテーマだったが，解析手法として用いる「確率モデルの母数推定法」「確率モデルの適合度評価」のあたりの検討結果で特筆すべきものが得られた．国交省が用いている現在のこれらに関する手法には，色々と不都合な点があることを見出し，その改良手法について種々提案した．これは非常に意義あることと考えている．学会賞もいただいた．
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